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Old 04-13-2008, 03:02 PM   #261 (permalink)
bennelson
EV test pilot
 
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Join Date: Jan 2008
Location: Oconomowoc, WI, USA
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Electric Cycle - '81 Kawasaki KZ440
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tore apart Nissan Forklift Motor



Greasy FUN! - Ok not really all that fun. Still pretty cold out right now to be covered with WD40 and using metal tools.

I finally was able to get the end off the big double-ended forklift motor.

It was INSANELY greasy/grimey/dirty inside.

I degunked it as best I could with my fingers and a palate knife. Then just hosed down all the parts with WD40. Should help degrease it and keep from surface rusting while it is apart.

Inside is four electro-magnetic coils and four matching brushes. The brushes are pretty beefy sized, but are VERY worn down and will definately going to need to be replaced.

When I first tested the motor on 12V - I could see a little bit of arcing off one of the brushes.

The commutator looks pretty worn. I think the brushes were so worn down that they were digging in funny. I think brushes are like brake pads - you just need to wear them in a little bit before everything fits really well, right?

The middle chunk of motor, which holds the field coils, is 7 inches long. (on the left in the photo on the top)

Now that I have it apart, I can see if somebody like Jim Husted will take a quick look and offer advice.

You can see more photos of this motor torn apart HERE

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