question about bosch motor armature/commutator

[smcilwain]

Hi,

my bosch wff2001 motor has stopped turning again aftyer filling with water.

I only replaced the brushes a year and a a half ago. THere is still just under 1/2 inch carbon on each brush.

Someone suggested that the armature might be worn. How can i tell if this is the case please. Obviously I don’t want to order new brushes if I really need a new motor! Will new brushes get more life out of worn commutator.

I am going to try replacing the brushes again anyway, but do I really need a Washing Machine Motor Commutator Cleaner (they are more expensive than the brushes!) would a cleaner help if my armatare is worn? – or could I not just clean the commutator with some super fine abrasive paper.

Any speedy replies welcome as I need to order the brushes if that will suffice.

Many thanks in advance

SM

[smcilwain]

Re: question about bosch motor armature/commutator

Just a quick bump.

Can anybody shed any light?

Thanks again ❓

[Penguin45]

Re: question about bosch motor armature/commutator

When the motor is new, the commutator is flat. As the brushes wear, they wear the surface of the commutator into a groove. If the groove is particularly pronounced, the new brushes have difficulty seating properly and tend to be a bit “sparky”. This causes them to wear rapidly.

Giving the commutator a wipe over with fine emery won’t do any harm.

Penguin45.

[smcilwain]

Re: question about bosch motor armature/commutator

Thanks Penguin. Much appreciated. Do you advise the special cleaner??

Thanks again.

[Penguin45]

Re: question about bosch motor armature/commutator

No, I’ve never used the stuff.

Penguin 45.

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