Drive belt, check and change
WARNING!
Stop the engine before doing any maintenance work.
Check belt tensions and condition regularly. A belt that
is tensioned too tightly may damage bearings, while a
belt too-loosely tensioned may slip.
Check and adjust the belt after operation, while the belt
is still warm.
A correctly-tensioned belt should be possible to
depress approx. 10 mm (0.4”) between the pulleys.
IMPORTANT!
Always replace a belt that appears worn or has cracks
(belts that work in pairs must always be changed
together).
Adjusting the drive belt
1 Undo the alternator retaining bolts (1-2).
2 Using the adjuster screw (3), adjust the belt to the
correct tension.
3 Tighten the bolts (1-2) and check the tension.
Replacing the drive belt
1 Undo the alternator retaining bolts (1 and 2).
2 Press the alternator toward the engine block so
that the belt can be removed. Wipe clean the belt
grooves
3 Install the new belt. Adjust.
4 Check the belt tension again after a few hours'
operations.
IMPORTANT!
D1-30, D2-40: Ensure that the alternator belt is placed
in the groove closest to the alternator.
3
1
2
10mm
PREHEAT
START
BATT
P0007520
D1-30 and D2-40
Maintenance
47711262 01-2019 © AB VOLVO PENTA 53
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