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Discussion Forum
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Farmall 400 PTO disconnect clutch

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Bob M

10-08-2001 08:53:50




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A "green" buddy of mine finally saw the light and purchased himself a 400 - his first non-Deere tractor. I stopped to watch him plow with it over the weekend and inquired whether he'd released the "seasonal disconnect" clutch on the PTO. Turned out he had not, so we went underneath to shift it out of gear. When we removed the capscrew that holds the shifter in place we were greeted by a small flood of what appeared to be old 90W gear oil. We quickly shifted the disconnect lever and reinstalled the capscrew which stopped the flow of oil.

My question: Is this normal? I'm suspecting the transmission input shaft seal has failed and leaking tranny oil is accumulating in the bottom of the belly casting. My experience is limited to non-TA/non-live PTO-equipped Super series tractors - where the belly is dry between the flywheel and the transmission. Any advice is appreciated! ...Bob M

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Charlie

10-08-2001 16:17:58




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 Re: Farmall 400 PTO disconnect clutch in reply to Bob M, 10-08-2001 08:53:50  
I quess this is a good time to ask - what is the purpose of that disconnect anyway.



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Bob M

10-08-2001 16:42:49




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 Re: Re: Farmall 400 PTO disconnect clutch in reply to Charlie, 10-08-2001 16:17:58  
Charlie - There's a band brake controlled planetary gearset inside the PTO housing that spins even when the PTO lever is disengaged. The seasonal disconnect clutch is a dog clutch to shut the whole business off for when running the tractor on non-PTO work. Saves unnecessary wear on the PTO clutch mechanism I guess - and probably saves a bit of gas too.



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Ace Schrunk

10-08-2001 10:30:52




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 Re: Farmall 400 PTO disconnect clutch in reply to Bob M, 10-08-2001 08:53:50  
The only part of a 400 that is dry is where each clutch is so you should have oil where the disconect is but if looks like you said I would change it. you don't have to disconnect the pto just run with the PTO lever in gear.



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