64 52 524 Removing and installing/replacing heating and air conditioning system compressor (N63, with Dynamic Drive)

Special tools required: 

• 00 9 030
• 32 1 270

Follow safety information for handling  See 64 50... INSTRUCTIONS FOR HANDLING R 134A REFRIGERANT  or 64 50... SAFETY INFORMATIONS FOR HANDLING TETRAFLUORETHANE REFRIGERANT R134A  R134a tetrafluorethane refrigerant.

Avoid contact with refrigerant and refrigerant fluid.

Follow safety information HANDLING  refrigerant fluid.

Read and comply with NOTES  on replacing compressor.

Follow INSTRUCTIONS  for opening and replacing parts in refrigerant circuit.

If air conditioning system is opened for more than 24 hours:

Replace DESICCANT INSERT FOR HEATING AND AIR CONDITIONING SYSTEM 

DANGER OF INJURY if oil comes into contact with eyes and skin!

Do not draw off hydraulic fluid (risk of contamination).

Seal off line connections with special tool 32 1 270 .

Recycling 

Catch and dispose of hydraulic fluid in a suitable expansion tank.

Necessary preliminary work 

• DRAWING OFF, EVACUATING AND FILLING THE HEATING AND AIR CONDITIONING SYSTEM  are not included in the time value given for this job item
• Remove air conditioning compressor drive belt. See COMPRESSOR DRIVE BELT .
• Remove FRONT RIGHT WHEEL ARCH COVER .
• Remove STEERING ASSEMBLY COVER .

Release screw (1) on ARS/AFS return line (2).

Tightening torque 32 41 19AZ .

Unscrew nut (3).

Turn ARS and AFS return line (2) out of working area to one side.

Fig 1: Identifying ARS And AFS Return Line, Nut And Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Release screw (1).

Unfasten screws (2).

Tightening torque 37 11 2AZ .

Carefully lower active anti-roll bar (3).

Fig 2: Identifying Lower Active Anti-Roll Bar And Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Slacken nut (1).

Take off holder (2).

Take ARS expandable hose (3) out of working area and tie up.

Fig 3: Identifying ARS Expandable Hose, Holder And Nut

Courtesy of BMW OF NORTH AMERICA, INC.

Release screws (1).

Tightening torque 37 13 11AZ .

Release screw (2) on holder.

Take ARS expandable hose (3) out of working area and tie up.

Fig 4: Identifying ARS Expandable Hose And Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Tie up ARS expansion hoses (1) as described in previous operations.

Cover cooling fins with aluminium sheet (2) or similar material.

This prevents the cooling fins from being damaged when the compressor is removed later.

Fig 5: Identifying ARS Expansion Hoses And Aluminium Sheet

Courtesy of BMW OF NORTH AMERICA, INC.

For purposes of clarity, the compressor is shown without the surrounding assemblies!

Release screws (1).

Tightening torque 64 52 03AZ .

Fig 6: Identifying Lower Anti-Roll Bar Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Secure compressor (5) against falling.

Release screws (1).

Tightening torque 64 52 03AZ .

Disconnect plug connection (2).

Lower compressor (5).

Release screws (3) and (4) and remove refrigerant lines.

Tightening torque 64 52 01AZ .

Installation note: 

Replace sealing rings.

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

Fig 7: Identifying Compressor, Plug Connection And Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Have another person pull the radiator forward.

Carefully feed out compressor upwards.

After Installation note: 

• EVACUATE AND FILL HEATING AND AIR CONDITIONING SYSTEM 
• Check line connections for tightness
• BLEED HYDRAULIC STEERING .
• START-UP with test run of Dynamic Drive.