ADAPTER BRACKET
AIR CHECK LINE VALVE SPACER
O-RING (EXAMPLE)
A
ADAPTER
WASHER
BOLT
HOLES TO MOUNT THE FILTER AIR LINE
FILTER HEAD O-RING
LOCKWIRE A
O-RING
A
FILTER
ELEMENT FILTER CASE
AIR FILTER UNIT SERVICING A-A
Air Filter Installation Figure 201 (Sheet 1)
C81968
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A
747-400
MAINTENANCE MANUAL
COMPRESSOR
INLET FILTER
SEE D
CANISTER
FILTER
SEE C
AIR COMPRESSOR AIR COMPRESSOR
B 1 B 2
FILTER CANISTER B HOUSING
O-RING
AIR COMPRESSOR
B
CANISTER FILTER
PERFORATED
AIR INLET FILTER
C
DISC O-RING D
O-RING
SNAP RING
FILTER
ELEMENT
1 COMPRESSORS WITH A BUILT-IN INLET FILTER
2 COMPRESSORS WITH CANISTER FILTER B-B
Air Filter Installation Figure 201 (Sheet 2)
C81965
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747-400 MAINTENANCE MANUAL
S 862-003
WARNING: MAKE SURE YOU REMOVE THE PRESSURE FROM THE WATER PRESSURIZATION
_______ SYSTEM BEFORE YOU START TO REMOVE THE FILTER BODY. 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 012-004
(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 032-006
(4)
Remove the lockwire from the filter body.
S 032-005
(5)
Loosen and remove the filter body and the element from the filter head.
S 022-007
(6)
Remove the filter element.
S 162-008
(7)
Clean the filter body.
TASK 38-15-64-402-009
3. Installation of Air Filter, Bleed-air Line, In-line Replacable Element______________________________________________________________________
A. References
(1)
AMM 24-22-00/201, Manual Control
(2)
AMM 36-00-00/201, Pneumatics
(3)
AMM 38-15-60/201, Water Tank Pressurization
B. Access
(1) Location Zone
124 Area Aft of Foward Cargo Container Compartment Aft Half, Right
C. Procedure
S 432-010
(1) Put a new O-ring on the new filter element.
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(2) S 422-011Put the new element in the filter body.
(3) S 432-012Put a new O-ring on the filter body.
(4) S 432-049Turn the filter body into the filter head.
(5) S 432-050Tighten the filter body to a torque of 50 pound-inches.
(6) S 432-051Install the lockwire to the filter body and the filter head.
(7) S 862-063Do one of these tasks if it is necessary to pressurize the pneumatic system (AMM 36-00-00/201): (a) Pressurize the Pneumatic System with a ground air source. (b) Pressurize the Pneumatic System with the APU. (c) Pressurize the Pneumatic System with one or more engines.
(8) S 712-013Make sure the water flow is normal at the lavatory faucet.
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