Compressor HVAC: Service and Repair
AIR CONDITIONING (A/C) COMPRESSORSpecial Tool(s):
SPECIAL TOOL(S)
CAUTION: If installing a new air conditioning compressor due to an internal failure of the old unit, you must carry out the following procedures to remove contamination from the air conditioning system.
- If A/C flushing equipment is available, carry out flushing of the air conditioning system prior to installing a new air conditioning compressor.
- If A/C flushing equipment is not available, carry out filtering of the air conditioning system after a new air conditioning compressor has been installed.
- Install a new thermostatic expansion valve, as directed by the A/C flushing or filtering procedure.
- Install a new receiver drier as directed by the A/C flushing or filtering procedure.
NOTE:
- Installation of a new receiver drier is not required when repairing the air conditioning system except when there is physical evidence of system contamination from a failed A/C compressor or damage to the receiver drier.
- New O-ring seals, lubricated in clean PAG oil, must be installed before reconnecting any A/C fitting that has been disconnected.
REMOVAL
1. Recover the refrigerant.
2. Remove the drive belt from the A/C compressor pulley.
Illustration 1 Of 2:
3. Illustration 1 of 2. Remove the components in the order indicated in the illustration and table.
Illustration 2 Of 2:
4. Illustration 2 of 2. Remove the component in the order indicated in the illustration and table.
Item 6: A/C Clutch Nut Removal Note
1. Remove the A/C clutch nut.
1 Using the special tool, hold the clutch plate.
2 Remove the nut.
Item 10: A/C Clutch Pulley Removal Note
1. CAUTION: Do not use air tools. Damage to the A/C clutch pulley or A/C compressor may result.
Using the special tool, remove the A/C clutch pulley.
Item 12: A/C Clutch Field Coil Removal Note
1. NOTE: Apply a pea-sized drop of silicone sealant to the thermal limiter socket before installing the thermal limiter into the A/C compressor. Failure to use the approved sealant listed in the materials table may affect the function of the switch.
Remove the thermal limiter.
1 Remove the bolt and the hold-down bracket.
2 Remove the thermal limiter.
INSTALLATION
1. To install, reverse the removal procedure.
2. If filtering of the refrigerant system is not to be carried out, lubricate the refrigerant system with the correct amount of clean PAG oil.
3. If filtering of the refrigerant system is not to be carried out, evacuate, leak test and charge the refrigerant system.