Necessary preliminary work:
Release connector (1) and remove.
Slacken nut (2).
Disconnect positive battery cable from alternator.
Slacken nut (1).
Remove cover from idler pulley and undo bolt (1) beneath it.
Remove idler pulley.
Release screws (1).
Feed out alternator upwards and remove.
NOTE: Check stored fault messages.
Delete fault memory.
BMW X3 Service & Repair Manual > Compressor: (removing and installing) Replacing a/c system compressor (N47N)
Special tools required:
32 1 270
WARNING: Danger of injury!
Refrigerant circuit is under high pressure!
Observe the safety information for handling the R 134a refrigerant .
Avoid contact with refrigerant and refrigerant fluid.
FOLLOW SAFETY INSTRUCTIONS FOR HANDLING REFRIGERANT OIL !
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