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Harry Ferguson Tractors Discussion Forum
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TO 30 Resurection (Starter Check)

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Jim Gorter

06-19-2007 09:36:22




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Hello to all. My diagnosis continues... I have removed and cleaned all the cables and wires. All cables have been checked for resistance and check out good. the starter still just barely turns over the engine with spark plugs installed. New 6 volt battery with the charger on for a boost. Will turn over 4 or 5 revolutions and then stall. Can I run a test onthe starter for voltage draw? What else to look for? On the good side, the engine, with the plugs out, turns over good and throws a nice, fat, blue white, Jerry approved spark. Thanks, Jim.

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Jim Gorter

06-20-2007 08:29:03




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 Re: TO 30 Resurection (Starter Check) in reply to Jim Gorter, 06-19-2007 09:36:22  
Thanks for your replys. Phil; should I be concerned about the higher voltage getting to the coil or will the solenoid being open,keep it isolated?
I.J.; I cleaned off the mating surfaces, but will go back and hit with a wire brush to make sure the contact surfaces are good.



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phil(va)

06-20-2007 20:18:05




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 Re: TO 30 Resurection (Starter Check) in reply to Jim Gorter, 06-20-2007 08:29:03  
If you do it just as i said, direct to the starter, the coil is not involved.



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phil(va)

06-20-2007 06:47:43




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 Re: TO 30 Resurection (Starter Check) in reply to Jim Gorter, 06-19-2007 09:36:22  
Take a 12 volt battery, it can be in a vehicle, doesn"t matter as long as it"s got a good charge. Hook one side of it directly to the top post of the starter. Doesn"t matter which side. Make sure tractor is out of gear. Make double sure. Then touch other side of cable from 12 volt battery to a good ground on the tractor. Starter should turn over fast. If you have key on, it should start, but that"s really not necessary to test what you are trying to test. Don"t touch the tractor battery at all.

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mark from the fort

06-20-2007 10:50:13




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 Re: TO 30 Resurection (Starter Check) in reply to phil(va), 06-20-2007 06:47:43  
just to add to Phils, your 6 volt is most likely (or should be) POSITIVE ground. When you jump with the 12 battery, make sure your negative from battery is on the starter and the positive from battery goes onto ground.
I bought a 6 volter a while back and it did the same thing...in fact, it came with an 8 volt battery. First thing I did was make new battery cables (00 guage) -yes they are really fat. Cleaned ALL connections with small wire brush, AND-and I think this was the key, I ran the new larger positive cable(ground) directly to the bolt that mounts the starter on the tractor (again) wire brushing until I had shiney metal on both tractor and starter mounting tab. Is made a huge difference. I did clean EVERY ignition related wire connection as well. It still doesn't turn over like my 12 volter,--but it doesn't need to--she "pops" on the second turn over every time.
Another possibility, though more $$$, is that the starter needs a rebuild. I have had 6 volt starter rebuilt and they turned over much better.
When you do get her going, theres a certain "cool" factor in having a good starting 6 volt tractor.
I do believe strongly in the larger battery cables and better grounding location. F.Y.I. ask around, my local industrial battery warehouse has battery cable ends that do not need soldiering. They are more like a router chuck where you place a collar around the bare wire and the business end actually threads onto the collar and crimps the wire from all sides. Various assortment of ends (45 degrees, 90 degree, straight) very nice for keeping larger cable tucked neatly against tractor.
Hope this is helpful. Mark

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Jim Gorter

06-21-2007 10:19:42




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 Re: TO 30 Resurection (Starter Check) in reply to mark from the fort, 06-20-2007 10:50:13  
Mark, thanks for the tips. I tried the 12 V jump and the starter did nothing. Tried both polarities, no difference. I did a voltage test on circuit from batt to starter thru solenoid. With charger on, the batt alone showed 8.7 V. bat to solenoid cable 8.68 V. with starter solenoid engaged the batt to solenoid to starter lug showed 5.7V. I suspect the voltage loss is thru the contact points on the solenoid, Have a new one ordered. Next step is to have the starter tested at the shop. Thanks again, Jim.

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Indiana Jones

06-19-2007 17:30:16




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 Re: TO 30 Resurection (Starter Check) in reply to Jim Gorter, 06-19-2007 09:36:22  
Have you checked the mating surfaces of starter to block?



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