Well, clutch IS stuck on my 155D

[Goldchaser]

Checked it this afternoon while I was tinkering and it looks like it is stuck open. Dis engaged....as if pedal pushed in. whatever... Am hoping to see if I can start this engine tomorrow and hope that just maybe that will free it. <fingers crossed> But I am not holding my breath. Looks like I am going to get up close and personal with this and have to split it. I was halfway afraid I would have to since this thing had sat for so long. Since the disk would not be on the plate?, or would it? Cant remember. Its been a while since I tore into a clutch. If the disk is not engaged with the pressure plate then it should mean easier repair...I think since the two wouldnt be fused together. Or am I thinking wrong. Its been a long day....<sigh>

 

[JC-jetro]

Checked it this afternoon while I was tinkering and it looks like it is stuck open. Dis engaged....as if pedal pushed in. whatever... Am hoping to see if I can start this engine tomorrow and hope that just maybe that will free it. <fingers crossed> But I am not holding my breath. Looks like I am going to get up close and personal with this and have to split it. I was halfway afraid I would have to since this thing had sat for so long. Since the disk would not be on the plate?, or would it? Cant remember. Its been a while since I tore into a clutch. If the disk is not engaged with the pressure plate then it should mean easier repair...I think since the two wouldnt be fused together. Or am I thinking wrong. Its been a long day....<sigh>

Pushed in pedal will "dis-engage" pressure plate from flywheel. that should have no effect on starting.. it is same as having "neutral safety " switch on tractor starting circuit. a way to check the dis engagement is to see if you can push or pull tractor or easier by raising the rear axle supported by hjack stand.. id disengage then you should be able to rotate the wheel without a whole lot of effort. Your throw out bearing is most likely frozen in a position where it is pushing and is also stuck to pressure plate fingers. can you move the clutch pedal any at all? how about clutch adjustment? you may just need to back out the adjustment on the clutch where throw out bearing is not touching the fingers. I'll exhaust all my options before considering tractor split. good luck.

JC,

 

[Goldchaser]

Pushed in pedal will "dis-engage" pressure plate from flywheel. that should have no effect on starting.. it is same as having "neutral safety " switch on tractor starting circuit. a way to check the dis engagement is to see if you can push or pull tractor or easier by raising the rear axle supported by hjack stand.. id disengage then you should be able to rotate the wheel without a whole lot of effort. Your throw out bearing is most likely frozen in a position where it is pushing and is also stuck to pressure plate fingers. can you move the clutch pedal any at all? how about clutch adjustment? you may just need to back out the adjustment on the clutch where throw out bearing is not touching the fingers. I'll exhaust all my options before considering tractor split. good luck.

JC,

The clutch pedal can be pushed in no problem. Right now I have the tractor up on jack stands. Putting it in gear the rear wheels turn with ease. No difference either in gear or out of gear. The high/low is engaged. Will try backing out the adjustment on the clutch and see what results. Thanks

Dennis

 

[Underwaterdog]

I just got through replacing the rear main seal on my YM2500. It wasn't as bad as I thought. I had foolishly let it set up for about a year, only running it occasionally to keep the battery up. When I broke it apart and started seperating the two halfs, the drive shaft didn't slide out of the clutch housing, and pulled the throw-out bearing carrier out to far, and sprung one of the return springs which I had to replace. Watch that when you start sliding it apart, watch the alignment and maybe bump the shaft or bearing carrier with a block of wood to help it slide out. Since it appears that it is stuck disengaged, it could be a stuck spring(s) in the pressure plate, or the throwout bearing carrier may be rusted to the shaft. Do you know if it is a one or two stage clutch? Also, while your in there, check that rear main seal. Its easy to pull. There was light rust on the shaft and I think that is what caused the seal to start leaking. I polished the shaft with some 400 grit wet or dry sandpaper and it is fine now. I would recommend changing that seal while your in there. It is less than $10. You may also need to look in the hydraulic lift cylinder. Most of the cylinder walls are exposed to the atomosphere through the vent when down. Mine had rust in there too, which I polished that with an engine cylinder hone. I don't have that part back together yet. I've been taking pictures along the way, and intend to post the whole project when I get through.

 

[Tom_Veatch]

The clutch pedal can be pushed in no problem. Right now I have the tractor up on jack stands. Putting it in gear the rear wheels turn with ease. No difference either in gear or out of gear. The high/low is engaged. Will try backing out the adjustment on the clutch and see what results. Thanks

Dennis

I'm obviously missing something here. Why do you think the clutch is stuck?

Tractor is up on jack stands and the rear wheels turn. If both rear wheels are off the ground, and you turn one, does the other one turn the opposite direction?

If the differential lock is engaged, can you still turn the wheel with ease? Or if the brake is engaged on one wheel, can you still turn the other wheel with ease?

If there is no difference in the effort needed to turn the wheel regardless of whether or not it's in gear, are you sure you're even turning the transmission. Maybe all the rotation is taking place in the differential and none of it is getting to the transmission, much less the clutch.

 

[Underwaterdog]

Your sharp Tom. I completely missed that. I better get some sleep. Wife is telling me I don't look so good.

 

[JC-jetro]

I'm obviously missing something here. Why do you think the clutch is stuck?

That's exactly what I was saying on my first post. since the wheels are turning with clutch pedal out and engine off is proof positive that" pressure plate and flywheel are not pushing hard against each other and the clutch disk in between. If clutch pedal moves back and forth is an indication that release mechanism (fork and bearing hub) is not frozen in place. My suspicion is that that you need clutch adjustment... your throw out bearing is touching the finger on pressure plate with some force disengaging the clutch disk and pressure plate when the pedal is out. pushing it by foot only disengages it even more with the exact same effect.

Jc,

 

[frank_z]

I had friend whose "green" tractor had the same problem a number of years ago. In his case, when he split the tractor, he found that the clutch friction disk spline was stripped or worn out. He said that the tractor just suddenly lost power and there was no indication that anything broke.

Frank Z

 

[Goldchaser]

That's exactly what I was saying on my first post. since the wheels are turning with clutch pedal out and engine off is proof positive that" pressure plate and flywheel are not pushing hard against each other and the clutch disk in between. If clutch pedal moves back and forth is an indication that release mechanism (fork and bearing hub) is not frozen in place. My suspicion is that that you need clutch adjustment... your throw out bearing is touching the finger on pressure plate with some force disengaging the clutch disk and pressure plate when the pedal is out. pushing it by foot only disengages it even more with the exact same effect.

Jc,

I will be checking what you suggest later today. Have to make a trip into town on other business so I wont have a chance to work on the tractor until this evening at the earliest. We had some hogs delivered yesterday so of course we ran out of feed. <sigh> Was not expecting the delivery.

 

[Tom_Veatch]

That's exactly what I was saying on my first post. since the wheels are turning with clutch pedal out and engine off is proof positive that" pressure plate and flywheel are not pushing hard against each other and the clutch disk in between. ...

That's true if both wheels are rotated in the same direction, or if one wheel is blocked such that it can't rotate. But, if both wheels are off the ground, and free to rotate, when one wheel is manually rotated, the other wheel will likely rotate the opposite direction due to gearing in the differential. If that's the case, it's likely that the transmission/clutch isn't being rotated at all.

I'm not saying that's the case here, but the original post wasn't clear on whether both wheels were free to turn or, if they were, what was happening to the opposite wheel when one wheel was manually rotated.