Thermo King 088669, Manual

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Refrigeration Service Operations (Rev. 04/03)
79
3. Remove the snap ring.
4. Unscrew the check valve stem by using a screwdriver
in the slot provided.
NOTE: Spring and valve are held in by the stem.
While removing the stem, use care so the spring and
valve are not lost.
5. Remove the spring and Teflon valve.
6. Inspect the check valve seat in the three-way valve.
7. If replacement parts are needed, a 60-163 kit must be
used which includes the Teflon valve, spring, O-ring,
valve stem and snap ring.
Installation
1. Coat the O-ring with compressor oil (use same type of
oil that is used in the system) and install it on the check
valve stem.
2. Insert the spring into the hole in the check valve stem
and then install the Teflon check valve on the other end
of the spring with the hole in the valve towards the
spring.
3. Coat the entire assembly with compressor oil and
install the assembly into the check valve seat in the
three-way valve.
CAUTION: The Teflon valve must be inserted with
the flat side against the valve seat to ensure proper
sealing.
4. Screw the check valve stem into the three-way valve
until the snap ring can be installed.
5. Install the snap ring.
6. Unscrew (back seat) the check valve stem against the
snap ring.
NOTE: Valve stem must be back seated during nor-
mal unit operation.
7. Coat sealing area in cap with compressor oil (use same
type of oil that is used in the system), install and tighten
the cap on the three-way valve.
8. Pressurize the refrigeration system and test for leaks. If
no leaks are found, evacuate the system.
9. Recharge the unit.
THREE-WAY VALVE REPAIR
NOTE: The three-way valve can be repaired in the unit if
leakage or damage to the Teflon seals should occur.
Removal
1. Remove the refrigerant charge.
2. Clean the exterior surface of the valve.
3. Remove the 1/4 in. copper line from the three-way
valve to the pilot solenoid.
4. Loosen the four 1/4 in. Allen head screws (DO NOT
REMOVE); use tool # 204-424 to break the gasket at
each side of the center section.
CAUTION: Do not force the tool into the brass or
against the bolts.
5. Unsolder the condenser line from the condenser.
6. Remove the 4 bolts from the valve.
7. Remove the top cap and spring.