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Farmall & IHC Tractors Discussion Forum
Show Parts for Model:

Re: electrical issue on Farmall Cub 1951

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B Rankin

04-12-2013 11:10:16
12.183.49.75



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J Nicloleson, After reading your reply you seem to have the best idea. All replys are greatly appreciated! But J. I can start the tractor if I bypass with jumper cables and do a direct application. I use a screw driver and push in the switch and it starts right up. All is well until I need to restart. But can the switch be bad if I can still start by pushing down on the switch during direct current? My ignition switch works fine when I turn the tractor off.

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Janicholson

04-12-2013 18:42:10
74.60.94.18



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 Re: electrical issue on Farmall Cub 1951 in reply to B Rankin, 04-12-2013 11:10:16  
If you are jumping to the connection stud on the starter switch with a jump from an external battery, you are effectively eliminating the installed battery and the connections from it to the starter.
Steps:
Remove the nut and washers from the switch that hold the battery cable, and the wire to the amp meter. Clean this connection with 120 grit sand paper and reinstall. Try it.

Remove the battery terminals at the battery and clean them, then replace and tighten. Try it.

Check the voltage of the battery. If 6v it should be 6.3 volts or more.

If 12v it should be 12.6v

If less than that (either) it needs to be charged and retested. If still low the battery is probably bad.

Charging voltage is 7 volts to 7.2 volts on 6 volt systems. It is 14.2 to 14.6 volts on 12v systems. Start a new post, this one is getting old and far back in the pages. (I use the classic view) Jim

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B Rankin

04-15-2013 13:21:50
74.93.141.129



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 Re: electrical issue on Farmall Cub 1951 in reply to Janicholson, 04-12-2013 18:42:10  
To reply to your last. I am using the battery on the tractor not an external battery. That is why I am puzzled. It starts fine with jumper cables. But it won't without. I hook jumper cables to the existing battery and to the start post and a ground on the tractor and push the starter switch with a screw driver and it starts like it was supposed to. I cleaned both terminals. Do I need to replace the ground cable also? I'm just out of ideas.

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