(2)
Dryer - Oven, which can be set to 140° F (60° C)
(for the optional procedure)
(3)
Hot Bath - Parts, sufficient dimension to soak the air cleaner at 130° F (54° C). (for the optional procedure)
C. Consumable Materials
(1) B00615, Degreaser - Solvent Emulsion, NEUGENIC 4177 (for the optional procedure)
D. Access
(1) Location Zone 121 Forward Cargo Compartment Forward Half, LH
E. Clean the Cleaner
S 022-037
(1) Do the Equipment Cooling Air Cleaner Removal (Ref 21-58-10/201).
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747-400 MAINTENANCE MANUAL
S 142-038
(2)
Use a vacuum cleaner or compressed air to remove the loose material from the cleaner.
S 142-039
(3)
Do the usual procedure.
(a)
Clean the air cleaner with soap and water.
(b)
Flush the air cleaner with clean water.
(c)
Dry the air cleaner fully with compressed air.
S 142-040
(4) Do the optional procedure.
(a)
Put the air cleaner in the solution at 130°F (54°C) for one hour.
(b)
Clean the air cleaner with the solution.
(c)
Use a brush to remove the unwanted material.
(d)
Flush the air cleaner with clean water.
(e)
Dry the air cleaner with compressed air.
(f)
Dry the air cleaner in an oven for one hour at 140°F (60°C).
S 422-041
(5) Do the Equipment Cooling Air Cleaner Installation
(Ref 21-58-10/201).
TASK 21-58-10-002-001
3. Equipment Cooling Air Cleaner Removal (Fig. 201)_____________________________________
A. References
(1)
24-22-00/201, Manual Control
(2)
25-52-01/401, Containerized Cargo Compartment Ceiling and Sidewall Linings
(3)
IPC 21-58-10 Fig. 1
B. Access
(1) Location Zone 121 Forward Cargo Compartment Forward Half, LH
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MAINTENANCE MANUAL
STA 560
STA 540
STA 520
AIR CLEANER
SEE A
SMOKE/OVERRIDE VALVE (REF)
FORWARD CARGO COMPARTMENT LEFT SIDEWALL
SCREW/WASHER (6 LOCATIONS)
AIR
CLEANER
SUPPLY
AIR DUCT
A
Equipment Cooling Air Cleaner - Maintenance Practices
Figure 201
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747-400 MAINTENANCE MANUAL
C. Prepare for the Removal
S 862-002
CAUTION: DO NOT OPERATE THE ELECTRICAL/ELECTRONIC EQUIPMENT WHEN YOU DO
_______ THIS PROCEDURE. IF YOU OPERATE THE ELECTRICAL EQUIPMENT WHEN THE EQUIPMENT COOLING SYSTEM IS OFF, YOU CAN CAUSE THE ELECTRICAL EQUIPMENT TO BECOME TOO HOT.
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