89 Marathon....Starter Issue

[yellowhorse7]

Originally Posted by Dave Box

I am sure that you have already done this but........
There must be a good ground braid from the ground point on the frame to the engine case. If this is missing the engine will try to find a ground anyway it can, typically the choke cable. If that is good enough the cable will melt due the high current pull, if not good enough the starter will not turn.
Dave

Dave-

The braid is gone. I replaced with 4 gauge in the same places. Engine to frame, battery to frame and "C" to frame (all of which are clean-metal grounds). I will re-trace though and check. Thanks

[yellowhorse7]

Originally Posted by madoc1

yellow-i just reread your first post. you say the starter is disconnected from the engine. if it is you will have no ground. try running a hd jumper cable from the batt to an ear on the starter and then trying it.

Jim-

When I say disconnected I mean that it is in fact mounted but the belt is not on.

STill need to put a DVOM across A & B and see what happens

[yellowhorse7]

Update...

Ran power directly to F2 from the battery and a #4 ground directly from the battery to the ear of the starter. It did nothing. Being that it didn't even attempt to spin the unit has to be bad, no? Now I've yet to pull the starter and open it up, but it did pass the field coil test that the manual outlines. I removed the rubber caps and nothing smells burnt. Hell, I even took some electric motor spray and cleaned the brushes and comm pretty well. Even though it passed the field coil test there has got to be a coil that is broken. I may try and get it rebuilt.

Anything I'm missing here guys??

[Dave Box]

Did you pull the brushes out to physically inspect them?

[yellowhorse7]

No but I will. I did however give it a "tap" test with ball peen hammer. Nada

[yellowhorse7]

Checked all 4 brushes and all look good. Oh well..,rebuild time