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5-25. Receiver
a. Removal.
discharge the
Refer to paragraph 6-3 a nd
refrigerant
system.
Refer to
paragraph 4-21 and remove rear top cover. Remove
four screws and two mounting straps (fig. 5-8).
Disconnect receiver tubing.
b. Installation. Install receiver and colder
connections. Install two mounting straps a nd four
screws using sealing compound on screw threads.
Refer to paragraph 6-3 and charge the refrigerant
system.
5-26. Liquid Sight Indicator
a. Removal. Refer to paragraph 6-3 and
discharge the refrigerant system. Remove housing
rear top cover (para 4-21 ). Remove two screws and
lock washers from sides of liquid sight indicator
(fig. 1-2 ) and remove mounting bracket (fig. 5-8)
from inside housing. Unsolder liquid sight indicator
from tubing.
b. Installation. Solder liquid sight indicator on
tubing. Place bracket over indicator on inside of
housing and secure with two screws and lock
washers. Install housing top rear cover (para 4-21).
Refer to paragraph 6-3 and charge the refrigerant
system.
5-27. Solenoid Valves
a. Removal. Removal procedures for the bypass
solenoid valve and the equalizer solenoid valve are
the same except for the mounting hardware.
(1) Refer to paragraph 6-3 and discharge the
refrigerant system.
(2) Refer to paragraph 4-21 and remove
housing rear top cover.
(3) Disconnect solenoid valve electrical
connector.
(4) Remove two socket-head cap screws from
underside of valve body and carefully remove
bonnet assembly. Do not drop plunger. Remove
diaphragm.
Caution: Remove bonnet assembly and
diaphragm before applying heat to valve body.
(5) To remove liquid bypass solenoid valve
(fig. 5-8),
unsolder
bushings.
remove two
valve body
screws
from
and spacers and
tubing.
Remove
(6) To remove equalizer solenoid valve,
remove two screws a nd lock- washers that secure
valve body to bracket. Unsolder valve body and
remove bushings.
b. Installation. Install solenoid valves as follows:
( 1 ) Install bushings in valve body and solder
body on tubing.
(2) When installing equalizer solenoid valve
body, secure body to bracket with two screws and
lock washers install from underside of bracket into
valve body.
(3) When installing liquid bypass solenoid
valve body,
install spacers between body and
housing and install two screws from outside of
housing.
(4) Place diaphragm in the body with the pilot
port extension away from body. Hold plunger with
synthetic seat a gainst pilot port. Make sure
preformed packings are in place and lower bonnet
assembly over plunger. Install body screws.
(5) Connect electrical connector.
(6) Refer to paragraph 4-21 and install
housing rear top cover.
(7) Refer to paragraph 6-3 and charge the
refrigerant system.
5-28. Thermal Expansion Valve
a. GeneraI. The main thermal expansion valve is
hermetically sealed and cannot be repaired.
b. Rermoval. Remove the thermal expansion
valve as follows:
(1) Refer to paragraph 6-3 and discharge the
refrigerant system.
(2) Remove housing top covers (para 4-21).
(3) Soften mastic in bulb well (fig. 5-9) and
remove bulb from well. Take care to prevent
dam age to capillary tube.
(4) Unsolder thermal expansion valve from
tubing.
5-15
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