Belts - Inspect/Adjust/Replace - Perkins 2506 Operation And Maintenance Manual

SEBU8313-02

Belts - Inspect/Adjust/Replace

Inspection
Inspect the alternator belt and the fan drive belts for
wear and for cracking. Replace the belts if the belts
are not in good condition.
Check the belt tension according to the information in
Systems Operation, Testing and Adjusting, "Belt
Tension Chart".
Slippage of loose belts can reduce the efficiency of
the driven components. Vibration of loose belts can
cause unnecessary wear on the following
components:
• Belts
• Pulleys
• Bearings
If the belts are too tight, unnecessary stress is placed
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on the components. This reduces the service life of
the components.
Replacement
For applications that require multiple drive belts,
replace the drive belts in matched sets. Replacing
one drive belt of a matched set will cause the new
drive belt to carry more load because the older drive
belts are stretched. The additional load on the new
drive belt could cause the new drive belt to fail.
Alternator Belt Adjustment
Illustration 23
1. Remove the belt guard.
2. Loosen alternator pivot bolt (2) .
3. Loosen the setscrew for the adjustment link which
is behind the fan pulley and the setscrew (1).
Maintenance Section
Belts - Inspect/Adjust/Replace
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