[kevins2]

One of my pusher fans was running erratically and sometimes not at all. Wiggling the wires where they go into the fan motor would cause it to run so I assumed it was a loose wire. When I opened up the motor I discovered that wasn't the problem - the wires were well fastened. The problem was an accumulation of fine dust from the brushes wearing and causing a poor connection with the commutator. Wiggling the wires where they enter the motor also wiggles the brushes and the fan would run. As a frame of reference, I have just over 15,000 miles. So, cleaned the motor and resurfaced the commutator, which is worn and will need to be replaced at some point. The brushes have about 20 - 25% left. Motor now runs well.

There are no markings on these motors. Bob, do you have a part number for these motors or even for the brushes or commutator/armature?

Kevin