Installation of the Compressor

TASK 38-42-51-400-001-A
Installation of the Compressor

FIN: 8MD ** 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)

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
132PW, 162DW

C. Referenced Information

REFERENCE	DESIGNATION
TASK 12-15-38-613-001-A	Fill the Potable Water Tank System (Aircraft Electrical Power Available)
TASK 20-28-00-912-802-A	Electrical Bonding - General Maintenance Procedure
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 25-54-12-000-001-A	Removal of the Forward Cargo-Compartment Partition
TASK 25-55-12-400-001-A	Installation of the Aft Cargo-Compartment Partition at FR65
TASK 38-10-00-614-002-A	Depressurization of the Potable Water System
TASK 38-42-00-710-001-A	Operational Test of the Auxiliary Air Supply System.
TASK 52-30-00-860-001-A	Open the FWD or Aft Cargo-Compartment Door with the Yellow Electric Pump
TASK 52-30-00-860-002-A	Close the FWD or Aft Cargo-Compartment Door with the Yellow Electric Pump
TASK 52-30-00-860-004-A	Close the FWD or Aft Cargo-Compartment Door with the Hand Pump
Compressor 8MD

3. Job Set-up
Subtask 38-42-51-860-051-A ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) Make sure that the aircraft electrical circuits are energized (Ref. AMM TASK 24-41-00-861-002).
(2) Make sure that the potable water system is depressurized (Ref. AMM TASK 38-10-00-614-002).
(3) Make sure that the ACCESS PLATFORM 2M (6 FT) is in position.
(4) Make sure that the FWD cargo-compartment door is open and safetied (Ref. AMM TASK 52-30-00-860-001).
(5) Make sure that access panel 132PW is removed (Ref. AMM TASK 25-54-12-000-001).

Subtask 38-42-51-865-052-A ** ON A/C NOT FOR ALL

B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:

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

4. Procedure
Subtask 38-42-51-420-050-C ** ON A/C NOT FOR ALL

A. Installation of the Compressor 8MD
(1) Make sure that the parts retained from the removed component are clean and in the correct condition.
(2) Do an inspection of the component interfaces and the adjacent area.
(3) Lower the compressor (4) in to position on the ground plate (8).
(4) Put the bonding strap (3) and the washers (2) in position.
(5) Install the bolts (7) and the nuts (1) to secure the compressor (4) in position.
(6) Apply protective coating to the bonding strap (Ref. AMM TASK 20-28-00-912-802).
(7) Remove the blanking plug from the pipe-connection (6) and connect it to the compressor (4).
(8) Remove the CAP-BLANKING from each electrical connector and receptacle.

CAUTION: MAKE SURE THAT THE ELECTRICAL CONNECTORS ARE CLEAN BEFORE YOU DISCONNECT OR CONNECT THEM. CONTAMINATION ON THE ELECTRICAL CONNECTORS CAN CAUSE DAMAGE TO EQUIPMENT.

(9) Connect the electrical connector (5) to the compressor (4).

Subtask 38-42-51-865-051-A ** ON A/C NOT FOR ALL

B. 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
2001VU	WATER SYS-AIR-COMPRESSOR	19MD	F01

Subtask 38-42-51-860-050-A ** ON A/C NOT FOR ALL

C. Preparation for Test
(1) Fill the potable water system (Ref. AMM TASK 12-15-38-613-001).

Subtask 38-42-51-710-050-A ** ON A/C NOT FOR ALL

D. Do the operational test of the compressor (Ref. AMM TASK 38-42-00-710-001).

5. Close-up
Subtask 38-42-51-410-050-C ** 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) Install access panel 162DW (Ref. AMM TASK 25-55-12-400-001).
(3) Set cargo-compartment light switch 8LU to OFF.
(4) Remove the access platform(s).
(5) Close the AFT cargo-compartment door (Ref. AMM TASK 52-30-00-860-002) or (Ref. AMM TASK 52-30-00-860-004).

Subtask 38-42-51-862-050-A ** ON A/C NOT FOR ALL

B. De-energize the aircraft electrical circuits. (Ref. AMM TASK 24-41-00-862-002)

[Rev.10 from 2021] 2026.04.05 10:36:38 UTC