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 Operator Safety - Loader & Backhoe Operation - by Staff. Loader Operation Do not transport anyone in the loader bucket. Always carry the loader bucket low for maximum stability and visibility, whether the bucket is loaded or empty. Always use the recommended amount of counterweihting to ensure good stability. Be careful when handling large objects such as round bales, logs,
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