Removal of the Scavenge Oil Filter Assembly [IAE]

TASK 79-22-43-000-010-A
Removal of the Scavenge Oil Filter Assembly

WARNING: DO NOT LET ENGINE OIL STAY ON YOUR SKIN FOR A LONG TIME. FLUSH THE OIL FROM YOUR SKIN WITH WATER. THE OIL IS POISONOUS AND CAN GO THROUGH YOUR SKIN AND INTO YOUR BODY.

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: 400
FIN: 1000EM1 ** ON A/C NOT FOR ALL
FIN: 1000EM2 ** 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	CAP - BLANKING
No specific	AR	CONTAINER 10 L(2 1/2 USGAL)
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 12-13-79-610-010-A	Drain the Engine Oil System
TASK 71-13-00-010-010-A	Opening of the Fan Cowls 437AL(447AL),438AR(448AR)
TASK 79-22-44-000-010-A	Removal of the Scavenge Oil Filter Element
TASK 79-22-45-000-010-A	Removal of the Magnetic Chip Detector
TASK 79-32-16-000-010-A	Removal of the Scavenge Oil Temperature Thermocouple
Scavenge Oil Filter Housing Assembly

3. Job Set-up
Subtask 79-22-43-941-050-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 79-22-43-010-050-A ** ON A/C NOT FOR ALL

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

4. Procedure
Subtask 79-22-43-941-051-A ** ON A/C NOT FOR ALL

A. Put a CONTAINER 10 L(2 1/2 USGAL) below the oil tubes (22) and (10).

Scavenge Oil Filter Housing Assembly ** ON A/C NOT FOR ALL

Subtask 79-22-43-680-050-A ** ON A/C NOT FOR ALL

B. Drain the scavenge oil filter (Ref. AMM TASK 12-13-79-610-010).

Subtask 79-22-43-020-051-A ** ON A/C NOT FOR ALL

C. Removal of the Magnetic Chip Detector and the Scavenge Oil Filter Element:

Scavenge Oil Filter Housing Assembly ** ON A/C NOT FOR ALL

(1) Remove the magnetic chip detector housing (Ref. AMM TASK 79-22-45-000-010).
(2) Remove the scavenge oil filter element (Ref. AMM TASK 79-22-44-000-010).
(3) Remove the oil temperature sensor (Ref. AMM TASK 79-32-16-000-010).
(4) Disconnect the oil tubes.
(5) Disconnect the tubes (16) and (17) from the scavenge oil filter housing assembly (12).
(6) Remove the three bolts (1), the washer (23) and the bracket (2).
(7) Remove the three bolts (5) and the three washers (6) which attach the oil tube (10) to the oil scavenge pump (7).

Subtask 79-22-43-020-050-A ** ON A/C NOT FOR ALL

D. Removal of the Scavenge Oil Filter Housing Assembly:

Scavenge Oil Filter Housing Assembly ** ON A/C NOT FOR ALL

(1) Remove the scavenge oil filter housing assembly with the oil tubes (10) and (22)
(a) Hold the scavenge oil filter housing assembly (12)
(b) Remove the three bolts (13) and the three washers (14) that attach the scavenge oil filter housing assembly (12).
(c) Carefully move the scavenge oil filter housing assembly (12) to disengage the flange of the oil feed tube (22) from the flange on the oil tank.
(d) Disengage the flange of the oil tube (10) from the flange on the oil scavenge pump (7).
(e) Remove the scavenge oil filter housing assembly (12) with the oil tubes (10) and (22).
(f) Remove and discard the packings (3) and (8).
(2) Remove the oil tubes from the scavenge oil filter housing assembly.

Pre SBE 79-0064
(a) Remove the three bolts (21) and the three washers (20) and remove the oil feed tube (22).

SBE 79-0064
(b) Remove the oil feed tube (22).
END of SBE 79-0064
(c) Remove and discard the packing (19).
(d) Remove the three bolts (9) and the three washers (11) and remove the oil tube (10).
(e) Remove and discard the packing (4).
(3) Install CAP - BLANKING to all openings.

Subtask 79-22-43-942-050-A ** ON A/C NOT FOR ALL

E. Remove the container and discard the drained oil.

[Rev.10 from 2021] 2026.04.01 03:40:30 UTC