COUPLING HALF, MALE (CONDENSER REFRIGERANT PIPING DISCONNECT)

TM 5-4120-359-14

(3) Use two wrenches. Using one wrench to hold the tubing adapter, carefully remove the union nut and body

assembly.

(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

(8) Oil O-ring liberally with refrigerant oil, item 13, Appendix E. This will prevent them from scuffing and tearing

when assembled.

(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.)

(15) Evacuate and charge the refrigerant system in accordance with paragraphs 4-9 and 4-10.

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)

Preliminary Procedures.

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

defective parts.

Test leak test In accordance with paragraph 4-8.

4-142