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Refrigeration Service Operations (Rev. 04/03)
86
THROTTLING VALVE
Removal
1.
Pump down the low side and equalize pressure to
slightly positive.
2.
Front seat the discharge and suction service valves.
Release remaining pressure.
3.
Remove the suction valve and line from compound
gauge.
4.
Unbolt and remove the throttling valve from the unit.
Repair
DISASSEMBLY
1.
Remove the piston end cap (round end).
2.
Remove the cotter pin from the castle nut and remove
the nut.
3.
Remove the spring and piston.
4.
Loosen all the bolts on bellows end cap.
CAUTION: This end cap is under slight spring pres-
sure.
5.
Break the gasket free and remove the end cap.
6.
Note the number of shims next to the cap. These can be
reused.
7.
Remove bellows (discard).
8.
Inspect all the parts (replace if excess wear is found).
a.
Piston and cap for wear (scuff marks)
b.
Body for stripped threads
c.
Bellows end cap for damage in pilot hole
NOTE: Bellows is normally replaced.
9.
Clean the parts to be reused.
Summary of Contents for 088669
Page 4: ......
Page 8: ......
Page 12: ...Safety Precautions Rev 04 03 iv PUB126...
Page 13: ...Safety Precautions Rev 04 03 v aea105...
Page 14: ......
Page 28: ...Unit Description Rev 04 03 14 Rear View Curbside RD II SR Evaporator aea105...
Page 32: ...Unit Description Rev 04 03 18 Power Receptacle Box RD II SR 50 aea102...
Page 76: ...Refrigeration Maintenance Rev 04 03 62...
Page 77: ...Refrigeration Maintenance Rev 04 03 63...
Page 81: ...Refrigeration Maintenance Rev 04 03 67...
Page 103: ...89 Hilliard Clutch Maintenance Clutch Assembly...
Page 106: ...Hilliard Clutch Maintenance Rev 04 03 92 12 Install retaining ring Clutch Torque Values...
Page 125: ...111 Cool Cycle RD II SR with TherMax Heating...
Page 126: ...112 Condenser Cycle RD II SR with TherMax Heating...
Page 127: ...113 Heat and Defrost Cycle RD II SR with TherMax Heating...
Page 129: ...115...
Page 130: ...116...
Page 131: ...117...
Page 132: ...118...
Page 133: ...119...
Page 134: ...120...
Page 135: ...121...
Page 136: ...122...