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Home >> BMW >> 2009 >> 650i 2D Convertible, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 1678 (Heating And Air Conditioning - Repair) >> Ac Housing/Evaporator, Switching Elements >> 64 51 525 Removing and installing or replacing expansion valve

64 51 525 Removing and installing or replacing expansion valve

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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 A/C system has been correctly filled.
Read and comply with notes on replacing compressor.
Follow instructions  for opening and replacing parts in refrigerant circuit.
If A/C system is opened for more than 24 hours:
Replace drier insert  for A/C system

Necessary preliminary tasks: 

Feed out rubber grommet (1).

Installation: 

Make sure rubber grommet (1) is correctly seated.

Slacken nut (2).

Installation: 

Tightening torque, 64 53 7AZ.  See 53 CONDENSER AND DRYER .

Detach refrigerant lines (3) and (4) in direction of arrow.

Installation: 

Replace sealing rings and moisten with refrigerant oil.

Fig 1: Identifying Rubber Grommet, Refrigerant Lines And Screw
G04761866Courtesy of BMW OF NORTH AMERICA, INC.

Release screws (1).

Installation: 

Tightening torque, 64 53 9AZ.  See 53 CONDENSER AND DRYER .

Detach expansion valve (2) in direction of arrow.

Installation: 

Replace sealing rings and moisten with refrigerant oil.

Make sure soundproofing (3) is correctly seated.

Fig 2: Detaching Expansion Valve
G04761867Courtesy of BMW OF NORTH AMERICA, INC.

After installation: