Expansion Valve: Service and Repair

64 51 525 Removing And Installing Or Replacing Expansion Valve

Special tools required:







WARNING:
Risk of injury.
Refrigerant circuit is under high pressure.
Follow safety instructions for handling R 134a refrigerant.
Avoid contact with refrigerant and refrigerant oil.
Follow safety instructions for handling refrigerant oil.







IMPORTANT:
Risk of damage.
Restart engine only when air conditioning system has been correctly filled.
Follow instructions for opening and replacing parts in refrigerant circuit.
If air conditioning system is opened for more than 24 hours:Replace desiccant insert for A/C system







Necessary preliminary tasks:
- Remove double pipe
- Drain off air conditioning system







Remove gasket (1).

Installation:
Observe direction arrows (2) without fail.
Replace sealing rings.
Use special tool 00 9 030 to mount sealing rings without damaging them.







Release screws (1) and carefully remove expansion valve (2).
Tightening torque 64 53 2AZ.

Installation:
Replace sealing rings.
Use special tool 00 9 030 to mount sealing rings without damaging them.







After installation:
- Evacuate and fill A/C system