Compressor HVAC: Service and Repair

NOTES FOR NEW COMPRESSOR INSTALLATION
The new compressor is filled with 15O cc (5.0 fl.oz.) of compressor oil and nitrogen gas. When mounting the compressor on the vehicle, perform the following steps;




1. Gently release nitrogen gas from the suction side of the new compressor.
- Take care not to let the compressor oil flow out.
- Inspect O-rings and replace if necessary.
2. Turn the compressor several times by hand and release the compressor oil in the rotor.
3. When installing on a new system, the compressor should be installed as it is. When installing on a used system, the compressor should be installed after adjusting the amount of compressor oil.

COMPRESSOR





Preparation:
Disconnect the battery ground cable Discharge and recover refrigerant.

REMOVAL
1. Magnetic clutch harness connector
2. Radiator fan shroud
3. Radiator fan
- When the fan is removed, be sure to tighten the fan fixing nuts temporarily to their original positions.




4. Drive belt
- Loosen idle pulley center nut and tension adjustment bolt, then remove the drive belt.
5. Refrigerant line connector
When removing the line connector, the connecting part should immediately be plugged or capped to prevent foreign matter from being mixed into the line.
6. Compressor

INSTALLATION
6. Compressor
- Tighten the compressor fixing bolts to the specified torque.
Torque: 19 N.m (14 lb.ft)
5. Refrigerant line connector
- Tighten the refrigerant line connector fixing bolts to the specified torque.
Torque: 15 N.m (11 lb.ft)
- O-rings cannot be reused. Always replace with new ones.
- Be sure to apply new compressor oil to the O-rings when connecting refrigerant lines.
4. Drive belt




- Push the drive belt with the force of 22 lbs., and adjust the drive belt tension by tightening idle pulley tension adjustment bolt, until the 10 mm (0.4 in) deflection of the belt is obtained. Then tighten the pulley center nut
Torque 42 N.m (31 lb.ft)
3. Radiator fan
2. Radiator fan shroud
1. Magnetic clutch harness connector