Compressor Clutch: Service and Repair

Magnetic clutch compressor, replacing

Special tools:
999 7193 Counterhold 999 7193 Counterhold

Note! The illustrations in this service information are used for different model years and/or models. Some variation may occur. However, the essential information in the illustrations is always correct.

Preparatory work

Removing the compressor

Warning! Follow the safety instructions for work on air conditioning systems. See: Refrigerant, safety regulations Technician Safety Information.

Read the instructions covering slow and fast leaks. See: Oil Air Conditioning (A/C) System, Filling

Caution! When replacing a compressor, always replace the O-rings in the pipes and quick-release connectors.

Note! Always plug the pipes and connections when working on the climate control system.

Remove the compressor. See Compressor, replacing, B8444S Service and Repair.

Removal

Removing the drive plate




Remove the screw for the drive plate. Use: 999 7193 Counterhold 999 7193 Counterhold.
Remove the drive plate by pulling it straight out.

Note! Ensure that the shims between the compressor shaft and the drive plate do not come off.

Removing the pulley





Remove:
- the snap ring
- the pulley.

Removing the magnetic coil and cable

Note! Note the position of the solenoid coil cable in relation to the compressor housing.





Remove:
- the snap ring for the solenoid coil. See the illustration
- the solenoid coil
- the screw for the electrical cable for the solenoid coil
- the connector for the solenoid coil.

Installation

Installing the solenoid coil and the electrical cable





Install:
- the solenoid coil as noted previously
- the snap ring for the solenoid coil. See the illustration
- the connector for the solenoid coil
- the screw for the electrical cable for the solenoid coil.

Installing the pulley





Install:
- a new pulley
- the snap ring for the pulley.

Installing the drive plate




Use: 999 7193 Counterhold 999 7193 Counterhold Install the drive plate using the 1x screw. Tighten.

Finishing

Checking clearance
Use a feeler gauge. Check the clearance between the turntable and the pulley. Measure at several points around the turntable.
The clearance must be between 0.3 and 0.6 mm. Replace the shims if the clearance does not lie within the given values.

Installing the compressor
Install the compressor. See: Compressor, replacing, B8444S Service and Repair.
Check the function.