TM 9-4120-403-14
(3) Connector and harness
NOTE
Compressor must be removed in order to replace connector and harness
(a) Remove four screws, locknuts, and connector from compressor.
(b) Remove three screws, ground wire, and connector box cover.
(c) Tag wire leads.
(d) Cut three wires at splice on compressor side of splice.
(e) Remove four quick-disconnect terminals.
(f) Strip ends of three compressor leads approximately 3/8".
(g) Using tags and wiring schematic (fig. 5-25.), crimp three compressor wire leads to new connector and
harness. Remove the tags.
(h) Using tags and wiring schematic (fig. 5-25.), connect four harness quick-disconnect terminals to compressor.
(i) Secure the connector to the compressor connection box with four screws and locknuts.
(j) Secure connector box cover and ground wire with three screws
Cleaning
(a) After removal of a bad compressor from the refrigeration system, remove all external tubing, noting its
position, and tip the compressor toward the discharge port to drain sample of oil into a clear glass container.
(b) If the oil is clean and clear, and does not have a burnt acid smell, the compressor did not fail because
of motor burnout. If a burnout is not indicated, continue to replace compressor.
(c)
If the oil is black, contains sludge, and has a burnt acid odor, the compressor failed because of motor
burnout.
(d) You must clean the entire refrigeration system after a burnout has occurred, since contaminants will
have been carried to many corners and restrictions in the piping and fittings. These contaminants will soon mix with new
refrigerant gas and compressor oil to cause repeated burnouts.
5-80
