64 53 701 Replacing Line From Evaporator To Condenser (N52K)

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2013 BMW 128i, 2012 BMW 128i, 2011 BMW 128i, 2010 BMW 128i, and 2009 BMW 128i. 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 R 134a refrigerant . See 64 50... Instructions For Handling Refrigerant R134a and/or 64 50... Safety Instructions For Handling Refrigerant R134A .

Avoid contact with refrigerant and refrigerant oil.

Follow safety instructions for handling refrigerant oil . See 64 50... 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. See 64 52... 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 . Refer to 64 53 515 Replacing 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. See 64 50 009 Drawing Off, Evacuating And Filling A/C System (R134A)
Partially detach expansion tank and place to one side.
Remove microfilter housing . Refer to 64 31 092 Removing And Installing/Replacing Microfilter Housing (Lower Section) .
Remove both tension struts from spring strut dome . Refer to 51 71 371 REMOVING AND INSTALLING/REPLACING TENSION STRUT ON LEFT OR RIGHT SPRING STRUT DOME (Coupe) and/or 51 71 371 REMOVING AND INSTALLING/REPLACING TENSION STRUT ON LEFT OR RIGHT SPRING STRUT DOME (Convertible).

Release screws (1) and remove refrigerant line.

Installation:

Replace sealing rings and moisten with refrigerant oil.

Fig 1: Identifying Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Tightening torque, see 64 53 2AZ in 64 53 REFRIGERANT LINES AND EXPANSION VALVE .

Expose refrigerant line up to connection on condenser.

Release screw (1) and remove refrigerant line (2).

Installation:

Replace sealing rings and moisten with refrigerant oil.

Fig 2: Identifying Refrigerant Line & Screw

Courtesy of BMW OF NORTH AMERICA, INC.

Tightening torque, see 64 53 6AZ in 64 53 REFRIGERANT LINES AND EXPANSION VALVE .

Replacement:

Modify safety pressure switch . See 64 53 520 Replacing Safety Pressure Switch .

After installation:

Evacuate and fill A/C system . Refer to 64 50 009 Drawing Off, Evacuating And Filling A/C System (R134A) .