BODY 4M9110 - Caterpillar

Caterpillar Products Machine Engines All 3500 Series All C175 SeriesCaterpillar Products Machine Engines All 3500 Series All C175 SeriesIntroduction
Do not perform any procedure in this Special Instruction until you have read the information and you understand the information. The following Special Instruction covers the identification and solutions to the different types of belts failures.Types of Belt Failure and Resolution
Rib Wear
Illustration 1 g06235123
Table 1
Rib Wear
Causes Resolution
Excessive slipping, low tension, and/or contamination Check the tensioner and accessories. Replace the belt. Chunk Out
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Table 2
Chuck Out
Causes Resolution
Excessive heat or cold, and/or flex fatigue Check the tensioner and pulley condition. Replace the belt. Abrasion
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Table 3
Abrasion
Causes Resolution
Excessive pulley surface roughness, foreign object, and/or slipping Inspect the pulley surfaces. Replace the belt. Pilling
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Table 4
Pilling
Causes Resolution
Misalignment and/or contamination Align all the pulleys and clean off any contaminants. Replace the belt. Uneven Wear/Rib Splitting
Illustration 5 g06235129
Table 5
Uneven Wear/Rib Splitting
Causes Resolution
Misalignment, incorrect installation, and/or belt jumping Align all the pulleys and check the pulleys condition. Replace the belt. Cracking
Illustration 6 g06235130
Table 6
Cracking
Causes Resolution
Extreme heat or cold conditions, and/or flex fatigue Cracking alone is not a failure. Belts can continue to run for 2 to 3 times longer after the first cracking occurs. If the belt is still performing, check the tension and pulley condition. Monitor the belt for other failure modes.