W DOC AIRBUS | AMM A320F

Installation of the Pylon TRAS Track Lock Harness [PW11]

TASK 78-31-62-400-803-A
Installation of the Pylon TRAS Track Lock Harness

WARNING: BE CAREFUL WHEN YOU DO WORK ON THE ENGINE AFTER SHUTDOWN. THE ENGINE 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.
ZONE: 210
ZONE: 400
FIN: 4135KS ** ON A/C NOT FOR ALL
1. Reason for the Job
Self explanatory
2. Job Set-up Information
 A. Fixtures, Tools, Test and Support Equipment
REFERENCE
QTY
DESIGNATION
No specific
1
ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE
No specific
1
PLIERS - CONNECTOR, JAW, SOFT
No specific
Torque wrench: range to between 27 and 24 lbf.in (0.31 and 0.27 m.daN ) T
No specific
Torque wrench: range to between 35 and 31.5 lbf.in (0.40 and 0.36 m.daN ) T
No specific
Torque wrench: range to between 93.8 and 72.5 lbf.in (1.06 and 0.82 m.daN ) T
 B. Consumable Materials
REFERENCE
DESIGNATION
(Material No.PU1-0001)
lint-free cotton cloth
(Material No.PU1-0012)
tape
(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
 C. Work Zones and Access Panels
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
FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
447AL, 448AR
 D. Referenced Information
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 78-31-61-400-813-A
Installation of the Pylon TRAS Monitoring Harness
F Pylon TRAS Track Lock Harness
3. Job Set-up
Subtask 78-31-62-941-055-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 78-31-62-865-057-A ** ON A/C NOT FOR ALL
B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
FOR FIN: 4020KM1 (POWER PLANTDEMOUNTABLE, ENG 1)
121VUENG1/REV/LOCK1EG1N44
** ON A/C NOT FOR ALL
121VUENG1/REV/LOCK1EG1R44
** ON A/C NOT FOR ALL
FOR FIN: 4020KM2 (POWER PLANTDEMOUNTABLE, ENG 2)
121VUENG2/REV/LOCK1EG2N45
** ON A/C NOT FOR ALL
121VUENG2/REV/LOCK1EG2R45
Subtask 78-31-62-010-065-A ** ON A/C NOT FOR ALL
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
   (2) Make sure that the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE is in position.
Subtask 78-31-62-040-056-A ** ON A/C NOT FOR ALL
D. Deactivation of the Thrust Reverser System for Maintenance
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).
4. Procedure
WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
Subtask 78-31-62-420-054-A ** ON A/C NOT FOR ALL
A. Installation of the Pylon TRAS Track Lock Harness
   (1) Removal of the protection covers
CAUTION: REMOVE THE PROTECTION COVERS FROM THE OPENINGS AS NECESSARY TO PREVENT ENGINE DAMAGE.
     (a) Make sure that you remove all the necessary COVER - PROTECTION to prevent damage to the engine and adjacent components.
   (2) If necessary, install the frames (4) and (5).
     (a) Mix the PU4-0002epoxy primer, fluid resistant or equivalent (Ref. AMM TASK 70-30-00-918-803), PU4-0004Acuring solution, epoxy primer and the thinner (Material No.PU4-0005) . Refer to the instructions of the manufacturer.
     (b) Clean the bracket faying surface for the frame (4) with a clean lint-free cotton cloth (Material No.PU1-0001) made moist with PU2-0001alcohol, isopropyl. Clean the surface with clean dry lint-free cotton cloth (Material No.PU1-0001) before the PU2-0001alcohol, isopropyl dries.
     (c) Look at the surface of the torque box bracket where you will install the frame (4). 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 PU4-0002epoxy primer, fluid resistant or equivalent (Ref. AMM TASK 70-30-00-918-803) mixture to the surface.
     (d) Attach the frame (4) to the torque box bracket. Use the two bolts (6), the four washers (7) and the two nuts (8). Wet install the bolts (6) and nuts (8) with the PU4-0002epoxy primer, fluid resistant or equivalent (Ref. AMM TASK 70-30-00-918-803) mixture.
       1 TORQUE the nuts (8) to between 27 and 24 lbf.in (0.31 and 0.27 m.daN ) T.
     (e) Clean the bracket faying surface for the frame (5) with a clean lint-free cotton cloth (Material No.PU1-0001) made moist with PU2-0001alcohol, isopropyl. Clean the surface with clean dry lint-free cotton cloth (Material No.PU1-0001) before the PU2-0001alcohol, isopropyl dries.
     (f) Look at the surface of the torque box bracket where you will install the frame (5). 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 PU4-0002epoxy primer, fluid resistant or equivalent (Ref. AMM TASK 70-30-00-918-803) mixture to the surface.
     (g) Attach the frame (5) to the torque box bracket. Use the two bolts (9), the four washers (10) and the two nuts (11). Wet install the bolts (9) and nuts (11) with the PU4-0002epoxy primer, fluid resistant or equivalent (Ref. AMM TASK 70-30-00-918-803) mixture.
       1 TORQUE the nuts (11) to between 27 and 24 lbf.in (0.31 and 0.27 m.daN ) T.
   (3) Install the pylon TRAS track lock harness (1) (4135KS).
     (a) Put the pylon TRAS track lock harness (1) and the pylon TRAS monitoring harness in the insert (2) and frame (4).
     (b) Connect the pylon TRAS track lock harness (1) connector (4050VC-A) to the left TRAS track lock harness.
       1 Turn the connectors finger-tight. Turn the connectors 1/4 turn more with PLIERS - CONNECTOR, JAW, SOFT.
     (c) Connect the pylon TRAS monitoring harness connectors (4053VC-A) and (4052VC-A) to the left TRAS monitoring harness (Ref. AMM TASK 78-31-61-400-813).
     (d) Put the pylon TRAS track lock harness (1) and the pylon TRAS monitoring harness in the insert (3) and frame (5).
     (e) Connect the pylon TRAS track lock harness (1) connector (4051VC-A) to the right TRAS track lock harness.
       1 Turn the connectors finger-tight. Turn the connectors 1/4 turn more with PLIERS - CONNECTOR, JAW, SOFT.
     (f) Connect the pylon TRAS monitoring harness connectors (4055VC-A) and (4054VC-A) to the right TRAS monitoring harness (Ref. AMM TASK 78-31-61-400-813).
     (g) Wind tape (Material No.PU1-0012) or equivalent (Ref. AMM TASK 70-30-00-918-803) around the pylon TRAS track lock harness (1) as necessary to make sure the harness is tight in the two spring clips and two inserts (13).
     (h) Put the pylon TRAS track lock harness (1) in the two spring clips on the rear ramp bracket.
     (i) Put the pylon TRAS track lock harness (1) in the two inserts (13).
     (j) Attach the two inserts (13), the two frames (12) and the pylon TRAS track lock harness (1) to the rear ramp bracket. Use the four bolts (15) and the four washers (14).
NOTE: Do not torque the bolts (15) at this time.
     (k) Put the two clamps (16) on the pylon TRAS track lock harness (1).
     (l) Attach the pylon TRAS track lock harness (1), the two clamps (16) and the two clamps on the pylon TRAS monitoring harness to the pylon brackets. Use the two screws (18) and the two washers (17). Make sure that the clamps (16) are adjacent to the washers (17).
NOTE: Do not torque the screws (18) at this time.
     (m) Connect the pylon TRAS track lock harness (1) connector (752VC-A) to the pylon interface.
       1 Turn the connector finger-tight. Turn the connector 1/4 turn more with PLIERS - CONNECTOR, JAW, SOFT.
     (n) Adjust the pylon TRAS track lock harness (1) to keep the preload to a minimum. Make sure that there are no kinks in the pylon TRAS track lock harness (1).
     (o) Tighten the bolts.
       1 TORQUE the bolts (15) to between 35 and 31.5 lbf.in (0.40 and 0.36 m.daN ) T.
     (p) Tighten the screws.
       1 TORQUE the screws (18) to between 93.8 and 72.5 lbf.in (1.06 and 0.82 m.daN ) T.
     (q) Tighten the bolts on the frames (4) and (5).
       1 Tighten the bolts on the frames (4) and (5) until you fully compress the spring.
5. Close-up
Subtask 78-31-62-440-052-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) Do the reactivation of the thrust reverser system after maintenance (Ref. AMM TASK 78-30-00-440-805).
Subtask 78-31-62-865-058-A ** ON A/C NOT FOR ALL
B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
FOR FIN: 4020KM1 (POWER PLANTDEMOUNTABLE, ENG 1)
121VUENG1/REV/LOCK1EG1N44
** ON A/C NOT FOR ALL
121VUENG1/REV/LOCK1EG1R44
** ON A/C NOT FOR ALL
FOR FIN: 4020KM2 (POWER PLANTDEMOUNTABLE, ENG 2)
121VUENG2/REV/LOCK1EG2N45
** ON A/C NOT FOR ALL
121VUENG2/REV/LOCK1EG2R45
Subtask 78-31-62-410-054-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
Remove the access platform(s).
   (2) Remove the WARNING NOTICE(S).
Subtask 78-31-62-710-052-A ** ON A/C NOT FOR ALL
D. Test
   (1) Do an operational test of thrust reverser with MCDU (Ref. AMM TASK 78-31-00-710-805).
   (2) 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)
[Rev.10 from 2021] 2026.04.01 03:31:47 UTC
"Aviabrain" 2025