Schulthess
Contamination from seal, bearings, or buildup
Washer leaves black or brown marks on laundry.
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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
Degrading door gasket rubber, Failing drum bearings leaking grease, Heavy biofilm and dirt in tub, Overuse of fabric softener
How to Fix / Troubleshooting
Safety first: Unplug the washer before internal inspection.
- Step 1 – Inspect gasket: Check the door seal for black, sticky residue or crumbling rubber. Clean thoroughly; replace if deteriorated.
- Step 2 – Run cleaning cycles: Perform multiple hot maintenance washes with machine cleaner to remove internal buildup.
- Step 3 – Bearing check: Listen for rumbling during spin and look for brown streaks at the rear of the tub. If present, bearings may be leaking grease into the drum and require professional replacement.
- Step 4 – Reduce softener: Use less fabric softener or switch to dryer sheets to reduce sticky deposits.
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Repair Difficulty
Medium
3/5
Required Part
Door Gasket (Door Boot Seal)
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