12E 21F Grader clutch stuck

Wow! Stuck clutch on an oil clutch design has to be pretty rare! I believe I would try an oil change and refill after as good of an inspection as I could accomplish. Looking and feeling for broken parts through the access cover is going to be difficult at best.

If you want to break it loose, a higher gear will be more effective.

My 12 grader with oil clutch was stuck when I got it. I tried every short cut I could think of to get it free. In the end I had to pull the engine to get it free. Heavy but not too tough of a job. General gear has new discs for a reasonable price. Hopefully you have better luck!

Sounds like I will be on that path soon. What was the problem when you got into it.
thanks WF

The fibre discs were stuck to the pressure plate intermediate plate and flywheel. Don't really remember if it was rust or just oil residue sticking together. I don't know if that grader uses the same 3 section oil pump as my 8T, but if there are any pieces missing from ring gear or pinion or anything else loose in there you should check your pump suction. The way the strainer is made big pieces can get jammed in there and eventually wear through mesh. Then the big piece gets sucked into the pump and destroys it. Parts are hard to find too. I soldered a piece of shim stock over the hole, and it's been fine for the hundred of so hours I've run it. I got new discs for mine from General Gear in Idaho.
Good luck.
Kirk

Thanks Kirk.
Will look into it more. This one has D333 direct start so will be a bit different to 8T. Might try tying the pedal down for a couple of days and let it think about it, nothing to loose.
cheers WF

Thanks Kirk.
Will look into it more. This one has D333 direct start so will be a bit different to 8T. Might try tying the pedal down for a couple of days and let it think about it, nothing to loose.
cheers WF

Hi, Wimmera farmer.
You might get lucky tying the clutch pedal down and towing it around for a while in 3rd or 4th gear but have somebody on the grader in case it does break loose and they need to use the brakes to stop it.

OM's trick of tying the pedal down any time it's going to be parked for a while might also work but it would place extra tension on the springs. If you are going to try it, I'd suggest tying or blocking the pedal down while the engine is still running so that you know there is space between the plates and then shut the engine off.

I have never heard of 21Fs having this problem before. Amax Bauxite had 2 of them up on Mitchell Plateau in the Kimberley and they stood for at least 5 months every year through the wet. They were started religiously once a month during the wet but only to give the engines a run and not driven around at all. Quite a few stations up there had them too and I never heard any complaints about it. 'Course, Victoria's 'different'. LOL.

Hoping to see you at Wheatland at Easter.

Just my 0.02.

[quote="Deas Plant."]
OM's trick of tying the pedal down any time it's going to be parked for a while might also work but it would place extra tension on the springs. If you are going to try it, I'd suggest tying or blocking the pedal down while the engine is still running so that you know there is space between the plates and then shut the engine off.

Just my 0.02.[/quote]

Brings up a point, on these over center clutches I always disengage the clutch while the engine is running then shut it down leaving the clutch disengaged until the big engine is later restarted.


BTW, this is the only time that clutch is disengaged while the engine is running!! (except for gear change):drum: