To answer completely is not yet possible. The clutch is operating normally. It is a single stage clutch (non live PTO). When it quit, The tranny had been making a loud rhythmic clunking noise. The Pto speed llever cannot not be shifted before the tranny issue without using the clutch, nor could the lo-hi range lever be shifted if the clutch was engaged, After the breakdown,The PTO would wok sometimes, and not other times, but the clutch is operative normally.
The tranny is being opened by a mechanic on Tuesday or Wednesday of this coming week. I doubt that there is any problem with either the clutch or the throw out bearing, and the gear lever can be switched to any gear without difficulty, but when the clutch pedal is released there is a lot of noise from inside the tranny and nothing will move, including the PTO shaft output stub. Just before everything failed, the PTO would work if the blower was not moving snow, but not under load. The TPH lift still operates normally, so I doubt that it is the main shaft being broken
I do not have a workshop manual, but I have studied the parts diagrams thoroughly. I concluded therefrom that the input driveshaft is not broken, but that one or more of the transfer gears, has been broken.
There are five shafts in the tanny and perhaps five or six gears. My guess is that it is an intermediate gear that transfers power to the other gears in the train and that it has lost a tooth or teeth. I do not think it is the bevel gear that drives the rear axle, but the front axle does not turn either, in 4WD, hi or lo. That is a major clue in the mystery.
It made the rhythmic clunking noise under power for about three hours before it completely broke down. It did this in any gear whether hi or lo range, where or not it was in 2 or 4 wheel drive, and whether or not the PTO was turning,
My best guess is for a broken cross pin or a key, transfer gear or some such. The good news is that I do have a parts source, (in PA I think) My first guess (wrong) was that a small stone had been entrained in the blower drive roller chain. I had found a plastic hazard cone in the blower and that had caused me to break a set of two shear bolts off at the PTO Universal, nearest the tractor. After replacing the shear bolts, everything worked, except for the clunking noise about every 10 seconds at full RPM loads. My head is getting a lot of scratching, but only dandruff is happening...heh Heh.....:banghead:
Tranny parts are not available from Kubota any more, so I have my fingers crossed for when we get a proper diagnosis. If I cannot get it fixed, I may have 11,000 worth of scrap iron with a very nice cab:hissyfit: I wish I had a shop manual, they are scarce, and expensive.
