TYM T454HST, Operator'S Manual

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100
FAN BELT ADJUSTMENT
1.Loosen the alternator pivot bolt.
2.Move the alternator in order to increase or decrease the belt tension.
Tighten the alternator pivot bolt and the link bolt to 22 N.m(16 lb ft)(1)
7~9mm
Alternator Inspect
Perkins recommends a scheduled inspection of the alternator.Inspect the alternator for
loose connections and proper battery charging. Inspect the ammeter(If equipped) during
engine operation in order to ensure proper battery performance and/or proper
performance of the electrical system .Make repairs, as required.
Check the alternator and the battery charger for proper operation.If the batteries are
properly charged ,the ammeter reading should be very near Zero.
All batteries should be kept warm because temperature affects the cranking power.
If the battery is too colt,the battery will not crank the engine.When the engine is not run
for long periods of time or if the engine is run for short periods.The batteries may not
fully charge. A battery with a low charge will freeze more easily than a battery with
a full charge.
Alternator and Fan Belts Inspect/Adjust/Replace
For applications that require multiple drive belts, Replace the belts in matched
sets. Replacing only one belt of a matched set will cause the new belt to carry more load
because the older belt is stretched.
The additional load on the new belt could cause the new belt to break.
If the belts are too loose.Vibration causes unnecessary wear on the belts and
pulleys. Loose belt may slip enough to cause overheating.
To accurately check the belt tension ,a suitable gauge should be used.
Fit the gauge(1) at the center of the
longest free length and check the
tension.The correct tension is
535N(120 lb).If the tension of the
belt is below 250N(56 lb) adjust the
belt to 535 N (120 lb).
If twin belts are installed,check and
adjust the tension on the both belts.