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Ford Tractors Discussion Forum
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14: clutch in an 8700

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Joe Pro

01-04-2019 05:11:32




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I am doing an out of frame overhaul on an 8700 with a later engine in it from a TW25.

The owner bales with this tractor, so we thought it would be a bright idea to upgrade the 13" clutch to a 14".

We did some research and believed it would all work.

I got a flywheel and throwout bearing carrier from a TW25.

I am not attempting to install the engine and it won't " fit".
It seems the flywheel is hitting on two raised areas of the 8700 bellhousing at about the 4 and 8 o'clock positions.
Am I missing something simple, or will it plain not work?

Thanks.

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Bern

01-04-2019 07:14:06




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 Re: 14: clutch in an 8700 in reply to Joe Pro, 01-04-2019 05:11:32  
I've never tried to do what you're doing, but I suspect you're right, there is not enough room inside the transmission casting to allow the clearance.

Two options I can think of:

1) grind away the clearance that you need if it won't require removing a lot of material. 2) go back to the 13" clutch. A non-turbo 401 engine will never make enough power to slip a 13" metallic clutch. Even if you put the turbo on it from the TW25, the 9700 did just fine with the 13" clutch.

Be advised that if you do go back to the 13" clutch, from factory at least, the 9700 had either more springs in the pressure plate, and/or they were heavier than the 8700. I don't have a clutch chart in front of me to verify the exact details. Stated another way, your existing 13" clutch would likely slip behind a turbo engine.

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riveroadrat

01-04-2019 06:35:45




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 Re: 14: clutch in an 8700 in reply to Joe Pro, 01-04-2019 05:11:32  
The block casting must be the same as it fits. The tranny casting is probably different. A dealer or shop that knows them might be able to tell you. Bern probably knows.



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