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How to Spot V -Belt Trouble <br />Trouble <br />Cause <br />To Correct <br />Belt Slip (sidewalls <br />Not enough tension <br />Replace belts: apply proper <br />lazed) <br />tension <br />Drive squeals <br />Shock load <br />Apply proper tension <br />Not enough arc of contact <br />Increase center distance <br />Heavy starting load <br />Increase tension <br />Belt turned over <br />Broken cord caused by prying on <br />Replace set of belts correctly <br />sheave <br />Overloaded Drive <br />Redesign drive <br />Impulse loads <br />Apply proper tension <br />Misalignment of sheave and <br />Realign drive <br />shaft <br />Worn sheave grooves <br />Replace sheaves <br />Flat idler sheave <br />Align idler. Re -position on slack <br />side of drive close to drive sheave <br />Excessive belt vibration <br />Check drive design. Check <br />equipment for solid mounting. <br />Consider use of banded belts. <br />Mismatched Belts <br />New belts installed with old belts <br />Replace belts in matched set only <br />Sheave grooves worn unevenly: <br />Replace sheaves <br />improper groove angle. Give <br />appearance of mismatched belts <br />Sheave shafts not parallel. Give <br />Align drive <br />appearance of mismatched <br />belts. <br />Belt breaks <br />Shock loads <br />Apply proper tension: Recheck <br />drive <br />Heavy starting loads <br />Apply proper tension: Recheck <br />drive. Use compensator starting <br />Foreign objects in drive <br />Provide drive shroud <br />Belt wears rapidly <br />Sheave grooves worn <br />Replace sheaves <br />Sheave diameter too small <br />Redesign drive <br />Mismatched belts <br />Replace with matched belts <br />Drive overloaded <br />Redesign drive <br />Belts slips <br />Increase tension <br />Sheaves misaligned <br />Align sheaves <br />Oil or heat condition <br />Eliminate oil. Ventilate drive <br />Trouble Shooting V -Belts <br />Pcs/o&m/v-belt-maint-1-5 <br />