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| Crank engine at vibration damper/belt pulley using a socket. |
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| Sub-surface cracks (cracks, core ruptures, cross sectional breaks) |
| t
| Layer separation (top layer, cord strands) |
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| Fraying of cord strands |
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| Flank wear (material wear, frayed flanks, flank brittleness -glassy flanks-, surface cracks) |
| t
| Traces of oil and grease |
Caution | If faults are found, it is essential for the poly V-belt to be renewed. This will avoid possible breakdowns or operating problems. |
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