Resolutions for Different Types of Belt Failures for 3500 and C175 Series Engines {1397}
- Caterpillar Products Machine Engines
- All 3500 Series
- All C175 Series
- Caterpillar Products Machine Engines
- All 3500 Series
- All C175 Series
Introduction
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
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Illustration 1 | g06235123 |
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Rib Wear | |
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Causes | Resolution |
Excessive slipping, low tension, and/or contamination | Check the tensioner and accessories. Replace the belt. |
Chunk Out
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Illustration 2 | g06235124 |
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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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Illustration 3 | g06235126 |
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Abrasion | |
Causes | Resolution |
Excessive pulley surface roughness, foreign object, and/or slipping | Inspect the pulley surfaces. Replace the belt. |
Pilling
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Illustration 4 | g06235128 |
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Pilling | |
Causes | Resolution |
Misalignment and/or contamination | Align all the pulleys and clean off any contaminants. Replace the belt. |
Uneven Wear/Rib Splitting
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Illustration 5 | g06235129 |
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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
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Illustration 6 | g06235130 |
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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. |
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