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 TM9 4120-423-14&P
5
Carefully spring the tubing back enough to gain access to the hexes on the body and tubing
adapter.
6
Use two wrenches. Using one wrench to hold the tubing adapter, carefully remove the valve
body. Carefully spring tubing back enough to remove the half coupling body, the poppet valve
assembly, the O-ring, and the gasket seal.
7
Inspect the tubing adapter for cracks and damaged threads. If defective, note position of tubing
adapter and hex. Debraze the tubing adapter in accordance with instructions in WP0072.
TEST AND INSPECTION
1
Leak test in accordance with WP0073.
2
Check couplings for cracks, breaks, loose connections, and evidence of leakage. Repair or
replace defective parts.
INSTALLATION
1
If the tubing adapter was removed, braze a new one in place in original position in accordance
with instructions in WP0072.
2
Oil O-ring liberally with refrigerant oil. This will prevent it from scuffing and tearing when
coupling body is threaded into adapter.
3
Place O-ring on tubing adapter.
4
Insert poppet valve assembly into body.
5
Carefully engage the threads of the body and tubing adapter.
6
Use two wrenches. Use one wrench to hold the tubing adapter and the other to tighten the half
coupling body to: suction line (larger) 35-45 foot-pounds (48-61 newton-meters), discharge line
(smaller) 15-20 foot-pounds (20-27 newton-meters).
7
Slip the gasket seal over the threaded body end and place body threaded end through the bracket.
8
Using a wrench, tighten jam nut.
9
Using wrench, carefully reconnect the suction and discharge condenser to evaporator Refrigerant
R-22 metal hose line connectors to the coupling halves.
10
Replace the dehydrator. (See WP0080).
11
Leak test the coupling halves, the dehydrator, and joints in the repair area in accordance with
0092 00-3
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