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TM 9-4120-389-14
WARNING
All refrigerant -22 must be discharged from system before removal of expansion
valve.
(1)
Discharge the refrigeration system (See para. 5-3).
(2)
Remove split grommet from casing and capillary line.
(3)
Restrain valve with wrench.
(4)
Loosen three flare nuts on valve.
(5)
Remove screw, lockwasher and nut from clamp.
(6)
Remove valve from clamp.
(7)
Pull sensing bulb through hole in bulkhead and remove valve from unit.
d.
Installation
CAUTION
Use care not to damage or kink capillary.
(1)
Coil capillary into two loops.
(2)
Thread sensing bulb through hole in bulkhead.
(3)
Secure sensing bulb to suction line with clamp (supplied with valve) and screw.
(4)
Place valve in clamp.
(5)
Restrain valve.
(6)
Tighten three flare nuts on valve.
(7)
Install screw, lockwasher and nut in clamp.
(8)
Install split grommet on capillary and in casing.
(9)
Install suction line insulation around sensing bulb.
(10)
Replace the dehydrator (See para. 5-10).
5-59
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