Thermo King SB-190 30, Manual

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Refrigeration Service Operations (Rev. 12/03)
75
4. Use the three-way valve seal installation tool
P/N 204-1008 to install a new seal on the piston. This
prevents the seal from being stretched and damaged.
a. Place the tapered tool over the piston.
b. Lubricate the seal with refrigeration oil.
c. Slide the seal onto the tapered tool with the spring
side facing away from the piston.
d. Use the pipe to hand press the seal onto the piston.
5. Place the piston slot on the stem and secure with spring
clip. The open part of the clip should be on the opposite
side of the piston slot.
6. Install the spring and top cap.
1. Cap 7. Clip
2. Top Cap 8. Seat
3. Check Valve 9. Gaskets
4. Spring 10. Stem Assembly
5. Piston 11. Screen
6. Seal 12. Bottom Cap
Three-Way Valve
AEA714
1
1. Press by Hand 4. Tapered Tool
2. Pipe 5. Piston
3. Seal
Seal Installation with Tool P/N 204-1008
ARA166
2
3
4
5