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TM 9-4110-257-14
5-38. COMPRESSOR B1 TESTING, SERVICE. REPAIR, AND REPLACEMENT. - Continued
(i)
Remove two bolts (35), old seal plate (36), and old carbon ring (38). Be careful not to touch new shaft
seal (40) carbon sealing surface with fingers. Discard seal plate and carbon ring.
(j)
Apply a small amount of lubricating oil onto new carbon ring (38) and new seal plate (36) where it
contacts carbon ring being careful not to touch carbon sealing surfaces with fingers.
CAUTION
Carbon ring notches must be aligned with seal plate tabs when installed to prevent damaged.
(k) Install new carbon ring (38) into new seal plate (36). Be sure notches in carbon ring align with tabs in seal
plate. Be careful not to touch carbon sealing surfaces with fingers.
(l)
Remove any gasket material from all machined gasket surfaces. Install new gasket (37), new seal plate
(36) with new carbon ring (38), and six bolts (35). Be careful not to touch carbon sealing surfaces with
fingers. Torque bolts to between 15 and 21 ft-lb (20 and 29 Nm).
(m) Replace dehydrator (para 5-14). Leak check (para 5-10), evacuate (para 5-11), and charge (para 5-12)
the refrigeration system.
(n) Install compressor pulley (para 4-41). Install and adjust compressor V-belts (para 4-38).
d. Removal.
(1) Discharge the refrigeration system (para 5-7).
(2) Remove compressor pulley (para 4-41).
(3) Remove center post (para 4-15).
(4) Tag tube (26) and three tubes (41). Loosen flare nut (25) and three flare nuts (42). Carefully pull tubes away
being careful not to bend or kink tubes.
(5) Remove adapter (27) and two adapters (43).
(6) Remove two bolts (1) and two bolts (44). Pull service valve (2) and service valve (45) away from compressor (3)
being careful not to bend or kink tubing (4) or tubing (46). Remove service valve gasket (5) and service valve
gasket (47) and suction screen (6). Discard gaskets.
(7) If damaged, remove two couplings (48).
(8) Remove four bolts (49), lock washers (50), and flat washers (51). Discard lock washers.
WARNING
Compressor weight exceeds 108 lb. (49 kg). Use appropriate lifting device to avoid personal injury.
(9) Remove compressor (3).
5-82
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