Replacing carbon brush of Bosch machine now totally not working.
So this morning my Bosch WFL 2862 washing machine stopped spinning and after some google research this would probably be the carbon brushes that are worn. Took them out and there was little left on them. So I bought some new ones(oem 00154740) and fitted them one.
Turned it on and set it to lowest rpm 800 and let it spin. It worked for a few seconds but them I heard a pop noise and it turned off all together. Now it won't even turn on any more...
I checked if the brushed were still in and they were. Didn't see any other strange damage.
I did not remove the motor will doing this btw. Is it toast?
Solution Summary
AI-generated from this discussion
This thread was marked as solved. Here's a summary of the problem and the fix, generated from the discussion below.
Bosch WFL 2862 dead after carbon brush replacement
- The problem
- A Bosch WFL 2862 washing machine had stopped spinning. The original brushes were found heavily worn and were replaced with OEM carbon brushes 00154740. After refitting, the machine spun briefly at 800 rpm, then there was a pop and it shut down completely. It would not power on afterwards.
- Likely cause
- Most strongly supported diagnosis is a short circuit associated with the motor/brush area. The accepted reply said the motor may have shorted due to incorrectly fitted brushes, brass touching the commutator, an armature fault, an insulation fault, or carbon dust causing low insulation. Another reply said a loose brush wire touching something could blow the plug fuse.
- What fixed it
- Recommended action was to check the washing machine plug fuse, as this was stated to be the only fuse on the machine. If the fuse is intact, the accepted advice points to a motor fault or insulation problem requiring specialist testing. The exact repair was not confirmed in the discussion.
- Checks to try
- Original brushes removed and found to have very little material left
- New OEM brushes 00154740 fitted
- Machine tested on 800 rpm spin and ran for a few seconds before a pop and total loss of power
- Brushes rechecked after the failure
- One brush connector was found loose or came loose
- Forum advised checking the fuse in the plug
- Parts or tools mentioned
- OEM carbon brushes 00154740
- Plug fuse
- Specialist insulation test meter
Safety: Further diagnosis should be carried out by a suitably qualified appliance engineer.
6 Answers
The motor may have shorted out. Either the brushes were not fitted properly and maybe part of the brass touched the commutator, or possibly the armature is faulty, or there's an insulation fault on it. The latter would need a specialist insulation test meter to check.
Sometimes when brushes wear out there's a lot of carbon dust deposited inside the motor that can cause low insulation.
Need Professional Help or Spare Parts?
I just removed the brushes again and one of the connectors(of the brush) came lose or was already lose. But this wouldnt cause it to not turn on right?
I guess its not worth it on this machine to get it repaired considering the cost?
If by any chance the wire touched anything and shorted out it would blow the fuse. Has the fuse blown? Otherwise if the wire was not connected I'd expect everything to work except the motor.
Need Professional Help or Spare Parts?
To be honest I don't know much about these repairs... but it did sound as if the fuse was blown.
Not sure where I can find the fuse(s?).
There's only a fuse in the plug on a washing machine.
Need Professional Help or Spare Parts?
Ok thank you I asked a mechanic nearby what it will cost to have the fuse and the brushes replaced again.
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