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Home >> BMW >> 2007 >> 335i 2D Convertible, Standard >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 5 (Heating And Air Conditioning - Repair - E90/E91) >> 53 condenser and dryer with Lines >> 64 53 520 Replacing safety pressure switch

64 53 520 Replacing safety pressure switch

WARNING: This page is about a different variant/trim than selected.
WARNING: Avoid contact with refrigerant and refrigerant oil.

Follow safety Instructions For Handling Refrigerant R 134A. 

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 !

NOTE: If A/C system is opened for more than 24 hours: Replace Desiccant Insert For A/C System 

Necessary preliminary tasks: 

NOTE: The time value given for this work operation does not include drawing off, evacuating and filling the A/C system!

Release screws (1) and bend thermal insulation (2) to one side.

Fig 1: Identifying Thermal Insulation And Mounting Screws
G04727901Courtesy of BMW OF NORTH AMERICA, INC.

Disconnect plug connection (1).

Release safety pressure switch (2), for tightening torque refer to 64 53 14AZ in 64 53 REFRIGERANT LINES AND EXPANSION VALVE .

Fig 2: Identifying Plug Connection And Safety Pressure Switch
G04727902Courtesy of BMW OF NORTH AMERICA, INC.

After installation: