TM 9-4120-401-14
5 - 2 9 . SERVICE (CHARGING) VALVES. - continued
b. Replace.
(1) Remove refrigerant desiccant dehydrator. (See paragraph 5-22.)
(2) Remove screw (2), lock washer (3), flat washer (4), cap and chain (5), and loop clamp (6) from the
service valve (1) to be replaced.
(3) Disconnect flare nut (7) and remove service valve (1).
(4) Position new service valve (1) in place and tighten flare nut (7).
(5) Secure valve (1) and cap and chain (5) with loop clamp (6), screw (2), lock washer (3), and flat
washer (4).
(6) Install new refrigerant desiccant dehydrator. (See paragraph 5-22.)
NOTE
FOLLOW-ON MAINTENANCE:
Install top panels (para 4-11).
5-30. PRESSURE RELIEF VALVE.
This task covers:
a. Inspect
b. Replace
INITIAL SETUP
Equipment Condition
Tools
Refrigeration Unit Service Tool Kit
Appendix B, item 1
Materials/Parts
Use disconnect switch (NOT POWER
CABLE) to disconnect power to unit.
Pressure Relief Valve
Damage to cable connector pins will
result if cable is used.
Antisieze Tape
Appendix E, item 20
Disconnect power from power source.
Remove top panels (para 4-11).
a. Inspect.
Check pressure relief valve (1) for any visible damage or signs of leakage. Replace if damaged or leaking.
5-70
