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« on: October 18, 2009, 05:23:48 PM »
Hi all, I'm trying to help my friend get her tractor started for sale and it's giving us a bit of a hard time. It's always started...except now that someone wants to buy it!
So far heres whats going on,
1.starter turns the engine easily with the spark plugs out but the starter seems to get pretty warm pretty fast
2.with the plugs in it will turn the engine a few times but more slowly and then get very slow and not turn at all
3.the negative battery cable was getting a bit warm so I ran a redundant along next to it and grounded it directly to the starter casing to ensure it was getting a very good connecting. the positive cable is very heavy gauge all the way and stays cool, the negative is still getting a bit warm at the battery.
4. i remove the metal shield around the brush end of the motor and the commutator looks pretty worn and there was a lot of powdered copper inside there. i did not touch anything in there yet, not sure what i should be touching. i turned the key with the cover off and the brushes seem to run roughly over the commutator, when it does not turn the motor just twitches when you turn the key.
5. i jumped the solenoid posts (the solenoid is not the original one, someone has done some wiring work) with the head of a ratchet and the starter behaves the same way, the solenoid seems to be good.
I'm thinking that the starter motor is shot or on its last legs, but I wanted your opinion of the situation. Also, I have no clue how the motor comes off the tractor. I work on cars, their starters have bolts that hold them, I don't see any bolts holding this to the bell housing. I'm a little lost on this one. If i remove it, theres a local company that does rebuilds on starters and alternators/generators and electric motors for the shop i work at, I would just ask them to rebuild it. I see a starter listed on ebay, but I still don't see how it attaches to the engine exactly. Thankyou for your time, and I hope you all can give me some help on this! she needs it sold to help pay her property taxes