Replace AC-Generator Scavenge Filter-Element (APS 3200)

TASK 49-91-41-920-002-A
Replace AC-Generator Scavenge Filter-Element (APS 3200)

WARNING: DO NOT TOUCH THE APU UNTIL IT IS SUFFICIENTLY COOL TO PREVENT BURNS WHEN YOU DO THE MAINTENANCE TASK(S).

WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.

WARNING: BEFORE YOU START WORK, YOU MUST PUT ON A SAFETY HARNESS AND ATTACH IT TO THE ACCESS PLATFORM. WITHOUT A SAFETY HARNESS, YOU CAN FALL. THIS CAN KILL YOU OR CAUSE YOU INJURY.

WARNING: LOCK THE MECHANISM OF THE ACCESS DOOR 316AR WITH THE PIP PIN WHEN YOU OPEN THE ACCESS DOOR. THIS WILL PREVENT INJURY.

CAUTION: DO NOT START THE APU WITH ACCESS DOORS 315AL AND 316AR OPEN/REMOVED. THE APU FIRE EXTINGUISHER SYSTEM IS NOT SUFFICIENT TO EXTINGUISH A FIRE IF THE ACCESS DOORS 315AL AND 316AR ARE OPEN/REMOVED.

ZONE: 310

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 4M (13 FT)-ADJUSTABLE
No specific	AR	CONTAINER 5 L (1.32 USGAL)
No specific	AR	LIGHT SOURCE - WHITE
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER
No specific	Torque wrench: range to between 177 and 133 lbf.in (2.00 and 1.50 m.daN )
98L12003001000	AR	HARNESS,SAFETY

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.03ABA1)	Synthetic base Lubricating Oil-Turbine Engine - -
(Material No.03ABB1)	Synthetic base Lubricating Oil-Turbine Engine Low Temp. -
(Material No.03FAB1)	Mineral Oil base Grease-- Vaseline or Petrolatum -

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
310	FUSLG TAIL SECTION AFT OF AFT PRESS BHD
315AL, 316AR

D. Expendable Parts

FIG.ITEM	DESIGNATION	IPC-CSN
3	PACKING	AIPC 49-91-04-50-160
4	FILTER-ELEMENT	AIPC 49-91-04-50-170
3	PACKING	AIPC 49-91-84-20-200
4	FILTER-ELEMENT	AIPC 49-91-84-20-210

E. Referenced Information

REFERENCE	DESIGNATION
TASK 24-41-00-861-002-A	Energize the Aircraft Electrical Circuits from the External Power
TASK 24-41-00-861-002-A-01	Energize the Aircraft Electrical Circuits from the APU
TASK 24-41-00-861-002-A-02	Energize the Aircraft Electrical Circuits from Engine 1(2)
TASK 24-41-00-862-002-A	De-energize the Aircraft Electrical Circuits Supplied from the External Power
TASK 24-41-00-862-002-A-01	De-energize the Aircraft Electrical Circuits Supplied from the APU
TASK 24-41-00-862-002-A-02	De-energize the Aircraft Electrical Circuits Supplied from the Engine 1(2)
TASK 29-00-00-864-001-A	Put the Related Hydraulic System in the Depressurized Configuration before Maintenance Action
TASK 49-00-00-860-005-A	APU Start by External Power
TASK 49-00-00-860-005-A-01	APU Start by Batteries
TASK 49-00-00-860-006-A	APU Shutdown by External Power
TASK 49-00-00-860-006-A-01	APU Shutdown by Batteries
TASK 49-90-00-600-004-A	Check Oil Level and Replenish (APS 3200)
TASK 49-91-42-200-003-A	Inspection of the Magnetic Drain Plug (APS 3200)
TASK 52-41-00-010-001-A	Open the APU Doors for Access
TASK 52-41-00-410-001-A	Close the APU Doors after Access
AC Generator Scavenge Oil-Filter

3. Job Set-up
Subtask 49-91-41-860-056-A ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).
(2) On the panel 25VU, make sure that the APU MASTER SW pushbutton switch is off.
(3) Put a warning notice in the cockpit to tell persons not to start the APU.
(4) Make sure that the hydraulic systems are depressurized
(Ref. AMM TASK 29-00-00-864-001).

Subtask 49-91-41-865-061-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	APU/APU/CTL	2KD	L42
121VU	APU/ECB/SPLY	1KD	L41

Subtask 49-91-41-010-054-A ** ON A/C NOT FOR ALL

C. Get Access
(1) Put on and attach the HARNESS, SAFETY before you start work in the work area.
(2) Put the ACCESS PLATFORM 4M (13 FT)-ADJUSTABLE in position below APU access doors 315AL and 316AR.
(3) Open APU access doors 315AL and 316AR (Ref. AMM TASK 52-41-00-010-001).
(4) Set light control switch 11LJ to the ON position.

4. Procedure

WARNING: USE THE CORRECT PERSONAL PROTECTION. OIL CAN HAVE ADDITIVE CALLED TRICRESYL PHOSPHATE IN IT. THIS CHEMICAL IS AN ASPHYXIANT, IT IS POISONOUS AND CAN BE ABSORBED THROUGH THE SKIN. USE CARE WHEN ENGINE OIL IS DRAINED. HOT OIL CAN POSSIBLY CAUSE BAD BURNS.

CAUTION: DO NOT CLEAN THE OIL FILTER ELEMENTS. YOU MUST DISCARD THEM AND INSTALL NEW FILTER ELEMENTS. IF YOU CLEAN THE OIL FILTER ELEMENTS, YOU CAN CAUSE DAMAGE TO THEM. THIS WILL CAUSE DAMAGE TO THE APU.

Subtask 49-91-41-020-055-A ** ON A/C NOT FOR ALL

A. Removal of the Oil Filter-Element
(1) Put the CONTAINER 5 L (1.32 USGAL) below the the oil-filter cap (2).
(2) Release and hold the the oil-filter latch assembly (1) in the open position.
(3) Remove the oil-filter cap (2).

NOTE: Let the remaining oil drain from the oil-filter ports in the gearbox into the container.

(4) Remove the oil-filter element (4).
(5) Inspect the oil-filter element (4) under a LIGHT SOURCE - WHITE for unwanted material.

NOTE: If you find unwanted material, continue as given in the inspection of the magnetic drain plug (Ref. AMM TASK 49-91-42-200-003).

(6) Discard the oil-filter element (4).
(7) Remove and discard the packing (3).

Subtask 49-91-41-420-056-A ** ON A/C NOT FOR ALL

B. Installation of the Oil Filter-Element
(1) If the delta P indicator has come out, push the indicator to set it again.
(2) Make sure that the oil-filter cap (2) is in the correct condition.
(3) Make sure that the latch assembly (1) is in the correct condition.
(4) Apply the Mineral Oil base Grease-- Vaseline or Petrolatum - (Material No.03FAB1) to the new AIPC 49-91-04-50-160 PACKING (3) or AIPC 49-91-84-20-200 PACKING (3).
(5) Install the new packing (3) on the oil-filter cap (2).
(6) Install the new AIPC 49-91-04-50-170 FILTER-ELEMENT (4) or AIPC 49-91-84-20-210 FILTER-ELEMENT (4).
(7) Apply the Synthetic base Lubricating Oil-Turbine Engine - - (Material No.03ABA1) or the Synthetic base Lubricating Oil-Turbine Engine Low Temp. - (Material No.03ABB1) on the thread of the oil-filter cap (2).
(8) Install the oil-filter cap (2).
(9) TORQUE the oil-filter cap (2) to between 177 and 133 lbf.in (2.00 and 1.50 m.daN )

.
(10) Do a check of the oil level at the oil-sight glass and add oil if necessary (Ref. AMM TASK 49-90-00-600-004).
(11) Remove the CONTAINER 5 L (1.32 USGAL) and obey the local regulations when you discard the drained oil.
(12) Remove the unwanted oil which fell on the APU and the adjacent area.

Subtask 49-91-41-865-062-A ** ON A/C NOT FOR ALL

C. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
121VU	APU/APU/CTL	2KD	L42
121VU	APU/ECB/SPLY	1KD	L41

Subtask 49-91-41-790-051-A ** ON A/C NOT FOR ALL

D. Leak Test
(1) Start the APU (Ref. AMM TASK 49-00-00-860-005) and operate it for 5 minutes.
(2) Do the APU shutdown procedure (Ref. AMM TASK 49-00-00-860-006).
(3) Check the oil-filter cap (2) for leakage.

NOTE: Leaks are not permitted.

5. Close-up
Subtask 49-91-41-410-054-A ** ON A/C NOT FOR ALL

A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close APU access doors 315AL and 316AR (Ref. AMM TASK 52-41-00-410-001).
(3) Remove the access platform(s).
(4) Remove the safety harness.

Subtask 49-91-41-860-057-A ** ON A/C NOT FOR ALL

B. Aircraft Maintenance Configuration
(1) Put the related hydraulic system in the pressurized configuration (Ref. AMM TASK 29-00-00-864-001).
(2) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).
(3) Remove the WARNING NOTICE(S).

[Rev.10 from 2021] 2026.04.01 01:33:13 UTC