(3) Use two wrenches. Using one wrench to hold the tubing adapter, carefully remove the union nut and body
(4) Remove the two O-rings and valve and sleeve assembly.
(5) If the opposite end coupling is damaged or if any brazing/debrazing is to be done, repeat steps (3) and (4),
and remove half coupling from opposite end.
(6) If metallic hose, copper tube, 45° tube elbow, or tubing adapters are damaged, see paragraph 4-7 and
debraze parts to be replaced.
(7) If metallic hose, copper tube, 45° tube elbow, or tubing adapters are being replaced, clean all joints and braze
parts per paragraph 4-7.
(8) Oil O-ring liberally with refrigerant oil, item 13, Appendix E. This will prevent them from scuffing and tearing
(9) Place smaller O-ring on valve and sleeve assembly and larger O-ring on tubing adapter.
(10) Slip the valve and sleeve assembly with O-ring into the body.
(11) Using a wrench to hold the tubing adapter tighten the union nut and body assembly and torque to 15-20 foot
pounds (20-27 newton meters).
(12) Install the hose in the air conditioner. See c.(1) through (4).
(13) Replace the dehydrator. (See paragraph 4-73.)
(14) Leak test the hose, dehydrator, and joints in the repair area. (See paragraph 4-48.)
Follow-on Procedures: 1. Install access cover. (See paragraph 3-14.)
2. Install left end condenser cover. (See paragraph 3-27.)
3. Install top condenser cover. (See paragraph 3-25.)
4. Connect power.
4-66. COUPLING HALF, MALE (CONDENSER REFRIGERANT PIPING DISCONNECT)
1. Remove air conditioner from shelter. (See paragraph 3-6.)
2. Separate evaporator and condenser section assemblies. (See paragraph 4-14.)
3. Remove front condenser cover. (See paragraph 3-23.)
a. General. The coupling half fittings (hose disconnect fittings) used for joining the interconnecting refrigerant metal
hoses, contain a poppet valve assembly to prevent refrigerant loss and to keep air from entering the line when hoses are
disconnected. The following instructions apply to both the suction (low pressure) and discharge (high pressure)
b. Inspect. Check couplings for cracks, breaks, loose connections, and evidence of leakage. Repair or replace
Test leak test In accordance with paragraph 4-8.
|Integrated Publishing, Inc.|