Note: Disconnect the car's battery before starting the procedure.
Tools and Materials:
- New AC compressor and AC compressor clutch
- AC manifold gauge set
- Recovery tank and vacuum pump (for recovering and recharging the refrigerant)
- Socket wrench set
- Allen wrench set
- Flat-blade screwdriver
- Metric wrenches
- Safety goggles
- Gloves
Procedure:
1. Refrigerant Recovery:
- Attach the manifold gauge set to the AC system according to the manufacturer's instructions.
- Start the engine and turn on the AC to maximum.
- Open the low-pressure port valve on the manifold gauge set to allow refrigerant recovery into the recovery tank.
- Once the system pressure drops close to zero, turn off the engine.
2. Compressor Removal:
- Locate the AC compressor in the engine bay.
- Disconnect the electrical connector from the compressor.
- Remove the serpentine belt by loosening the belt tensioner.
- Remove the AC lines from the compressor by loosening the fittings. Make sure to cap the lines to prevent refrigerant and oil leakage.
3. Compressor Bracket Removal:
- Remove the mounting bolts/screws that hold the compressor bracket in place.
- Carefully lift the compressor bracket with the compressor attached from the engine bay.
4. Compressor Clutch Replacement:
- Use an Allen wrench to loosen the bolt holding the compressor clutch to the compressor shaft.
- Remove the clutch and inspect it. Replace it if necessary.
5. Compressor Replacement:
- Clean the compressor mounting area on the bracket if needed.
- Install the new AC compressor onto the bracket. Tighten the mounting bolts.
- Reattach the serpentine belt and tighten the tensioner.
- Connect the electrical connector to the compressor.
6. Compressor Bracket Installation:
- Carefully lift the compressor bracket with the attached compressor into the engine bay.
- Secure the compressor bracket with the mounting bolts/screws.
7. Refrigerant Recharging:
- Use a vacuum pump to remove any remaining air and moisture from the AC system.
- Connect the recovery tank to the low-pressure port on the manifold gauge set and open the valve to recharge the system with the recovered refrigerant.
- Ensure that the system pressure reaches the recommended level as specified in your Jaguar XK8 service manual.
8. System Leak Test:
- Once the system is recharged, perform a leak test to check for any leaks in the system.
9. System Performance Check:
- Start the engine and turn on the AC. Check that the AC is blowing cold air and that the compressor clutch is engaging properly.
10. Reconnect Battery:
- Reconnect the car's battery.
Once you have completed these steps, the AC compressor in your 2000 Jaguar XK8 should be successfully replaced. Test the AC system to ensure proper functionality and consult your vehicle's service manual for any additional guidelines.
