I would try to clean/buff/shine up the commutator to remove any oxidation or oil or crud. To test for shorts in the armature place an ohm meter lead on the armature shaft then place the other lead on the commutator segments and there should be an OPEN circuit IE NO shorts. The brushes should be clean with enough length remaining so the hold down springys are pushing them tight to the commutator. An Ohm meter from frame to the input stud should show continuity and extreme LOW resistance. CAUTION when trying to jump with a battery and cables have it tight in a vice cuz it kicks in hard n fast. The bushings have to be in good enough shape so the armature isn't dragging.....It should turn free n smooth by hand and exhibit no burned smells..
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Today's Featured Article - Tractor Traction - by Chris Pratt. Our first bout with traction problems came when cultivatin with our Massey-Harris Pony. Up till then, this tractor had been running a corn grinder and pulling a trailer. It had new unfilled rear tires and no wheel weights. The garden was already sprouting when we hooked up the mid-mount shovel cultivators to the Pony. The seed bed was soft enough that the rear end would spin and slowly work its way to the downhill side of the gardens slight incline. From this, we learned our lesson sinc
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