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Ford Tractors Discussion Forum
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electrical

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gofast12

02-05-2018 06:30:12




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Got a '64 4000 Sos. Going to convert it to 12v-3 wire. found a few wiring diagrams but not very detailed in hooking up the 2 warning lights that I have.

1- does the transmission pressure switch just run from the switch inside of the transmission through the light to a hot spot when the key is on?

2-does the charge warning light (hooks in Field wire) run through the light and to a hot spot when the key is on? or does it need a different type of light?..

3- is the wire really needed that runs off the ig terminal on the starter relay.

Thanks for the help.

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Destroked 450

02-05-2018 14:20:55




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 Re: electrical in reply to gofast12, 02-05-2018 06:30:12  
Ouch, that's going to hurt.

Many years ago I loaned my 4000 SOS to a friend to spread half a buggy of fertilizer on a flat field, he brought it back with the main shaft broke off inside the C sun gear.

I found the parts at a salvage yard called Coulters in Danville, Ky. They did a lot of SOS conversions back in the day, a few years later the pump failed and I swapped it over to a 8x2, still have the tractor, sold the SOS to a guy looking for parts.

Did a search and it's now called Jeff's Tractor Salvage but doing a satellite search shows a empty lot where the salvage tractors used to be, probably sold for scrap when prices where high.

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Destroked 450

02-05-2018 12:56:49




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 Re: electrical in reply to gofast12, 02-05-2018 06:30:12  
Was it a bearing instead of a clutch pack or both, or are you working on a different tractor than the one in the pressure video's.



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Bern

02-05-2018 13:27:21




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 Re: electrical in reply to Destroked 450, 02-05-2018 12:56:49  
third party image

third party image

Same one. Ball bearing went out on the main input drive shaft, which screwed up the seals going to the DD clutch. This is why it slipped in half the gears. You can see what's left of the seal, as well as the severely worn seal grooves.

I'll say it again: I don't understand why Ford eliminated the low lube pressure warning light on the '68 up tractors. If it had one, the owner could have caught this much sooner and saved some money.

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Bern

02-05-2018 10:34:10




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 Re: electrical in reply to gofast12, 02-05-2018 06:30:12  
I'll simply say this about the SOS and the warning light...make sure it's hooked up and functioning. I'm working on a SOS in my shop right now that has issues due to a failed bearing. This issue could have been caught by the owner much sooner if that tractor had a functioning low pressure warning light.



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sunbeam

02-05-2018 07:42:35




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 Re: electrical in reply to gofast12, 02-05-2018 06:30:12  
Terminal 2 can be wired to the out put term term 1 to the light you should go to 12v bulbs.



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Larry NCKS

02-05-2018 07:22:01




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 Re: electrical in reply to gofast12, 02-05-2018 06:30:12  
1. A grounding switch is located on the transmission output housing. It is actually not inside the transmission, but is inside the hydraulic reservoir or center housing.

2. IDK

3. Yes it is. Without it you'd have no electrical source to close the solenoid contacts.



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