104
TK 61753-2-MM-EN
10. Gasket 26. Plate Cover
11. Sealing Washer 37. Cover Gasket
12. Valve O-Ring 28. Schrader Valve
13. Suction Transducer 29. O-ring seal adapter
14. Suction Valve adapter 30. O-ring
15.
Adapter O-Ring
31.
Adapter Cap
16. Discharge Valve screw
Compressor
Removal
1. Pump down the compressor and equalize the pressure to 0 psig (0 bar). Verify that pressure holds 0 psig and front
seat the discharge and suction service valves to isolate the compressor from the circuit. Recover remaining
refrigerant from the compressor before moving to next steps.
2. Remove the Combined Motor Generator (CMG) belt.
NNoottee:: See (“AC Generator Repair,” p. 30) Steps 1 thru’ 4 on how to remove this bellt.
3. Unbolt and remove compressor oil filter bracket from flywheel housing (optional).
4. Unbolt the discharge valve and the suction valves from the compressor.
5. Keep the compressor ports covered to prevent dust, dirt, etc., from falling into the compressor.
6. Disconnect all high pressure cutout switch wires. Disconnect the pilot solenoid valve line.
7. Support compressor and remove the compressor mounting bolts from flywheel housing.
8. Lift the service valves out of the way.
9. Slide the compressor to the left until coupling pins are clear.
10. Remove the compressor from the front of the unit.
NNoottee:: When the compressor is removed from the unit, note the oil level or measure the oil removed from the
compressor. Add the same amount of oil to the replacement compressor.
11. Remove clutch from compressor crankshaft.
Installation
1. Replace clutch from compressor crankshaft.
2. Lift compressor into the unit and install the mounting bolts.
NNoottee:: The 8-pin compressor drive hub will only slide onto the coupling pins in one of two positions that are 180
degrees apart.
3. Install suction and discharge service valves and torque to the correct value. Coat new o-ring or gasket with
compressor oil. Connect the high pressure cutout switch wires.
4. Reconnect the pilot solenoid valve and compound pressure gauge lines.
5. Pressurise the compressor and test for refrigerant leaks.
6. If no leaks are found, evacuate the compressor. Replace the Combined Motor Generator (CMG) belt and adjust the
tension.
NNoottee:: See (“AC Generator Repair,” p. 30) Steps 1 thru’ 4 in reverse order to refit the CMG Belt.
7. If no leaks are found, evacuate the compressor. Replace the compressor/electric motor belt and adjust the tension).
8. Back seat the suction and discharge service valves.
9. Operate the unit at least 30 minutes and inspect the oil level in the compressor. Add or remove oil if necessary.
10. Check refrigerant charge and add refrigerant if needed.
RReeffrriiggeerraattiioonn SSeerrvviiccee OOppeerraattiioonnss
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