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SB 601R- - - 32- - - 107 Page 1 of 1 Dec 08/2010
SERVICE BULLETIN
REVISION TRANSMITTAL SHEET CL- - -600- - -2B19 Canadair Regional Jet (CRJ) Aircraft SERVICE BULLETIN 601R - - -32 - - -107 S U B J E C T: L a n d i n g G e a r --- B r a k e S y s t e m --- R e p l a c e m e n t o f t h e A c c u m u l a t o r 601R75138 - - -1 (P/N 08 - - -60163 - - -001 or 08 - - -60163 - - -002) by 601R75139 - - -1 (P/N 11093 - - -4) This page transmits:
Revision B of Service Bulletin 601R- - - 32- - - 107, pages 1 thru 12, dated Dec 08/2010 The changes in this revision have no effect on aircraft that have incorporated a previous issue of this service bulletin.
Reason:
Revised Accomplishment Instructions, paragraph 2., to:
Replace part numbers 601R75238- - - 1 for 601R75138- - - 1 and 601R75239- - - 1 for 601R75139- - - 1 in Figure 1.
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- - - 32- - - 107, Revision A, dated Jun 17/ 2010.
Replace with the copy attached.
Service Bulletin History:
Initial issue, dated May 11/2010.
Revision A, dated Jun 17/2010.
Page 1 of 12 SB 601R- - - 32- - - 107May 11/2010 Revision B, Dec 08/2010
SERVICE BULLETIN 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 .
T echnical Publications ATA SYSTEM: 32- - -43 NUMBER: 601R - - -32- - -107 S U B J E C T: L a n d i n g G e a r --- B r a k e S y s t e m --- R e p l a c e m e n t o f t h e A c c u m u l a t o r 601R75138 - - -1 (P/N 08 - - -60163 - - -001 or 08 - - -60163 - - -002) by 601R75139 - - -1 (P/N 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 e quivalent action changes to make sure this bulletin can be completed.
SERVICE BULLETIN 601R- - -32- - -107 Page 2 of 12 SB 601R- - - 32- - - 107May 11/2010 Revision B, Dec 08/2010 B. Reason
(1) Condition It is possible for the screw caps of the brake accumulator to have cracks in their inner shoulder. This can cause the screw cap to disconnect and cause damage to the aircraft structure and systems.
(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 inboard and outboard brake accumulators 601R75138- - - 1 (08- - - 60163- - - 001 or 08- - - 60163- - - 002) by inboard and outboard brake accumulators 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 The safety lockpins are installed at the nose and at the main landing gears. The wheel chocks are put at the main wheels. The hydraulic pressure is released from hydraulic systems No.2 and No.3. Circuit breakers are opened. The access panel 121AL is removed and the forward equipment- - - compartment door is opened. The nitrogen pressure is released from the outboard and the inboard brake accumulators.
The inboard and outboard brake accumulators are removed. The new inboard and outboard accumulators are installed.
The circuit breakers are closed. The inboard and outboard brake accumulators are pressurized with nitrogen. Hydraulic systems No.2 and No.3 are bled. The accumulators of the inboard and outboard brakes are bled. The operational test of the inboard and outboard brake accumulators is done. The brake accumulators are examined for leaks. Access panel 121AL is installed and the forward equipment- - -compartment door is closed.
SERVICE BULLETIN 601R- - -32- - -107 Page 3 of 12 SB 601R- - - 32- - - 107May 11/2010 Revision B, Dec 08/2010 D. Compliance Recommended Service Bulletin. Bombardier recommends that 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.
NOTE: It is not necessary to do Alert Service Bulletin A601R- - - 32- - - 103, Landing G e a r --- B r a k e S y s t e m --- I n s p e c t i o n o f t h e A c c u m u l a t o r S c r e w --- C a p s (P/N 08- - - 60163- - - 001, 08- - - 60163- - - 002), when this service bulletin is done.
NOTE: It is not necessary to do Service Bulletin 601R- - - 32- - - 106, Landing Gear
- - - Brake System - - - 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.
This service bulletin does not affect Airworthiness Limitations (AWLs) or Damage T olerance Inspections (DTIs).
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. M a n p o w e r 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:
− 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.
SERVICE BULLETIN 601R- - -32- - -107 Page 4 of 12 SB 601R- - - 32- - - 107May 11/2010 Revision B, Dec 08/2010 NOTE: For 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.
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 M A N --- H O U R S ( 1 ) J o b S e t --- U p 1.0
(2) Procedure 2.5
(3) T est 1.0
(4) Job Close- - -Out 0.5 G. Material - - - Price and Availability ( 1 ) T h e r ea r en ok i t sf o rt h i ss e r v i c eb u l l e t i n . T h ep a r ti nt h et a b l et h a tf o l l o w si s necessary to do this service bulletin and is available from T actair.
PART NUMBER NAME QUANTITY 601R75139- - - 1 (11093- - - 4) Accumulator 2
(2) Please send a purchase order to the address below to schedule the parts:
T actair Fluid Controls Inc.
4806 West T aft Road Liverpool, NY 13088, USA Fax: (315) 457- - - 5595 Phone: (315) 451- - - 3928 Email: customer_support@tactair.com Please contact T actair Fluid Controls for terms and conditions.
(3) Refer to paragraph 3.B. for a list of consumables for this service bulletin.
H. T ooling - - - Price and Availability There are no tool kits for this service bulletin.
Refer to paragraph 3.C. for a list of special tools and equipment for this service bulletin.
SERVICE BULLETIN 601R- - -32- - -107 Page 5 of 12 SB 601R- - - 32- - - 107May 11/2010 Revision B, Dec 08/2010 I. Weight and Balance WEIGHT ARM MOMENT ¡
2.8 (lb) 57.0 (inches) 0.160 ( 1000 lb--- in.)
1.2 (kg) 1.45 (m) 0.002 (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- - -A262.
Modification Summary TC601R17849, Revision A.
T actair Fluid Controls Service Letter TFC- - - SIL- - - 2008.
Aircraft Maintenance Manual, CSP A- - - 001.
Structural Repair Manual, CSP A- - - 008.
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 - - -SBPART NUMBER NAME 601R75138- - - 1 (08- - - 60163- - - 001 or 08- - - 60163- - - 002) Accumulator 601R75139- - - 1(11093- - - 4) Accumulator
SERVICE BULLETIN 601R- - -32- - -107 Page 6 of 12 SB 601R- - - 32- - - 107May 11/2010 Revision B, Dec 08/2010
2. ACCOMPLISHMENT INSTRUCTIONS A . J o b S e t --- U p Reference Information
REFERENCE DESIGNATION A M M 1 0 --- 1 1 --- 0 0 --- 0 0 0 --- 8 0 1Removal of the Nose Landing Gear Lockpin A M M 1 0 --- 1 1 --- 0 0 --- 0 0 0 --- 8 0 2Removal of the Main Landing Gear Lockpins A M M 1 0 --- 1 1 --- 0 0 --- 4 0 0 --- 8 0 1Installation of the Nose Landing Gear Lockpin A M M 1 0 --- 1 1 --- 0 0 --- 4 0 0 --- 8 0 2Installation of the Main Landing Gear Lockpins A M M 1 2 --- 0 0 --- 0 6 --- 8 6 3 --- 8 0 2Release Hydraulic Pressure - - - Systems No. 1 and No. 2 A M M 1 2 --- 0 0 --- 0 6 --- 8 6 3 --- 8 0 4Release Hydraulic Pressure - - - System No. 3 A M M 1 2 --- 1 2 --- 2 9 --- 6 1 1 --- 8 0 3Replenish the Reservoirs of the Hydraulic Systems A M M 1 2 --- 1 2 --- 2 9 --- 6 1 4 --- 8 0 2Replenish the Accumulators of the Hydraulic Systems A M M 2 4 --- 0 0 --- 0 0 --- 9 1 0 --- 8 0 1 Electrical/Electronic Safety Precautions A M M 2 9 --- 0 0 --- 0 0 --- 9 1 0 --- 8 0 1 Hydraulic Safety Precautions A M M 2 9 --- 1 0 --- 0 0 --- 8 7 0 --- 8 0 2 Bleed Hydraulic System No. 2 A M M 2 9 --- 1 0 --- 0 0 --- 8 7 0 --- 8 0 3 Bleed Hydraulic System No. 3 A M M 3 2 --- 4 3 --- 0 0 --- 8 7 0 --- 8 0 1 Bleeding of the Brakes A M M 3 2 --- 4 3 --- 1 6 --- 0 0 0 --- 8 0 1 Removal of the Brake Accumulator A M M 3 2 --- 4 3 --- 1 6 --- 4 0 0 --- 8 0 1 Installation of the Brake Accumulator A M M 3 2 --- 4 3 --- 1 6 --- 7 1 0 --- 8 0 1Operational T est of the Brake Accumulator WARNING: MAKE SURE THAT THE SAFETY LOCKPINS ARE INSTALLED ON THE NOSE AND MAIN LANDING GEAR. THE NOSE AND MAIN LANDING GEAR CAN ACCIDENTALL Y RETRACT . THIS CAN CAUSE INJURY TO PERSONS AND/OR DAMAGE TO EQUIPMENT .
(1) Install the safety lockpins at the nose landing gear and at the main landing gear (Refer AMM 10- - - 11- - - 00- - - 400- - - 801 and AMM 10- - - 11- - - 00- - - 400- - - 802).
SERVICE BULLETIN 601R- - -32- - -107 Page 7 of 12 SB 601R- - - 32- - - 107May 11/2010 Revision B, Dec 08/2010 WARNING: MAKE SURE THAT THE WHEEL CHOCKS ARE PUT AT THE MAIN WHEELS. IF YOU DO NOT DO THIS, THE AIRCRAFT CAN MOVE. THIS
CAN CAUSE INJURIES TO PERSONS AND/OR DAMAGE TO EQUIPMENT .
(2) Put the wheel chocks at the main wheels.
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 .
(3) Obey all the hydraulic safety precautions (Refer to AMM 29- - - 00- - - 00- - - 910- - - 801).
(4) Release the hydraulic pressure from hydraulic system No. 2 and No.3 (Refer to AMM 12- - - 00- - - 06- - - 863- - - 802 and AMM 12- - - 00- - - 06- - - 863- - - 804).
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.
(5) Obey all the electrical/electronic safety precautions (Refer to AMM 24- - - 00- - - 00- - - 910- - - 801).
(6) Open, safety, and tag the circuit breakers that follow:
CB PANEL CB NO. NAME ZONE C B P --- 1 A2 HYD PUMP 3B 221 C B P --- 1 A5 HYD PUMP 2 221 C B P --- 1 G11 H Y DS Y S TA CP U M PC O N T3 B 221 C B P --- 1 G14 H Y DS Y S TA CP U M PC O N T2 221 C B P --- 2 A2 HYD PUMP 3A 222 C B P --- 2 G15 H Y DS Y S TA CP U M PC O N T3 A 222
SERVICE BULLETIN 601R- - -32- - -107 Page 8 of 12 SB 601R- - - 32- - - 107May 11/2010 Revision B, Dec 08/2010
(7) Remove the access panel that follows:
ACCESS DESIGNATION 121AL Nose hydraulics compartment
(8) Open forward equipment- - - compartment door 211AL.
Refer to Figure 1.
WARNING: DO NOT DISCONNECT THE NITROGEN LINE AT THIS TIME. THE NITROGEN LINE IS PRESSURIZED. IF YOU DISCONNECT THE
PRESSURIZED NITROGEN LINE, YOU CAN CAUSE INJURIES TO PERSONS AND/OR DAMAGE TO EQUIPMENT .
(9) Release the nitrogen pressure from the inboard and outboard brake accumulators as follows:
NOTE: The nitrogen charge points, with gauges, are installed in the forward equipment compartment above the nose hydraulics compartment. The top gauge/charge point is for the top accumulator and the bottom gauge/charge point is for the bottom accumulator.
(a) Remove the dust cap (3) from the charging valve (1).
(b) Carefully loosen the thin nut on the charging valve (1).
(c) Let the nitrogen pressure go to zero.
SERVICE BULLETIN 601R- - -32- - -107 Page 9 of 12 SB 601R- - - 32- - - 107May 11/2010 Revision B, Dec 08/2010 B. Procedure Refer to Figure 1.
(1) Remove the inboard and outboard brake accumulators (2) (Refer to AMM 32- - - 43- - - 16- - - 000- - - 801).
(2) Install the new inboard and outboard brake accumulators (2) (Refer to AMM 32- - - 43- - - 16- - - 400- - - 801).
C . J o b C l o s e --- O u t
(1) Remove all tools, equipment, and unwanted materials from the work area.
(2) Clean all signs of hydraulic fluid from the inboard and outboard brake accumulators and the adjacent work area.
(3) Remove the tags and close the circuit breakers that follow:
CB PANEL CB NO. NAME ZONE C B P --- 1 A2 HYD PUMP 3B 221 C B P --- 1 A5 HYD PUMP 2 221 C B P --- 1 G11 H Y DS Y S TA CP U M PC O N T3 B 221 C B P --- 1 G14 H Y DS Y S TA CP U M PC O N T2 221 C B P --- 2 A2 HYD PUMP 3A 222 C B P --- 2 G15 H Y DS Y S TA CP U M PC O N T3 A 222
(4) Replenish the reservoirs of hydraulic systems No.2 and No.3 (Refer to AMM 12- - - 12- - - 29- - - 611- - - 803).
(5) Pressurize the inboard and outboard brake accumulators with nitrogen (Refer to AMM 12- - - 12- - - 29- - - 614- - - 802).
(6) Do the bleeding of hydraulic systems No. 2 and No. 3 (Refer to AMM 29- - - 10- - - 00- - - 870- - - 802 and AMM 29- - - 10- - - 00- - - 870- - - 803).
(7) Do the bleeding of the inboard and outboard brakes (Refer to AMM 32- - - 43- - - 00- - - 870- - - 801).
(8) Do the operational test of the inboard and outboard brake accumulators (Refer to AMM 32- - - 43- - - 16- - - 710- - - 801).
(9) Make sure there is no leak in the installation of the inboard and outboard brake accumulators.
SERVICE BULLETIN 601R- - -32- - -107 Page 10 of 12 SB 601R- - - 32- - - 107May 11/2010 Revision B, Dec 08/2010
(10) Install the access panel that follows:
ACCESS DESIGNATION 121AL Nose hydraulics compartment access panel
(11) Close forward equipment- - - compartment access door 211AL.
(12) Make sure the safety lockpins at the nose landing gear and at the main landing gear are removed (Refer AMM 10- - - 11- - - 00- - - 000- - - 801 and AMM 10- - - 11- - - 00- - - 000- - - 802).
(13) When this service bulletin is completed, add the weight and balance data shown in paragraph 1.I. of this service bulletin to the Weight and Balance Manual. Under ‘Description of Change’ enter “Service Bulletin 601R- - - 32- - - 107, Revision B, incorporated.”
(14) When this service bulletin is completed, make this entry in the applicable logbook(s): “Service Bulletin 601R- - - 32- - - 107, Revision B, Landing Gear - - - Brake System - - - Replacement of the Accumulator 601R75138- - - 1 (P/N 08- - - 60163- - - 001 or 08- - - 60163- - - 002) by 601R75139- - - 1 (P/N 11093- - - 4), incorporated.”
SERVICE BULLETIN 601R- - -32- - -107 Page 11 of 12 SB 601R- - - 32- - - 107May 11/2010 Revision B, Dec 08/2010 Removal/Installation - - - Inboard and Outboard Brake Accumulators Figure 1 rsb601r32107_001.cgm
BRAKE ACCUMULATOR
CHARGING POINTS 1 3A B A LEGEND
1. Nitrogen charge valve.
2. Accumulator 601R75138- -1 (08- -60163- -001 or 08- -60163- -002) (Pre- -Mod) 601R75139- -1 (11093- -4) (Post- -Mod).
3. Dust cap.
3 B 2 2 3