Visual Check of the Engine-Pump Case-Drain Filter Contamination (Pop-Out) Indicator

TASK 29-11-43-200-802-A
Visual Check of the Engine-Pump Case-Drain Filter Contamination (Pop-Out) Indicator

WARNING: OBEY THE HYDRAULIC SAFETY PROCEDURES.

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.

ZONE: 435
FIN: 1084GM ** 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 1M (3 FT)-ADJUSTABLE

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
435	FAN AND ACCESSORY GEARBOX
FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
437AL, 438AR

C. Referenced Information

REFERENCE	DESIGNATION
TASK 29-11-43-610-802-A	Servicing of the Engine-Pump Case-Drain Filter
TASK 29-11-51-000-805-A	Removal of the Green Engine Driven Pump
TASK 29-11-51-400-805-A	Installation of the Green Engine-Driven Pump
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
TASK 71-13-00-410-802-A	Closing of the Fan Cowl Doors
Engine-Pump Case-Drain Filter Contamination (Pop-Out) Indicator

3. Job Set-up
Subtask 29-11-43-941-079-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 29-11-43-010-070-A ** ON A/C NOT FOR ALL

B. 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
(2) Put an ACCESS PLATFORM 1M (3 FT)-ADJUSTABLE in position at the engine.

4. Procedure
Subtask 29-11-43-210-053-A ** ON A/C NOT FOR ALL

A. Visual Check of the Engine-Pump Case-Drain Filter Contamination (Pop-Out) Indicator
(1) Do a visual check of the red pop-out indicator button (2) located on the head of the filter assembly (1).
(a) If the red pop-out indicator button (2) is extended, a filter bypass has occurred.

NOTE: A filter bypass can let some contamination past the filter cartridge. This contamination can affect the operation of some components located downstream of the filter.

(2) If there was a filter bypass, replace the filter cartridge (Ref. AMM TASK 29-11-43-610-802).
(a) After replacing the filter cartridge, reset the pop-out indicator button (2) by pressing the red button until it is held in the retracted position.
(b) Do a check for contamination of the removed filter cartridge

If you find metallic particles, replace the engine pump (Ref. AMM TASK 29-11-51-000-805) and (Ref. AMM TASK 29-11-51-400-805).

5. Close-up
Subtask 29-11-43-942-062-A ** ON A/C NOT FOR ALL

A. Safety Precautions
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Remove the WARNING NOTICE(S).

Subtask 29-11-43-410-069-A ** ON A/C NOT FOR ALL

B. 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
(2) Remove the access platform(s).

[Rev.10 from 2021] 2026.04.01 04:08:55 UTC