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Maintenance measures - 500 / 2500 / 3500 / 4500 / 5500 / 6500 /
B
C
Fig. Diesel engine -
D1703 (Tier 4f / Stage V)
1. Belt
2. Bolt and nut
3. Deflection
2
Fig. Drum, drive side
1. Rubber element
2. Attachment screws
2023-05-26
Replacing belts/Checking the belt tension
1
2
To check the belt tension, apply a moderate pressure
with your thumb on the belt (between the belt pulleys
on the alternator and crankshaft).
The deflection (3) must be in position:
– A: between 8 and 12 mm
– B: between 5 and 8 mm
– C: between 7 and 11 mm
A
If the belt tension is not sufficient:
Loosen the fastening bolts (2)
that hold the alternator in place.
Use a prybar/lever and place it between the alternator
and engine block.
Push the alternator outwards to achieve
the required belt tension.
Tighten the bolts (2) holding the alternator
with the correct torque.
Rubber elements and fastening screws - Check
Check all rubber elements (1).
Replace all of the elements if more than 25% of them
on one side of the drum are cracked deeper than
10-15 mm (0.4-0.6 in).
Check using a knife blade or pointed object.
Check also that the screw fasteners (2) are tightened.
1
4812165001.pdf
Exercise care to stop the engine and remove
Exercise care to stop the engine and remove
the key before checking the belt tension.
the key before checking the belt tension.
If the belt is loose or damaged, it may result in
If the belt is loose or damaged, it may result in
insufficient charging. Adjust or replace the belt.
insufficient charging. Adjust or replace the belt.
9500h
127
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