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

TASK 29-11-43-200-803-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 PARTS AFTER THE ENGINE SHUTDOWN. USE APPLICABLE THERMAL GLOVES. THE ENGINE PARTS CAN STAY HOT FOR ONE HOUR AFTER SHUTDOWN AND CAN BURN YOU.

ZONE: 435
FIN: 1084GM

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
No specific	AR	WARNING NOTICE(S)

B. Work Zones and Access Panels

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

C. Referenced Information

REFERENCE	DESIGNATION
TASK 29-11-43-610-803-A	Servicing of the Engine-Pump Case-Drain Filter
TASK 29-11-51-000-808-A	Removal of the Engine Pump
TASK 29-11-51-400-808-A	Installation of the Engine Pump
TASK 71-13-00-010-803-A	Opening of the Fan Cowl Doors
TASK 71-13-00-410-803-A	Closing of the Fan Cowl Doors
Engine-Pump Case-Drain-Filter Contamination (Pop-Out) Indicator

3. Job Set-up
Subtask 29-11-43-941-080-A

A. Safety Precautions
(1) On the center pedestal, on ENG panel 115VU:

Make sure that the ENG/MODE selector switch is in the NORM position.
Make sure that ENG/MASTER 1(2) control switch was in the OFF position not less than five minutes before you do this procedure.
Put WARNING NOTICE(S) in position to tell persons not to operate the ENG/MODE selector switch and the ENG/MASTER 1(2) control switch.

(2) On the ENG section of maintenance panel 50VU:

Make sure that the ON legend of the FADEC GND PWR/1(2) pushbutton switch is off.
Put a WARNING NOTICE(S) in position to tell persons not to energize FADEC 1(2).

Subtask 29-11-43-010-071-A

B. Get Access
(1) Open the fan cowl doors (Ref. AMM TASK 71-13-00-010-803):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
437AL 438AR
(2) Put an ACCESS PLATFORM 1M (3 FT)-ADJUSTABLE in position at the engine.

4. Procedure
Subtask 29-11-43-210-054-A

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) on the head of the filter assembly (1).
(a) If the red pop-out indicator button (2) is extended, a filter bypass occurred.

NOTE: A filter bypass can cause contamination to go around the filter cartridge. This contamination can cause some components, installed downstream of the filter, to operate incorrectly.

(2) If there was a filter bypass, replace the filter cartridge (Ref. AMM TASK 29-11-43-610-803).
(3) Push the red button until it is in the retracted position to do a reset of the pop-out indicator button (2).
(4) Do a check of the removed filter cartridge for contamination:

If you find metal particles, replace the engine pump (Ref. AMM TASK 29-11-51-000-808) and (Ref. AMM TASK 29-11-51-400-808).

5. Close-up
Subtask 29-11-43-942-063-A

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 29-11-43-410-070-A

B. Close Access
(1) Close the fan cowl doors (Ref. AMM TASK 71-13-00-410-803):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
437AL 438AR
(2) Remove the access platform(s).

[Rev.10 from 2021] 2026.04.01 07:57:37 UTC