Refrigeration Service Operations
145
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. There is usually enough give in
the copper tubing to separate the three sections
of the valve without unsoldering any tubes.
Removal/Disassembly
1. Recover the refrigerant charge.
2. Clean the exterior surface of the valve.
3. Remove the line from the three-way valve to
the pilot solenoid.
4. Loosen the four 1/4 in. Allen head screws (DO
NOT REMOVE OR CAP MAY POP OFF);
use tool P/N 204-424 to break the gasket at
each side of the center section.
Figure 227: Gasket Tool P/N 204-424
5. Remove the four bolts from the valve.
6. Remove the end cap and spring.
7. Remove the spring clip which secures the
stem to the piston. Slide piston off the stem.
8. Remove the seat and stem assembly.
9. Inspect the following parts for wear or
damage:
a. Bottom cap, sealing and support area.
b. Seat, sealing surface.
c. End cap, sealing and support surface.
The following parts will be discarded:
a. Stem assembly.
b. All gaskets.
c. Piston seal.
10. Remove the screen. If any particles drop from
the screen into the discharge line, the
discharge line must be removed at the
compressor.
NOTE: The valve body cannot be
reconditioned. Seat positions change and
improper sealing will result.
1.
Cap
7.
Clip
2.
End Cap
8.
Seat
3.
Check Valve
9.
Gaskets
4.
Spring
10.
Stem Assembly
5.
Piston
11.
Screen
6.
Seal
12.
Bottom Cap
Figure 226: Three-Way Valve
AEA714
CAUTION: Do not force the tool into the
brass or against the bolts.
AGA1069
