I replaced the connector with no change. Ended up taking the motor part way apart.
After pulling off the end plate with the brushes, I have 12-13 volts at the brushes with the switch on so everything up to the brushes appears to be in good shape. The armature is free and will move the pistons. (it has a gear that runs two pistons back and forth and I could rotate the armature back and forth)(I didn't try to spin it as it had some resistance). I put the juice to it and pushed on the pistons moving the armature and it didn't help.
The commutator or whatever where the brushes ride has 10 copper segments to it. All the segments showed continuity with each other with about 6 or 7 ohms resistance.
Any idea now what is wrong? I'm guessing an armature winding has a dead short although everything I can see from one end looks ok. Thanks.
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Today's Featured Article - A Lifetime of David Brown Tractors - by Samuel Kennedy. I was born in 1950 and reared on my family�s 100 acre farm. It was a fairly typical Northern Ireland farm where the main enterprise was dairying but some pigs, poultry and sheep were also kept. Potatoes were grown for sale and oats were grown to be used for cattle and horse feeding. Up to about 1958 the dairy cows were fed hay with some turnips and after that grass silage was the main winter feed. That same year was the last in which flax was grown on the farm. Flax provided the fibre which w
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