TM 9-4110-255-14
(i) Install two new discharge valves (9), discharge valve stops (8), four new lock washers (7), and
screws (6).
(j) Install new cylinder head gasket (5), cylinder head (3), two studs (2), lifting lug (4), and six screws
(1). Torque screws and studs to between 40 and 55 ft-lb (54 and 75 Nm).
(k) Replace dehydrator (para 5-17). Leak check (para 5-13), evacuate (para 5-14), and charge (para 5-
15) the refrigeration system.
(2) Sight Glass.
(a) Discharge the refrigeration system (para 5-10).
(b) Remove sight glass (17) and gasket (21). Discard gasket.
(c) Remove any gasket material from all machined gasket surfaces. Install new gasket (21) and sight
glass (17). Torque sight glass to between 35 and 50 ft-lb (48 and 68 Nm).
(d) Replace dehydrator (para 5-17). Leak check (para 5-13), evacuate (para 5-14), and charge (para 5-
15) the refrigeration system.
(3) Oil Pump.
(a) Discharge the refrigeration system (para 5-10).
(b) Loosen flare nut (22) and carefully pull tube (23) away being careful not to bend or kink tube.
(c) Remove elbow (24) and adapter (25).
(d) Note position of oil pump (26) and remove eight bolts (27), oil pump, gasket (28), thrust washer (29),
and two pins (30). Discard gasket.
(e) Remove any gasket material from all machined gasket surfaces. Rotate oil pump coupling (31) to
align with slot in compressor shaft (32). Install two pins (30), thrust washer (29), new gasket (28), oil
pump (26) positioned as noted during removal, and eight bolts (27). Torque bolts to between 6 and
10 ft-lb (8 and 14 Nm).
(f) Wrap anti-seize tape around adapter (2 ) and elbow (24) threads. Install adapter and elbow.
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(g) Align tube (23) being careful not to bend or kink tube. Tighten flare nut (22).
(h) Replace dehydrator (para 5-17). Leak check (para 5-13), evacuate (para 5-14), and charge (para 5-
15) the refrigeration system.
5-75
