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50 pto clutch lever stuck

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James

02-23-2002 14:12:54




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Just bought my first two cylinder,PTO clutch lever is stuck, won't move at all. Manuals are on the way but wondering if any of you might help in troubleshooting. Thanks (1953 JD 50 live pto)




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Ron Wood

02-24-2002 12:07:06




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 Re: 50 pto clutch lever stuck in reply to James, 02-23-2002 14:12:54  
James, I just went through a complete overhaul of my 50's live PTO last fall. It had exactly the same symptoms you are describing. Fortunately the seal into the rearend wasn't leaking. But all the clutch discs were completely worn out, some down to no friction material. I'm not sure of this, but I believe the reason the lever won't move at all when the discs get totally worn is that there is no adjustment left in the over-center action of the clutch. With all new clutch discs and proper adjustment, mine now works fine. I have the manuals, but found they don't tell you everything, like lining up the oil holes in the splined shaft with the openings in the clutch discs (so you get proper oiling of the clutches when it is disengaged), also that it is essentially a trial and error thing to get the adjustment right and that there is uncertainty in the clearance of the properly adjusted clutch. I had numbers from .060 to .090 based on what I read or who responded to questions on here or Rummy's. I ended up setting mine at about .075. I also found (after the fact!) it was necessary to replace the oil seal on the output shaft. But that is easy to do after all else is back together. I was told that 90 weight transmission oil is a big no-no on the PTO clutch discs so it very important to be sure the seal from the transmission is not leaking.

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Clooney

02-23-2002 14:39:37




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 Re: 50 pto clutch lever stuck in reply to James, 02-23-2002 14:12:54  
James, there could be many reasons that the lever won't move, from a rusted lever, frozen linkage pins, frozen clutch fork due to rust, frozen clutch pack inside the rear housing or (?).
~Start by moving the lever & watch to see if there is any movement at any points, if so look farther towards the fork shaft. Where the slight movement stops the problem is usually found.
~It would probably be a good idea to soak all the linkage pivot points with penetrating oil & try to work the lever to see if it will free up.
~If that doesn't help, remove the pivot pin from the linkage clevis at the fork lever going into the rear housing (you might need heat or have to drill it out), then you will be able to tell if the problem is in the lever & link pivots or the fork shaft/internal clutch pack.
~When you isolate what part of the lever system is causing the lack of movement post back & we will try to help you narrow in on the problem.

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James

02-23-2002 14:58:13




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 Re: Re: 50 pto clutch lever stuck in reply to Clooney, 02-23-2002 14:39:37  
Clooney, I unhooked the linkage, the lever going into the housing is stuck, tried tapping lightly with hammer and also tried moving lever with small pipe wrench,won't move up or down. Thanks, James



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Frank-in-Tallahassee

02-23-2002 15:20:17




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 Re: Re: Re: 50 pto clutch lever stuck in reply to James, 02-23-2002 14:58:13  
James:

I'm sure Clooney will give you some more advice on how to start freeing things, up, but until then, if you remove the inspection plug (and where you add the oil for the clutch), see if there is any oil in there, and if so, does it have a bunch of water in it. If it does, until you can can do anything else, I'd drain it and re-fill with diesel fuel. This might help to soak things loose and drive out moisture, but it sounds like you have a bit of disassembly ahead of you. It's not too bad, but there is a troublesome inner shaft oil seal that can and does go bad that requires removal of the rear end assembly. You'll see that failure as an increase in pto oil, or the pto oil running into the rearend. That's because that power shaft has it's own oil/lube pump for the pto clutch.

And if you do have to take off the back housing, do yourself a favor and renew the rockshaft o-ring and gasket at that time.

Frank-in-Tallahassee
70D // 855

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James

02-23-2002 16:31:42




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 Re: Re: Re: Re: 50 pto clutch lever stuck in reply to Frank-in-Tallahassee, 02-23-2002 15:20:17  
Frank, all fluids were changed by previous owner, so it is full and clean, a tad over full so the inner seal might be bad. I knew of stuck lever before purchase as not to place blame. Guess my best bet will be to wait on manuals and start dissasembly. Just hoping I would get lucky and make an adjustment. Thanks, James



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Clooney

02-23-2002 16:52:25




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 Re: Re: Re: Re: Re: 50 pto clutch lever stuck in reply to James, 02-23-2002 16:31:42  
James, is there any movement in the fork lever at all? If not the shaft is probably frozen from corrosion, if there is slight movement you might try adjusting the PTO clutch, as maybe someone has set it too tight to go over center.
~There is a lot typing to go through the PTO clutch adjustment procedure so you might want to either wait for your manual or do a search for "PTO adjustment" in the archives. I typed it out for someone about a year ago, not sure if on YT here, or on Rummy's though. You might also find it by running a search for Clooney. ~If you don't get your manuals, or can't find the adjustment procedure, E-Mail me or post back & when I get some time I will re-type it for you.

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James

02-23-2002 17:17:22




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 Re: Re: Re: Re: Re: Re: 50 pto clutch lever stuck in reply to Clooney, 02-23-2002 16:52:25  
Clooney, there is no movement going up or down. Manuals should be here in a couple of days. I will post back when I get them and get into it. Thanks to you and Frank.



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