64 51 525 Removing and installing or replacing expansion valve
WARNING: This page is about a different car, the 2010 BMW M3, 2009 BMW M3, and 2008 BMW M3. However, it is still accessible from the selected car via links, so may be relevant.
WARNING:
Risk of injury!
Refrigerant circuit is under high pressure!
Follow safety instructions for handling R134a refrigerant .
Avoid contact with refrigerant and refrigerant oil.
Follow safety instructions for handling refrigerant oil .
Refrigerant circuit is under high pressure!
Follow safety instructions for handling R134a refrigerant .
Avoid contact with refrigerant and refrigerant oil.
Follow safety instructions for handling refrigerant oil .
IMPORTANT:
Risk of damage!
Restart engine only when A/C system has been correctly filled.
Follow instructions 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
Restart engine only when A/C system has been correctly filled.
Follow instructions 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
Necessary preliminary tasks:
- Drawing off, evacuating and filling the A/C system are not included in the time value given for this work operation
- Remove lower section of microfilter housing
- Remove left suspension cross-brace . See 51 71 345 REMOVING AND INSTALLING/REPLACING LEFT (OR RIGHT) SUSPENSION CROSS-BRACE .
NOTE:
Work described on the E90 by way of example, deviations in detail are possible in other vehicles.
Release screws (1, 2), disconnect refrigerant lines and lay to one side.
Installation:
Replace all sealing rings and moisten with refrigerant oil.
Tightening torque 64 53 2AZ , see 64 53 REFRIGERANT LINES AND EXPANSION VALVE .
Release screws (1) and remove expansion valve (2).
Installation:
Replace all sealing rings and moisten with refrigerant oil.
Tightening torque 64 53 13AZ , see 64 53 REFRIGERANT LINES AND EXPANSION VALVE .
Installation:
Place expansion valve (1) exactly on refrigerant lines (2) and (3).
Fit screws of expansion valve (1) and make sure retainer (4) is correctly positioned.
After installation: