Removing And Installing Alternator; Poly-V Belt Adjusting Procedure - BMW R 1100 S Repair Manual

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Removing and installing alternator

•
Remove seat.
•
Remove side trim.
•
Remove fuel tank.
e
Caution:
Switch off ignition. Disconnect ground (earth) cable
from battery and insulate it.
•
Remove Motronic control unit.
•
[ABS] Remove the pressure modulator.
•
Remove front cover from engine.
•
Disconnect the leads from the alternator.
•
Remove alternator retainers (1, 2, 3).
•
Remove bolt (4) and nut (5).
•
Remove Poly-V belt.
•
Remove the alternator.
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Caution:
Avoid scratching the components; use masking
tape if necessary.
•
Installation is the reverse of the removal proce-
dure.
•
Switch on the ignition.
•
Without starting the engine, fully open the throttle
once or twice so that the Motronic control unit
can register the throttle-valve positions.
12.6
5
L
Note:
Disconnecting the battery deletes all entries (e.g.
faults, settings) stored in the Motronic control unit's
memory.
Loss of settings can temporarily impair the operat-
ing characteristics when the engine is restarted.

Poly-V belt adjusting procedure:

Poly-V belt installation procedure:
•
Place the Poly-V belt in position, tension it and
turn the engine over once, then relieve belt ten-
sion.
Poly-V belt tensioning procedure:
•
Loosen alternator retainers (1, 2, 3).
•
Slightly tighten hex nut (1) on adjusting screw (4)
by hand (do not use tools).
•
Tighten adjusting screw (4) with a torque wrench
and keep preload applied. Tighten upper retain-
ing nut (3), then remove torque wrench from ad-
justing screw.
X
Tightening torque:
Poly-V belt preload......................................... 8 Nm
Alternator
to alternator support cover........................... 20 Nm
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RS110480