TM 9-4110-256-14
(6) Examine compressor (3) cylinder walls for any scoring or excessive wear (groove at top of piston (10)
travel). Replace compressor if scored or excessively worn.
(7) Press on top of highest piston (10). When pushed down, the higher piston should have some resistance
and the lower piston should rise. Repeat for other piston. If either piston was loose and did not cause the
other one to rise, replace piston and any other damaged components.
(8) If no failure was indicated, remove any gasket material from all machined gasket surfaces and install new
valve plate gasket (9), two reed valves (8), valve plate assembly (7), new cylinder head gasket (6),
cylinder head (5), and eight screws (4).
(9) Install cover (2) and two screws (1).
b. Removal.
NOTE
Remove only items necessary to access defective component(s).
(1) Remove center post (para 4-15) from between front bottom doors.
(2) Remove two screws (1) and cover (2).
(3) Tag wire leads (11). Remove four screws (12) and pull wire leads out through strain relief cable bushing
(13).
(4) Remove conduit locknut (14) and strain relief cable bushing (13).
(5) Tag capillary tubes (15) and loosen five flare nuts (16) from tees (17) and carefully pull tubes away from
tees being careful not to bend or kink tubes.
(6) Remove three tees (17).
(7) Remove two couplings (18) and caps and chains (19).
(8) Remove four screws (20). Pull two service valves (21) away from compressor (3) being careful not to
bend or kink tubing (22). Remove two service valve gaskets (23) and suction screen (24). Discard
gaskets.
(9) Remove four locknuts (25), screws (26), flat washers (27), and mounting spacers (28). Discard locknuts.
(10) Carefully lift each corner of compressor (3) and remove one each mounting spring (29) and shipping
bracket (30).
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