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Home >> BMW >> 2016 >> Z4 sDrive35is >> Repair and Diagnosis >> External Pages >> Different car >> Section 378 (Heating And Air Conditioning - Repair) >> 6453 Condenser And Dryer With Lines >> 64 53 521 Replacing safety pressure switch

64 53 521 Replacing safety pressure switch

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WARNING: Risk of injury!
Refrigerant circuit is under high pressure!
Follow safety instructions  See 6450... INSTRUCTIONS FOR HANDLING REFRIGERANT R 134A  or 6450... SAFETY INSTRUCTIONS FOR HANDLING REFRIGERANT R134A  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.
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: 

Disconnect plug connection (1).

Release safety pressure switch (2).

Installation: 

Tightening torque 64 53 14AZ .

Replace sealing ring.

Fig 1: Identifying Safety Pressure Switch With Plug Connection
G06912108Courtesy of BMW OF NORTH AMERICA, INC.

After installation