FREON
The refrigerant Freon R12 is used in most BMW automobiles with an air
conditioner up through the 1992
model year. It has a boiling point of - 29.8ºC (sea level), at which the
refrigerant is t
OIL USED IN FREON-CHARGED SYSTEMS
A mineral-based oil is used. The oil level in the compressor must be checked
before filling an air conditioner
with refrigerant. It can be checked only if the system
A musty odor may be detected in the vehicle, particularly when the air
conditioner is first switched on.
This is caused by microorganisms growing on the evaporator from moisture
condensation.
A di
(cylinder bank 1 to 4)
Necessary preliminary tasks:
Remove servomotor for right eccentric shaft.
Remove ignition coils on cylinder bank 1 to 4.
Remove right cylinder head cover.
Remove spark plugs on cylinder bank 1 to 4.
Remove right inlet and exhaust adjustment units.
Remove slide rail (1)
Special tools required:
11 4 281
11 4 481
IMPORTANT: Aluminium screws/bolts must be replaced each time they
are released.
The end faces of aluminium screws/bolts are painted blue for the purposes of
reliable identification.
Jointing torque and angle of rotation must be observed without fail (