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

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.

WARNING: Danger of injury!

Refrigerant circuit is under high pressure!

Avoid contact with refrigerant and refrigerant fluid.

Danger of injury!

Refrigerant circuit is under high pressure!

Avoid contact with refrigerant and refrigerant fluid.

Read and comply with SAFETY INFORMATION .

IMPORTANT: Risk of damage!

Restart engine only when air conditioning 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 system is opened for more than 24 hours:

Replace DESICCANT INSERT FOR HEATING AND AIR CONDITIONING SYSTEM

WARNING: DANGER OF POISONING if oil is ingested/absorbed through the skin!

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

IMPORTANT: Adhere to the utmost cleanliness. Do not allow any dirt to enter the hydraulic system.

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.

IMPORTANT: Pressure line and connections of hydraulic system must be provided with suitable seal plugs 32 1 270 immediately after dismantling.

Necessary preliminary work:

DRAW OFF/EVACUATE the heating and air conditioning system
Remove air conditioning COMPRESSOR DRIVE BELT
Remove FRONT RIGHT WHEEL ARCH COVER
Remove STEERING ASSEMBLY COVER

NOTE: The following operations are required to improve accessibility to the compressor.

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/AFS Return Line And Screw

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

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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 And Slacken 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.

NOTE: The following operations describe how to remove the heating and air conditioning system compressor.

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

Release screws (1).

Tightening torque 64 52 3AZ .

Fig 6: Identifying Compressor Screws

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

Secure compressor (5) against falling.

Release screws (1).

Tightening torque 64 52 3AZ .

Disconnect plug connection (2).

Lower compressor (5).

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

Tightening torque 64 52 1AZ .

Installation note:

Replace sealing rings.

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

Fig 7: Identifying Refrigerant Lines, Compressor And Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Have another person pull the radiator forward.

Carefully feed out compressor upwards.

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 the heating and air conditioning system
Check line connections for tightness
BLEED HYDRAULIC STEERING
START-UP with test run of Dynamic Drive