(10)
For the ceiling panels that were removed, do this task: "Forward Cargo Container Compartment Ceiling and Sidewall Linings -Installation" (AMM 25-52-01/401).
S 862-064
(11)
Do this task: "Water System Pressurization" (AMM 38-15-60/201).
S 862-055
(12)
If pneumatic power is not necessary, do this task: "Release the Pressure in the Pneumatic System (AMM 36-00-00/201).
S 862-056
(13)
Remove electrical power if it is not necessary (AMM 24-22-00/201).
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. FREIGHTERS ú
38-15-64
ú ú 01 Page 205 ú Feb 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
TASK 38-15-64-002-015
4. Bleed-air Line In-line Air Filter Removal (Fig. 201)_________________________________________
A. General
(1) The bleed-air line air filter is referred to as the filter in this task.
B. References
(1)
AMM 25-52-01/401, Containerized Cargo Compartment Ceiling and Sidewall Linings
(2)
AMM 36-00-00/201, Pneumatic
(3)
AMM 38-15-60/201, Water Tank Pressurization
C. Access
(1) Location Zone 124 Forward Cargo Container Compartment Aft Half, Right
D. Procedure
S 862-016
WARNING:_______REMOVE THE AIR PRESSURE FROM THE PNEUMATIC MANIFOLD. AIR WITH HIGH PRESSURE AND TEMPERATURE CAN CAUSE INJURY TO PERSONS.
(1) If the pneumatic manifold is pressurized, do this task: "Release the Pressure in the Pneumatic System" (AMM 36-00-00/201).
S 862-017
WARNING: MAKE SURE YOU REMOVE THE PRESSURE FROM THE WATER PRESSURIZATION
_______ SYSTEM BEFORE YOU START TO REMOVE THE BLEED-AIR LINE AIR FILTER. THIS REMOVES THE PRESSURE THAT IS IN THE WATER PRESSURIZATION SYSTEM. AIR THAT HAS HIGH PRESSURE CAN CAUSE INJURY TO PERSONS.
(2)
Do this task: "Water System Depressurization: (AMM 38-15-60/201).
S 012-018
(3)
For the ceiling panels in the area between RBL 35 and RBL 55 from stations 840 to 860, do this task: "Containerized Cargo Compartment Ceilings and sidewall Linings - Removal" (AMM 25-52-01/401).
S 032-019
(4)
Remove the two clamshell couplings that are installed adjacent to the filter.
(5)
Move the sleeves for the coupling away from the filter.
S 032-020
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. FREIGHTERS ú
38-15-64
ú ú 01 Page 206 ú Feb 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
S 032-021
(6)
Remove the two screws, washers and spacers that hold the filter on the bracket.
S 022-022
(7)
Remove the filter with the check valve and the adapters attached.
S 032-023
(8)
Disconnect the adapter from the inlet side of the filter.
S 032-024
(9)
Disconnect the check valve with the adapter from the outlet side of the filter.
TASK 38-15-64-402-025
5. Bleed-air Line In-line Air Filter Installation______________________________________________
A. References
(1)
AMM 24-22-00/201, Manual Control
(2)
AMM 25-52-01/401, Containerized Cargo Compartment Ceiling and Sidewall Linings
(3)
AMM 36-00-00/201, Pneumatic
(4)
AMM 38-15-60/201, Water Tank Pressurization
B. Access
(1) Location Zone 124 Forward Cargo Container Compartment Aft Half, Right
C. Consumable Materials
(1) D00463 Lubricant - White Protopet 1S (WITCO Corp, New York, NY 07804)
D. Procedure
S 862-057
(1)
Make sure the ends that connect are clean.
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