Document:

<PAGE>
                                                                 Exhibit 10.4(d)
                                                                  2001 Form 10-K

                               THE OILGEAR COMPANY
                      RESOLUTIONS OF THE BOARD OF DIRECTORS
                           ADOPTED ON DECEMBER 12,2001

Whereas, the Company maintains a separate non-qualified benefit plan known as
the Deferred Director's Fee Plan (the "Plan") and now wishes to amend same,

NOW, THEREFOR, BE IT RESOLVED, that a new Appendix A is hereby added to the plan
to read as follows, effective as of the date of adoption of this resolution:

For purposes of this Appendix A, a 'Change in Control' with respect to Oilgear
shall be deemed to have occurred if and when: (i) any 'person' (as such term is
used in Sections 13(d) and 14(d) of the Securities Exchange Act of 1934), other
than The Oilgear Company or any of its subsidiaries, the Oilgear Stock
Retirement Plan, the Oilgear Salaried Savings Plus Plan, or any other qualified
or non-qualified plan maintained by Oilgear or any of its affiliates, is or
becomes a beneficial owner (as defined in Rule 13d-3 promulgated under such
Act), directly or indirectly, of securities of Oilgear representing 20% or more
of the combined voting power of Oilgear's then outstanding securities, or (ii)
at any time less than a majority of the members of the Oilgear Board of
Directors shall be persons who were either nominated for election by the Board
of Directors (prior to any Change in Control) or were elected by the Board of
Directors (prior to any Change in Control) or (iii) The Oilgear Company sells,
leases or otherwise transfers all or substantially all of its assets not in the
ordinary course of business to another person or party, or (iv) the company is
combined (by merger, consolidation or otherwise) with another corporation and as
a result of such combination, less than 60% of the outstanding securities of the
surviving or resulting corporation are owned in the aggregate by the former
shareholders of the company, or (v) the shareholders of the company approve of a
plan of complete liquidation or dissolution of the company.

Upon the occurrence of a Change in Control, then notwithstanding any other
provision of this Plan,the Company shall promptly cause to be paid to each
eligible participant or beneficiary a lump sum amount equal to the present value
of all benefits expected under the Plan, unless prior to the first date on which
a Change in Control occurs, such participant or beneficiary files a written
irrevocable election form with the Company electing not to receive such lump
sum, but instead to receive benefits as provided for in the Plan. In the case of
a participant who has begun receiving benefits, the annual expected benefit
amount shall be the amount paid during the last calendar year . For an active
employee, the expected annual benefit shall be the amount projected to be
received if he had continued employment to age 65 and the policy funding the
plan had remained in effect, earning at the rate in effect in the year prior to
the change in control. In the event of a change in control as defined above, the
cost recovery provisions are hereby waived and it is presumed that the Company
will receive the full tax benefit of any deductible payments or accruals. The
present value shall be calculated using the annual rate of interest on 10 year
Treasury securities for the month immediately prior to the occurrence of a
Change in Control event as described above Such payments shall be made without
regard to whether an active Eligible Employee's employment with Oilgear or any
of its affiliates is continuing. however, if an active Eligible Employee in fact
so continues and then Plan also continues, appropriate provisions shall be made
so that any subsequent payments made from this Plan are reduced to reflect the
value of such lump sum payment."

Anything in this agreement to the contrary notwithstanding, in the event it
shall be determined that any payment or distribution by the Company to or for
the benefit of the employee (whether paid or payable or distributed or
distributable pursuant to this agreement or otherwise, but determined without
regard to any additional payments required under this Section II ) would be
subject to the excise tax imposed by section 4999 of the internal revenue code
of 1986, as amended or any interest or penalties are incurred by the employee
with respect to such excise tax, (such excise tax, together with any such
interest and penalties, are hereinafter collectively referred to as the "Excise
Tax"), then the employee shall be entitled to receive an additional payment ( a
"Gross-up Payment") in an amount such that after payment by the employee of all
taxes (including any interest or penalties imposed with respect to such taxes) ,
including, without limitation, any income taxes ( and any interest and penalties
imposed with respect thereto) and Excise Tax imposed on the Gross-up Payment,
the employee retains an amount of the Gross-up payment equal to the Excise Tax
imposed upon the payments<PAGE>
                                                                   Exhibit 10.34

                     AMENDMENT NO. 2 TO AMENDED AND RESTATED
                          REFINANCING CREDIT AGREEMENT

                  THIS AMENDMENT NO. 2 (this "Amendment") is dated as of March
30, 2001, and amends the Amended and Restated Refinancing Credit Agreement, by
and among WESTINGHOUSE AIR BRAKE TECHNOLOGIES CORPORATION (formerly known as
Westinghouse Air Brake Company) and THE GUARANTORS FROM TIME TO TIME PARTY
THERETO and THE BANKS FROM TIME TO TIME PARTY THERETO and ABN AMRO BANK N.V., as
bookrunner and co-syndication agent, THE CHASE MANHATTAN BANK, as administrative
agent, and THE BANK OF NEW YORK, as co-syndication agent, MELLON BANK, N.A., as
documentation agent, and CHASE MANHATTAN BANK USA, N.A. (successor in interest
to Chase Manhattan Bank Delaware), as an issuing bank, dated as of November 19,
1999, as amended by Amendment No. 1 to Amended and Restated Refinancing Credit
Agreement, dated as of November 16, 2000 (as amended, the "Credit Agreement").

                                   BACKGROUND
                                   ----------

                  The parties hereto desire to amend the Credit Agreement to (i)
modify the minimum interest coverage ratio, (ii) allow the Borrower to make a
loan to the current management of Vapor Power, a division of Vapor Corporation,
or an entity controlled by them ("Vapor Management") in connection with the sale
of Vapor Power to Vapor Management (the "Vapor Power Sale"), and (iii) allow the
Borrower to guaranty certain obligations of Vapor Management to a lender
providing financing to Vapor Management in connection with the Vapor Power Sale.
Vapor Corporation shall remain a Guarantor under the Credit Agreement.

                              OPERATIVE PROVISIONS
                              --------------------

                  NOW THEREFORE, the parties hereto, in consideration of their
mutual covenants and agreements herein contained, incorporating the
above-defined terms herein, and intending to be legally bound hereby agree as
follows:

                                    ARTICLE I
                                   AMENDMENTS
                                   ----------

         1.01 Defined Terms; References. Terms not otherwise defined in this
Amendment shall have the respective meanings ascribed to them in the Credit
Agreement. Each reference to "hereof," "hereunder," "herein," and "hereby" and
similar references contained in the Credit Agreement and each reference to "this
Agreement" and similar references contained in the Credit Agreement shall, on
and after the date hereof, refer to the Credit Agreement as amended hereby.

         1.02 Indebtedness, Rents Covenant. As of the date hereof, a new clause
(ix) is added to Section 8.2.1 of the Credit Agreement as follows:

         "(ix) Indebtedness in the form of a Guaranty permitted under Section
8.2.3 hereof."

         1.03 Guaranties Covenant. As of the date hereof, Section 8.2.3 of the
Credit Agreement is deleted in its entirety and the following is inserted
therefor:

<PAGE>

                  "8.2.3.  Guaranties.
                           ----------

                           Neither the Borrower nor any of its Subsidiaries
                  shall, at any time, directly or indirectly, become or be
                  liable in respect of any Guaranty, or assume, guaranty, become
                  surety for, endorse or otherwise become or remain directly,
                  indirectly or contingently liable upon or with respect to any
                  obligation or liability of any other Person, except for (i)
                  Guaranties of the Indebtedness of the Borrower and its
                  Subsidiaries permitted hereunder and (ii) a Guaranty by the
                  Borrower of the obligations of Vapor Management to the lender
                  providing financing to Vapor Management in connection with the
                  Vapor Power Sale in an amount not to exceed $3,500,000."

         1.04 Loans and Investments Covenant. As of the date hereof, Section
8.2.4 of the Credit Agreement is deleted in its entirety and the following is
inserted therefor:

                  "8.2.4.  Loans and Investments.
                           ---------------------

                           Neither the Borrower nor any of its Subsidiaries
                  shall, at any time, make or suffer to remain outstanding any
                  loan or advance to, or purchase, acquire, or own any stock,
                  bonds, notes, or securities of, or any partnership interest
                  (whether general or limited) or limited liability company
                  interest in, or any other investment or interest in, or make
                  any capital contribution to or other Investment in, any other
                  Person, or agree, become or remain liable to do any of the
                  foregoing, except:

                           (i) trade credit extended on usual and customary
                  terms in the ordinary course of business;

                           (ii) advances to employees of Loan Parties to meet
                  expenses incurred by such employees in the ordinary course of
                  business;

                           (iii) Permitted Investments;

                           (iv) Permitted Acquisitions; and

                           (v) a loan from the Borrower to Vapor Management for
                  the consummation of the Vapor Power Sale in an amount not to
                  exceed $1,000,000."

         1.05 Minimum Interest Coverage Ratio. As of the date hereof, Section
8.2.14 of the Credit Agreement is deleted in its entirety and the following is
inserted therefor:

                  "8.2.14.  Minimum Interest Coverage Ratio.
                            -------------------------------

                           The Loan Parties shall not permit the ratio of Cash
                  Flow to consolidated interest expense (including the interest
                  component of payments made in connection with capitalized
                  leases, synthetic leases, and similar leases) of Borrower and
                  it Subsidiaries, calculated as of the end of each fiscal
                  quarter for the immediately preceding four (4) fiscal quarters
                  then ended, (i) for the fiscal quarters ending on or before
                  September 30, 2001, to be less than 3.25 to 1.0, and (ii) for
                  the fiscal quarters ending on December 31, 2001, or
                  thereafter, to be less than 3.5 to 1.0."

         1.06 Mergers. Each of the Loan Parties acknowledges, represents, and
warrants that, on or about December 31, 2000, MP International I, Inc., MP
International II, Inc., and TFL, Inc., each a

                                      -2-
<PAGE>

Delaware corporation, merged with and into WABTEC Holding Corp. which was the
surviving company of the merger.

                                   ARTICLE II
                         REPRESENTATIONS AND WARRANTIES
                         ------------------------------

                  As of the date hereof, the Loan Parties, jointly and
severally, represent and warrant to the Agent and each of the Banks as follows:

         2.01 The execution and delivery by the Loan Parties of this Amendment,
the consummation by the Loan Parties of the transactions contemplated by the
Credit Agreement as amended hereby, and the performance by each Loan Party of
its respective obligations hereunder and thereunder have been duly authorized by
all necessary corporate proceedings, if any, on the part of each Loan Party. On
the date of Borrower's execution hereof, there are no set-offs, claims,
defenses, counterclaims, causes of action, or deductions of any nature against
any of the Obligations.

         2.02 This Amendment has been duly and validly executed and delivered by
each Loan Party and constitutes, and the Credit Agreement as amended hereby
constitutes, the legal, valid and binding obligations of each Loan Party
enforceable in accordance with the terms hereof and thereof, except as the
enforceability of this Amendment or the Credit Agreement as amended hereby may
be limited by bankruptcy, insolvency or other similar laws of general
application affecting the enforcement of creditors' rights or by general
principles of equity limiting the availability of equitable remedies.

         2.03 Neither the execution and delivery of this Amendment, nor
consummation of the transactions contemplated hereby or by the Credit Agreement
as amended hereby, nor compliance with the terms and provisions hereof or
thereof will (a) violate any Law, (b) conflict with or result in a breach of or
a default under the articles or certificate of incorporation or bylaws of any
Loan Party or any material agreement or instrument to which any Loan Party is a
party or by which any Loan Party or any of their respective properties (now
owned or hereafter acquired) may be subject or bound, (c) require any consent or
approval of any Person under the terms of any such agreement or instrument, (d)
result in the creation or imposition of any Lien upon any property (now owned or
hereafter acquired) of any Loan Party or (e) require any authorization, consent,
approval, license, permit, exemption or other action by, or any registration,
qualification, designation, declaration or filing with, any Official Body.

         2.04 After giving effect to the amendments made herein: (i) no Event of
Default under and as defined in the Credit Agreement has occurred and is
continuing, and (ii) the representations and warranties of each of Borrower and
the other Loan Parties contained in the Credit Agreement and the other Loan
Documents are true and correct on and as of the date hereof with the same force
and effect as though made on such date, except to the extent that any such
representation or warranty expressly relates solely to a previous date. Vapor
Corporation shall remain a Guarantor under the Credit Agreement.

                                   ARTICLE III
                  EFFECT, EFFECTIVENESS, CONSENT OF GUARANTORS
                  --------------------------------------------

         3.01 Effectiveness. This Amendment shall become effective in accordance
with its terms on the date that Agent shall have received from each of the
Borrower, the Loan Parties, and the Required Banks a counterpart hereof signed
by such party or facsimile or other written confirmation (in form satisfactory
to Agent) that such party has signed a counterpart hereof. Within forty-five
(45) days

                                      -3-
<PAGE>

of the date hereof, each of the Loan Parties shall have delivered to the Agent a
certificate signed by the Secretary or Assistant Secretary of such Loan Party
certifying as appropriate as to (a) authorization of such Loan Party to enter
into the transactions contemplated by this Amendment, (b) the names of the
officers of such Loan Party authorized to execute this Amendment and the true
signatures of such officers, on which the Agent and each Bank may conclusively
rely, and (c) copies of the organizational documents of such Loan Party that
have been amended, restated, supplemented or otherwise modified since the date
of the last certification to the Agent, including such Loan Party's certificate
of incorporation and bylaws, each certified, to the extent applicable, by the
appropriate state official where such documents are filed in a state office.

         3.02 Amendment. The Credit Agreement is hereby amended in accordance
with the terms hereof, and this Amendment and the Credit Agreement shall
hereafter be one agreement and any reference to the Credit Agreement in any
document, instrument, or agreement shall hereafter mean and include the Credit
Agreement as amended hereby. In the event of irreconcilable inconsistency
between the terms or provisions hereof and the terms or provisions of the Credit
Agreement, the terms and provisions hereof shall control.

         3.03 Joinder of Guarantors. Each of the Guarantors hereby joins in this
Amendment to evidence its consent hereto, and each Guarantor hereby reaffirms
its obligations set forth in the Credit Agreement, as hereby amended, and in
each Guaranty Agreement and each other Loan Document given by it in connection
therewith.

                                   ARTICLE IV
                                 MISCELLANEOUS
                                 -------------

         4.01 Credit Agreement. Except as specifically amended by the provisions
hereof, the Credit Agreement and all other Loan Documents shall remain in full
force and effect and are hereby ratified and confirmed by the parties hereto.

         4.02 Counterparts, Telecopy Signatures. This Amendment may be signed in
any number of counterparts each of which shall be deemed an original, but all of
which together shall constitute one and the same instrument; and, delivery of
executed signature pages hereof by telecopy transmission from one party to
another shall constitute effective and binding execution and delivery
respectively of this Amendment by such party.

         4.03 Governing Law. This Amendment shall be governed by and construed
and enforced in accordance with the laws of the Commonwealth of Pennsylvania
without regard to its conflict of laws principles.

         4.04 Expenses. The Loan Parties agree, jointly and severally, to
reimburse the Agent for its reasonable out-of-pocket expenses arising in
connection with the negotiation, preparation and execution of this Amendment,
including the reasonable fees and expenses of Buchanan Ingersoll PC, counsel for
the Agent.

         4.05 Severability. If any provision of this Amendment, or the
application thereof to any party hereto, shall be held invalid or unenforceable,
such invalidity or unenforceability shall not affect any other provisions or
applications of this Amendment which can be given effect without the invalid and
unenforceable provision or application, and to this end the parties hereto agree
that the provisions of this Amendment are and shall be severable.

                                      -4-
<PAGE>

         4.06 Banks' Consent. Each Bank, by its execution hereof, hereby
consents to this Amendment pursuant Section 11.1 of the Credit Agreement. IN

         WITNESS WHEREOF, the parties hereto, by their officers duly authorized,
have executed and delivered this Amendment as of the date first above written.

                            [SIGNATURE PAGES FOLLOW]

                                      -5-
<PAGE>

                      [SIGNATURE PAGE 1 OF 21 OF AMENDMENT]

                                             BORROWER:

                                             WESTINGHOUSE AIR BRAKE
                                             TECHNOLOGIES CORPORATION

                                             By: _________________________(SEAL)
                                                 Name:
                                                 Title:

                                             GUARANTORS:

                                             RAILROAD FRICTION PRODUCTS
                                             CORPORATION; VAPOR CORPORATION;
                                             MOTIVEPOWER CANADA CORPORATION;
                                             WABTEC DISTRIBUTION COMPANY;
                                             MOTIVEPOWER, INC.; YOUNG TOUCHSTONE
                                             COMPANY; WABTEC ENGINE SYSTEMS
                                             COMPANY; WABTEC HOLDING CORP.
                                             (successor by merger to MP
                                             International I, Inc., and MP
                                             International II, Inc.); WABTEC
                                             CORPORATION

                                             By: _________________________(SEAL)
                                                 Name:
                                                 Title:  Vice President of each
                                                         of the above listed
                                                         companies

<PAGE>

                      [SIGNATURE PAGE 2 OF 21 OF AMENDMENT]

                                     BANKS:

                                     ABN AMRO BANK N.V., individually and as
                                     Bookrunner and Co-Syndication Agent

                                     By:
                                        ---------------------------------------
                                         Name:
                                         Title:

                                     By:
                                        ---------------------------------------
                                         Name:
                                         Title:

<PAGE>

                      [SIGNATURE PAGE 3 OF 21 OF AMENDMENT]

                                    MELLON BANK, N.A., individually and as
                                    Documentation Agent

                                    By:
                                       ----------------------------------------
                                       Name:
                                       Title:

<PAGE>

                      [SIGNATURE PAGE 4 OF 21 OF AMENDMENT]

                                   THE CHASE MANHATTAN BANK, individually and as
                                   Administrative Agent

                                   By:
                                      ------------------------------------------
                                      Name:
                                      Title:

<PAGE>

                      [SIGNATURE PAGE 5 OF 21 OF AMENDMENT]

                                   NATIONAL CITY BANK OF PENNSYLVANIA

                                   By:
                                      -----------------------------------------
                                      Name:
                                      Title:

<PAGE>

                      [SIGNATURE PAGE 6 OF 21 OF AMENDMENT]

                                  PNC BANK, NATIONAL ASSOCIATION

                                  By:
                                     ------------------------------------------
                                     Name:
                                     Title:

<PAGE>

                      [SIGNATURE PAGE 7 OF 21 OF AMENDMENT]

                                 FLEET NATIONAL BANK

                                 By:
                                    --------------------------------------------
                                    Name:
                                    Title:

<PAGE>

                      [SIGNATURE PAGE 8 OF 21 OF AMENDMENT]

                                U.S. BANK NATIONAL ASSOCIATION

                                By:
                                   --------------------------------------------
                                   Name:
                                   Title:

<PAGE>

                      [SIGNATURE PAGE 9 OF 21 OF AMENDMENT]

                               THE BANK OF NEW YORK, individually and as
                               Co-Syndication Agent

                               By:
                                  ---------------------------------------------
                                  Name:
                                  Title:

<PAGE>

                     [SIGNATURE PAGE 10 OF 21 OF AMENDMENT]

                              BANK ONE MICHIGAN

                              By:
                                 ----------------------------------------------
                                 Name:
                                 Title:

<PAGE>

                     [SIGNATURE PAGE 11 OF 21 OF AMENDMENT]

                            FIRST UNION NATIONAL BANK

                            By:
                               ------------------------------------------------
                               Name:
                               Title:

<PAGE>

                     [SIGNATURE PAGE 12 OF 21 OF AMENDMENT]

                                      DG BANK
                                      DEUTSCHE GENOSSENSCHAFTSBANK AG

                                      By:
                                         --------------------------------------
                                         Name:
                                         Title:

                                      By:
                                         --------------------------------------
                                         Name:
                                         Title:

<PAGE>

                     [SIGNATURE PAGE 13 OF 21 OF AMENDMENT]

                                    THE BANK OF NOVA SCOTIA

                                    By:
                                       -----------------------------------------
                                        Name:
                                        Title:

<PAGE>

                     [SIGNATURE PAGE 14 OF 21 OF AMENDMENT]

                                    BANK OF TOKYO-MITSUBISHI TRUST CO.

                                    By:
                                       ----------------------------------------
                                       Name:
                                       Title:

<PAGE>

                     [SIGNATURE PAGE 15 OF 21 OF AMENDMENT]

                                   CREDIT AGRICOLE INDOSUEZ

                                   By:
                                      -----------------------------------------
                                      Name:
                                      Title:

                                   By:
                                      -----------------------------------------
                                      Name:
                                      Title:

<PAGE>

                     [SIGNATURE PAGE 16 OF 21 OF AMENDMENT]

                                  CREDIT LYONNAIS NEW YORK BRANCH

                                  By:
                                     ------------------------------------------
                                     Name:
                                     Title:

<PAGE>

                     [SIGNATURE PAGE 17 OF 21 OF AMENDMENT]

                               CREDIT SUISSE FIRST BOSTON

                               By:
                                  ---------------------------------------------
                                  Name:
                                  Title:

                               By:
                                  ---------------------------------------------
                                  Name:
                                  Title:

<PAGE>

                     [SIGNATURE PAGE 18 OF 21 OF AMENDMENT]

                              THE DAI-ICHI KANGYO BANK, LTD.

                              By:
                                 ----------------------------------------------
                                 Name:
                                 Title:

<PAGE>

                     [SIGNATURE PAGE 19 OF 21 OF AMENDMENT]

                               MANUFACTURERS AND TRADERS TRUST COMPANY

                               By:
                                  ---------------------------------------------
                                  Name:
                                  Title:

<PAGE>

                     [SIGNATURE PAGE 20 OF 21 OF AMENDMENT]

                               SUNTRUST BANK

                               By:
                                  ---------------------------------------------
                                  Name:
                                  Title:

<PAGE>

                     [SIGNATURE PAGE 21 OF 21 OF AMENDMENT]

                              ISSUING BANK:

                              CHASE MANHATTAN BANK USA, N.A.

                              By:
                                 ----------------------------------------------
                                 Name:
                                 Title:

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