Removal of the Pylon Fan Cowl Latch Proximity Sensor Harness [PW11]

TASK 71-13-61-000-802-A
Removal of the Pylon Fan Cowl Latch Proximity Sensor 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.

FIN: 4145KS ** 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	AR	COVER - PROTECTION
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
437AL, 438AR
FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
447AL, 448AR

C. Referenced Information

REFERENCE	DESIGNATION
TASK 71-00-00-860-833-A	Procedure to Prevent Engine Motoring
TASK 71-13-00-010-802-A	Opening of the Fan Cowl Doors
Fan Cowl Latch Proximity Sensor Harness

3. Job Set-up
Subtask 71-13-61-941-052-A ** ON A/C NOT FOR ALL

A. Safety Precautions
(1) Do the procedure to prevent engine motoring
(Ref. AMM TASK 71-00-00-860-833).

Subtask 71-13-61-865-053-A ** ON A/C NOT FOR ALL

B. Open, safety and tag this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
121VU	ENGINE/LATCH DOORS & SLATS/ENG2	93KS2	P40
121VU	ENGINE/LATCH DOORS & SLATS/ENG1	93KS1	P39

Subtask 71-13-61-010-052-A ** ON A/C NOT FOR ALL

C. Get Access
(1) Open the fan cowl doors (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) Put an ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position.

4. Procedure
Subtask 71-13-61-020-051-A ** ON A/C NOT FOR ALL

A. Removal of the Pylon Fan Cowl Latch Proximity Sensor Harness
(1) Remove the pylon fan cowl latch proximity sensor harness (1) (4145KS).
(a) Disconnect the pylon fan cowl latch proximity sensor harness (1) (443VC-A) from the pylon interface.
(b) Disconnect the pylon fan cowl latch proximity sensor harness (1) (4056VC-A) from the fan cowl proximity sensor harness.
(c) Loosen the bolt on the clamp (2).
(d) Turn the nut on the clamp (2) 1/4 of a turn and open the clamp (2).
(e) Remove the pylon fan cowl latch proximity sensor harness (1) from the pylon.
(2) If necessary, remove the clamp (2).
(a) Remove the two bolts (3) and the two washers (4) that attach the clamp (2) to the TRAS harness disconnect bracket.
(b) Remove the clamp (2) from the TRAS harness disconnect bracket.
(3) Installation of the protection covers

CAUTION: INSTALL PROTECTION COVERS ON ALL THE OPENINGS IMMEDIATELY TO PREVENT DAMAGE TO THE ENGINE.

(a) Make sure that you install COVER - PROTECTION as necessary to prevent damage to the engine.

[Rev.10 from 2021] 2026.04.01 02:32:53 UTC