TM 9-6115-664-13&P
4-43.
ENGINE AIR FILTER MAINTENANCE
This task covers inspection and repair.
INITIAL SETUP
Tools:
Equipment Condition:
Shop Equipment, Automotive Maintenance
APU Shut Down
and Repair (Item 1, App. B)
NATO Plug Disconnected
Parts/Materials:
Adhesive, Loctite (Item 1, App. E)
A.
REMOVAL.
WARNING
Make sure that electrical cable is disconnected from NATO receptacle before
performing any maintenance action. Failure to do so can result in electrical shock.
NOTE
Discard and replace all lockwashers and locknuts when removed.
1.
Open top front cover on APU enclosure by turning latches.
2.
Disconnect engine air hose (1, Figure 4-33) from air duct on inside wall of APU enclosure.
3.
Release filter cover (2) from filter base (4) by unscrewing wing screw assembly (5).
4.
Remove filter cover (2) and filter (8) from filter base (4). Remove wing screw assembly (5), washer (6), and retainer
(7) only if replacement is required.
5.
Remove filter base (4), backing plate (14), and gasket (18) by removing nut (9), three bolts (11), and three
lockwashers (12). Remove set screw (13).
6.
If replacement of intake guard (10) is required, remove filter base (4) from backing plate (14) by removing three
screws (15), six washers (16), and three nuts (17).
B.
INSPECTION.
1.
Inspect engine air hose for cuts, tears, or other damage. Replace hose as required by loosening clamp (3).
2.
Inspect air filter cover and base for dents, cracks, warping, or other damage. Inspect for corrosion.
4-104
