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General Information
TABLE 4 Drive Belt Makes Noise
Symptom / Observation
Belt makes noise.
Belt makes a slapping
sound.
Belt makes a rubbing
sound.
Belt makes a not normal
or loud noise.
Drive makes a grinding
sound.
01-30
Possible Causes
Belt slippage.
Belt or sheaves contaminated with
oil, grease, or chemicals.
Belt tension too loose.
Belt strand lengths are not equal.
Driver and driven sheaves not
aligned.
Idler sheave not aligned.
Belt rubbing on some obstruction.
Belt profile does not equal sheave
groove profile.
Worn sheave grooves (check with
groove gauge).
Trash or debris fell into the sheave
grooves.
Damaged or failed shaft bearings.
Corrections / Remedy
Properly adjust the belt tension.
Repair cause of oil, grease, or chemicals.
Clean the belt and sheave grooves with a
degreasing solvent that is not flammable or
toxic, then wash the belts with a soap and
water solution.
Properly adjust the belt tension.
Properly adjust the belt tension.
Properly install a new original equipment belt
and adjust the belt tension and idler spring.
Align sheaves and check alignment with the
sheaves loaded and unloaded.
Properly adjust the belt tension.
Align sheaves and check alignment with the
sheaves loaded and unloaded.
Properly adjust the belt tension.
Remove the obstruction and align the drive to
give needed clearance.
Replace the worn sheaves.
Properly install a new original equipment belt
and adjust the belt tension and idler spring.
Replace the worn sheaves.
Properly install a new original equipment belt
and adjust the belt tension and idler spring.
Clean trash and debris from the sheave
grooves.
Correct the cause of trash and debris entering
the sheave grooves and make sure all the
protective shields are installed.
Replace the damaged or failed bearings as
required.
4283528M1
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