DOC AIRBUS | AMM A320FInstallation of the Right TRAS Monitoring Harness [PW11]
TASK 78-31-61-400-812-A
Installation of the Right TRAS Monitoring Harness
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Consumable Materials
C. Work Zones and Access Panels
D. Referenced Information
3. Job Set-up
Subtask 78-31-61-941-075-A ** ON A/C NOT FOR ALL
Subtask 78-31-61-410-071-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.01 03:31:38 UTC
Installation of the Right TRAS Monitoring Harness
WARNING:
BE CAREFUL WHEN YOU DO WORK ON THE ENGINE AND THE ADJACENT COMPONENTS AFTER ENGINE SHUTDOWN. THE ENGINE, THE ENGINE OIL AND THE ADJACENT COMPONENTS CAN STAY HOT FOR A LONG TIME. IF YOU DO NOT OBEY THIS INSTRUCTION, INJURY CAN OCCUR.
WARNING:
WEAR APPLICABLE PERSONAL PROTECTIVE EQUIPMENT (PPE) WHEN YOU DO THIS TASK. BEFORE YOU USE PPE, READ, UNDERSTAND AND OBEY ALL INSTRUCTIONS FOR ITS USE. THESE INSTRUCTIONS INCLUDE INSTRUCTIONS FROM THE MANUFACTURER, YOUR EMPLOYER AND GOVERNMENT REGULATIONS. YOU CAN GET INJURED IF YOU DO NOT USE PPE. GET INSTRUCTIONS FROM YOUR EMPLOYER ON WHICH PPE IS NECESSARY.
WARNING:
BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
1. Reason for the JobSelf explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Consumable Materials
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.PU1-0001) | lint-free cotton cloth |
| (Material No.PU2-0001) | alcohol, isopropyl |
| (Material No.PU4-0002) | epoxy primer, fluid resistant |
| (Material No.PU4-0004A) | curing solution, epoxy primer |
| (Material No.PU4-0005) | thinner |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 210 | CKPT,FWD COMPT BHD TO FLT COMPT BULKHEAD |
| 400 | POWER PLANT, NACELLES AND PYLONS |
| FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1) | |
| 437AL, 438AR, 452AR | |
| FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2) | |
| 447AL, 448AR, 462AR | |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 70-30-00-918-803-A | Consumable Materials Index for the Nacelle (UTC Aerospace Systems) |
| TASK 71-00-00-860-832-A | Procedure to Prevent Engine Motoring and to Stop the Electrical Supply to the EEC |
| TASK 71-13-00-010-802-A | Opening of the Fan Cowl Doors |
| TASK 71-13-00-410-802-A | Closing of the Fan Cowl Doors |
| TASK 73-25-34-400-802-A | Installation of the Engine Interface Unit (EIU) |
| TASK 78-30-00-040-805-A | Deactivation of the Thrust Reverser System for Ground Maintenance |
| TASK 78-30-00-440-805-A | Reactivation of the Thrust Reverser System after Ground Maintenance |
| TASK 78-31-00-710-805-A | Operational Test of Thrust Reverser with MCDU |
| TASK 78-31-00-710-805-A-01 | Thrust Reverser Cycling Test (Engine Running) |
| TASK 78-32-38-400-801-A | Installation of the Track Lock Cover |
| TASK 78-32-71-400-802-A | Installation of the Right Thrust Reverser Thermal Insulation Blankets |
| TASK 78-36-00-010-802-A | Opening of the Thrust Reverser Cowl-Doors |
| TASK 78-36-00-410-802-A | Closing of the Thrust Reverser Cowl-Doors |
Right TRAS Monitoring HarnessSubtask 78-31-61-941-075-A ** ON A/C NOT FOR ALL
A. Safety Precautions
(1) Make sure that you did the procedure to prevent engine motoring and to stop the electrical supply to the Electronic Engine Control (EEC)
(Ref. AMM TASK 71-00-00-860-832)
Subtask 78-31-61-865-059-A ** ON A/C NOT FOR ALL (1) Make sure that you did the procedure to prevent engine motoring and to stop the electrical supply to the Electronic Engine Control (EEC)
(Ref. AMM TASK 71-00-00-860-832)
B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:
Subtask 78-31-61-010-096-A ** ON A/C NOT FOR ALL | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| FOR FIN: 4020KM1 (POWER PLANTDEMOUNTABLE, ENG 1) | |||
| 121VU | ENG1/REV/LOCK | 1EG1 | N44 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | ENG1/REV/LOCK | 1EG1 | R44 |
| ** ON A/C NOT FOR ALL | |||
| FOR FIN: 4020KM2 (POWER PLANTDEMOUNTABLE, ENG 2) | |||
| 121VU | ENG2/REV/LOCK | 1EG2 | N45 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | ENG2/REV/LOCK | 1EG2 | R45 |
C. Get Access
(1) Make sure that the fan cowl doors are open (Ref. AMM TASK 71-13-00-010-802):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
437AL, 438AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
447AL, 448AR
Subtask 78-31-61-040-073-A ** ON A/C NOT FOR ALL (1) Make sure that the fan cowl doors are open (Ref. AMM TASK 71-13-00-010-802):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
437AL, 438AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
447AL, 448AR
D. Deactivation of the Thrust Reverser System for Maintenance
Subtask 78-31-61-010-097-A ** ON A/C NOT FOR ALL WARNING:
YOU MUST DEACTIVATE THE THRUST REVERSER BEFORE YOU DO WORK ON OR AROUND IT. IF YOU DO NOT, THE THRUST REVERSER CAN OPERATE ACCIDENTALLY AND CAUSE AN INJURY AND/OR DAMAGE.
(1) Make sure that you did the deactivation of the thrust reverser system for maintenance (Ref. AMM TASK 78-30-00-040-805). E. Get Access
(1) Make sure that the right thrust-reverser cowl-door is open (Ref. AMM TASK 78-36-00-010-802):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
452AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
462AR
(2) Make sure that the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE is in position.
4. Procedure(1) Make sure that the right thrust-reverser cowl-door is open (Ref. AMM TASK 78-36-00-010-802):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
452AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
462AR
(2) Make sure that the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE is in position.
CAUTION:
WIPE CLEAN ALL PARTS AND TOOLS AS NECESSARY TO REMOVE UNWANTED DEBRIS AND PREVENT DAMAGE TO THE ENGINE.
Subtask 78-31-61-420-060-A ** ON A/C NOT FOR ALL A. Installation of the Right TRAS Monitoring Harness (1)
(1) Mix thePU4-0002 epoxy primer, fluid resistant PU4-0004A curing solution, epoxy primer
(2) Attach the right TRAS monitoring harness (1) (4054VC) and (4055VC) connectors to the torque box disconnect panel. Use the eight screws (2) and the eight washers (3). Wet install the screws (2) with thePU4-0002 epoxy primer, fluid resistant
(a) Tighten the eight screws (2) with your hand. Then tighten the screws (2) 1/8 to 1/4 of a turn more.
(3) Connection of the pylon harness:
(b) Tighten the connectors finger-tight. Tighten the connectors 1/4 of a turn more with PLIERS - CONNECTOR, JAW, SOFT.
(4) Connection of the right TRAS harness:
(b) Tighten the connectors finger-tight. Tighten the connectors 1/4 of a turn more with PLIERS - CONNECTOR, JAW, SOFT.
(5) Attach the two brackets (7) and (8) to the feedback locking actuator. Use the two bolts (4) and the two washers (5). Wet install the bolts (4) with thePU4-0002 epoxy primer, fluid resistant
(a) TORQUE the two bolts (4) to between 35 and 31.5 lbf.in (0.40 and 0.36 m.daN )
.
(6) Put the three clamps (6) on the right TRAS monitoring harness (1).
(7) Attach the right TRAS monitoring harness (1) and the three clamps (6) on the two brackets (7) and (8). Use the three bolts (4) and the three washers (5). Wet install the bolts (4) with primer mixture.
(9) Remove the bolt (9) and washer (10) and the right track lock harness clamp.
(10) Clean the faying surface with a clean lint-free cotton cloth (Material No.PU1-0001) moistened withPU2-0001 alcohol, isopropyl PU2-0001 alcohol, isopropyl PU2-0001 alcohol, isopropyl
(11) Look at the surface of the torque box where you will install the clamp (11). Make sure the surface has a layer of paint and you can see no bare metal. If part of the surface is without paint, apply a layer of thePU4-0002 epoxy primer, fluid resistant
(12) Attach the right TRAS monitoring harness (1), the clamp (11), the right track lock harness clamp and the right track lock harness to the torque box. Use the bolt (9) and washer (10). Put the right track lock harness clamp on top of the clamp (11). Wet install the bolt (9) with thePU4-0002 epoxy primer, fluid resistant
(14) Clean the faying surface with a clean lint-free cotton cloth (Material No.PU1-0001) moistened withPU2-0001 alcohol, isopropyl PU2-0001 alcohol, isopropyl PU2-0001 alcohol, isopropyl
(15) Look at the surface of the torque box where you will install the clamp (12). Make sure the surface has a layer of paint and you can see no bare metal. If part of the surface is without paint, apply a layer of thePU4-0002 epoxy primer, fluid resistant
(16) Attach the right TRAS monitoring harness (1) and the clamp (12) to the torque box. Use the bolt (14) and washer (13). Wet install the bolt (14) with thePU4-0002 epoxy primer, fluid resistant
(18) Remove the two bolts (17), the two washers (16) and the two right track lock harness clamps.
(19) Clean the faying surface with a clean lint-free cotton cloth (Material No.PU1-0001) moistened withPU2-0001 alcohol, isopropyl PU2-0001 alcohol, isopropyl PU2-0001 alcohol, isopropyl
(20) Look at the surfaces of the torque box where you will install the two clamps (15). Make sure the surfaces have a layer of paint and you can see no bare metal. If part of the surface is without paint, apply a layer of thePU4-0002 epoxy primer, fluid resistant
(21) Attach the right TRAS monitoring harness (1), the two clamps (15), the two right track lock harness clamps and the right track lock harness to the torque box. Use the two bolts (17) and the two washers (16). Put the two right track lock harness clamps on top of the two clamps (15). Wet install the bolts (17) with thePU4-0002 epoxy primer, fluid resistant
(23) Remove the five bolts (18), the five washers (19) and the five right track lock harness clamps.
(24) Attach the right TRAS monitoring harness (1), the five clamps (20), the five right track lock harness clamps and the right track lock harness to the torque box. Use the five bolts (18) and the five washers (19). Put the five right track lock harness clamps on top of the five clamps (20). Wet install the bolts (18) with thePU4-0002 epoxy primer, fluid resistant
(26) Remove the four nuts (21) and the four washers (22) from the four right track lock harness clamps and the right track lock harness.
(27) Attach the right TRAS monitoring harness (1), the four clamps (23), the four right track lock harness clamps and the right track lock harness on the torque box. Use the four nuts (21) and the four washers (22). Put the four right track lock harness clamps (23) on top of the four right track lock harness clamps. Wet install the nuts (21) with thePU4-0002 epoxy primer, fluid resistant
(29) Remove the bolt (24), washer (25) and the right track lock harness clamp.
(30) Attach the right TRAS monitoring harness (1), the clamp (26), the right track lock harness clamp and the right track lock harness to the torque box. Use the bolt (24) and washer (25). Put the right track lock harness clamp on top of the clamp (26). Wet install the bolt (24) with thePU4-0002 epoxy primer, fluid resistant
(32) Remove the bolt (27), washer (28) and the right track lock harness clamp.
(33) Clean the faying surface with a clean lint-free cotton cloth (Material No.PU1-0001) moistened withPU2-0001 alcohol, isopropyl PU2-0001 alcohol, isopropyl PU2-0001 alcohol, isopropyl
(34) Look at the surface of the torque box where you will install the right track lock harness clamp below the clamp (29). Make sure the surface has a layer of paint and you can see no bare metal. If part of the surface is without paint, apply a layer of thePU4-0002 epoxy primer, fluid resistant
(35) Attach the right TRAS monitoring harness (1), the clamp (29), the right track lock harness clamp and the right track lock harness to the torque box. Use the bolt (27) and washer (28). Put the clamp (29) on top of the right track lock harness clamp. Wet install the bolt (27) with thePU4-0002 epoxy primer, fluid resistant
(b) Tighten the connectors finger-tight. Tighten the connectors 1/4 of a turn more with PLIERS - CONNECTOR, JAW, SOFT.
(37) Put the clamp (32) on the right TRAS monitoring harness (1).
(38) Remove the bolt (30), washer (31) and the right track lock harness clamp.
(39) Clean the faying surface with a clean lint-free cotton cloth (Material No.PU1-0001) moistened withPU2-0001 alcohol, isopropyl PU2-0001 alcohol, isopropyl PU2-0001 alcohol, isopropyl
(40) Look at the surface of the torque box where you will install the clamp (32). Make sure the surface has a layer of paint and you can see no bare metal. If part of the surface is without paint, apply a layer of thePU4-0002 epoxy primer, fluid resistant
(41) Attach the right TRAS monitoring harness (1), the clamp (32), the right track lock harness clamp and the right track lock harness to the torque box. Use the bolt (30) and washer (31). Put the right track lock harness clamp on top of the clamp (32). Wet install the bolt (30) with thePU4-0002 epoxy primer, fluid resistant
(43) Clean the faying surface with a clean lint-free cotton cloth (Material No.PU1-0001) moistened withPU2-0001 alcohol, isopropyl PU2-0001 alcohol, isopropyl PU2-0001 alcohol, isopropyl
(44) Look at the surface of the torque box where you install the clamp (33). Make sure the surface has a layer of paint and you can see no bare metal. If part of the surface is without paint, apply a layer of thePU4-0002 epoxy primer, fluid resistant
(45) Attach the right TRAS monitoring harness (1) and the clamp (33) to the torque box. Use the bolt (35) and washer (34). Wet install the bolt (35) with thePU4-0002 epoxy primer, fluid resistant
(47) Remove the bolt (38), washer (37) and the right track lock harness clamp.
(48) Attach the right TRAS monitoring harness (1), the clamp (36), the right track lock harness clamp, and the right track lock harness to the torque box. Use the bolt (38) and washer (37). Put the clamp (36) on top of the right track lock harness clamp. Wet install the bolt (38) with thePU4-0002 epoxy primer, fluid resistant
(50) Clean the faying surface with a clean lint-free cotton cloth (Material No.PU1-0001) moistened withPU2-0001 alcohol, isopropyl PU2-0001 alcohol, isopropyl PU2-0001 alcohol, isopropyl
(50) Look at the surfaces of the torque box where you will install the clamps (41). Make sure the surfaces have a layer of paint and you can see no bare metal. If part of the surface is without paint, apply a layer of thePU4-0002 epoxy primer, fluid resistant
(51) Attach the right TRAS monitoring harness (1) and the two clamps (41) on the latch beam. Use the two bolts (39) and the two washers (40). Wet install the bolts (39) with thePU4-0002 epoxy primer, fluid resistant
(53) Connection of the right TRAS monitoring harness:
(b) Tighten the connectors finger-tight. Tighten the connectors 1/4 of a turn more with PLIERS - CONNECTOR, JAW, SOFT.
(54) Put the three grommets (42) and the two grommets (43) on the right TRAS monitoring harness (1).
(55) Attach the right TRAS monitoring harness (1) to the bulkheads of the latch beam with the three grommets (42) and the two grommets (43).
(56) Put the right TRAS monitoring harness (1) in the two spring clips.
(57) Adjust the right TRAS monitoring harness (1) to keep the preload to a minimum. Make sure that there are no kinks in the right TRAS monitoring harness (1).
(58) Tighten the nuts and bolts.
(a) TORQUE the bolts (4), (9), (14), (17), (18), (24), (27), (30), (35), (38) and (39) to between 35 and 31.5 lbf.in (0.40 and 0.36 m.daN ).
(b) TORQUE the nuts (21) to between 27 and 24 lbf.in (0.31 and 0.27 m.daN ).
(59) Install the track lock cover (Ref. AMM TASK 78-32-38-400-801).
Subtask 78-31-61-420-063-A ** ON A/C NOT FOR ALL (1) Mix the
(2) Attach the right TRAS monitoring harness (1) (4054VC) and (4055VC) connectors to the torque box disconnect panel. Use the eight screws (2) and the eight washers (3). Wet install the screws (2) with the
(a) Tighten the eight screws (2) with your hand. Then tighten the screws (2) 1/8 to 1/4 of a turn more.
(3) Connection of the pylon harness:
CAUTION:
MAKE SURE THAT THE ELECTRICAL CONNECTOR AND RECEPTACLE ARE CLEAN WHEN YOU CONNECT THEM. DIRTY CONNECTORS CAN CAUSE DAMAGE TO EQUIPMENT.
CAUTION:
USE TEFLON-JAWED PLIERS TO LOOSEN/TIGHTEN ELECTRICAL CONNECTORS. DO NOT USE METAL-JAWED PLIERS. IF YOU DO NOT OBEY THIS INSTRUCTION, DAMAGE TO THE ELECTRICAL CONNECTORS CAN OCCUR.
(a) Connect the pylon harness (4054VC-A) and (4055VC-A) connectors to the right TRAS monitoring harness (1). (b) Tighten the connectors finger-tight. Tighten the connectors 1/4 of a turn more with PLIERS - CONNECTOR, JAW, SOFT.
(4) Connection of the right TRAS harness:
CAUTION:
MAKE SURE THAT THE ELECTRICAL CONNECTOR AND RECEPTACLE ARE CLEAN WHEN YOU CONNECT THEM. DIRTY CONNECTORS CAN CAUSE DAMAGE TO EQUIPMENT.
CAUTION:
USE TEFLON-JAWED PLIERS TO LOOSEN/TIGHTEN ELECTRICAL CONNECTORS. DO NOT USE METAL-JAWED PLIERS. IF YOU DO NOT OBEY THIS INSTRUCTION, DAMAGE TO THE ELECTRICAL CONNECTORS CAN OCCUR.
(a) Connect the right TRAS harness (1) (4004KS-A), (4033KS-A) and (4041KS-A) connectors to the feedback locking actuator. (b) Tighten the connectors finger-tight. Tighten the connectors 1/4 of a turn more with PLIERS - CONNECTOR, JAW, SOFT.
(5) Attach the two brackets (7) and (8) to the feedback locking actuator. Use the two bolts (4) and the two washers (5). Wet install the bolts (4) with the
(a) TORQUE the two bolts (4) to between 35 and 31.5 lbf.in (0.40 and 0.36 m.daN )
. (6) Put the three clamps (6) on the right TRAS monitoring harness (1).
(7) Attach the right TRAS monitoring harness (1) and the three clamps (6) on the two brackets (7) and (8). Use the three bolts (4) and the three washers (5). Wet install the bolts (4) with primer mixture.
NOTE: Do not torque the three bolts (4) at this time.
(8) Put the clamp (11) on the right TRAS monitoring harness (1). (9) Remove the bolt (9) and washer (10) and the right track lock harness clamp.
(10) Clean the faying surface with a clean lint-free cotton cloth (Material No.PU1-0001) moistened with
(11) Look at the surface of the torque box where you will install the clamp (11). Make sure the surface has a layer of paint and you can see no bare metal. If part of the surface is without paint, apply a layer of the
(12) Attach the right TRAS monitoring harness (1), the clamp (11), the right track lock harness clamp and the right track lock harness to the torque box. Use the bolt (9) and washer (10). Put the right track lock harness clamp on top of the clamp (11). Wet install the bolt (9) with the
NOTE: Do not torque the bolt (9) at this time.
(13) Put the clamp (12) on the right TRAS monitoring harness (1). (14) Clean the faying surface with a clean lint-free cotton cloth (Material No.PU1-0001) moistened with
(15) Look at the surface of the torque box where you will install the clamp (12). Make sure the surface has a layer of paint and you can see no bare metal. If part of the surface is without paint, apply a layer of the
(16) Attach the right TRAS monitoring harness (1) and the clamp (12) to the torque box. Use the bolt (14) and washer (13). Wet install the bolt (14) with the
NOTE: Do not torque the bolt (14) at this time.
(17) Put the two clamps (15) on the right TRAS monitoring harness (1). (18) Remove the two bolts (17), the two washers (16) and the two right track lock harness clamps.
(19) Clean the faying surface with a clean lint-free cotton cloth (Material No.PU1-0001) moistened with
(20) Look at the surfaces of the torque box where you will install the two clamps (15). Make sure the surfaces have a layer of paint and you can see no bare metal. If part of the surface is without paint, apply a layer of the
(21) Attach the right TRAS monitoring harness (1), the two clamps (15), the two right track lock harness clamps and the right track lock harness to the torque box. Use the two bolts (17) and the two washers (16). Put the two right track lock harness clamps on top of the two clamps (15). Wet install the bolts (17) with the
NOTE: Do not torque the bolts (17) at this time.
(22) Put the five clamps (20) on the right TRAS monitoring harness (1). (23) Remove the five bolts (18), the five washers (19) and the five right track lock harness clamps.
(24) Attach the right TRAS monitoring harness (1), the five clamps (20), the five right track lock harness clamps and the right track lock harness to the torque box. Use the five bolts (18) and the five washers (19). Put the five right track lock harness clamps on top of the five clamps (20). Wet install the bolts (18) with the
NOTE: Do not torque the bolts (18) at this time.
(25) Put the four clamps (23) on the right TRAS monitoring harness (1). (26) Remove the four nuts (21) and the four washers (22) from the four right track lock harness clamps and the right track lock harness.
(27) Attach the right TRAS monitoring harness (1), the four clamps (23), the four right track lock harness clamps and the right track lock harness on the torque box. Use the four nuts (21) and the four washers (22). Put the four right track lock harness clamps (23) on top of the four right track lock harness clamps. Wet install the nuts (21) with the
NOTE: Do not torque the nuts (21) at this time.
(28) Put the clamp (26) on the right TRAS monitoring harness (1). (29) Remove the bolt (24), washer (25) and the right track lock harness clamp.
(30) Attach the right TRAS monitoring harness (1), the clamp (26), the right track lock harness clamp and the right track lock harness to the torque box. Use the bolt (24) and washer (25). Put the right track lock harness clamp on top of the clamp (26). Wet install the bolt (24) with the
NOTE: Do not torque the bolt (24) at this time.
(31) Put the clamp (29) on the right TRAS monitoring harness (1). (32) Remove the bolt (27), washer (28) and the right track lock harness clamp.
(33) Clean the faying surface with a clean lint-free cotton cloth (Material No.PU1-0001) moistened with
(34) Look at the surface of the torque box where you will install the right track lock harness clamp below the clamp (29). Make sure the surface has a layer of paint and you can see no bare metal. If part of the surface is without paint, apply a layer of the
(35) Attach the right TRAS monitoring harness (1), the clamp (29), the right track lock harness clamp and the right track lock harness to the torque box. Use the bolt (27) and washer (28). Put the clamp (29) on top of the right track lock harness clamp. Wet install the bolt (27) with the
NOTE: Do not torque the bolt (27) at this time.
(36) Connection of the right TRAS monitoring harness: CAUTION:
MAKE SURE THAT THE ELECTRICAL CONNECTOR AND RECEPTACLE ARE CLEAN WHEN YOU CONNECT THEM. DIRTY CONNECTORS CAN CAUSE DAMAGE TO EQUIPMENT.
CAUTION:
USE TEFLON-JAWED PLIERS TO LOOSEN/TIGHTEN ELECTRICAL CONNECTORS. DO NOT USE METAL-JAWED PLIERS. IF YOU DO NOT OBEY THIS INSTRUCTION, DAMAGE TO THE ELECTRICAL CONNECTORS CAN OCCUR.
(a) Connect the right TRAS monitoring harness (1) (4043KS-A) and (4035KS-A) connectors to the locking actuator. (b) Tighten the connectors finger-tight. Tighten the connectors 1/4 of a turn more with PLIERS - CONNECTOR, JAW, SOFT.
(37) Put the clamp (32) on the right TRAS monitoring harness (1).
(38) Remove the bolt (30), washer (31) and the right track lock harness clamp.
(39) Clean the faying surface with a clean lint-free cotton cloth (Material No.PU1-0001) moistened with
(40) Look at the surface of the torque box where you will install the clamp (32). Make sure the surface has a layer of paint and you can see no bare metal. If part of the surface is without paint, apply a layer of the
(41) Attach the right TRAS monitoring harness (1), the clamp (32), the right track lock harness clamp and the right track lock harness to the torque box. Use the bolt (30) and washer (31). Put the right track lock harness clamp on top of the clamp (32). Wet install the bolt (30) with the
NOTE: Do not torque the bolt (30) at this time.
(42) Put the clamp (33) on the right TRAS monitoring harness (1). (43) Clean the faying surface with a clean lint-free cotton cloth (Material No.PU1-0001) moistened with
(44) Look at the surface of the torque box where you install the clamp (33). Make sure the surface has a layer of paint and you can see no bare metal. If part of the surface is without paint, apply a layer of the
(45) Attach the right TRAS monitoring harness (1) and the clamp (33) to the torque box. Use the bolt (35) and washer (34). Wet install the bolt (35) with the
NOTE: Do not torque the bolt (35) at this time.
(46) Put the clamp (36) on the right TRAS monitoring harness (1). (47) Remove the bolt (38), washer (37) and the right track lock harness clamp.
(48) Attach the right TRAS monitoring harness (1), the clamp (36), the right track lock harness clamp, and the right track lock harness to the torque box. Use the bolt (38) and washer (37). Put the clamp (36) on top of the right track lock harness clamp. Wet install the bolt (38) with the
NOTE: Do not torque the bolt (38) at this time.
(49) Put the two clamps (41) on the right TRAS monitoring harness (1). (50) Clean the faying surface with a clean lint-free cotton cloth (Material No.PU1-0001) moistened with
(50) Look at the surfaces of the torque box where you will install the clamps (41). Make sure the surfaces have a layer of paint and you can see no bare metal. If part of the surface is without paint, apply a layer of the
(51) Attach the right TRAS monitoring harness (1) and the two clamps (41) on the latch beam. Use the two bolts (39) and the two washers (40). Wet install the bolts (39) with the
NOTE: Do not torque the bolts (39) at this time.
(52) Put the right TRAS monitoring harness (1) through the bulkheads of the latch beam. (53) Connection of the right TRAS monitoring harness:
CAUTION:
MAKE SURE THAT THE ELECTRICAL CONNECTOR AND RECEPTACLE ARE CLEAN WHEN YOU CONNECT THEM. DIRTY CONNECTORS CAN CAUSE DAMAGE TO EQUIPMENT.
CAUTION:
USE TEFLON-JAWED PLIERS TO LOOSEN/TIGHTEN ELECTRICAL CONNECTORS. DO NOT USE METAL-JAWED PLIERS. IF YOU DO NOT OBEY THIS INSTRUCTION, DAMAGE TO THE ELECTRICAL CONNECTORS CAN OCCUR.
(a) Connect the right TRAS monitoring harness (1) (4039KS-A) and (4047KS-A) connectors to the track lock. (b) Tighten the connectors finger-tight. Tighten the connectors 1/4 of a turn more with PLIERS - CONNECTOR, JAW, SOFT.
(54) Put the three grommets (42) and the two grommets (43) on the right TRAS monitoring harness (1).
(55) Attach the right TRAS monitoring harness (1) to the bulkheads of the latch beam with the three grommets (42) and the two grommets (43).
(56) Put the right TRAS monitoring harness (1) in the two spring clips.
(57) Adjust the right TRAS monitoring harness (1) to keep the preload to a minimum. Make sure that there are no kinks in the right TRAS monitoring harness (1).
(58) Tighten the nuts and bolts.
(a) TORQUE the bolts (4), (9), (14), (17), (18), (24), (27), (30), (35), (38) and (39) to between 35 and 31.5 lbf.in (0.40 and 0.36 m.daN )
. (b) TORQUE the nuts (21) to between 27 and 24 lbf.in (0.31 and 0.27 m.daN )
. (59) Install the track lock cover (Ref. AMM TASK 78-32-38-400-801).
B. Installation of the Insulation Blankets
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the right aft latch beam blanket and the right forward latch beam blanket on the inner fixed structure of the thrust reverser (Ref. AMM TASK 78-32-71-400-802).
5. Close-up(1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the right aft latch beam blanket and the right forward latch beam blanket on the inner fixed structure of the thrust reverser (Ref. AMM TASK 78-32-71-400-802).
Subtask 78-31-61-410-071-A ** ON A/C NOT FOR ALL
A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the right thrust reverser cowl-door (Ref. AMM TASK 78-36-00-410-802):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
452AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
462AR
Subtask 78-31-61-440-061-A ** ON A/C NOT FOR ALL (1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the right thrust reverser cowl-door (Ref. AMM TASK 78-36-00-410-802):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
452AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
462AR
B. Do the reactivation of the thrust reverser system after maintenance (Ref. AMM TASK 78-30-00-440-805).
Subtask 78-31-61-410-072-A ** ON A/C NOT FOR ALL C. Close Access
(1) Close the fan cowl doors (Ref. AMM TASK 71-13-00-410-802):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
437AL 438AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
447AL 448AR
(2) Remove the access platform(s).
(3) Remove the WARNING NOTICE(S).
(4) Make sure that all the circuit breakers shown in the paragraph Procedure of the engine interface unit installation are closed. If they are not, close them in the recommended sequence
(Ref. AMM TASK 73-25-34-400-802)
Subtask 78-31-61-710-051-A ** ON A/C NOT FOR ALL (1) Close the fan cowl doors (Ref. AMM TASK 71-13-00-410-802):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
437AL 438AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
447AL 448AR
(2) Remove the access platform(s).
(3) Remove the WARNING NOTICE(S).
(4) Make sure that all the circuit breakers shown in the paragraph Procedure of the engine interface unit installation are closed. If they are not, close them in the recommended sequence
(Ref. AMM TASK 73-25-34-400-802)
D. Test
(1) Do the operational test of the thrust reverser with the MCDU (Ref. AMM TASK 78-31-00-710-805).
(1) Do the operational test of the thrust reverser with the MCDU (Ref. AMM TASK 78-31-00-710-805).