(4) Replace all rubber seals and gaskets each
KEY to figure 6-1-Continued:
172.
Nut
180.
Receiver
time tube assemblies are removed.
(5) Replace valves found to be defective
173.
Flat washer
181.
Screen
174.
Bolt
182.
Screw
through troubleshooting and testing.
(6) Replace all other parts damaged beyond
175.
Tube assembly
183.
Flat washer
simple repair.
176.
Rubber seal
184.
Bolt
c. Installation. Install the tube assemblies and
177.
Cap
185.
Flat washer
178.
Valve
186.
Foam tape
fittings by reversing the procedures required to remove
179.
Hose clamp
187.
Condenser
them.
Section II. COMPRESSORS, CONDENSER, AND EVAPORATORS
emphasis on sub-paragraph (4)
which
requires
the
6-3. General
replacement of seals and gaskets.
No major repairs on the compressors, condensers, and
(3) Install all electrical wire harnesses.
evaporators shall be performed at this maintenance
c. Service
level. It, however, is the responsibility of Direct Support
(1) Refrigerant filter. This filter is located on
Maintenance to test and replace the condensers and
the bottom of the compressor motor housing and is
evaporators as necessary. Also, minor services to the
designed to filter the refrigerant entering the
compressors shall be performed at this level in addition
compressor.
The
filter
should
be
replaced
to replacement of the entire assembly.
periodically as some foreign material will accumulate
6-4. Compressors
within it. The gaskets must also be replaced each time
a. Removal.
the filter is replaced.
(1) Tag the electrical wire harnesses to facilitate
(2) Thermostatic switch.
reinstallation. Disconnect the wire harnesses.
(a) This switch assembly is located in a well
(2) Tag the tube assemblies prior to removal to
at the lower portion of the motor housing assembly. The
facilitate reinstallation.
Disconnect all tubing that
switch assembly consists of a shield, thermostat, and an
connects to the compressor.
electrical connector.
(3) Remove the nuts (93, fig. 6-1, sheet 2 of 6),
(b) The switch is designed to open (break
washers (94), spacers (95), and bolts (96). Remove the
the circuitry to the compressor) when the motor housing
compressor (97) from the mount and remove the
reaches 225 15F (107.2 9.4C). When the
spacers (98). Remove the other compressor (114, fig.
compressor housing cools down to 165 15F (73.9
,
9.4 C, the switch will close again to allow the
b. Installation.
compressor to resume operation.
(1) Position the spacers (98, figure 6-1, sheet 2
(c) If the switch should fail to close after the
of 6) and the compressor (97) on the mount. After
compressor housing has cooled to the required
aligning the holes, insert bolts (96) and washers (94)
temperature, remove the switch and inspect it in
through the bottom. Replace the spacers (95) and
accordance with requirements shown in figure 6-2.
secure the compressor using the nuts (93) and washers
Check also for damage to the pins of the connector.
(94).
(d)
Replace a switch found to have
(2) Install the tube assemblies.
damaged pins.
Note. Prior to installing tube assemblies, observe the
instructions given in paragraph 6-2b for the cleaning,
(e) Replace a switch that does not meet the
inspection, and repair of tube assemblies and fittings with the
requirements shown in figure 6-2.
6-13
