Replacing the air conditioning compressor on BMW engines M50, M52
52 520 64
Remove the protection panel auxiliary motor mechanisms.
see. 51 47 490
Recover the refrigerant from the air conditioner,
see. 64 50 009
or manual installation of the corresponding service.
If necessary, replace the dehumidifier reservoir,
see. 64 53 510
Loosen the belt tension.
Insert the Allen key in tensioning roller screw and turn slowly clockwise. This chain tensioner is compressed and the belt loosens.
Location of the drive belt.
When installing the drive belt to compress the chain tensioner again and wear the belt. Ensure the correct position of the belt in the grooves.
Release screws, detach the suction and discharge piping.
Release screws, disconnect the connector and remove the compressor downwards.
Drain the oil from the remnants of the refrigerator compressor and pour the oil in a measuring jug. Pour back the refrigerator oil from the filling station and to measure the total amount.
Refrigerator oil from the air conditioner and compressor of the old no longer use, and dispose of.
Clean the measuring vessel.
Drain all the oil from the new compressor, collect it and pour into the compressor previously only measured the number of refrigerator oil.
Balance new refrigerator oil can be poured into the tank installation service. Otherwise, the refrigerator oil must be disposed of. Do not store refrigerator oil in open containers because it is very hygroscopic.