21-04-2016, 07:07 AM
(This post was last modified: 21-04-2016, 07:11 AM by Murphyv310.)
Hi.
As the brushes get near the wear limit the contact area reduces as they can tip in the holder and have less spring pressure, this often stops the low speed operation of the motor.
Our Bosch stopped working on the wash cycle some years ago and I was convinced it was control board problems. When I pulled it out I metered the voltage on wash to the motor and I was getting a feed, at that point I removed the brushes and they were at the limit with an odd wear shape.
I had the option of £36 brushes from Bosch or £5 cheap ones so I opted for the £5 ones for a test as I wasn't completely convinced. The problem was cured so after a few weeks I bought the proper ones, good job I did as the carbon powder was everywhere, I cleaned it all up washed the commutator and motor housing with isopropyl and fitted the genuine brushes, that was 6 years ago and touch wood all is still well.
Possibly worth a try with cheap ones firstly.
As the brushes get near the wear limit the contact area reduces as they can tip in the holder and have less spring pressure, this often stops the low speed operation of the motor.
Our Bosch stopped working on the wash cycle some years ago and I was convinced it was control board problems. When I pulled it out I metered the voltage on wash to the motor and I was getting a feed, at that point I removed the brushes and they were at the limit with an odd wear shape.
I had the option of £36 brushes from Bosch or £5 cheap ones so I opted for the £5 ones for a test as I wasn't completely convinced. The problem was cured so after a few weeks I bought the proper ones, good job I did as the carbon powder was everywhere, I cleaned it all up washed the commutator and motor housing with isopropyl and fitted the genuine brushes, that was 6 years ago and touch wood all is still well.
Possibly worth a try with cheap ones firstly.
