64 52 523 Replacing air conditioning system compressor (vehicles with N54 or N55 engine)

WARNING: This page does not describe the selected car, but rather 31 other vehicles, including the 2015 BMW Alpina B7L, 2015 BMW Alpina B7, 2015 BMW 750i, 2015 BMW 750Li, and 2015 BMW 740i. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

WARNING:

Danger of injury!

Refrigerant circuit is under high pressure!

Avoid contact with refrigerant and refrigerant oil.

Read and comply with SAFETY INSTRUCTIONS

IMPORTANT:

Risk of damage!

Restart engine only when A/C system has been correctly filled.

Read and comply with NOTES on compressor replacement.

Follow notes for OPENING AND REPLACING PARTS IN REFRIGERANT CIRCUIT .

If Air conditioning is opened for more than 24 hours:

Replace DESICCANT INSERT for air conditioning system.

Necessary preliminary work:

IMPORTANT: Seal openings or lines on compressor with special tool 32 1 270 to prevent escape of media and dirt contamination.

Release screws (1) and remove refrigerant lines.

Tightening torque: 64 52 1AZ

Installation note:

Replace sealing rings.

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

Unfasten plug connection (2) and disconnect.

Fig 1: Locating Screws And Connector

Courtesy of BMW OF NORTH AMERICA, INC.

Release screw (1).

Tightening torque: 64 52 3AZ

Fig 2: Locating Screw

Courtesy of BMW OF NORTH AMERICA, INC.

Release screw (1).

Tightening torque: 64 52 3AZ

Fig 3: Locating Screw

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: Seal openings or lines on compressor with special plug tool 32 1 270 to prevent escape of media and dirt contamination.

NOTE: Secure compressor (2) against falling off/down.

Release bolt (1) and lift out compressor (2).

Tightening torque: 64 52 3AZ

Fig 4: Identifying Compressor And Bolt

Courtesy of BMW OF NORTH AMERICA, INC.

Installation note:

Fitting sleeves (1) must not be damaged.

Replace damaged fitting sleeves.

Fig 5: Locating Fitting Sleeves

Courtesy of BMW OF NORTH AMERICA, INC.

Replacement:

Adjust the amount of REFRIGERANT OIL in the new compressor

IMPORTANT:

Risk of compressor damage!

Risk of customer complaints due to reduced cooling power of the Air conditioning!

Before the installation of the new compressor, it is absolutely necessary to adjust the amount of refrigerant oil in the new compressor!

Compliance with SAFETY INFORMATION is mandatory!

After installation:

EVACUATE AND FILL AIR CONDITIONING SYSTEM