Bosch Drive Belt / Drum Drive Failure

Bosch dryer drum does not turn, but you can hear the motor humming or running.

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Safety Warning

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

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Possible Causes

Broken or slipped drive belt, Worn idler pulley, Seized drum rollers, Stripped motor pulley

How to Fix / Troubleshooting

Safety first: Unplug the dryer.

  • Check drum movement: Open the door and try to rotate the drum by hand. If it spins very freely with little resistance, the belt may be broken.
  • Inspect belt: Remove the top and front panels to view the belt around the drum. Replace if broken or heavily worn.
  • Check idler pulley and rollers: Spin each by hand; replace any that are noisy, wobbly, or seized.

Install the new belt following the Bosch belt routing pattern around the motor pulley and idler.

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Repair Difficulty

Medium 3/5

Required Part

Drive Belt
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