I was going to say, this sounds like either a very badly designed motor or
some malfunction has caused the scoring. I seem to recall mentioning this
once before on here when somebody found that the brush replacement still
intermittently gave error codes. Back in the day when I had a machine made
by Service, this exact same problem is what took it down. it also had
started to get dry joint issues all over the place and I thought getting
that all fixed would make it last, but it lasted three months till it
spluttered went bang and blew the fuses. Comutator basically knackered.

Such is life.
Brian

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This newsgroup posting comes to you directly from...
The Sofa of Brian Gaff...

Blind user, so no pictures please!
"Graham." wrote in message
...
On Sat, 25 Mar 2017 10:44:04 +0000, Tim Lamb
wrote:

Bosch drive motor failure on spin function. Failed to reach full speed
and then tripped out the house RCD.

Google seems to imply this is terminal for the motor. On examination the
carbon brushes have worn to the point where the copper inserts have
marked the commutator.

Set of brushes are cheap enough but replacing the motor at 175-200ukp
seems poor economics.

Any experience?

AFAIK the flexible braided wire should be short enough not to allow
that to happen.

Treat it to some new brushes and if it continues to trip the RCD strip
it down, inspect, and clean the carbon deposits off the commutator,
brush carriers etc.


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Graham.
%Profound_observation%