Posted by JDEM on March 23, 2020 at 06:54:58 from (47.33.231.52):
For anyone that owns one of these optional live PTO options. Here are some added specs. On mine, if I had new clutch disks, I could fix it. It is likely something else out there will fit. I just don't happen to know where and want to get this tractor running now. So I have eliminated this dealer-installed option.
The clutch assembly has 8 steel plates and 8 friction disks. The friction disks are approx. 5 1/4" OD, .063" thick (my used disks), have 45 teeth on the ID, and approx. 3 5/8" distance for the ID. The disks are metallic and look very similar to what John Deere used to have in their hydraulic reversers in the 350 crawlers. I know in the Deere machines, the clutches were made by Twin Disk Inc.
My tractor is missing the piston-type hydraulic accumulator. It seems to have been previously removed. It is not needed for things to work. It is just there to soften engagement. I suspect it was removed because the rubber hose to it blew in the past? There are two rubber hydraulic hoses to this setup and neither can be replaced without splitting the tractor. Well, maybe if they were cut off and new hoses were made with swivel ends there might be a way to do it without splitting.
The round side-plate on the "passenger side" that has the hydraulic dipstick is OEM but modified for this kit. The dealer would of drilled it and added a hydraulic suction tube.
The round side-plate on the "driver's side" is completely new and comes with the kit. It carries the OEM type mechanical PTO lever, along with a second "live PTO" lever that operates a hydraulic control valve. That valve is built into the cover. It is bare-bones simple. Just a piton and a spring. No soft seals inside. When you put the live PTO lever into "engage" it puts pressure on the spring and piston an raised hydraulic pressure that locks up the clutches.
I guess that is about all the info I can come up with. If someone on this forum has a source for new clutch disks that do not cost a small fortune, I'd like to know about it. When I last worked at a John Deere dealership in 1991, those disks were near $40 each!!
One last comment. When I first posted about this tractor having slipping problems, one person said I ought to stop asking questions and just go to work on the tractor instead. I am glad I asked. I have been working on tractors for 50 years but before this - had no idea Ford ever offered such an option. If I had known then, what I know now - I could of fixed the tractor without splitting it. It appears that all I would of had to do is remove the PTO hydraulic pump and this clutch pack would of mechanically engaged into full lockup and stayed that way. Now I know. I have to say it is kind of an ingenious setup. Mine was slipping with regular oil in it (as far as I know). When I changed the oil to ATF, it got worse. Likely due to the friction modifiers and worn clutches?
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Today's Featured Article - Hydraulics - Cylinder Anatomy - by Curtis von Fange. Let’s make one more addition to our series on hydraulics. I’ve noticed a few questions in the comment section that could pertain to hydraulic cylinders so I thought we could take a short look at this real workhorse of the circuit. Cylinders are the reason for the hydraulic circuit. They take the fluid power delivered from the pump and magically change it into mechanical power. There are many types of cylinders that one might run across on a farm scenario. Each one could take a chapter in
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