V-belt tensioning and renewal 79
Check V-belt tension every 15000 km
(10000 miles) during a BMW lnspection.
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the center of the run between the two
pulleys.
1 Alternatorv-belt
2 High pressurevanetype pump v-belt
3 #girrecsoso:rd¥#i'iàf,or cars equipped
Correcting V-belt tension:
V-belt 1
Loosen the upper and lower alternator
retaining bolts (13 mm wrench) and move
the alternator on its tensioning strap until
V-belt tension is correct.
V-belt 2
Loosen the two bolts (13 mm wrench)
holding the high pressure vane type
pump and move the pump housing along
its slot until V-belt tension is correct.
Ftenewlng V-belts:
V-belt 1
First remove V-belts 2 and 3.
Loosen upper and lower alternator
retaining bolts (13 mm wrench) and
swing the alternator over as close to the
engine block as possible. Pass the new
V-belt over the vibration damper, fan
pulley and alternator pulley, and tension
correctly.
V-belt 2
First remove V-belt 3 (if fitted).
Loosen the high pressure vane type
pump retaining bolts (13 mm wrench)
and move the pump as close as possìble
to the alternator. Pass the new V-belt
over the crankshaft and pump pulleys,
and ten§ion correctly.
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