Removing And Installing Alternator; Poly-V Belt Adjusting Procedure - BMW R 1150 R Repair Manual

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Removing and installing
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alternator
•
Remove the seat.
•
Remove fuel tank ( 16.5).
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Attention:
Disconnect earth (ground) lead from battery. Insu-
late earth (ground) lead.
•
Remove Motronic control unit.
•
Remove the horn.
•
Remove spring strut.
•
Remove front cover from engine.
•
Remove alternator mount cover.
•
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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Attention:
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)
•
Preload 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 and tighten screws.
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Tightening torque:
Preload for Poly-V belt ................................... 8 Nm
Alternator
to alternator mount cover ............................. 20 Nm
Positive cable to alternator ........................... 15 Nm
Belt pulley to alternator ................................ 50 Nm
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RS110480