Removal of the Air Filter

TASK 38-42-42-000-001-A
Removal of the Air Filter

FIN: 4212MM ** 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 2M (6 FT)
No specific	AR	PLUG - BLANKING
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
161DW

C. 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 25-55-12-000-001-A	Removal of the Aft Cargo-Compartment Partition at FR65
TASK 38-10-00-614-002-A	Depressurization of the Potable Water System
TASK 52-30-00-860-001-A	Open the FWD or Aft Cargo-Compartment Door with the Yellow Electric Pump
Aft Air Filter

3. Job Set-up
Subtask 38-42-42-861-051-A ** ON A/C NOT FOR ALL

A. Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).

Subtask 38-42-42-614-050-A ** ON A/C NOT FOR ALL

B. Depressurize the potable water system (Ref. AMM TASK 38-10-00-614-002).

Subtask 38-42-42-865-050-A ** ON A/C NOT FOR ALL

C. Open, safety and tag this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
2001VU	WATER SYS-AIR-COMPRESSOR	19MD	F01

Subtask 38-42-42-010-050-D ** ON A/C NOT FOR ALL

D. Get Access
(1) Put the ACCESS PLATFORM 2M (6 FT) in position below the aft cargo-compartment door.
(2) Open the aft cargo-compartment door (Ref. AMM TASK 52-30-00-860-001).
(3) Remove the access panel 161DW from the aft cargo-compartment partition FR65 (Ref. AMM TASK 25-55-12-000-001).

4. Procedure
Subtask 38-42-42-020-050-A ** ON A/C NOT FOR ALL

A. Removal of the Air Filter
(1) Disconnect the line end of the pipe (1) from the check valve (2).
(2) Disconnect the line end of the pipe (6) from the air filter (5).
(3) Disconnect and remove the check valve (2) from the air filter (5).
(4) Remove the nuts (8), the washers (7) and the bolts (3) from the air filter (5).
(5) Remove the air filter (5) from the bracket.
(6) Remove and discard the O-ring (4).
(7) Put the PLUG-BLANKING in each disconnected line end.

[Rev.10 from 2021] 2026.04.02 06:26:01 UTC