64 52 521 Replacing A/C compressor (N55)

Special tools required:

WARNING: Follow all applicable SAFETY INFORMATION .

IMPORTANT:

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

If air conditioning system is opened for more than 24 hours: Replace CONDENSER (includes dessicant insert).

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

Necessary preliminary work:

Disconnect plug connection (1).

Release screws (2) and remove refrigerant line.

Tightening torque 64 52 1AZ .

Installation note:

Replace sealing rings.

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

Fig 1: Identifying Plug Connection And Screws

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

IMPORTANT: Secure compressor (1) against falling out.

Release screws (2) and remove compressor (2) by pulling upwards.

Tightening torque 64 52 3AZ .

Fig 2: Identifying Compressor Screws

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IMPORTANT:

Danger of compressor damage!

Danger 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:

If necessary, release screws (1) and modify holder (2).

Fig 3: Identifying Holder And Screws

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After installation: