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10�5 Cranks and bottom bracket
Cranks can become loose. Therefore, you should check that the cranks are securely tightened
at regular intervals or have them checked by a specialist.
Have damaged cranks repaired by professionals and replaced if necessary. Bottom
brackets can wear out after a certain amount of time.
Have hard-to-rotate or damaged bottom brackets repaired by professionals and
replaced if necessary.
10�6 Spokes and wheels
Spokes connect the hubs to the rims. They must be properly tensioned because they have an
inuence on how the wheel rotates. Check the spokes regularly for damage and adequate
tension or have them checked by a specialist.
Have damaged spokes repaired by professionals and replaced if necessary.
If a wheel has excessive lateral or vertical runout (more than 1 mm), have it repaired
or trued by a professional.
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