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DC motor help

DC motor help

DC motor help

(OP)
Gday all,

I'm in need of some advice/assisstance with a DC motor.

In particular is the Heater Fan/blower Motor from a D22 Nissan Navara (australian)

One day the motor stopped spinning, so I got to exploring and pull it apart. It seems not many forums and internet users have pulled one appart, so I knew I was heading into a sort of unknown territory. When I finally got to the carbon brushes i notice they were worn, so I got to changing them which was a hassel. The ones I recieved were wrong sizes so i simple "filed" them down to the correct width and height, however I am still unsure of length.

When i reassembled the motor, it would not turn still. I am getting 12v power through the brushed and onto the communicator (test volts with a multimeter). I can spin it easily by hand. But when I spin it with power on, once every full rotation I get a spark around the bush below the commmunicator.

Would the length of the brushes effect the motor to turn (as i think they maybe too long causing excessive pressure on the communicator)?
Any other hints or advice would be welcomed.

RE: DC motor help

Throw away. Get a new one.

There is most probably a break in the armature winding. Brush length is not critical as long as they do contact the commutator surface - don't use "communicator" - that's something entirely different.

Gunnar Englund
www.gke.org
--------------------------------------
Half full - Half empty? I don't mind. It's what in it that counts.

RE: DC motor help

(OP)
Hi,
Thanks for the resopnses. I had autocorrect on and the damm thing changed it to communicator.
Stupid smart devices!

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