TM 9-4120-407-14
4-31. COMPRESSOR TESTING, REPAIR AND REPLACEMENT. (Cont)
(a) Transfer any refrigerant tubing remaining on the old compressor (10) Figure 4-24 that is not on
the new one.
(b) Install compressor heater (14) and screw (13).
(c) Install four shouldered washers (12) and flat washers (11).
Compressor is heavy and difficult to install in the air conditioner.
Injury can result if one person attempts to install it alone.
(d) Using two personnel, carefully install the compressor (10).
(e) Install four screws (7), flat washers (8), shouldered washers (9), one thermostatic switch (6),
bracket (5), and four nuts (4).
(f) Braze the compressor fittings (3). See paragraph 4-14.
(g) Install new desiccant dehydrator. See paragraph 4-20.
( h ) Install wiring harness connector P4 (1) onto connector J4 (2) per tags and wiring diagram Figure
(i) Connect wire leads (4) Figure 4-23 per tags and wiring diagram Figure 3-5. Remove tags.
(2) Crankcase Heater.
(a) Install grommet (24) Figure 4-23 if necessary.
(b) Push crankcase heater (8) in and install clip (23).
(c) Push wire leads (22) through grommet (24) and connect to connector J4 (6) using tags and wiring
diagram Figure 3-5. See paragraph 3-19. Remove tags.
(3) Compressor Heater.
(a) Install compressor heater (21) Figure 4-23 and screw (20).
(b) Connect wire leads (4) per tags and wiring diagram Figure 3-5. Use two new splices (25).
Remove tags.
(4) Thermostatic Switch.
(a) Install thermostatic switch (2) Figure 4-23, support (19), two screws (18), and new self locking
nuts (17).
(b) Connect wire leads (1) per tags and wiring diagram Figure 3-5. Remove tags.
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