TM 9-2320-260-34-1
11-5. AIR COMPRESSOR REPAIR (Contd)
7.
Remove four screws (1), lockwashers (2), washers (3), cylinder head cover (4), and gasket (5) from
cylinder head (12) and crankcase (14). Discard lockwashers (2) and gasket (5).
Remove cylinder head (12) and gasket (13) from crankcase (14). Discard gasket (13).
8.
Using arbor press, remove exhaust valve seat (7) from the bottom side of cylinder head (12).
9.
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10.
Remove preformed packings (6) and (8), and exhaust valve (9) from exhaust valve seat (7). Discard
preformed packings (6) and (8).
11.
12.
Remove two screw-assembled washers (15) and four screw-assembled washers (19) from crank-
case (14) and front support (18).
CAUTION
Use care when removing crankshaft from connecting rod. Crank-
shaft must be 90 before or after top dead center (T. D. C.) of piston
for ease of removal. Failure to do so may damage connecting rod
and crankshaft.
13.
Remove front support (18), gasket (17), and crankshaft (23) from crankcase (14). Discard gasket (17).
14.
Using mechanical puller, remove drive gear (20) and thrust bearing (21) from crankshaft (23).
15.
Remove key (16) and thrust bearing (22) from front support (18) and crankshaft (23).
16.
Remove pipe plug (24) from crankshaft (23).
17.
Remove piston (29) and connecting rod (30) from crankcase (14).
NOTE
Tag compression and oil rings for assembly.
18.
Remove two compression rings (25) and oil ring (26) from piston (29).
CAUTION
If piston pin cannot be removed from piston by hand pressure,
place piston in hot water to expand piston pin bore to allow
removal. Driving pin from piston may cause damage to piston.
19.
Remove two retaining rings (27), piston pin (28), and connecting rod (30) from piston (29).
11-12
