Compressor

COMPRESSOR

Service repair no - 82.10.20

Remove

1. Recover refrigerant from air conditioning system. See Adjustments.
2. Disconnect battery earth lead.
3. Raise rear of vehicle.

WARNING: Support on safety stands.

4. Remove alternator. See ELECTRICAL, Repairs.

5. Disconnect multiplug from air conditioning compressor.
6. Remove 2 Allen screws securing air conditioning pipe unions to compressor.
7. Release air conditioning pipe unions from compressor.
8. Remove and discard 2 ’O’ ring seals from pipe unions.

CAUTION: Immediately cap all air conditioning pipes to prevent ingress of dirt and moisture into the system.

9. Remove 3 bolts securing compressor to mounting bracket and collect 2 washers from each bolt.
10. Remove compressor.

Fitting a new compressor

A new compressor is sealed and pressurised with Nitrogen gas, slowly release the sealing cap, gas pressure should be heard to escape as the seal is broken.

NOTE: A NEW compressor should always have its sealing cap in place and must not be removed until immediately prior to fitting.

A NEW compressor is supplied with an oil fill quantity (X cm³) of 170 cm³. A calculated quantity of oil must be drained from a new compressor before fitting.

To calculate the quantity to be drained:

1. Remove the drain plug from the old compressor.
2. Invert compressor and gravity drain the oil into a calibrated measuring cylinder. Rotating the compressor clutch plate will assist complete draining.
3. Note the quantity of oil drained (Y cm³).
4. Calculate the quantity of oil to be drained from the NEW compressor using the following formula:

X cm3 - (Y cm3 + 20 cm3) = Q cm3

5. Remove drain plug from NEW compressor and drain Q cm³ of oil. Fit and tighten compressor drain plug.