Replacing A/C System Compressor (N62)

64 52 524 - Replacing A/C system compressor (N62)





Special tools required:
- 32 1 270 32 1 270 Plugs (Set)





Warning!
Risk of injury!

Follow safety instructions for handling R 134a refrigerant.

Avoid contact with refrigerant and refrigerant oil.

Follow safety instructions for handling refrigerant oil Instructions for Handling Refrigerant Oil (for Refrigerant R 134a).





Important!
Risk of damage!

Restart engine only when A/C system has been correctly filled.

Read and comply with notes on replacing compressor. Instructions For Compressor Replacement

Follow instructions Removal and Replacement for opening and replacing parts in refrigerant circuit!

If A/C system is opened for more than 24 hours:

Replace desiccant insert for A/C system Replacing Desiccant Insert for A/C System (Condenser Removed)





Necessary preliminary tasks:
- Drawing off, evacuating and filling the A/C system Drawing off, Evacuating and Filling A/C System (R 134a) are not included in the time value given for this work operation
- Remove front assembly underside protection Removing and Installing/Replacing Front Underbody Protection
- Remove A/C compressor drive belt Replacing A/C Compressor Drive Belt
- Release stabilizer Removing and Installing/Replacing Front Stabilizer on front axle





Important!
Do not place front panel centre section (2) on jump start terminals.

Do not kink Bowden cables for engine hood locking.

Release bolts (1).

Remove front panel centre section (2) in direction of arrow and place to one side.





Release screws (1) and feed out refrigerant lines (2).

Tightening torque 64 53 6AZ [1][2]Expansion Valve.





Release screw (1) and disconnect coolant line connection.

Installation Note:
Replace all sealing rings and moisten with refrigerant oil.

Tightening torque 64 53 6AZ [1][2]Expansion Valve.





Release bolt (1) and remove bracket for oil lines (2).

Tightening torque 32 41 17AZ Pump and Oil Supply.





Important!
Seal openings or lines on compressor with special tool 32 1 270 32 1 270 Plugs (Set) to prevent escape of media and fouling.





Important!
Secure compressor (1) against falling out.

Disconnect plug connection (2).

Release screw and nut (3).

Release bolts (4) and feed out compressor (1) downwards with refrigerant lines.

Tightening torque 64 52 3AZ Specifications.





Adapter sleeves (1) must not be damaged.

Replace damaged adapter sleeves.





After installation:

- Evacuate and fill A/C system Drawing off, Evacuating and Filling A/C System (R 134a)





Replacement:

Release screws (1) and remove refrigerant lines.

Installation Note:
Replace all sealing rings and moisten with refrigerant oil.

Tightening torque 64 52 1AZ Specifications.