SB 601R---29---035

Page 1 of 1

Dec 08/2010

SERVICE BULLETIN

REVISION TRANSMITTAL SHEET

CL ---600 ---2B19 Canadair Regional Jet (CRJ) Aircraft

SERVICE BULLETIN 601R ---29 ---035

SUBJECT: Hydraulic Power --- Hydraulic System No.1 --- Replacement of the

Accumulator 601R75138 ---1 (08 ---60163 ---001 or 08 ---60163 ---002) by

601R75139 ---1 (11093 ---4)

This page transmits:

Revision A of Service Bulletin 601R --- 29 --- 035,

pages 1 thru 20, dated Dec 08/2010

The change in this revision have an effect on aircraft that have incorporated a previous issue of this service bulletin.

Reason:

Revised Planning Information, paragraph 1., to:

Add PART A and Part B

Add reducer P/N MS21916J8---6 information.

Revised Accomplishment Instructions, paragraph 2., to:

Add PART A and Part B.

Add new instructions for the removal and the installation of the reducer and also

change Figure 1 and add Figure 2.

Revised Material Information, paragraph 3., to:

Add a part to Disposition of Parts section, paragraph 3.D.

This revision also includes small editorial changes that do not have an effect on the technical

content.

Instructions:

Discard the copy of Service Bulletin 601R --- 29 --- 035, Initial Issue, dated May 11/2010.

Replace with the copy attached.

Service Bulletin History:

Initial issue, dated May 11/2010

1
Page 1 of 20

May 11/2010 SB 601R---29---035

Revision A, Dec 08/2010

SERVICE BULLETIN

Technical

Publications

THIS SERVICE BULLETIN IS SENT TO EACH OPERATOR. IF THE OPERATOR HAS LEASED

HAS SOLD AIRCRAFT OR TRANSFERRED SPARES IN THE LAST SIX MONTHS, THIS SERVICE

BULLETIN MUST BE SENT TO THE NEW OWNER, UNLESS CONFIRMATION WAS RECEIVED

THAT BOMBARDIER COMMERCIAL AIRCRAFT HAS INCLUDED THE NEW OPERATOR

AIRCRAFT, THIS SERVICE BULLETIN MUST BE SENT TO THE LESSEE. IF THE OPERATOR

ON THE DISTRIBUTION LIST.

ATA SYSTEM: 29 ---11 NUMBER: 601R ---29 ---035

SUBJECT: Hydraulic Power --- Hydraulic System No.1 --- Replacement of the

Accumulator 601R75138 ---1 (08 ---60163 ---001 or 08 ---60163 ---002) by

601R75139 ---1 (11093 ---4)

1. PLANNING INFORMATION

A. Effectivity

(1) Aircraft Affected:

Service Bulletin: CL ---600---2B19 Canadair Regional Jet (CRJ) Aircraft Serial

Numbers 7003 thru 7067, 7069 thru 7990, 8000 thru 8999.

Production: There is no production effectivity at this time.

NOTE: The instructions in this service bulletin are only applicable to the

systems and parts installed at the time of delivery of the aircraft or as

changed by Bombardier Service Bulletin(s). Before you do this

bulletin, examine all STC, STA or equivalent action changes to make

sure this bulletin can be completed.

B. Reason

(1) Condition

It is possible for the screw caps to disconnect and cause damage to the

aircraft structure and systems.
SERVICE BULLETIN 601R---29 ---035

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May 11/2010 SB 601R---29---035

Revision A, Dec 08/2010

(2) Evidence

Seven in---service aircraft had one screw cap disconnect from the body of the

accumulator.

(3) Objective/Benefit

This service bulletin gives the procedure to replace the hydraulic system No.1

accumulator 601R75138---1 (08---60163---001 or 08---60163---002) by

the hydraulic system No.1 accumulator 601R75139---1 (11093---4).

The installation of the new accumulator will prevent the disconnection of the

end cap from the body of the accumulator.

C. Description

This service bulletin is divided into 2 parts: PART A and PART B.

PART A --- Replacement of the hydraulic system No.1 accumulator

The safety lockpins are installed at the nose and at the main landing gears. The

hydraulic pressure is released from hydraulic system No.1. Circuit breakers are

opened. The aft equipment ---compartment door is opened.

The hydraulic system No.1 accumulator is removed. If installed, reducer P/N

MS21916D8---6 is replaced by P/N MS21916J8---6. The new accumulator is

installed.

The circuit breakers are closed. The reservoir of hydraulic system No.1 is

replenished. Hydraulic system No.1 is bled. The aft equipment ---compartment

access door is closed.

For Aircraft that have the initial issue of this service bulletin incorporated and that

have reducer P/N MS21916D8 ---6 installed

PART B --- Replacement of the reducer of the hydraulic system No.1

accumulator

The safety lockpins are installed at the nose and at the main landing gears. The

hydraulic pressure is released from hydraulic system No.1. Circuit breakers are

opened. The aft equipment ---compartment door is opened.

The reducer is removed from the accumulator. The new reducer is installed on

accumulator.
SERVICE BULLETIN 601R---29 ---035

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May 11/2010 SB 601R---29---035

Revision A, Dec 08/2010

The circuit breakers are closed. The accumulator is replenished. The reservoir of

hydraulic system No.1 is replenished. Hydraulic system No.1 is bled. The aft

equipment ---compartment access door is closed.

D. Compliance

PART A --- Replacement of the hydraulic system No.1 accumulator

Recommended Service Bulletin. Bombardier recommends that PART A of this

service bulletin be done no more than 4000 flight cycles or 2 years (whichever

comes first) from the release date on this service bulletin, unless otherwise directed

by the airworthiness authority of the operator.

This service bulletin does not affect Airworthiness Limitations (AWLs) or Damage

Tolerance inspections (DTIs).

NOTE: For the hydraulic system No.1 only, it is not necessary to do Alert Service

Bulletin A601R---29---029, Hydraulic Power --- Hydraulic System No.1 and

No.2 --- Inspection of the Accumulator Screw---Caps, when this service

bulletin is done.

NOTE: It is not necessary to do Service Bulletin 601R---29---033, Hydraulic Power

--- Hydraulic System No.1 --- Inspection of the Threads

of the Accumulator Screw---Caps (P/N 08---60163---001 and

P/N 08---60163---002), when this service bulletin is done.

For Aircraft that have the initial issue of this service bulletin incorporated and that

have reducer P/N MS21916D8 ---6 installed

PART B --- Replacement of the reducer of the hydraulic system No.1

accumulator

Recommended Service Bulletin. Bombardier recommends that PART B of this

service bulletin be done no more than 1200 flight cycles or no later than 8 months

(whichever comes first) from the installation of hydraulic system No. 1 accumulator

P/N 601R75139---1, unless otherwise directed by the airworthiness authority of the

operator.

E. Approval

The technical content of this service bulletin has been approved under the authority

of the TCCA Design Approval Organization No: DAO #93---Q ---02.

F. Manpower

The man hours given below are an estimate for direct labor done by an

experienced crew on an aircraft prepared for maintenance.

This estimate does not include the time necessary for:
SERVICE BULLETIN 601R---29 ---035

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May 11/2010 SB 601R---29---035

Revision A, Dec 08/2010

− Administrative functions such as planning, liaison, familiarization, and report writing.

− Non productive elapsed time such as rest time, having meals, and crew shift

changes.

− Elapsed time such as for paint to dry, sealant to cure, and fuel tank venting.

− Preparation for modification (unless specified in the accomplishment

instructions) such as cleaning and getting parts, tools, consumables, and

ground equipment.

− Quality assurance inspections, troubleshooting and/or correction of

discrepancies found when a task is done.

− All other activities that are not considered by Bombardier as directly related to

the accomplishment of this procedure.

NOTE: For any on --- site labor assistance, please speak with a Fleet

Services representative for a quote. The Fleet Services Team can

be contacted via the CRC at 514 --- 855 --- 8500 or email at

thd.crj@aero.bombardier.com.

PART A --- Replacement of the hydraulic system No.1 accumulator

It will take an estimated 5.0 man---hours to complete this service bulletin. The

man---hours are divided as shown in the table that follows (elapsed cure time is not

included in the man---hour summary given above):

TASK MAN ---HOURS

(1) Job Set ---Up 1.0

(2) Procedure 2.5

(3) Test 1.0

(4) Job Close---Out 0.5

For Aircraft that have the initial issue of this service bulletin incorporated and that

have reducer P/N MS21916D8 ---6 installed

PART B --- Replacement of the reducer of the hydraulic system No.1

accumulator

It will take an estimated 4.5 man---hours to complete this service bulletin. The

man---hours are divided as shown in the table that follows (elapsed cure time is not

included in the man---hour summary given above):
SERVICE BULLETIN 601R---29 ---035

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May 11/2010 SB 601R---29---035

Revision A, Dec 08/2010

TASK MAN ---HOURS

(1) Job Set ---Up 1.0

(2) Procedure 2.0

(3) Test 1.0

(4) Job Close---Out 0.5

G. Material --- Price and Availability

PART A --- Replacement of the hydraulic system No.1 accumulator

(1) There are no kits for this service bulletin. The part in the table that follows is

necessary to do this service bulletin and is available from Bombardier

Commercial Aircraft.

PART NUMBER NAME QUANTITY

MS21916J8---6 Reducer 1

NAS1612---8 Packing 1

(2) Please send a purchase order to the address below to schedule the kit:

Bombardier

Service Bulletin Kit Support Team

123 Garratt Blvd, N42---24

Toronto, Ontario

Canada M3K 1Y5

Fax: 416---375---3060

Phone: 416---375---3920

Email: sbkits@aero.bombardier.com
SERVICE BULLETIN 601R---29 ---035

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Revision A, Dec 08/2010

For All aircraft

(3) The part in the table that follows is necessary to do this service bulletin and is

available from Tactair.

PART NUMBER NAME QUANTITY

601R75139---1

(11093---4)

Accumulator 1

(4) Please send a purchase order to the address below to schedule the part:

Tactair Fluid Controls Inc.

4806 West Taft Road

Liverpool, NY 13088, USA

Fax: (315) 457---5595

Phone: (315) 451---3928

Email: customer_support@tactair.com

Please contact Tactair Fluid Controls for terms and conditions.

For Aircraft that have the initial issue of this service bulletin incorporated and that

have reducer P/N MS21916D8 ---6 installed

PART B --- Replacement of the reducer of the hydraulic system No.1

accumulator

(5) There are no kits for this service bulletin. The part in the table that follows is

necessary to do this service bulletin and is available from Bombardier

Commercial Aircraft.

PART NUMBER NAME QUANTITY

MS21916J8---6 Reducer 1

NAS1612---8 Packing 1

(6) Please send a purchase order to the address below to schedule the kit:

Bombardier

Service Bulletin Kit Support Team

123 Garratt Blvd, N42---24

Toronto, Ontario

Canada M3K 1Y5

Fax: 416---375---3060

Phone: 416---375---3920

Email: sbkits@aero.bombardier.com

Please contact the Service Bulletin Kit Support Team at the address above for

terms and conditions.
SERVICE BULLETIN 601R---29 ---035

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Revision A, Dec 08/2010

H. Tooling --- Price and Availability

There are no tool kits for this service bulletin.

I. Weight and Balance

WEIGHT ARM MOMENT ¡

1.4 (lb) 838.9 (inches) 1.174 (1000 lb---in.)

0.6 (kg) 21.31 (m) 0.013 (1000 kg ---m)

¡ The value in the Moment column is divided by 1000. Refer

to the Weight & Balance Manual CSP A ---041.

J. Electrical Load Data

Not changed.

K. References

Restriction and/or Special Instruction (RSI) C ---A261.

Restriction and/or Special Instruction (RSI) C ---A271.

Modification Summary TC601R17849, Revision A.

Tactair Fluid Controls Service Letter TFC ---SIL ---2008.

Aircraft Maintenance Manual, CSP A ---001.

For Bombardier reference only: PCA 5325.

L. Other Publications Affected

Illustrated Parts Catalog (IPC) CSP A ---006 ........................ .

M. Relationship Chart

PRE ---SB

PART NUMBER NAME POST ---SB

PART NUMBER NAME

601R75138---1

(08---60163---001

or

08---60163---002)

Accumulator

601R75139---1

(11093---4) Accumulator

MS21916D8---6 Reducer MS21916J8---6 Reducer
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Revision A, Dec 08/2010

2. ACCOMPLISHMENT INSTRUCTIONS

PART A --- Replacement of the hydraulic system No.1 accumulator

A. Job Set ---Up

REFERENCE DESIGNATION

AMM 10---11---00---000---801 Removal of the Nose Landing Gear Lockpin

AMM 10---11---00---400---801 Installation of the Nose Landing Gear Lockpin

AMM 10---11---00---000---802 Removal of the Main Landing Gear Lockpins

AMM 10---11---00---400---802 Installation of the Main Landing Gear Lockpins

AMM 12---00---06---863---802 Release Hydraulic Pressure --- Systems No. 1

and No. 2

AMM 12---12---29---611---803 Replenish the Reservoirs of the Hydraulic

Systems

AMM 24---00---00---910---801 Electrical/Electronic Safety Precautions

AMM 29---00---00---910---801 Hydraulic Safety Precautions

AMM 29---10---00---870---801 Bleed Hydraulic System No.1

AMM 29---11---11---000---801 Removal of the Accumulator Assembly ---

Systems No.1 and No.2

AMM 29---11---11---400---801 Installation of the Accumulator Assembly ---

Systems No.1 and No.2

WARNING: MAKE SURE THAT THE SAFETY LOCKPINS ARE INSTALLED ON THE

NOSE AND MAIN LANDING GEAR. THE NOSE AND MAIN LANDING

GEAR CAN ACCIDENTALLY RETRACT. THIS CAN CAUSE INJURIES TO

PERSONS AND/OR DAMAGE TO EQUIPMENT.

(1) Install the safety lockpins at the nose and the main landing gears

(Refer to AMM 10---11---00---400---801 and AMM 10---11---00---400---802).
SERVICE BULLETIN 601R---29 ---035

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Revision A, Dec 08/2010

WARNING: OBEY ALL THE HYDRAULIC SAFETY PRECAUTIONS WHEN YOU DO

WORK ON ANY HYDRAULIC SYSTEM OR ON A HYDRAULIC SYSTEM

COMPONENT. IF YOU DO NOT OBEY THE SAFETY PRECAUTIONS,

YOU CAN CAUSE INJURY TO PERSONS AND/OR DAMAGE TO

EQUIPMENT.

(2) Obey all the hydraulic safety precautions

(Refer to AMM 29---00---00---910---801).

(3) Release the hydraulic pressure from hydraulic system No. 1

(Refer to AMM 12---00---06---863---802).

WARNING: OBEY ALL THE SAFETY PRECAUTIONS WHEN YOU DO

MAINTENANCE ON OR NEAR ELECTRICAL/ELECTRONIC

EQUIPMENT. IF YOU DO NOT OBEY THE SAFETY PRECAUTIONS,

INJURIES TO PERSONS AND/OR DAMAGE TO THE EQUIPMENT CAN

OCCUR.

(4) Obey all the electrical/electronic safety precautions

(Refer to AMM 24---00---00---910---801).

(5) Open, safety, and tag the circuit breakers that follow:

CB PANEL CB NO. NAME ZONE

CBP ---1 M5 ENG START L 221

CBP ---2 A5 HYD PUMP 1 222

CBP ---2 G14 HYD SYST AC PUMP CONT 1 222

(6) Open the aft equipment ---compartment door.
SERVICE BULLETIN 601R---29 ---035

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Revision A, Dec 08/2010

B. Procedure

Refer to Figure 1.

For Aircraft that have reducer P/N MS21916D8 ---6 installed

(1) Remove the accumulator (1) and the reducer (2) from hydraulic system No.1

(Refer to AMM 29---11---11---000---801).

(2) Discard the reducer (2).

(3) Install the new accumulator (1) and the new reducer (2) on hydraulic system

No.1 (Refer to AMM 29---11---11---400---801).

For Aircraft that have reducer P/N MS21916J8 ---6 installed

(4) Remove the accumulator (1) from hydraulic system No.1

(Refer to AMM 29---11---11---000---801).

(5) Install the new accumulator (1) on hydraulic system No.1 (Refer to AMM

29---11---11---400---801).
SERVICE BULLETIN 601R---29 ---035

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Revision A, Dec 08/2010

C. Job Close ---Out

(1) Remove all tools, equipment, and unwanted materials from the work area.

(2) Remove the tags and close the circuit breakers that follow:

CB PANEL CB NO. NAME ZONE

CBP ---1 M5 ENG START L 221

CBP ---2 A5 HYD PUMP 1 222

CBP ---2 G14 HYD SYST AC PUMP CONT 1 222

(3) Replenish the reservoirs of the hydraulic system No.1

(Refer to AMM 12---12---29---611---803).

(4) Bleed hydraulic system No.1 (Refer to AMM 29---10---00---870---801).

(5) Close the aft equipment ---compartment door.

(6) Make sure that the nose and the main landing gear lockpins are removed

(Refer to AMM 10---11---00---000---801 and AMM 10---11---00---000---802).

(7) When PART A of this service bulletin is completed, make this entry in the

applicable logbook(s): “Service Bulletin 601R---29---035, Revision A, Hydraulic

Power --- Hydraulic System No.1 --- Replacement of the Accumulator

601R75138---1 (08---60163---001 or 08---60163---002) by 601R75139---1

(11093---4), PART A, incorporated.”
SERVICE BULLETIN 601R---29 ---035

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Revision A, Dec 08/2010

For Aircraft that have the initial issue of this service bulletin incorporated and that

have reducer P/N MS21916D8 ---6 installed

PART B --- Replacement of the reducer of the hydraulic system No.1

accumulator

D. Job Set ---Up

REFERENCE DESIGNATION

AMM 10---11---00---000---801 Removal of the Nose Landing Gear Lockpin

AMM 10---11---00---400---801 Installation of the Nose Landing Gear Lockpin

AMM 10---11---00---000---802 Removal of the Main Landing Gear Lockpins

AMM 10---11---00---400---802 Installation of the Main Landing Gear Lockpins

AMM 12---00---06---863---802 Release Hydraulic Pressure --- Systems No. 1

and No. 2

AMM 12---12---29---611---803 Replenish the Reservoirs of the Hydraulic

Systems

AMM 12---12---29---614---802 Replenish the Accumulators of the Hydraulic

Systems

AMM 24---00---00---910---801 Electrical/Electronic Safety Precautions

AMM 29---00---00---910---801 Hydraulic Safety Precautions

AMM 29---10---00---870---801 Bleed Hydraulic System No.1

WARNING: MAKE SURE THAT THE SAFETY LOCKPINS ARE INSTALLED ON THE

NOSE AND MAIN LANDING GEAR. THE NOSE AND MAIN LANDING

GEAR CAN ACCIDENTALLY RETRACT. THIS CAN CAUSE INJURIES TO

PERSONS AND/OR DAMAGE TO EQUIPMENT.

(1) Install the safety lockpins on the nose and the main landing gears

(Refer to AMM 10---11---00---400---801 and AMM 10---11---00---400---802).

WARNING: OBEY ALL THE HYDRAULIC SAFETY PRECAUTIONS WHEN YOU DO

WORK ON ANY HYDRAULIC SYSTEM OR ON A HYDRAULIC SYSTEM

COMPONENT. IF YOU DO NOT OBEY THE SAFETY PRECAUTIONS,

YOU CAN CAUSE INJURY TO PERSONS AND/OR DAMAGE TO

EQUIPMENT.

(2) Obey all the hydraulic safety precautions

(Refer to AMM 29---00---00---910---801).

(3) Release the hydraulic pressure from hydraulic system No. 1

(Refer to AMM 12---00---06---863---802).
SERVICE BULLETIN 601R---29 ---035

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Revision A, Dec 08/2010

WARNING: OBEY ALL THE SAFETY PRECAUTIONS WHEN YOU DO

MAINTENANCE ON OR NEAR ELECTRICAL/ELECTRONIC

EQUIPMENT. IF YOU DO NOT OBEY THE SAFETY PRECAUTIONS,

INJURIES TO PERSONS AND/OR DAMAGE TO THE EQUIPMENT CAN

OCCUR.

(4) Obey all the electrical/electronic safety precautions

(Refer to AMM 24---00---00---910---801).

(5) Open, safety, and tag the circuit breakers that follow:

CB PANEL CB NO. NAME ZONE

CBP ---1 M5 ENG START L 221

CBP ---2 A5 HYD PUMP 1 222

CBP ---2 G14 HYD SYST AC PUMP CONT 1 222

(6) Open the aft equipment ---compartment door.

E. Procedure

Refer to Figure 2.

(1) Prepare the accumulator (6) of hydraulic system No. 1 for the removal of the

reducer (7) as follows:

(a) Remove the valve cap (3) from the pressure gauge(1).

(b) Remove the lockwire (5) from the nut (4).

WARNING: USE PROTECTIVE GLOVES TO CAREFULLY LOOSEN THE VALVE

NUT ON THE NITROGEN CHARGING VALVE. KEEP YOUR HANDS

AWAY FROM THE NITROGEN LEAKAGE. THE NITROGEN LINE IS

PRESSURIZED AND CAN CAUSE INJURIES.

(c) Wear protective gloves. Slowly turn the charging valve (2)

counter ---clockwise two turns. Let the nitrogen pressure decrease to

zero.

(d) Tighten the nut (4) on the charging valve (2) to a maximum of

50 lbfSin.±5 lbfSin(5.65Nm±1.13Nm).

(e) Safety the nut (4) with lockwire (5).
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Revision A, Dec 08/2010

(f) Install the valve cap (3) on the charging valve (2).

(2) Replace the reducer (7) of the hydraulic system No. 1 accumulator as follows:

(a) Disconnect the hydraulic line from the reducer (7).

(b) Remove the reducer (7) and the packing (8) from the accumulator (6).

(c) Discard the reducer (7) and the packing (8).

(d) Lubricate the new packing (8) with clean hydraulic fluid.

(e) Install the new reducer (7) and the new packing (8) in the

accumulator (6).

(f) Connect the hydraulic line to the new reducer (7).
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Revision A, Dec 08/2010

F. Job Close ---Out

(1) Remove all tools, equipment, and unwanted materials from the work area.

(2) Remove the tags and close the circuit breakers that follow:

CB PANEL CB NO. NAME ZONE

CBP ---1 M5 ENG START L 221

CBP ---2 A5 HYD PUMP 1 222

CBP ---2 G14 HYD SYST AC PUMP CONT 1 222

(3) Replenish the accumulator

(Refer to AMM 12---12---29---614---802).

(4) Replenish the reservoirs of hydraulic system No.1

(Refer to AMM 12---12---29---611---803).

(5) Bleed hydraulic system No.1 (Refer to AMM 29---10---00---870---801).

Refer to Figure 2.

(6) With leak detection compound, examine the area adjacent to the reducer (7)

at the accumulator (6) and the nitrogen line for nitrogen leaks.

(7) Close the aft equipment ---compartment door.

(8) Make sure that the nose and the main landing gear lockpins are removed

(Refer to AMM 10---11---00---000---801 and AMM 10---11---00---000---802).

(9) When PART B of this service bulletin is completed, make this entry in the

applicable logbook(s): “Service Bulletin 601R---29---035, Revision A, Hydraulic

Power --- Hydraulic System No.1 --- Replacement of the Accumulator

601R75138---1 (08---60163---001 or 08---60163---002) by 601R75139---1

(11093---4) , PART B, incorporated.”
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Revision A, Dec 08/2010

Removal/Installation --- Accumulator of Hydraulic System No.1

Figure 1

rsb601r29035_001.cgm, sc, oct 2010

LEGEND

1. Accumulator

601R75138--1 (08--60163--01 or

08--60163--002) (Pre--Mod).

601R75139--1 (11093--4) (Post--Mod).

2. Reducer

MS21916D8--6 (Pre--Mod)

MS21916J8--6 (Post--Mod).

NOTE

For aircraft that have reducer

MS21916D8--6 installed.

1

A

B

A

1

B

1 2
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Revision A, Dec 08/2010

Removal/Installation --- Reducer of the Accumulator of Hydraulic System No.1

Figure 2

rsb601r29036_001.cgm, sc, oct 2010

6. Accumulator

601R75139--1 (11093--4).

7. Reducer

MS21916D8--6 (Pre--Mod)

MS21916J8--6 (Post--Mod).

8. Packing NAS1612--8.

LEGEND

1. Pressure gauge.

2. Charging valve.

3. Valve cap.

4. Nut.

5. Lockwire MS20995C32.

6 7 8

HYDRAULIC LINE

(REF)

A

NITROGEN LINE

(REF)

NITROGEN LINE

(REF)

1

4 5

2

3

A

B

B
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Revision A, Dec 08/2010

3. MATERIAL INFORMATION

A. Kit Information

None.

B. Consumable Information

The materials that follow are necessary to do this service bulletin and can be

ordered from Bombardier or purchased directly from industry sources. If the

material is ordered from Bombardier, there can be some lead time because of shelf

life of the material.

CONSUMABLES

SPECIFICATION QUANTITY NAME REFERENCE

SAE AS1241 or

BAMS 564---003

As

necessary

Hydraulic fluid,

phosphate ester

base

02---001 ¡

MIL ---L ---25567, TYP

I or II

As

necessary

Compound, leak

detection, oxygen

systems (or

equivalent)

05---037 ¡

MS20995C32 or

ASTM A580

As

necessary

Lockwire,

corrosion--- resistant

steel, 0.032 in. (0.81

mm) diameter

composition 302 or

304

05---004 ¡

¡ Refer to AMM 51---31---00---990---801

NOTE: To complete this list of consumables, refer to the different tasks as

references in this service bulletin

C. Special Tools and Equipment

For a list of special tools and equipment, refer to the different tasks given as

references in this service bulletin.
SERVICE BULLETIN 601R---29 ---035

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Revision A, Dec 08/2010

D. Disposition of Parts

The table that follows shows the disposition of installed parts on the aircraft (or

spares), and the relation of installed parts (or spares) to the new parts to be

installed with this service bulletin.

PART A --- Replacement of the hydraulic system No.1 accumulator

PRE ---SB

PART NUMBER

NAME QUANTITY DC POST ---SB

PART

NUMBER

NAME

601R75138---1

(08---60163---001

or

08---60163---002)

Accumulator 1 RTN 601R75139---1

(11093---4) Accumulator

MS21916D8---6 Reducer 1 DIS MS21916J8---6 Reducer

NAS1612---8 Packing 1 DIS NAS1612---8 Packing

For Aircraft that have the initial issue of this service bulletin incorporated and that

have reducer P/N MS21916D8 ---6 installed

PART B --- Replacement of the reducer of the hydraulic system No.1

accumulator

PRE ---SB

PART NUMBER

NAME QUANTITY DC POST ---SB

PART

NUMBER

NAME

MS21916D8---6 Reducer 1 DIS MS21916J8---6 Reducer

NAS1612---8 Packing 1 DIS NAS1612---8 Packing

Disposition code (DC):

DIS: Discard Part.

RTN: Refer to Tactair Fluid Controls Service Information Letter

TFC ---SIL ---2008.
SERVICE BULLETIN 601R---29 ---035

Page 20 of 20

May 11/2010 SB 601R---29---035

Revision A, Dec 08/2010

Return parts to the address that follows:

Tactair Fluid Controls Inc.

Attn: Customer Support Repair

4806 West Taft Road

Liverpool, NY 13088, USA

Phone: (315) ---451---3928

Fax: (315) ---457---5595

1
THANK YOU FOR ANSWERING THIS EVALUATION FORM 

UPON COMPLETION OF THIS EVALUATION FORM/COMPLIANCE SHEET, FAX TO 

450-476-7300 

SERVICE BULLETIN EVALUATION FORM/COMPLIANCE SHEET 

(YOUR IDEAS WILL HELP US PROVIDE BETTER BULLETINS) 

SERVICE BULLETIN : 601R-29-035 ISSUE: A 

 STRONGLY DISAGREE NEUTRAL AGREE STRONGLY 

 DISAGREE AGREE 

• Instructions to do the Service Bulletin 

were accurate. 

Comments:

    

• Illustration(s), figure(s), picture(s) and/or 

kit drawing(s) were helpful to carry out 

instructions. 

Comments:

    

• If a parts kit was required, did the kit 

contents received agree with the 

contents listed in the bulletin? 

Comments: 

    

• Aircraft hands-on work was 

accomplished in estimated time. 

 Comments:

    

• Overall, I was satisfied with this Service 

Bulletin. 

 Comments: 

    

PLEASE SUPPLY US WITH THE FOLLOWING DATA AND FAX TO (450) 476-7300: 

OPERATOR: NAME (Please print) 

SERVICE CENTER: TELEPHONE: 

AIRCRAFT SERIAL NO.: FACSIMILE: 

DATE OF SB 

INCORPOARTION