Alternator. Removing And Installing (6-Cylinder Engine) - BMW 5251 Service Manual

Battery, Starter, ~lternatorl
Alternator, removing and installing
(6-cylinder engine)
A replacement alternator should have the same rating as the
original. Alternator manufacturer and ampere rating are nor-
mally marked on the alternator housing.
-
Disconnect negative (-) battery cable.
CAUTION-
Prior to disconnecting the batteg read the battery discon-
nection cautions given in 001 General Warnings and Cau-
I
tions.
Remove complete air filter housing:
Loosen intake duct hose clamp (A) at throttle assembly.
Loosen clamp and remove idle control hose from intake
duct (B) and disconnect idle speed control valve electrical
harness connector.
Disconnect electrical harness connector ( C ) from mass air
flow sensor.
*
Remove air filter housing mounting screw (D),
Disconnect vent tube (E).
Loosen air intake duct clamp (F).
Carefully lifl air filter housing out of engine bay.
Remove alternator drive belt. See belt removal procedures in
020 Maintenance.
-
Remove radiator cooling fan and fan shroud. See 170 Radi-
ator and Cooling System.
NOTE-
The radiator cooling fan nut (32 mm wrench) has left-hand
threads.
-
Unbolt power steering fluid reservoir and bracket. Suspend to
one side without detaching fluid hoses.
-
Disconnect alternator air cooling tube.
-
Disconnect wiring from rear of alternator.
'4
Remove upper and lower mounting bolts (arrows) and lift
alternator.
If idler pulley for belt interferes, remove pulley cover and
retaining bolt to remove pulley.
out