Compressor Oil - Topping Up and Adjusting For R134a

To Remove

Important : Both the desiccant container and compressor oil in the R134a system absorb water from the air, which cannot then be removed. For this reason, all connections which are opened must be immediately plugged.

Important : Cars with 2.0 liter engines and R134a refrigerant up to chassis number N1034330 may have the less strong compressor bracket with part number 42 79 345, which should be changed for bracket part number 4357067 when working on the A/C. When doing this, it is only necessary to change bolt part number 7982119.

1 Empty the refrigerant from the A/C system, see "Refrigerant".
2 Move the servo oil container to one side.
3 Install clamp 83 94 488 to the multi V belt.
4 Where appropriate, install a protector over the oil cooler.







5 Undo the high-pressure hose connection on the compressor. Plug connections.
6 Undo the low-pressure hose connection on the compressor. Plug connections.
7 Unplug the compressor connector.
8 Remove the compressor retaining screws and lift the compressor away.







To Install

Important : Both the desiccant container and the compressor oil in the R134a system absorb water from the air, which cannot then be removed. For this reason, any connections which are open should be immediately plugged.

1 Check oil level. "Refrigerant".
2 Place the compressor in position and do up the three retaining screws. Note that the bracket for the electrical connection is secured with the upper right-hand screw.

Tightening torque: 22.5 Nm (16.6 lbf ft)

3 Connect the compressor's electrical connector and press it into the holder.
4 Lubricate two new O-rings using synthetic Vaseline, part number (16) 30 15 286. Remove the plugs, and place the new O-rings in position.
5 Screw the low-pressure and high-pressure hoses to the compressor.

Tightening torque: 10 Nm (7.4 lbf ft)







6 Remove the protector from the oil cooler.
7 Remove the clamp and reinstall the multi V belt.
8 Reinstall the servo oil container.
9 Fill the A/C system with refrigerant, see "Refrigerant".