Document:

<PAGE>   1
                                                                   EXHIBIT 10.85

                                GRADALL EQUIPMENT
                              DISTRIBUTOR AGREEMENT

AGREEMENT between THE GRADALL COMPANY of New Philadelphia, Ohio (hereinafter
called "The Company") and:
Western Traction Company
1333 Atlantic Street
Union City, California 94587

(hereinafter called 'The Distributor") covering the sale of Gradall EXCAVATOR
equipment. including superstructure. wheel undercarriage, crawler, attachments
and parts set forth in Annex "A" and/or Annex "A-1" attached hereto (hereinafter
sometimes referred to as "products"):

Territory: The Distributor's territory shall consist of the following area:

In the State of California, all counties North of, but excluding San Luis
Obispo, Kern, Inyo and the Eastern slope of the Sierra Nevada Mountains in Mono
County.

A. Transactions Covered: The Distributor shall have the privilege of purchasing
such products and reselling the same as an authorized Distributor for the
Company. No sales of used, repaired, rebuilt or second-hand products are covered
by this Agreement, nor other new products unless specifically listed in Annex
"A" and/or Annex "A-1.

B. Sales Activities: The Distributor shall use his best efforts in promoting.
maintaining and increasing the sale and use of said products in the territory.
He agrees to carry in stock within his territory certain of the products covered
hereby of a type and quantity to be mutually agreed on. He shall maintain within
his territory an organization and facilities adequate and appropriate for his
territory. for the solicitation of business. and the storage. installation. and
servicing of said products.

The Company shall provide the Distributor with such quantities of its sales
literature, including price lists, catalogs, photographs and circulars, at are
regularly furnished to its Distributors; and the Distributor shall be
responsible for regular distribution of such sales literature. Additional
quantities of the literature shall be requested regularly to insure an adequate
supply on hand at all times.

C. Prices: The Company will furnish the Distributor with the Company's suggested
prices for the products These prices are subject to change upon notice to the
Distributor.

D. Discount: On all products purchased by the Distributor under this Agreement,
the price to him shall be the Company's price less the applicable base discount
stated in Annex "A" and/or Annex "A-1," which shall be applicable subject to
modification from time to time at the Company's discretion. That discount shall
be allowed in full on all orders received from the Distributor and accepted by
the Company where the underlying orders to the Distributor arise from sources
within his designated territory and which require and are completed by shipment
to and original use in his designated territory; in other cases the discount
shall be adjusted as provided in paragraph E.

E. Adjustments of Discounts: (a) Where the Company accepts an order from a
Federal Government, or any agencies thereof, no compensation shall be due the
Distributor unless the Distributor has been requested by the Company to
participate in the transaction in which event the compensation will be adjusted
in accordance with paragraph (b) below.

(b) Where the Company accepts an order from any source outside the Distributor's
designated territory requiring shipment to and original use and delivery in the
Distributor's territory, or where a customer located within the Distributor's
territory prefers to deal with, and place orders directly with the Company
requiring shipment to and

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<PAGE>   2

original use and delivery in the Distributor's territory, or where orders
originate in the Distributor's territory but the completion thereof requires
shipment, original use and delivery outside the designated territory,
compensation to the Distributor shall be adjusted on the basis of the extent of
the Distributor's participation in the transaction, if any. Generally,
three-quarters of the base discount will be considered to be fair for securing
and financing an order, and one-quarter for pre-delivery, delivery, and
servicing of equipment after shipment. The decision of the Company in all cases
shall be final and binding upon the Distributor.

F. Terms of Sales: All orders are subject to approval or modification by the
Company's main office. The terms of sale shall be Net 30 days, f.o.b. factory. A
special cash discount of 2% of the net f.o.b. factory price will be allowed on
the purchase of any machine superstructure, undercarriage or boom attachment,
provided the Distributor's account is not past due, and provided that full
payment is made within 15 days from date of shipment from the factory. No cash
discount will be allowed on payment for parts. All payments shall be made in
United States funds free of exchange and collection charges. Overdue accounts
are subject to a charge of 1-1/2% per month or the maximum legal contractual
rate between corporations, whichever is the lesser. If, in the sole discretion
of the Company, terms of payment other than those stipulated above appear
advisable, the Distributor shall agree to an equitable revision of such terms.
"Volume Discounts", Cancellation Charges, "Floor Plan" and "Rental Terms" are
set forth in Annex "B."

G. Forcemajeure: The fulfillment of accepted orders is contingent on accidents,
fires, strikes, or other causes beyond the Company's control.

H. Termination: (1) The parties to the Agreement may by mutual consent terminate
the Agreement any time.

(2) Either party to the Agreement may terminate the Agreement immediately by
telegraphic or written notice to the other party for any one of the following
causes: (a) insolvency. (b) bankruptcy, (c) assignment of property for the
benefit of creditors, (d) re-organization and/or changes in ownership,(e)
default in payment of monies due the terminating party and (f) breach of
covenants or failure to perform under provisions of this Agreement.

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<PAGE>   3
                                GRADALL EQUIPMENT
                              DISTRIBUTOR AGREEMENT

AGREEMENT between THE GRADALL COMPANY of New Philadelphia, Ohio (hereinafter
called "The Company") and:

Western Traction Company
1333 Atlantic Street
Union City, California 94587

(hereinafter called "The Distributor") covering the sale of Gradall EXCAVATOR
equipment, including superstructure, wheel undercarriage, crawler, attachments
and parts set forth in Annex "A" and/or Annex "A-1" attached hereto (hereinafter
sometimes referred to as "products"):

Territory: The Distributor's territory shall consist of the following area:

In the State of Nevada, all counties West of and including Humboldt, Lander and
Nye.

A. Transactions Covered: The Distributor shall have the privilege of purchasing
such products and reselling the same as an authorized Distributor for the
Company. No sales of used, repaired, rebuilt or second-hand products are covered
by this Agreement, nor other new products unless specifically fisted in Annex
"A" and/or Annex "A-1."

B. Sales Activities: The Distributor shall use his best efforts in promoting,
maintaining and increasing the sale and use of said products in the territory.
He agrees to carry in stock within his territory certain of the products covered
hereby of a type and quantity to be mutually agreed on. He shall maintain within
his territory an organization and facilities. adequate and appropriate for his
territory, for the solicitation of business, and the storage, installation, and
servicing of said products.

The Company shall provide the Distributor with such quantities of its sales
literature, including price lists, catalogs, photographs and circulars, as are
regularly furnished to its Distributors; and the Distributor shall be
responsible for regular distribution of such sales literature. Additional
quantities of the literature shall be requested regularly to insure an adequate
supply on hand at all times.

C. Prices: The Company will furnish the Distributor with the Company's suggested
prices for the products. These prices are subject to change upon notice to the
Distributor.

D. Discount: On all products purchased by the Distributor under this Agreement,
the price to him shall be the Company's price less the applicable base discount
stated in Annex "A" and/or Annex "A-1," which shall be applicable subject to
modification from time to time at the Company's discretion. That discount shall
be allowed in full on all orders received from the Distributor and accepted by
the Company where the underlying orders to the Distributor arise from sources
within his designated territory and which require and are completed by shipment
to and original use in his designated territory; in other cases the discount
shall be adjusted as provided in paragraph E.

E. Adjustments of Discounts: (a) Where the Company accepts an order from a
Federal Government, or any agencies thereof, no compensation shall be due the
Distributor unless the Distributor has been requested by the Company to
participate in the transaction, in which event the compensation will be adjusted
in accordance with paragraph (b) below

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(b) Where the Company accepts an order from any source outside the Distributor's
designated territory requiring shipment to and original use and delivery in the
Distributor's territory, or where a customer located within the Distributor's
territory prefers to deal with, and places orders directly with the Company
requiring shipment to and original use and delivery in the Distributor's
territory, or where orders originate in the Distributor's territory but the
completion thereof requires shipment, original use and delivery outside the
designated territory, compensation to the Distributor shall be adjusted on the
basis of the extent of the Distributor's participation in the transaction, if
any. Generally, three-quarters of the base discount will be considered to be
fair for securing and financing an order, and one-quarter for pre-delivery,
delivery, and servicing of equipment after shipment. The decision of the Company
in all cases shall be final and binding upon the Distributor.

F. Terms of Sales: All orders are subject to approval or modification by the
Company's main office. The terms of sale shall be Net 30 days, f.o.b. factory. A
special cash discount of 2% of the net f.o.b. factory price will be allowed on
the purchase of any machine superstructure, undercarriage or boom attachment,
provided the Distributor's account is not past due, and provided that full
payment is made within 15 days from date of shipment from the factory. No cash
discount will be allowed on payment for parts. All payments shall be made in
United States funds free of exchange and collection charges. Overdue accounts
are subject to a charge of 1-1/2% per month or the maximum legal contractual
rate between corporations, whichever is the lesser. If, in the sole discretion
of the Company, terms of payment other than those stipulated above appear
advisable, the Distributor shall agree to an equitable revision of such terms.
"Volume Discounts", "Cancellation Charges", "Floor Plan" and "Rental Terms" are
set forth in Annex "B."

G. Forcemajeure: The fulfilment of accepted orders is contingent on accidents,
fires, strikes, or other causes beyond the Company's control.

H. Termination: (1) The parties to the Agreement may by mutual consent terminate
the Agreement any time.

(2) Either party to the Agreement may terminate the Agreement immediately by
telegraphic or written notice to the other party for any one of the following
causes: (a) insolvency, (b) bankruptcy, (c) assignment of property for the
benefit of creditors, (d) re-organization and/or changes in ownership, (e)
default in payment of monies due the terminating party and (f) breach of
covenants or failure to perform under provisions of this Agreement.

(3) If either party is dissatisfied with the other party's performance under the
Agreement and wishes to terminate the Agreement (for reasons other than the
causes in paragraph 2 above) the complaining party may initiate a termination
procedure in the following manner: (a) The party wishing to terminate the
Agreement shall mail a notice to the other party stating his reasons for
dissatisfaction with the other party's performance under the contract. (b) The
party initiating the termination procedure shall give the other party a thirty
day period after the above notice to personally discuss the areas of differences
with a top official of the party initiating the termination procedure. (c) The
initiating party shall give the other party an additional 30 days to correct, to
the satisfaction of the initiating party, any alleged deficiencies in the other
party's performance under the Agreement, (d) If the initiating party decides 60
days following the issuance of his original notice that the other party's
performance under the Agreement is still not satisfactory, the initiating party
may notify the other party by registered mail of the termination Agreement 30
days from the date of the mailing of this notice.

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(4) Every liability and obligation of either party to the other accrued at the
time of expiration or termination of this Agreement shall continue and be
payable not withstanding such expiration or termination. Upon breach of, or
termination of this Agreement by the Distributor the Company may at its option
cancel any or all unfilled orders. Upon breach of or termination of this
Agreement by the Company, all unfilled orders shall be automatically canceled
without notice except those covering products already contracted to be sold by
the Distributor.

I. Return of Products: (a) With the written consent of the Company. except as
provided below, the Distributor may return unused new products for credit
provided that such products ware originally purchased from the Company and have
appeared on all inventory lists supplied the Company. Credit will be allowed to
the Distributor at the net price originally received by the Company, less any
transportation expense paid by the Company, handling, inspection, painting and
other restocking charges necessary to recondition product to make it saleable as
new material, See Annex "C" for Annual Return and errors in shipment.
(b) The Company, at any time by written notice to the Distributor, may designate
products as non-returnable. Within a period of 30 days after the giving of such
notice, the Distributor may without further consent of the Company return
products to designated upon the terms stated in (a) above. If the Distributor
fails to do so within this period, the Company need not consent to the return of
any such product, (c) Upon termination by the Distributor of this Agreement, the
Company may, at its option, require the return of any or all of the
Distributor's stock for credit in accordance with (a) and (b) above. (d) Upon
termination of this Agreement by the Company, with the exception of such
products as may have been previously contracted to be told by the Distributor
and excepting such products as may have become non-returnable for credit in
accordance with (b) above, the Distributor may return promptly to the Company,
in accordance with its shipping instructions, all unused new products which were
originally purchased from the Company and which have appeared in all inventory
lists supplied to the Company. Credit will be allowed to the Distributor in
accordance with (a) above except that the Company will bear the transportation
costs from the Distributor.

J. Warranty: The Company's warranty is set forth in the Warranty Policy and
Instruction Manual attached as Annex "D",

THAT WARRANTY IS EXCLUSIVE AND IN LIEU OF ALL OTHER WARRANTIES WHETHER WRITTEN,
ORAL OR IMPLIED (INCLUDING ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR A
PARTICULAR PURPOSE).

K. Reports: The Distributor shall forward for the Company's confidential use
such balance sheets, earnings statements or other financial information
pertaining to his business at such time or times as may reasonably be requested
by the Company. The Distributor shall keep the Company continually informed as
to the description, serial number, machine application and place of delivery of
all products sold, together with the names and addresses of purchasers. The
Distributor will furnish the Company on the 25th of each month, detailed reports
as to the Distributor's inventory.

L. Discontinuance Of And Changes in Products: The Company shall have the right
at any time to discontinue the manufacture or sale of any of its products, to
make changes in design and to add, modify or delete features of its products,
without incurring any obligation to install or provide the same on any products
previously manufactured or told by the Company.

M. Amendments: Annexes are subject to change upon notice to the Distributor by
the Company; otherwise

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<PAGE>   6

no change or modification of the Agreement shall be effective unless it is
reduced to writing and signed by both parties.

N. Applicable Laws: This Agreement is to be construed under and in accordance
with the laws of Ohio, It is subject to such modifications as may be reasonably
necessary as a result of changes in state or federal laws or regulations, If any
provision of this Agreement is prohibited by law or regulation of federal or
state government or any political subdivision thereof, it shall be ineffective
to the extent of such prohibition without invalidating the remaining provisions
of this Agreement,

0. General: The full cost, responsibility, and duty for or in connection with
acquiring or renting, and for or in connection with operating and maintaining
the Distributor's place of business and all other property and facilities used
by the Distributor, shall rest upon the Distributor. Nothing herein or otherwise
is intended or shall be construed to constitute the Distributor an agent,
servant, or employee of the Company, and the Distributor has and shall have no
power or authority whatever to make any agreement, incur any liability,
obligation, or indebtedness whatever, for or on behalf of or in any way binding
upon the Company. The Distributor will not use directly or indirectly, in whole
or in part the trademarks or name of the Company as a part of the corporate or
business name of the Distributor. The Distributor shall not assign nor transfer
this Agreement, either in whole or in part, to any other party without written
content of the Company.

SIGNED ON 4-30-84 but effective as of October 28, 1983.

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<PAGE>   7
ANNEX - TABLE OF CONTENTS

<TABLE>
<CAPTION>
                                                                            Page
<S>                                                                        <C>
BASE DISCOUNT RATES (Annex A) ..........................................   Page 4

BASE DISCOUNT RATES (Annex A-1) ........................................   Page 4-A

SPECIAL "VOLUME DISCOUNT" (Annex B1) ...................................   Page 5

CANCELLATION CHARGE SCHEDULE (Annex B2) ................................   Page 6

"FLOOR PLAN" TERMS (Annex B3) ..........................................   Page 7

RENTAL PLAN (Annex B4) .................................................   Page 8

CONVERSION from "FLOOR PLAN" to RENTAL PLAN (Annex B5) .................   Page 9

SERVICE PARTS RETURN POLICY (Annex C) ..................................   Page 10

WARRANTY POLICY (Annex D) ...............................................  Page 11
</TABLE>

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<PAGE>   8
                           GRADALL EXCAVATOR EQUIPMENT

                                    ANNEX "A"

BASE DISCOUNT RATES:

The following discount rates shall be applicable:

<TABLE>
<S>                                                                                  <C>
G-1000 Gradall Excavator complete with standard wheel undercarriage or crawler ... 17.5%

G-1000 Gradall Excavator upperstructure only ..................................... 17.5%

G-880 Gradall Excavator complete with standard wheel undercarriage or crawler ....   20%

G-880 Gradall Excavator upperstructure only ......................................   20%

G-660 Gradall Excavator complete with standard wheel undercarriage or crawler ....   20%

G-660 Gradall Excavator upperstructure only ......................................   20%

G-660 Gradall Excavator complete with railroad wheel undercarriage ...............   20%

G-3W Gradall Excavator complete w/standard wheel undercarriage or crawler ........   20%

G-3W Gradall Excavator upperstructure only .......................................   20%

G-3R Gradall Excavator rough terrain excavator ...................................   20%

G-3XR Gradall Excavator with or without railroad wheel undercarriage .............   20%

Standard attachments for Qradall Excavator upperstructure ........................   20%

Wheel undercarriage or Crawler only and their attachments ........................   10%

Gradall Excavator Repair Parts purchased for Stock (single order value $3,000 or
more) ............................................................................   32%

Gradall Excavator Repair Parts purchased for Stock
(single order value less than $3,000) ............................................   30%

Gradall Excavator Repair Parts not purchased
on allotted stock orders (emergency) .............................................   20%

Gradall Excavator Repair Parts considered non-factory stock or obsolete ..........   15%
</TABLE>

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<PAGE>   9

It is understood that some items of a special or semi-special nature
manufactured by the Company, as well as certain items not manufactured by the
Company, will not carry the usual Base Discount Rate. If any such items are
quoted to the Distributor, the Company may quote them at a discount different
than the usual base rates or on a net price basis.

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                                GRADALL EQUIPMENT

                                    ANNEX "B"

B1 - GRADALL "VOLUME DISCOUNT":

All models of Gradall are subject to "Volume Discount" when an order meets the
following eligibility requirements:

1. Order is for two or more machines with number of "Floor Plan" orders limited
   to normal stocking levels, the remainder ordered, shipped and paid for on
   "Open Account" terms.

2. Order is for machines identical in model and machine options.

3. Machines are shipped when ready.

Suggested list prices and distributor base discount will be adjusted as follows:

<TABLE>
<S>                                                           <C>  <C>   <C>  <C>   <C>
             Quantity of Machines Ordered                      2    3     4    5     6 or More
             % Suggested List Price is Lowered                 2    3     4    5     6
             % Distributor Discount is Lowered
             against Original Suggested List
             Price.                                            1    1 1/2 2    2 1/2 3
</TABLE>

Cash Discount or 2% applies to the Net F.O.B. factory price.

                                       10
<PAGE>   11
                                GRADALL EQUIPMENT

                                    ANNEX "B"

B2 - CANCELLATION CHARGE SCHEDULE:

1. Special machines and Special Attachments: Special machines and special
attachments will be subject to the following cancellation charge schedule or
additional costs incurred by the company such as but not limited to material,
labor, overhead and engineering of special items, whichever is the greater.

Cancellation Charge Schedule if cancelled within:
90 to 60 days from promised shipment date -- 2%*
59 to 30 days from promised shipment date -- 3%*
      29 days from promised shipment date -- 4%*

* of machine order net invoice price

2. A cancellation charge of $600.00 will be billed to the distributor if a
confirmed order for a standard machine is cancelled prior to shipment. On models
with extended delivery promise (excess of 90 days) the distributor may cancel
his order within the first thirty days from date of confirmed order without any
cancellation charge.

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<PAGE>   12
                                GRADALL EQUIPMENT

                                    ANNEX "B"

B3 - GRADALL "FLOOR PLAN":

Amount to be Financed: 100% of Distributor's net invoice price.

Term: 9 Months.

Payment:

10% of contract amount due 6 months from contract date, plus accrued interest on
the unpaid balance. 10% of contract amount due 7 months from contract date, plus
accrued interest on the unpaid balance. 10% of contract amount due 8 months from
contract date, plus accrued interest on the unpaid balance. Balance of contract
amount due 9 months from contract date, plus accrued interest on the unpaid
balance.

Interest Rate: Citibank, New York Prime Rate floating monthly at the rate in
effect on the 25th day of the previous month, commencing 3 months from contract
date.

Documentation Charge: $25.00 on each transaction. Should the transaction be
discounted in accordance with the Distributor's Agreement or paid in full within
90 days of the contract date, full refund of the documentation charge will be
made.

Cash Discount: 2% 15 days.
               1% 45 days.

Short-term, unpaid-for demonstrations are permitted. If equipment is placed on
rental, the obligation must be paid in full or converted to the Rental Plan. If
equipment is sold, the obligation must be paid in full immediately.

The Warner & Swasey Company reserves the right to finance any transactions
itself or to assign all documents for financing by others.

The balloon note may be refinanced if necessary, but only at the discretion of
the Division and financing company, upon terms and conditions which they deem
acceptable.

In order to finance equipment, the Distributor must execute the appropriate
U.C.C.-1 forms, a Sale and Security Agreement, and promissory notes.

                                       12
<PAGE>   13
                                GRADALL EQUIPMENT

                                    ANNEX "B"

B4 - GRADALL "RENTAL PLAN":

Amount to be Financed: 100% of Distributor's Net Invoice Price

Term: 36 months from date of shipment.

Payment:

1% of contract amount, plus interest on the unpaid balance in each of the first
12 months from date of shipment. 2% of contract amount, plus interest on the
unpaid balance in each of the 13th thru 24th month from date of shipment.
3% of contract amount, plus interest on the unpaid balance in each of the 25th
thru 35th month from date of shipment. Balance due in the 36th month from date
of shipment plus interest.

Interest Rate: Citibank, New York, prime rate floating monthly at the rate in
effect on the 25th day of the previous month, commencing from shipment date.

Relief Provision: Skip payments will be granted provided 1 monthly payment has
been made, the equipment has been returned to the distributor, notification is
given prior to the start of the contract month and the OFF-RENTAL report form
#7943 has been received. Skip payments may be arranged as follows:
During the first 6 months from date of shipment arrangements may be made for
skip payments of principal and interest for a maximum of 5 skip payments. During
the 7th thru 12th month from date of shipment skip payments of principal only
will be granted for a maximum of 3 skip payments during this period.
During the 2nd and 3rd year from date of shipment skip payments of principal
only will be granted with a maximum of 3 skip payments within each 12 month
period.

Documentation Charge:

$25.00 on each transaction. Should the transaction be discounted in accordance
with the distributor agreement, full refund of this amount will be made.

Cash Discount: 2% 15 days.

If the equipment is sold, the obligation must be paid in full immediately. The
Warner & Swasey Company reserves the right to finance all transactions itself or
to assign the documents for financing by others.

The contract balance amount note may be refinanced if necessary, but only at the
discretion of Gradall and BWSFC upon terms and conditions which they deem
acceptable.

In order to finance any machine the distributor must execute the appropriate
U.C.C.-1 forms,. a Sale and Security Agreement and Promissory Notes.

                                       13
<PAGE>   14
                                GRADALL EQUIPMENT
                                    ANNEX "B"

B5 - CONVERSION FROM "FLOOR PLAN" TO "RENTAL PLAN":

Amount to be Financed: 100% of the net unpaid balance.

Terms: 36 months from date of the "Floor Plan" contract.

Payment: 1% of the original contract amount, plus interest on the unpaid
balance, in each of the first 12 months from date of the Floor Plan contract. 2%
a of the original contract amount, plus interest on the unpaid balance in each
of the 13th thru 24th month from date of the Floor Plan contract. 3% of the
original contract amount, plus interest on the unpaid balance in each of the
25th thru 35th month from date of the Floor Plan contract. Balance due in the
36th month from date of the Floor Plan contract plus interest. First payment is
due 1 month from conversion date. In all cases the monthly period includes the
period of time the equipment was on Floor Plan.

Interest Rate:

Citibank, New York Prime Rate floating monthly at the rate in effect on the 25th
day of the previous month, commencing from conversion date.

Relief Provisions:

Skip payments will be granted provided 1 monthly payment has been made, the
equipment has been returned to the distributor, notification is given prior to
the start of the contract month and the OFF-RENTAL report form #7943 has been
received.

Skip payments may be arranged as follows:

During the first 6 months from date of the Floor Plan contract arrangements may
be made for skip payments of principal and interest for a maximum of 5 skip
payments.

During the 7th thru 12th month from date of the Floor Plan contract skip
payments of principal only will be granted for maximum of 3 skip payments during
third period.

During the 2nd and 3rd year from date of the Floor Plan contract skip payments
of principal only will be granted with a maximum of 3 skip payments within each
12 month period.

Documentation Charge: None, since the charge was made on the "Floor Plan"
contract.

If the equipment is sold, the obligation must be paid in full immediately.

The Warner & Swasey Company reserves the right to finance all transactions
itself or to assign the documents for financing by others.

The contract balance amount note may be refinanced but only at the discretion of
Gradall and BWSFC upon terms and conditions which they deem acceptable.

In order to convert the financing of any machine from Floor Plan to Rental Plan,
the Distributor must execute the appropriate Extension Agreement and Promissory
Notes.

                                       14
<PAGE>   15
                                GRADALL EQUIPMENT

                                    ANNEX "C"

SERVICE PARTS RETURN POLICY:

Annual Parts Return - Each distributor will be allowed one annual return, month
to be determined by The Gradall Company. Maximize value of parts return limited
to 7-1/2% of previous year's total stock orders purchased. Return net credit to
dealer to be computed using current list prices less 32% discount less 10%
handling charge, dealer pays return freight.

Parts shipped in error -- can be returned within 60 days, credit computed on net
price a time of The Gradall Company shipment, with The Gradall Company paying
freight, and no handling charge. A copy of the invoice must be included with
return.

Parts ordered in error - can be returned within 60 days, credit computed on net
price at time of The Gradall Company shipment less 10%, with dealer paying
freight. A copy of The Gradall Company invoice must be included with return.

                                       15
<PAGE>   16
GRADALL

                                 WARRANTY POLICY

                                       AND

                               INSTRUCTION MANUAL

              (Annex D to Gradall Equipment Distributor Agreement)

The Gradall Company
406 Mill Ave. S.W.
New Philadelphia, Ohio 44663

                                       16
<PAGE>   17
<TABLE>
<S>                                                                       <C>
Introduction ..........................................................   D-1
New Equipment Warranty ................................................   D-1
Warranty Period .......................................................   D-2
Owner Responsibility ..................................................   D-2
Areas not Covered by Warranty .........................................   D-3
Reports Required ......................................................   D-3
Replacement & Repair Parts ............................................   D-4
Parts Inventory .......................................................   D-4
Parts Freight .........................................................   D-4
Parts (Miscellaneous) .................................................   D-4
Labor .................................................................   D-4
Diagnostic Calls ......................................................   D-5
Out-of-Territory Service ..............................................   D-5
Factory Initiated Field Campaigns .....................................   D-5
Off Rental Machines ...................................................   D-5
</TABLE>

                                       17
<PAGE>   18
                                  INTRODUCTION

This warranty is between The Gradall Company and its distributors. All customer
warranties shall be provided by the selling distributor.

The Gradall Company equipment is warranted to be free of defects in material and
workmanship. If a defect should exist, replacement of the defective part and
reimbursement for the distributor's expenses are provided for as set forth
herein.

It is important to remember that the final decision to accept or reject a claim
is based on the information presented for each situation. Some details may seem
obvious or trivial to the person preparing the claim. However, the manufacturer
may not have this same firsthand information. A properly prepared claim,
therefore, will contain all information necessary for a just and prompt
decision. Additional correspondence to obtain more information only delays
settlement.

Throughout this manual The Gradall Company and the Gradall factory will be used
interchangeably.

                             NEW EQUIPMENT WARRANTY

The Gradall Company warrants each new product made by it to be free from defects
in material and workmanship, its liability under this warranty being limited to
furnish free of charge F.0.B. distributors yard any part proving defective under
normal use and service within 6 months or 1200 hours (whichever comes first)
from the date of initial sale providing the equipment is on record with the
Company as being delivered by the distributor and all required reports current.
Distributor mileage and labor charges for warranty work will be at the rates set
by the Company. The Company shall have the opportunity to inspect all material
in question, and have it returned to the Company if it so desires. This warranty
does not cover bucket teeth, buckets or boom attachments. This warranty shall
not include any liability for direct, indirect or consequential damages or delay
resulting from the defect. Any operation beyond rated capacity or the improper
use or antlication of the product or the substitution of parts not approved by
the Company or the failure to release the machine for warranty work will void
this warranty. This warranty covers only the products of The Gradall Company.
The products of other manufacturers are covered only by such warranties as are
made by their manufactures.

THIS WARRANTY IS EXPRESSLY IN LIEU OF OTHER WARRANTIES EXPRESS OR IMPLIED,
INCLUDING ANY IMPLIED WARRANTY OR MERCHANTABILITY OR FITNESS FOR A PARTICULAR
PURPOSE.

WARRANTY PERIOD

The Gradall Company warranty is for 6 months or 1200 hours, whichever comes
first, from date of delivery. The distributor must:

1. Supply qualified servicing.

2. Use trained and experienced service personnel to do all work.

3. Equip service personnel with adequate tools to perform the required work in a
   minimum amount of time.

4. Provide  adequate  parts  inventory  to  support  machine population in his
   territory.

5. Educate all his personnel in all aspects of the Gradall product line.

6. Properly maintain the condition of parts and machines in his inventory to
   "like-new" quality standards as received from The Gradall Company.

                                       18
<PAGE>   19

                              OWNER RESPONSIBILITY

The Gradall owner is responsible for all normal preventive maintenance. This
includes:

1. Lubricate machine.

2. Keep bolts torqued to specifications.

3. Keep all safety items working.

4. Keep all filters clean.

5. Repair minor hydraulic leaks.

6. Repair minor air system leaks.

7. Use only clean hydraulic, engine and gearbox oil.

8. Perform all other preventive maintenance and safety procedures described in
   the operator's manual.

The Gradall owner is also responsible for:

1. Using the machine only on safe, approved applications.

2. Using qualified operators who have read and thoroughly understand machine
   manuals.

3. Releasing machine for warranty work or follow-up inspections. (Failure to
   release machine for inspections can void warranty.)

4. Reporting accidents to distributor or Gradall factory if distributor is not
   available.

5. Operating within machine design specifications only. (Example: do not raise
   hydraulic pressure above specified limits.)

AREA NOT COVERED BY WARRANTY

1. Buckets, bucket teeth or other boom attachments are not covered by warranty.

2. Any abuse, neglect, misapplication or overloading of the machine, accessory
   or part can void warranty. (Example: raising hydraulic pressure over
   specified limits, using oversized bucket with boom extension, using
   unapproved attachment, etc.)

3. Any component of another manufacturer sold by The Gradall Company is not
   covered by this warranty, but only by such warranty as is made by its
   manufacturer. These will be handled by The Gradall Company through normal
   warranty procedures except in the case of those items which the Gradall
   Service department indicates should be handled by the local representative
   of the manufacturer.

4. Customer installed parts carry no warranty as The Gradall Company has no
   way of knowing the condition of the machine or the ability of the
   technician who made the installation.

5. Altering original machine design without written authorization by The
   Gradall Company will void machine warranty.

6. Failure to shut down machine for repair after problem is pointed out will
   make owner responsible for cost of repair.

REPORTS REQUIRED (see separate form-completion instructions)

All required reports must be on record at The Gradall Company branch office and
factor. These include:

1. Receiving Form 7936

2. Inspection Form 7938

   Pre-Delivery -- 30, 90, 180 days (1200 Hrs.)

   Follow-up Inspection

3. Delivery & Warranty Registration Form 7937

4. On-Off Rental Report Form 7943

Failure to file any of these reports could void warranty consideration. All
reports must be typewritten, submitted on time, complete and signed.

Receiving report..................within 10 days of machine receipt.
Pre-Delivery......................within 10 days of pre-delivery inspection.

                                       19
<PAGE>   20
Delivery..........................within 10 days of machine delivery.
Followup inspection (3)...........within 10 days of inspection.
Warranty..........................within 45 days of repair.
Service ..........................as soon as possible (only required if no
                                  warranty claim submitted.)
Off-rental .......................10 days of machine return.

A warranty claim must be submitted for each repair. The Gradal Company has final
authorization regarding approval or denial of a warranty claim against or one of
its products. Do not hold a warranty claim open if the machine is returned to
work.

(Example:
Problem:  frayed tool hose and boom roller seized.
Solution: Roller replaced and new hose ordered on 15th of month. Machine
returned to work. Hose backordered and not installed until 15th of following
month. A separate warranty claim should be submitted for the roller replacement
and hose replacement.

REPLACEMENT & REPAIR PARTS

All parts are warranted for 6 months or 1200 hours, whichever comes first, from
date of installation. Parts must be installed by a Gradall distributor and
Service Report Form 7939 must be submitted to The Gradall Company documenting
replacement. The replacement parts warranty does not include labor, mileage or
freight.

Parts will be discounted at the standard rate unless a supporting invoice is
supplied which shows purchase of the original part underalternate discount
rates. All parts claimed must have been purchased new from The Gradall Company
and not altered in any way.

It may be requested that parts be returned for diagnosis before credit is
issued. If so, parts must be tagged using Form 7942 and must arrive at The
Gradall Company within 60 days of date of claim approval by The Gradall Company
field service representative. Parts should be sent prepaid or collect as
determined by the Gradall field service representative.

PARTS INVENTORY

It will be the responsibility of the distributor to maintain sufficient service
parts inventory to properly support the machine population in his territory.

PARTS FREIGHT

The Gradall Company will pay freight, F.0.B. distributor's yard, to rep lace a
failed part. Freight will be paid at surface delivery rates only.

If a part is received damaged in shipment, a claim should be entered with the
freight line. Any parts received that are unordered, incorrect, or damaged by
The Gradall Company may be returned for credit. Customs charges, etc., may be
claimed on The Gradall Company caused errors. Lost parts shipments may be
claimed from The Gradall Company. All freight claims must be accompanied by a
supporting invoice.

PARTS (MISCELLANEOUS)

1. Local purchases will be accepted only if pre-authorized by your Gradall field
   service representative.

2. Purchases over $15.OO must be accompanied by an invoice.

3. Local purchases must not exceed the cost of the replaced Gradall parts.

4. Hydraulic oil can be claimed only if The Gradall Company has preauthorized.
   All miscellaneous expenses must be thoroughly explained.

                                       20
<PAGE>   21
LABOR

The Gradail Company will pay labor at 75% of the distributor charge-out rate.
This rate must be approved by The Gradall Company before being considered
official. Daily work performed must be fully documented with labor hours for
each repair.

a. If multiple repairs are made, time must be submitted for each.

b. If repairs extend beyond one day, each day's work must be documented.

c. Repair should be made immediately after diagnosing p problem. If parts must
   be ordered, repair must commence immediately upon receipt of parts.

d. A service report must be submitted immediately explaining why repair work is
   delayed.

Excessive labor to perform a repair may be rejected by The Gradall Company based
on past job experience and records. Excessive time resulting from work being
performed by unqualified personnel will be rejected. Repair jobs that exceed 20
hours must be called to the attention of your Gradall field service
representative or the Gradall factory.
No dealer overtime premiums are allowed.
Distributor rework due to faulty repair work will not be covered. Customer labor
will not qualify for warranty. Inspections are the distributor's responsibility
and are not covered by Warranty. No meals and lodging will be paid.

DIAGNOSTIC CALLS

These trips to the machine to determine the problem, with no repairs performed,
are not covered by warranty.

MILEAGE

Mileage charges will be allowed at 75% of distributor charge-out rate not to
exceed 35 cents per mile. This rate must be approved by The Gradall Company
before being considered official. Mileage will be calculated from the nearest
distributor location. Mileage allowances for other than a service car or truck
must be pre-authorized.

OUT OF TERRITORY SERVICE

When a machine is delivered outside the selling distributor's designated
territory, 1/4 of the base discount will be held to insure proper follow up
service through out the warranty period. This service fee will be credited to
the servicing distributor as the delivery and followup inspections are
completed. 20% each for delivery, 30 day inspection and 90 day inspection and
40% following the 180 day inspection at the end of the warranty period.

The selling distributor is required to support the machine. It is permissable
for him to contract service with the Gradall distributor nearest the machine.
However, written notification must be given the Gradall factory when this is
done. Warranty and other reports will then be accepted from the contracted
servicing dealer.

FACTORY INITIATED FIELD CAMPAIGNS

These campaigns will pay labor and mileage at full charge-out rate and utilize
pre-determined time allowances. The Warranty claim form should be used. All
instructions will be detailed in an explanatory letter prior to the start of any
campaign.

OFF-RENTAL MACHINES

Warranty coverage for on/off rental machines is 1200 hours or 6 months of
operation time, whichever comes first, not to exceed 12 months from date of
initial delivery. Each time a machine comes off rental, an Off-Rental Form (No.
7943) must be sent to your local Gradall field service representative and the
Gradall factory. When the machine is returned to rental service, a new delivery
inspection must be performed and copies of the report sent to your local Gradall
field service representative and the Gradall factory. Indicate in remarks
section that machine is back on rental.

All questions relating to this warranty should be directed to The Gradall
Company.

                                       21<PAGE>   1
                                                                  EXHIBIT 10.86

INGERSOLL-RAND                                     DISTRIBUTOR SELLING AGREEMENT

         AGREEMENT, is made this 1st day of July, 1998, by and between
INGERSOLL-RAND COMPANY, a New Jersey corporation, through its Construction &
Mining Group, having offices at 1495 Valley Center Parkway, Bethlehem, PA
18017-2293 (hereinafter called "Ingersoll-Rand"), and Crescent Machinery
Company, a Corporation, organized under the laws of the State of Texas, having
offices at 2323 Irving Boulevard, Dallas, Texas 75207 (hereinafter called
"Distributor").

         WHEREAS, the Construction & Mining group of I-R is engaged in the
manufacture, distribution and sale of various items of equipment, and

         WHEREAS, Ingersoll-Rand wishes to enter into a non-exclusive agreement
for the promotion, sale and servicing of Equipment, as defined herein, within
the Area of Primary Sales Responsibility, as defined herein, and

         WHEREAS, Distributor wishes to act as a non-exclusive distributor for
Ingersoll-Rand for the promotion, sale and servicing of Equipment within the
Area of Primary Sales Responsibility, in accordance with the terms and
conditions of this Agreement.

         NOW, THEREFORE, the parties agree as follows:

1. SCOPE

         A. The term "Equipment" as used in this Agreement refers to new
equipment or parts and/or accessories manufactured or sold by Ingersoll-Rand as
specifically identified within the Discount Schedule comprising Attachment 1 of
this Agreement. Ingersoll-Rand may, with or without advance notice and without
liability to the Distributor, (1) withdraw or supersede any one or more of the
items of Equipment, and/or (2) change prices, discounts, and terms and
conditions applicable to the purchase of Equipment. Equipment not listed in
Attachment 1 is not available for purchase by the Distributor under this
Agreement.

         B. Ingersoll-Rand hereby extends to the Distributor the non-exclusive
rights to stock, sell and service Equipment within the following "Area of
Primary Sales Responsibility":

         State of Texas - Counties of Anderson, Bastrop, Bell, Blanco, Bosque,
Brazos, Brown, Burleson, Burnet, Caldwell, Collin, Comanche, Cooke, Coryell,
Dallas, Denton, Eastland, Ellis, Erath, Fannin, Fayette, Freestone, Gillespie,
Grayson, Hamilton, Hays, Henderson, Hill, Hood, Hunt, Jack, Johnson, Kaufman,
Lampasas, Lee, Llano, Milam, Mills, Navarro, Palo Pinto, Parker, Rains,
Robertson, Rockwall, Somervell, Stephens, Tarrant, Throckmorton, Travis, Van
Zandt, Washington, Williamson, Wise, and Young.

2. INGERSOLL-RAND BASIC RESPONSIBILITIES

A. Ingersoll-Rand shall advertise Equipment in various advertising media.

B. Ingersoll-Rand shall provide sales assistance, engineering and application
advice, reasonable quantities of advertising materials, campaigns and
instruction in sales and service.

C. Ingersoll-Rand shall provide Equipment in quantities necessary to meet
Distributor's reasonable requirements.

                                       1
<PAGE>   2
3. DISTRIBUTOR BASIC RESPONSIBILITIES

         A. Distributor shall conduct its business and shall maintain business
hours customary in the trade from its offices and facilities located at 2323
Irving Boulevard, Dallas, Texas 75207 and 127 East Riverside Drive, Austin,
Texas 78704. Any change in such location shall not be undertaken without the
prior written consent of Ingersoll-Rand.

         B. Distributor shall use its best efforts to develop business, to
promote the sale of and to sell Equipment covered by this Agreement within its
Area of Primary Sales Responsibility and shall furnish prompt, efficient, and
courteous service.

         C. Distributor shall pay promptly for Equipment in accordance with the
Terms of Payment as set forth within Attachment 2 of this Agreement.

         D. Distributor shall maintain a record, which Ingersoll-Rand may
examine at any time, relating to Equipment sold, showing the serial number (if
applicable) of the unit sold, the date of delivery thereof, and the name and
address of the buyer, and shall otherwise provide a summary of marketing/sales
data to Ingersoll-Rand in a form furnished by or acceptable to Ingersoll-Rand.

         E. Distributor shall maintain stocking levels in sufficient quantities
to satisfy customer requirements and shall otherwise provide inventory reports
to Ingersoll-Rand in a form furnished by or acceptable to Ingersoll-Rand.

         F. Distributor shall not sell, offer for sale, or use in the repair of
Equipment, as new Ingersoll-Rand parts, any part or parts which are not in fact
genuine Ingersoll-Rand parts.

         G. Distributor shall receive, investigate and handle all complaints
received from users of Equipment. All complaints received by Distributor which
cannot be readily remedied shall be promptly reported in detail to
Ingersoll-Rand.

         H. Distributor shall provide financial reports in a form and substance
acceptable to Ingersoll-Rand within a reasonable period of time after requested
by Ingersoll-Rand.

4. SALES OBJECTIVE AND SERVICE OBLIGATIONS

         As of the date of entering into this Agreement and at least on an
annual basis, the parties shall mutually agree and specifically identify in
writing sales objectives to be met by the Distributor over a prescribed period
of time. Failure of Distributor to satisfy these sales objectives shall be
grounds for termination of this Agreement, or at the discretion of
Ingersoll-Rand to reduce the Area of Primary Sales Responsibility.

5. USE OF TRADEMARKS AND SIGNS

         The Distributor shall not use, directly or indirectly, in whole or in
part, Ingersoll-Rand's name, or "I-R," or any other trademark or name that is
now or may hereafter be owned by Ingersoll-Rand, as part of the Distributor's
corporate or business name, or in any way in connection with the Distributor's
business, except in the manner and to the extent that Ingersoll-Rand may
specifically consent in writing. If any such trademarks or names are used in any
way by the Distributor with the express written approval of Ingersoll-Rand, the
Distributor on the termination of this Agreement shall delete and discontinue
all such use and shall not thereafter use any name, title, or expression in
connection with any business in which the Distributor may thereafter be engaged
which, in the judgment of Ingersoll-Rand, so nearly resembles any trademark or
name or part thereof owned by Ingersoll-Rand, as may be likely to lead to
confusion or uncertainty on the part of users of the manufactures of
Ingersoll-Rand.

6. WARRANTY AND LIMITATION OF LIABILITY--CONDITIONS OF SALE

         A. Attached to this Agreement is a form entitled Warranty and
Limitation of Liability, identified as Attachment 3. In accordance with such
form Ingersoll-Rand extends a warranty (with certain limitations and exclusions)
to the initial user, through the Distributor. Ingersoll-Rand will satisfy its
warranty obligations, provided that the provisions of Attachment 3 are part of
Distributor's conditions of sale to the initial user of Equipment. Should the
Distributor fail to incorporate the provisions of Attachment 3 as a basis of
sale to the initial user, the Distributor assumes all responsibility and
liability associated with the sale of such Equipment.

         B. Ingersoll-Rand reserves the right to modify the Warranty and
Limitation of Liability, comprising Attachment 3, upon written notice to
Distributor.

                                       2
<PAGE>   3
7. PAYMENT OF TAXES

         Unless otherwise stated, Ingersoll-Rand's prices do not include sales,
use, excise or similar taxes. Consequently, in addition to the prices in effect
at the time of sale, the amount of any present or future sales, use, privilege,
excise or similar tax, local, state or federal, applicable to sale of the
Equipment hereunder shall be paid by the Distributor. In lieu thereof, the
Distributor shall provide Ingersoll-Rand with a tax-exemption certificate
acceptable to the taxing authorities.

8. TERMS AND SHIPMENTS

         All shipments shall be made F.O.B. Ingersoll-Rand factories, or F.O.B.
other shipping points if specified by Ingersoll-Rand, at which point title and
risk of loss of Equipment shall pass to Distributor. Distributor shall be
responsible for the preparation or submission of claims against carriers for
damage to or loss of Equipment in transit. Ingersoll-Rand reserves the right to
accept or reject any order received under this Agreement.

9. DELIVERY

         Ingersoll-Rand shall not be liable for loss, damage, detention or delay
due to acts of God, war, riots, strikes, work stoppages, fires, accidents, acts
of civil or military authority including governmental laws, orders, priorities,
or regulations, delay in transportation, car shortages, delay by suppliers of
materials, acts of Distributor, or other causes beyond the reasonable control of
Ingersoll-Rand. If shipment or any other act or condition affecting payment for
the Equipment or any part thereof shall be delayed on account of the
Distributor, payment shall become due when Distributor is notified that the
Equipment is ready for shipment, and Equipment shall be held at Distributor's
risk and expense. Shipments are contingent upon Distributor's maintaining a
financial condition satisfactory to Ingersoll-Rand.

10. UNIFORM COMMERCIAL CODE FINANCING STATEMENTS

         At the request of Ingersoll-Rand, Distributor shall join Ingersoll-Rand
in executing security agreements and financing statements pursuant to the
Uniform Commercial Code and Distributor authorizes Ingersoll-Rand to file a
financing statement signed only by Ingersoll-Rand in all places where necessary
to perfect Ingersoll-Rand's security interest in all jurisdictions where such
authorization is permitted by law. In such jurisdiction where the applicable
processes of the Uniform Commercial Code have not become effective and
enforceable, Distributor shall at the request of Ingersoll-Rand execute such
documents and forms and authorize Ingersoll-Rand to file and record such
documents and forms in such places as may be necessary in Ingersoll-Rand's sole
judgment to perfect a security interest and/or lien in favor of Ingersoll-Rand.

11.  RELATIONSHIP BETWEEN PARTIES

         The relationship between the Distributor and Ingersoll-Rand under this
Agreement is intended to be that of buyer and seller. The Distributor is an
independent contractor and neither it nor its employees, shall under any
circumstances, be considered to be agents or employees of Ingersoll-Rand. Except
as Ingersoll-Rand may specifically authorize in writing signed by one of its
officers, the Distributor shall have no right and shall not attempt to enter
into contracts or commitments in the name of or on behalf of Ingersoll-Rand or
to bind Ingersoll-Rand in any respect whatsoever.

12.  REMEDIES

         A. The remedies of the parties are as set forth under this Agreement.

         B. With respect to the Distributor's sale of Equipment to users, or
with respect to the Distributor's own use of such Equipment, the liability of
Ingersoll-Rand to the user or Distributor shall not exceed the purchase price of
the Equipment upon which such liability arises, whether the claim is based on
contract, warranty, negligence, indemnity, strict liability or otherwise.

         C. Except for claims by third parties, in no event shall either party
to this Agreement be liable to the other for any consequential, incidental,
indirect, special or punitive loss or damage arising out of this Agreement,
whether or not such loss or damage is based on contract, warranty, negligence,
indemnity, strict liability or otherwise.

         D. The provisions of this Article shall survive the termination of this
Agreement.

                                       3
<PAGE>   4
13.  DURATION AND TERMINATION OF AGREEMENT

         A. This Agreement, unless terminated as hereinafter provided, shall
continue in full force and effect until terminated by either party, without
cause, on sixty (60) days written notice to such effect given to the other
party.

         B. This Agreement may be terminated by Ingersoll-Rand on thirty (30)
days written notice to Distributor, should the Distributor fail to satisfy the
sales objectives as prescribed by this Agreement.

         C. This Agreement may be terminated by either party on one (1) day
written notice to the other party, upon the occurrence of any other breach of
this Agreement, including, without limitation; the insolvency or bankruptcy of
the other party, the breach of any collateral agreements entered into in
connection with this Agreement, or if the financial condition or either party
becomes so impaired in the opinion of the other party as to endanger its ability
to perform its obligations in accordance with this Agreement.

         D. This Agreement may be terminated by Ingersoll-Rand on one (1) day
written notice to Distributors, if the Distributor assigns this Agreement, or
any rights hereunder, without Ingersoll-Rand's prior written consent; if there
is a change in the control or management of the Distributor which is
unacceptable to Ingersoll-Rand; or if the Distributor ceases to function as a
going concern or to conduct its operations in the normal course of business.

         E. In the event of termination of this Agreement, the return of
Equipment, if any, shall be in accordance with Ingersoll-Rand, Construction
Equipment Group returns policy in effect on the date of such termination.

         F. Upon termination, the Distributor will immediately return to
Ingersoll-Rand all price books, manuals, catalogs, literature, forms and any
other sales and administrative aids supplied by Ingersoll-Rand. In addition, all
record cards and sales data provided by Ingersoll-Rand shall be returned.

14. MISCELLANEOUS PROVISIONS

         A. Any notice to be given pursuant to this Agreement shall be addressed
to the respective parties at the address set forth in the preamble of this
Agreement.

         B. This Agreement including its attachments contains the entire and
only agreement between the parties respecting the sale to and the purchase by
the Distributor of the Equipment referred to herein, and any representation,
promise or condition not incorporated herein shall not be binding on either
party.

         C. Ingersoll-Rand and Distributor shall mutually treat as confidential
and safeguard all information,.reports and record pertaining to this Agreement.

         D. Distributor shall not transfer or assign the Agreement, or any part
thereof, or any rights thereunder without the written consent of Ingersoll-Rand.

         E Either parties failure to enforce, or waiver of, any rights or terms
of this Agreement, shall not be considered a waiver of its future rights to
strictly enforce the terms of this Agreement.

         F. This Agreement is deemed executed and delivered in the State of New
Jersey and all questions arising out of or under this Agreement shall be
governed by the laws of the State of New Jersey.

IN WITNESS WHERE OF the parties have executed this Agreement effective as of the
date set forth above.

Attachments:

1--Discount Schedule
2--Terms of Payment
3-Warranty and Limitation of Liability

                                       4
<PAGE>   5
                             INGERSOLL-RAND COMPANY

                             INGERSOLL-RAND COMPANY
                           CONSTRUCTION & MINING GROUP

                              DISTRIBUTOR AGREEMENT

                              PORTABLE COMPRESSORS
                           DOMESTIC DISCOUNT SCHEDULE

                              STOCKING DISTRIBUTOR

                                                             Date: _____________

<TABLE>
<CAPTION>
                                                                    Discount from
Complete Compressors                                            Published List Prices
<S>                                                             <C>
100 CFM through 1600 .........................................................25%
Spare Parts ...........................................................See Note A
</TABLE>

Prices for Complete Compressors are F.O.B. Factory
Discounts apply only for U.S.A. destinations, including Alaska and Hawaii.

Note "A":

NORMAL STOCK - Normal Stock orders for parts -30% Discount.

Freight:

Transportation is allowed cheapest way (TACW). I-R determines mode of
transportation. Distributor may specify mode but freight charges will be collect
or billed to distributor if carrier refuses collect shipment.

Alaska and Hawaii: TACW to port of exit Continental United States.

EMERGENCY -

Emergency orders for parts - 20% Discount.

Freight: Freight collect or billable to Distributor if carrier refuses collect
shipment. Distributor may specify mode of transportation.

                                       5
<PAGE>   6
                             INGERSOLL-RAND COMPANY
                           CONSTRUCTION & MINING GROUP

                              DISTRIBUTOR AGREEMENT

                              PORTABLE LIGHT TOWERS
                           DOMESTIC DISCOUNT SCHEDULE

                              STOCKING DISTRIBUTOR

                                                             Date: _____________

<TABLE>
<CAPTION>
Complete Light Towers                                         Discount from
                                                           Published List Prices
<S>                                                         <C>
L6 and LS Series ............................................1-5 (units) - 30%
 .............................................................6 or more - 30+5%
</TABLE>

Prices for Complete Light Towers are F.O.B Factory.

Discounts apply only for U.S.A. destinations, including Alaska and Hawaii.

                                       6
<PAGE>   7
                             INGERSOLL-RAND COMPANY
                           CONSTRUCTION & MINING GROUP

                              DISTRIBUTOR AGREEMENT

                              PORTABLE LIGHT TOWERS
                           DOMESTIC DISCOUNT SCHEDULE

                              STOCKING DISTRIBUTOR

                                                             Date: _____________

                                                               Discount from
Complete GENSETS                                           Published List Prices

<TABLE>
<CAPTION>
Complete GENSETS                                           Published List Prices
<S>                                                        <C>
 30 and 50 kw ...............................................................40%
 SpareParts ..........................................................See Note A
</TABLE>

Prices for Complete Compressors are F.O.B. Factory
Discounts apply only for U.S.A. destinations, including Alaska and Hawaii.

Note "A":

NORMAL STOCK - Normal Stock orders for parts - 30% Discount.

Freight: Transportation is allowed cheapest way (TACW). I-R determines mode of
transportation. Distributor may specify mode but freight charges will be collect
or billed to distributor if carrier refuses collect shipment.

Alaska and Hawaii: TACW to port of exit Continental United States.

EMERGENCY -
Emergency orders for parts - 20% Discount.
Freight: Freight collect or billable to Distributor if carrier refuses collect
shipment. Distributor may specify mode of transportation.

                                       7
<PAGE>   8
                             INGERSOLL-RAND COMPANY
                           CONSTRUCTION & MINING GROUP

                          DISTRIBUTOR SELLING AGREEMENT

                            TERMS OF PAYMENT SCHEDULE

Terms of Payment described herein supersede all prior Terms of Payment
Schedules.

All terms not defined herein shall have the meaning set forth in the
Ingersoll-Rand Company Construction & Mining Group Distributor Selling Agreement
Form LD-131, November 1990.

Distributor shall pay I-R on the following terms:

A. Equipment, Parts and Pre-Paid Freight.

On Equipment, parts and pre-paid freight payment in full shall be made within 30
days from the date of invoice of the respective purchase. Any sums not paid
within such time shall accrue a service charge of 1 % per month for each month
or any part thereof upon such unpaid amount.

B. Special Terms.

At the time of entry of an order with I-R, and acceptance of that order by I-R
for Equipment, the Distributor may elect the following Special Terms of Payment
for Equipment for Stock or for inclusion in the Distributor's Rental Fleet.

I-R shall deliver to the Distributor a Schedule of Payment which shall reflect
the Distributor's payment obligations to I-R pursuant to the terms hereinafter
set forth.

NOTE: DISTRIBUTOR WILL DEEM TO HAVE ACCEPTED SUCH PAYMENT SCHEDULE UNLESS
WRITTEN NOTICE IS RECEIVED WITHIN 30 DAYS OF THE DATE OF SAID SCHEDULE.

Amortization shall be reflected based on the following percentages:

Group -2.778% of net purchase price of equipment (freight excluded) per month
              for 36 months.
Group -2.381% of net purchase price of equipment (freight excluded) per month
              for 42 months.
Group -2.083% of net purchase price of equipment (freight excluded) per month
              for 48 months.

On equipment invoiced under the standard floor plan program, payment of each
principal curtailment and interest, as hereinafter provided, shall commence on
the earlier of the happening of the following events:

1) Thirty (30) days after the equipment has been placed in service or in the
Distributor's Rental Fleet.
2) Thirty (30) days after the termination of the floor plan, and on the same day
of each month thereafter until the entire balance is paid.

When a rental split floor plan is offered, distributor will remit a
pre-specified percentage of all distributors rental revenue invoiced or
collected during the floor plan period. Payment of each principal curtailment
and interest, as hereinafter provided shall commence thirty (30) days after the
termination of the floor plan, and on the same day of each month thereafter
until the entire balance is paid.

                                       8
<PAGE>   9
IN THE EVENT THAT ANY TIME THE EQUIPMENT IS SOLD, OR DISPOSED OF, DISTRIBUTOR
SHALL PAY IMMEDIATELY THE OUTSTANDING UNPAID AMOUNT OF THE PURCHASE PRICE OF THE
EQUIPMENT TOGETHER WITH ALL THE INTEREST ACCRUED.

Interest on the principal balance shall be calculated monthly at a rate equal to
the prime rate (in effect at Chase Manhattan Bank in New York as of the 25th day
of the preceding month) plus or minus a predetermined number of basis points for
each month there remains outstanding a portion of the principal amount.

                                       9
<PAGE>   10
INGERSOLL-RAND                                   CONSTRUCTION & MINING EQUIPMENT
CONSTRUCTION & MINING                                       SOLD BY DISTRIBUTORS

                                    Warranty

Ingersoll-Rand, though its distributor, warrants that each item of equipment
manufactured by it and delivered hereunder to the initial user to be free of
defects in material and workmanship for a periods of three (3) months from
initial operation or six (6) months from the sate of shipment to the initial
user, whichever first occurs.

With respect to the following types of equipment, the warranty period enumerated
will apply in lieu of the foregoing warranty period.

A. Aftercoolers, Drill Moutnings and Klemm Rotary Heads - the earlier of six (6)
months from initial operation or nine (9) month from date of shipment to the
initial user.

B. Portable Compressors, Portable Generator Sets (GENSETS), Portable Light
Towers, and Abrasive Blasting Equipment - the earlier of twelve (12) months from
shipment to, or the accumulation of 2,000 hours of service by the initial user.

C. All Compressor Air Ends, GENSET Generators and Paving Brakers - The earlier
of twenty-four (24) months from shipment to, or the accumulation of 4,000 hours
of service by, the initial user. For Air Ends, the warranty against defects will
include replacement of the complete Air End, provided the original Air End is
returned assembles and unopened.

D. Pavers, Forklifts, Milling Machines, Pedestrian Compactors (including
baseplates, upright and walk behinds) and Rotary Drills - the earlier of six (6)
months from shipment to, or the accumulation of 1,000 hours of service by, the
initial user.

E. Jackhammers and Self-Propelled Compactors --The earlier of twelve (12) months
from shipment to or accumulation of 1,000 hours of service by the initial user.

F. Downhole Drills - In lieu of the repair or replacement of defective parts,
Ingersoll-Rand may elect to issue fill or partial credit toward the purchase of
a new part. The extent of credit issued will be determined by pro rating against
the normal service life of the part in question.

G. Spare Parts (excluding Downhole Drills) - Three (3) months from the date of
shipment.

Ingersoll-Rand will provide a new part or repaired part, at its election, in
place of any part which is found upon its inspection to be defective in material
and workmanship during the period prescribed above. Such part will be repaired
or replaced without charge to the initial user during normal working hours at
the place of business of an Ingersoll-Rand distributor authorized to sell the
type of equipment involved or other establishment authorized by Ingersoll-Rand.
User must present proof of purchase and date at the time of exercising warranty.

This warranty does not apply to failures occurring as a result of abuse, misuse,
negligent repairs, corrosion, erosion and normal wear and tear, alterations or
modification made to the product without express written consent of
Ingersoll-Rand; or the failure to follow the recommended operating practices in
the product's operating and maintenance publications.

Accessories or equipment furnished by Ingersoll-Rand, but manufactured by
others, including, but not limited to, engines, tires, batteries, engine
electrical equipment, hydraulic transmissions, carriers, shall carry whatever
warranty the manufactures have conveyed to Ingersoll-Rand and which can be
passes into the initial user.

THIS WARRANTS IS IN LIEU OF ALL OTHER WARRANTIES (EXCEPT OF TITLE), EXPRESSED OR
IMPLIED, AND THERE ARE NO WARRANTIES OF MERCHANTABILITY OR OF FITNESS FOR A
PARTICULAR PURPOSE.

                             Limitation of Liability

THE REMEDIES OF THE USER SET FORTH UNDER THE PROVISIONS OF WARRANTY OUTLINED
ABOVE ARE EXCLUSIVE AND THE TOTAL LIABILITY OF INGERSOLL-RAND OR ITS
DISTRIBUTORS WITH RESPECT TO THIS SALE OR THE EQUIPMENT AND SERVICE FURNISHED
HEREUNDER, IN CONNECTION WITH THE PERFORMANCE OR BREACH THEREOF, OR FROM THIS
SALE DELIVERY, INSTALLATION, REPAIR OR TECHNICAL DIRECTION COVERED

                                       10
<PAGE>   11

BY OR FURNISHED UNDER THIS SALE WHETHER BASED ON CONTRACT, WARRANT, NEGLIGENCE,
INDEMNITY, STRICT LIABILITY OR OTHERWISE SHALL NOT EXCEED THE PURCHASE PRICE OF
THE UNIT IF EQUIPMENT UPON WHICH SUCH LIABILITY IS BASED.

INGERSOLL-RAND, ITS SUPPLIER(S) AND ITS DISTRIBUTORS IN NO EVENT SHALL BE LIABLE
TO THE USER, ANY SUCCESSORS IN INTEREST OR ANY BENEFICIARY OR ASSIGNEE RELATING
TO THIS SALE FOR ANY CONSEQUENTIAL, INCIDENTAL, INDIRECT, SPECIAL OR PUNITIVE
DAMAGES ARISING OUT OF THIS SALE OR ANY BREACH THEREOF, OR ANY DEFECTS IN, OR
FAILURE OF, OR MALFUNCTION OF THE EQUIPMENT UNDER THIS SALE WHETHER BASED UPON
LOSS OF USE, LOST PROFITS OR REVENUE, INTEREST, LOST GOODWILL, WORK STOPPAGE,
IMPAIRMENT OF OTHER GOODS, LOSS BY REASON OF SHUTDOWN OR NON-OPERATION,
INCREASED EXPENSES OF OPERATION OF THE EQUIPMENT. COST OF PURCHASED OF
REPLACEMENT POWER OR CLAIMS OF USERS OR CUSTOMERS OF THE USER FOR SERVICE
INTERRUPTION WHETHER OR NOT SUCH LOSS OR DAMAGE IS BASED ON CONTRACT, WARRANTY,
NEGLIGENCE, INDEMNITY, STRICT LIABILITY OR OTHERWISE.

                                       11

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