Isuzu — Fan Belt Tension Adjustment
Adjustments · Cooling system / fan belt
From a Isuzu owner's manual — check it applies to your exact model before use.
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Before you start
- Belt tension that is too high will result in generator failure; loose belt causes slippage, damaged belt and abnormal noise.
- Replace all belts as a set even when one is not usable.
Procedure
- Loosen the generator adjusting plate bolt and the generator mounting bolt.
- Pivot the generator at the mounting bolt toward the engine left or right hand side as required.
- Tighten the mounting bolt and the adjusting bolt.
- Recheck the belt tension after tightening the bolts.
- Operate the engine about five minutes at a low idle speed and recheck the belt tension.
Specs & values
- Belt tension is normal when depressed 10 mm (0.39 in) with the thumb at midway between the fan pulley and generator pulley (about 10 kg (22 lb) depressing force)
Source: Isuzu owner's manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.