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Slipping Worn sheaves Debris in sheaves OEP 268 Belts
Vibration
H Corrective Action Use larger diameter sheaves
Retension to manufacturer’s recommendations Increase backside idler to acceptable diameter
Don’t coil belt too tightly, kink or bend Avoid heat and direct sunlight Control drive environment
Retension to manufacturer’s recommendations Realign drive
Replace sheaves Replace with correct belt size Check alignment and correct Follow correct installation procedure Replace sheaves for correct belt/sheave match Use correct belt/sheave match Belt rubbing against guard or drive structure Remove obstruction DO NOT use belt dressing; eliminate sources of oil, grease, or chemical contamination
Repair or replace guard Repair or replace idler
Improve ventilation to drive Retension to manufacturer’s recommendations Use correct belt/sheave match
Check structure for adequate strength and rigidity Replace defective sheave
Check machine components, guards, motor mounts, motor pads, bushings, brackets and framework for adequate strength, stability and installation
Improve ventilation to drive Retension until slipping stops
J WEAR ON BOTTOM SURFACE Belt bottoming against sheave groove bottom Use correct belt/sheave match