Sommer Worn or Damaged Drive Carriage / Rail

Loud grinding or scraping noise from the rail area during operation.

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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

Worn internal gears in carriage, Debris or rust inside rail, Misaligned rail sections, Lack of lubrication where specified

How to Fix / Troubleshooting

Safety: Keep hands clear of moving parts while testing.

  • 1. Isolate noise source: Listen closely to determine if the noise comes from the rail, carriage, or door hardware.
  • 2. Inspect rail interior: Remove the carriage (per Sommer instructions) and inspect inside the rail for rust, burrs, or foreign objects. Clean thoroughly.
  • 3. Check carriage wheels/gears: Look for worn plastic or metal parts inside the carriage. If teeth are rounded or cracked, replace the carriage.
  • 4. Lubricate as specified: Apply a light, Sommer‑approved lubricant to the carriage contact surfaces if recommended by the manual (do not over‑grease).
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Repair Difficulty

Medium 3/5

Required Part

Sommer Motor Carriage Assembly
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