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)
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.
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 535
N (120 lb). If the tension of the belt is below 250 N (56 lb) adjust the belt to 535 N (120 lb).
If twin belts are installed,check and adjust the tension on the both belts.
1 - 7~9 m
U18N096
1 - Burroughs gauge
U18N097
To Next Page
Loading...
Need help?
General