Procedures

Compressor

Compressor, replacement

Special tools: 999 5474.

WARNING: Follow the appropriate safety precautions when working on the climate control system.

NOTE:
- Read the instructions about slow and large leaks.
- Always use new O-rings lubricated with air conditioning (A/C) compressor oil.
- Always plug pipes and connectors when working on the climate control system.

Preparations







- Disconnect the battery negative lead.
- Drain the refrigerant from the system.
- Remove the splashguard.
- Remove the multi-groove V belt.
- Protect the cooler with 999 5474.

Air conditioning (A/C) compressor removing







- Remove the bolts.
- Disconnect the hoses.
- Seal the openings carefully.







- Disconnect the connector from the compressor.
- Remove the mounting screws.
- Remove the compressor.
- Remove the connector support.

NOTE: If the compressor is replaced, the oil volume must be determined.

- Install new O - rings on the filler plug (lubricate with A/C compressor oil) and tighten to 15 Nm.
- Replace the oil even if the compressor is not replaced.

Installation







- Install the support on the connector.
- Position the compressor. Tighten the bolts to 40 Nm.
- Connect the connector
- Lubricate the new O-rings with compressor oil.
- Install the hose. Tightening torque: 22 Nm

Filling with refrigerant

- Vacuum pump according to Vacuum Pumping.
- Fill the system with refrigerant according to Filling with refrigerant.
- Fill the system with fluorescent tracing agent according to Filling with fluorescent tracing agent.
- Leak trace according to Leak tracing, electronic leak tracer or Leak tracing with fluorescent tracing agent and an UV Lamp.

Installation

- Install the new multi-groove V belt.
- Install the splashguard.
- Check the function.
- Read off diagnostic trouble codes (DTCs) (ECC system).