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TYMA CZ
belts and
transmission systems
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Causes of Failure of V-Belts and the Solution

Hardened, polished flanks

Diagnosis Solution
Incorrect tensioning Change the belt, adjust tension correctly
Tension member of belt damaged by incorrect fitting Change belt, fit properly

Uneven wear on ribs

Diagnosis Solution
Pulleys are not aligned Examine the drive. Line up or, if necessary, replace any non-aligned pulleys, change the belt
Substantial belt vibrations Check the tension. If necessary, tighten or change the belt

Running noises from belt

Diagnosis Solution
Insufficient tension Tighten or change the belt
Belt past its useful life Change the belt

Cracks/separations in belt body/ribs

Diagnosis Solution
Belt tension is too high/low Change the belt, adjust tension correctly
Belt past its useful life Change the belt
Foreign matter Change the belt

Crack in the belt after a short running time

Diagnosis Solution
Tension members damaged as a result of incorrect fitting Change the belt, fitting it correctly
Belt excessively tensioned Change the belt, adjust tension correctly

Dirt accumulation on the belt

Diagnosis Solution
Leaks in the engine or engine compartment (e.g. escape of oil, antifreeze etc.) Repair leak(s), change the belt

Hardened, polished flanks (different tension values for belts of sets)

Diagnosis Solution
Pulleys not aligned Examine the drive, line up non-aligned pulleys and fit a new set of belts
Tension member of belt damaged by incorrect fitting Change the belt, fitting it correctly
Mismatching of belts Always replace a complete set of belts

Excessive wear on flanks/flanks brittle

Diagnosis Solution
Excessive slip Change the belt, adjust the tension correctly
Pulleys not aligned Examine the drive, line up or, if necessary, replace any non-aligned pulleys
Pulley grooves with uneven wear Line up or, if necessary, replace any non-aligned pulleys