64 51 591 Replacing evaporator

Special tools required: 

• 00 9 030

Necessary preliminary tasks:

• Remove HEATING AND AIR CONDITIONING UNIT 

Pull temperature sensor (1) out of housing (2).

Feed out associated cable from housing (2).

Installation note: 

Ensure correct cable routing.

Fig 1: Identifying Temperature Sensor And Housing

Courtesy of BMW OF NORTH AMERICA, INC.

Unlock plug connections (1) and (2) and disconnect.

Feed out associated cable from housing (3).

Installation note: 

Ensure correct cable routing.

Fig 2: Identifying Plug Connections And Housing

Courtesy of BMW OF NORTH AMERICA, INC.

Release screws (1).

Fig 3: Identifying Housing Screw

Courtesy of BMW OF NORTH AMERICA, INC.

Release screws (1) and remove expansion valve (2).

Tightening torque 64 53 2AZ .

Installation note: 

Ensure that seals are correctly seated.

Replace sealing rings.

Use special tool 00 9 030 to install sealing rings without damaging them.

Fig 4: Identifying Expansion Valve And Screw

Courtesy of BMW OF NORTH AMERICA, INC.

Release screws (1) and carefully remove upper housing section (2).

Fig 5: Identifying Upper Housing Section And Screw

Courtesy of BMW OF NORTH AMERICA, INC.

Remove evaporator (1).

Fig 6: Identifying Evaporator

Courtesy of BMW OF NORTH AMERICA, INC.

After installation:

• EVACUATE AND FILL A/C SYSTEM 
• FILL AND VENT COOLING SYSTEM