Bosch motor faulty?

[burton1972]

Hi. Done a continuity test on a bosch motor to see if its faulty. Have readings on connections 1&2 and 5&6 but no reading on 3&4 and have tested the brushes as well, which are ok.
Can someone let me know the diagnosis please and what i can do?

[iadom]

Re: Bosch motor faulty?

Several different motors used on Bosch machines, model/ENR number of the machine it came from would help.

What is the problem with the machine, have the brushes been changed recently?

Could be the motor TOC has blown, this would mean a new motor is required most of the time.

[burton1972]

Re: Bosch motor faulty?

Model is WAE24162UK. It drains and fills but no water agitation. Brushes still have about 20mm left on them.
Can the TOC be replaced?

[electrofix]

Re: Bosch motor faulty?

burton1972 wrote:Hi. Done a continuity test on a bosch motor to see if its faulty. Have readings on connections 1&2 and 5&6 but no reading on 3&4 and have tested the brushes as well, which are ok.
Can someone let me know the diagnosis please and what i can do?

you have 6 connections

2 for armature
2 for field coil
2 for tachometer

the armature and field give a very low reading but the tacho is higher so may give the indication it is not there. use a higher resistance range and see if it is there.

if 3 {e5d1b7155a01ef1f3b9c9968eaba33524ee81600d00d4be2b4d93ac2e58cec2d} 4 still are not there you need to find out what the do. you can rule out armature by testing from the brushes to the plug to see where it goes

Dave

[burton1972]

Re: Bosch motor faulty?

Thank you Dave and iadom you been very helpful.
Still the one question… Can a tacho be changed?

[electrofix]

Re: Bosch motor faulty?

in a word no and yes

not available as a spare but with a donor scrap motor all parts can be changed

Dave

[Author]

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