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Ford Tractors Discussion Forum

Ford 620 front pulley removal

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10-16-2018 05:55:06

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I’ve got the front end removed from my 620 and I need to get off the front crank pulley but it won’t come off. I removed the four bolts and it spins freely but it won’t come off. I’ve heard other people have a big nut holding it on but I don’t have any big nut holding it on. Any ideas ?

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10-16-2018 07:45:41

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 Re: Ford 620 front pulley removal in reply to FordNMan, 10-16-2018 05:55:06  
there is like a flat circular piece of metal flush with pulley and in center of pulley that has some pattern on it. Is there some way to remove that

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10-16-2018 10:07:40

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 Re: Ford 620 front pulley removal in reply to FordNMan, 10-16-2018 07:45:41  
Not sure of the "metal flush with pulley with pattern" is or could be. But the hub has to be held to the crankshaft with something, attaching to the center of the crank as the crank has a threaded bolt hole in the center

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10-16-2018 06:11:21

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 Re: Ford 620 front pulley removal in reply to FordNMan, 10-16-2018 05:55:06  
The four bolts hold the pulley to the hub. The hub is bolted to the front of the crankshaft by a big nut. remove the big nut and remove the hub and pulley together to see why the two will not separate. Or perhaps you have a big slot headed bolt holding the hub!

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10-16-2018 06:05:31

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 Re: Ford 620 front pulley removal in reply to FordNMan, 10-16-2018 05:55:06  
Agree on no big nut as that's what the 4 bolts are for. Problem with heat is your front oil seal otherwise that would be the suggestion. However, having crankcase oil on the other side of the seal might mitigate any possible damage due to heat.

Probably not adaptable to a regular puller.......might get something like a " piece of all thread, fabricate an adapter to chain, wrap chain around the accessible parts and after a thorough penetrating oil soaking, try that for a puller with hammer taps as an aid.

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Today's Featured Article - The Nuts and Bolts of Fasteners - Part 2 - by Curtis Von Fange. In our previous article we discussed capscrews, bolts, and nuts along with their relative hardness and thread sizes. In this segment we will finish up on our fasteners and then work with ways to keep them from loosening up in the field. Capscrews, bolts and nuts are not the only means of holding two parts together. When dealing with thinner metals like sheet tin, a long bolt and ... [Read Article]

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