TM 9-4120-388-14
5-21. COMPRESSOR (B1) - Continued.
(2) Tag and disconnect two thermostat leads.
(3) Using pliers, bend retaining tabs back.
(4) Remove thermostat.
(5) Install new thermostat as follows:
(a) Insert thermostat and carefully bend retaining tabs back to secure thermostat.
(b) See tags on removed thermostat. Connect thermostat leads.
(c) If this completes the repair, install junction box cover.
e. Compressor replacement.
(1)
Be sure to see that power has been disconnected at the power source, connectors (P4 and J4) were discon-
nected and that covers have been removed during access and test, proceed as follows:
DO NOT LIFT without holding unit in upright position. Unit will fall over.
NOTE
The compressor is mounted to the cabinet base by four bolts that are inserted from the
underside of the base. In order to remove the compressor, it is necessary that the entire
air conditioner be raised and placed on blocks of sufficient height to allow for removal
of these bolts from below the base.
Attach an overhead hoist to the Iifting handle on each side of the cabinet, using a sling and spreader bar.
(2)
Raise the cabinet and place it on blocks at least four inches high. Be sure the blocks do not obstruct the
(3)
holes in the base through which the compressor mounting shoulder screws must be removed.
(4)
Unwrap the insulation from the suction tube so that the joint on the compressor is exposed.
(5)
While purging the system with nitrogen, debraze tubing. (See para 5-8 and 5-9.)
(6)
(7)
Remove four locknuts and flatwashers from top of mounting feet and four shoulder bolts, eight flat washers,
and four rubber washers from underneath side of unit