Stuck clutch on my 186D

[rhulette]

I forgot to put the clutch pedal hook on a couple of months(well maybe 5 months) ago after I last took the 186D out for some exercise.
It looks like the clutch is stuck good. I can move it around and I've tried to unstick it using the "hit the brakes" method, but I have no luck yet.

I've also tried to run it up a steep incline in 3rd gear, but that didn't break it free. I also took the starter out and gave the flywheel a couple of smacks - no joy there either...

Any other suggestions? The PTO method looks good, but I don't have anything but the FEL.

A further down the road question for you all:
If all else fails and I need to pull it apart, what should I replace when I get in there besides the throwout bearing? A new clutch is only $75.00...

The service manual procedure doesn't look too difficult - is there anything I need to pay special attention to?

Thanks!!
Randy

 

[George2615]

I'd continue driving it around awhile hoping to free it up. If you have to replace it change the clutch disc, pressure plate and throwout bearing. Pilot bushing / bearing should be OK.

 

[winston1]

I forgot to put the clutch pedal hook on a couple of months(well maybe 5 months) ago after I last took the 186D out for some exercise.
It looks like the clutch is stuck good. I can move it around and I've tried to unstick it using the "hit the brakes" method, but I have no luck yet.

I've also tried to run it up a steep incline in 3rd gear, but that didn't break it free. I also took the starter out and gave the flywheel a couple of smacks - no joy there either...

Any other suggestions? The PTO method looks good, but I don't have anything but the FEL.

A further down the road question for you all:
If all else fails and I need to pull it apart, what should I replace when I get in there besides the throwout bearing? A new clutch is only $75.00...

The service manual procedure doesn't look too difficult - is there anything I need to pay special attention to?

Thanks!!
Randy

Assume you are doing all this with the pedal locked down?

Never tried it but I know a trick an old mechanic uses in freeing up engines that have locked up. Jack one rear wheel up and rock it back and forth in a high gear. You can get quite a jolt doing that. Again, with the pedal locked down.

 

[normde2001]

"Assume you are doing all this with the pedal locked down?"

Was going to be My question too. I never heard/read of 1 of these methods not working. I freed one on a car once by pushing it up against a tree, in gear, pedal down, and bumping starter a couple of times.

 

[California]

It's a Powershift model so a technique related to turning the wheels is going to put a big shock load on the transmission's clutches. I don't think this is good for the Powershift, nor is likely to be effective since those clutches soften the shifting.

Since the PTO is a direct connection it can produce the shock load you are looking for. Borrowing an implement then intentionally stalling it, or cranking the starter with the PTO engaged and the interlocks defeated, might be a reasonable next step before giving up and splitting the tractor.


Mr FORD - Here's a clue: you are posting in the Yanmar forum. Take a flying guess.

 

[284 International]

WHAT BRAND IS IT?

He has a Yanmar, just like the "YANMAR EQUIPMENT" heading of the forum implies. These are older, perhaps "classic" tractors, roughly 30 years old.

WHAT THE ****!? HOW THE **** DO U DO THAT!?

It's not that difficult to do, and is actually not a terribly rare occurrence with equipment that sits, particularly with a bit of humidity in the air.

Also, just so you are aware, typing in all caps means you are yelling at us, which appears rude, particularly with the added context of you using obscene language, redacted or not. There's no need for that type of conduct here. To answer your question, as rhulette said in his initial post, he "did that" by not doing anything: He let his tractor sit for several months, and the pressure plate and clutch disk bonded together. Now pressing the clutch pedal does not disengage engine power from the transmission.

Rhulette: You are fortunate in that this is a powershift equipped tractor; you can use it with full functionality without the clutch pedal, so you may elect to simply use it as-is! If you want to fix it, I think some of the best and easiest ideas have been submitted already. As Winston suggested, make sure you're keeping the clutch pedal depressed at all times until it breaks free.

Never tried it but I know a trick an old mechanic uses in freeing up engines that have locked up. Jack one rear wheel up and rock it back and forth in a high gear. You can get quite a jolt doing that. Again, with the pedal locked down.

I'm interested to see if this works. My YM186D is impossible for me to push, even in neutral, on pavement. I seem to recall something about an internal brake, but I'm honestly not sure where or how that mechanism functions. I'm suspicious that without the engine running, the pump that produces the pressure to lock the powershift range unit together won't hold residual pressure, so the tractor may free-wheel on the transmission side, as well as being locked up by the brake. I'm not sure if I would try it with the tractor running or not; I know I wouldn't recommend someone else doing it... (I know Winston wasn't suggesting that; I'm just not sure if the machine will allow rotation of the tires to "shock" the clutch plate unless it is sending power through the transmission already.)

I have had this happen to me before. One time I couldn't get it to disengage by driving around, but once I attached the tiller and buried it in soft dirt, with the clutch in, everything immediately popped free. The other time I was able to disengage it just by dropping the implement. If you have a disk, or a box blade with rippers, or anything that will potentially stop the tractor, I would try attaching it onto the tractor, then put the machine in low or middle range, and in second speed figure out a way to get the tractor moving then increasingly load it until the tractor is pulling at full RPM and heavily loaded, then bump the powershift into third gear while depressing the clutch. I bet that will shock the clutch free quite readily. I think trying to use the loader to push in those circumstances is asking for trouble. Good luck! I hope you can figure something out.

 

[normde2001]

Good point, Cal. This can happen to any vehicle with a standard clutch. My 2 year-old '63 406cid Ford did it after sitting through a hurricane.

 

[rhulette]

Thank you all for the suggestions. It's still stuck, but with the Powershift transmission, I can still get around. As long as I can get it off the patio next week for my daughter's graduation party, all is well. If it's still stuck in a couple of weeks, I'll split the tractor and replace the clutch. With Father's Day coming up, I can request the clutch parts!

Randy

I forgot to put the clutch pedal hook on a couple of months(well maybe 5 months) ago after I last took the 186D out for some exercise.
It looks like the clutch is stuck good. I can move it around and I've tried to unstick it using the "hit the brakes" method, but I have no luck yet.

I've also tried to run it up a steep incline in 3rd gear, but that didn't break it free. I also took the starter out and gave the flywheel a couple of smacks - no joy there either...

Any other suggestions? The PTO method looks good, but I don't have anything but the FEL.

A further down the road question for you all:
If all else fails and I need to pull it apart, what should I replace when I get in there besides the throwout bearing? A new clutch is only $75.00...

The service manual procedure doesn't look too difficult - is there anything I need to pay special attention to?

Thanks!!
Randy