Removal of the Pressure Oil Filter Element [IAE]

TASK 79-21-44-000-010-A
Removal of the Pressure Oil Filter Element

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.

CAUTION: DO NOT PUT OIL THAT HAS BEEN DRAINED FROM THE ENGINE BACK IN TO THE OIL SYSTEM.

CAUTION: DO NOT LET ENGINE OIL FALL ON THE ENGINE. UNWANTED OIL MUST BE REMOVED IMMEDIATELY WITH A CLEAN LINT FREE CLOTH THE OIL CAN CAUSE DAMAGE TO THE SURFACE PROTECTION AND TO SOME PARTS.

ZONE: 400
FIN: 6005EM ** 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	AR	CONTAINER 10 L(2 1/2 USGAL)
No specific	AR	COVER - PROTECTION
No specific	AR	WARNING NOTICE(S)

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
400	POWER PLANT, NACELLES AND PYLONS
FOR [1000EM1] (ENGINE-1)
437AL, 438AR
FOR [1000EM2] (ENGINE-2)
447AL, 448AR

C. Referenced Information

REFERENCE	DESIGNATION
TASK 71-13-00-010-010-A	Opening of the Fan Cowls 437AL(447AL),438AR(448AR)
Pressure Oil Filter Element

3. Job Set-up
Subtask 79-21-44-941-050-A ** ON A/C NOT FOR ALL

A. Safety Precautions
(1) On the center pedestal, on the ENG panel 115VU:
(a) Put a WARNING NOTICE(S) to tell persons not to start the engine.
(2) Make sure that the engine 1(2) shutdown occurred not less than 5 minutes before you do this procedure.
(3) On the overhead maintenance panel 50VU:
(a) Make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off.
(b) Put a WARNING NOTICE(S) to tell persons not to energize the FADEC 1(2).

Subtask 79-21-44-010-050-A ** ON A/C NOT FOR ALL

B. Get Access
(1) Open the fan cowls (Ref. AMM TASK 71-13-00-010-010):
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR.
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR.

4. Procedure
Subtask 79-21-44-680-050-A ** ON A/C NOT FOR ALL

A. Drain the filter casing

WARNING: USE PROTECTIVE GOGGLES AND GLOVES WHEN YOU REMOVE OR INSTALL LOCKWIRE. EACH TIME YOU CUT LOCKWIRE, REMOVE AND DISCARD IT IMMEDIATELY. LOOSE LOCKWIRE CAN CUT YOU OR MAKE YOU BLIND, AND/OR CAN CAUSE DAMAGE.

(1) Cut and discard the lockwire.

PRE SBE 79-0101
(2) Remove the nut (4) and priming valve (10) from the cover (5).

END OF PRE SBE 79-0101

POST SBE 79-0101
(3) Remove the plug (9) and packing (8).

(4) Discard the packing (8).

END OF POST SBE 79-0101
(5) Drain the oil into the CONTAINER 10 L(2 1/2 USGAL).

Subtask 79-21-44-020-050-A ** ON A/C NOT FOR ALL

B. Remove the filter cover
(1) Remove the six nuts (3) and the six washers (2).
(2) Remove the cover (5).
(3) Discard the packing (6).
(4) Remove the oil filter element (7).
(5) Install COVER - PROTECTION to all exposed openings.

[Rev.10 from 2021] 2026.04.01 13:00:39 UTC