Pusher fan refresh

kevins2 · #1 (**permalink**) 09-26-2019, 12:17 PM

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

RockBit · #2 (**permalink**) 09-26-2019, 05:16 PM

Kevin:

I have been thinking about adding the pusher fans to my car. I assume yours were supplied by ERA, correct?

How often do you run your fans? Do they come on with temperature or are they on all the time?

Thanks

kevins2 · #3 (**permalink**) 09-26-2019, 05:30 PM

Yes, they were supplied by ERA and come on and off with a temperature sensor. There is also a dash switch to turn them on manually (in the off position they still come on with temperature) but I've never had overheating problems so haven't needed to do that.

Kevin

patrickt · #4 (**permalink**) 09-26-2019, 06:29 PM

Quote:

Originally Posted by RockBit

Kevin:

I have been thinking about adding the pusher fans to my car. I assume yours were supplied by ERA, correct?

How often do you run your fans? Do they come on with temperature or are they on all the time?

Thanks

As originally installed by ERA, the pushers come on at the same time as the puller. But, you don't need them most of the time. The better solution is this: Cool Modification - For Pusher Fans Only, Though

strictlypersonl · #5 (**permalink**) 09-27-2019, 06:07 AM

The motor is from Grainger. Dayton 3LCH7. Amazon also has them .

kevins2 · #6 (**permalink**) 09-27-2019, 07:27 AM

Thanks Bob, much appreciated.

RockBit · #7 (**permalink**) 09-27-2019, 08:38 AM

Quote:

Originally Posted by kevins2

Yes, they were supplied by ERA and come on and off with a temperature sensor. There is also a dash switch to turn them on manually (in the off position they still come on with temperature) but I've never had overheating problems so haven't needed to do that.

Thanks Kevin.