Volvo Penta KAD32 Instruction Book page 34

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2. Generator belt
Undo the generator mounting bolts (1) and (2).
Tighten belt using the adjuster screw (3) so the belt
can be depressed approximately 10 mm between the
belt pulleys at (B). Tighten bolts (1) and (2).
3. Compressor belt (32, 43)
Remove the belt cover. Undo the bolt (1) enough so
the belt slackens off. Insert an Allen key in the hole
and turn the belt tensioner counter clockwise so the
belt is correctly tensioned. At the correct belt tension
it should be possible to press the belt in 5 mm at (C).
4. Servo pump belt
Undo the retaining bolt (1). Tighten belt using the ad-
juster screw (2) so the belt can be depressed approx-
imately 10 mm between the belt pulleys at (D).
Tighten bolt (1).
Replacement
Slacken belt off so that it can be removed. Clean off
the pulley grooves. Install the new belt. Adjust as
above. Check belt tension again after a few hours'
operation.