L2850 dual stage clutch adjustment?

[ritschner]

If you depress the clutch with the tractor in gear and stopped and the PTO still grinds then you have a dual stage clutch. On a single stage clutch the PTO will always stop when you stop the tractor in gear. If you have the owners manual the clutch adjustment procedure should be there. If not, I believe you may be able to use the procedure that is on page 53 (57 in the PDF) here.
http://www.kubotabooks.com/AutoInde...als/&file=opertors manual-L2650-3650-inc..pdf

 

[Chilly807]

Mine (L3400) gear drive, has the two stage clutch. Another way to tell is if the PTO engages first, then the main drive.
Small cover with two bolts, on the right side of the bell housing behind the loader mount. There are three small bolts, 120 degrees apart.
Your gears will grind if you engage them immediately, it's not a synchro transmission. Instead, depress the clutch pedal, wait 5 seconds, then engage the PTO. This allows the spinning gears to come to a halt, no grind.

Same goes for the main transmission, any time you release the clutch and you're not in gear, the gears will grind when you re-engage unless you depress then wait. It's worse with a hot transmission and thin oil.

Shuttling ahead and back is no problem because the clutch isn't released, same with starting with the clutch depressed.

Sean

 

[rbargeron]

Also, rbargeron looking at the pdf files you attached - the right side plate on my flywheel housing is a rectangle shape like the dual clutch flywheel housing but the actual hole is a oval and much smaller than the plate.

I should have read your post closer - you did say the hole is oval, not the plate. If the tractor's been apart for clutch work, and now it doesn't work right, see if they replaced the travel disk, or both disks, or the whole dual clutch assembly. If they replaced only the travel disk (most common), the pto disk might still be stuck from not being disengaged in a long time. Can try to break it loose by lowering a rotary mower into a dirt mound with the clutch pedal pushed down. There are other ways to load the pto - some of them dangerous! be careful.

 

[brain55]

I'm betting that you don't have an adjustment issue, but that the disc is rusted to the pressure plate. You may be able to get lucky and with the machine off, the pto in gear, and the clutch pedal depressed, use a big pipe wrench or something similar and turn the pto shaft to break it loose. Many times the tractor needs to be split if it is stuck too bad. You may also be able to knock it loose through the inspection plate.

Brian

 

[walleyeboy]

Thanks to each of you for the suggestions/information. I'll check these all out this weekend and get back with results.

 

[skyhook]

I'm betting that you don't have an adjustment issue, but that the disc is rusted to the pressure plate. You may be able to get lucky and with the machine off, the pto in gear, and the clutch pedal depressed, use a big pipe wrench or something similar and turn the pto shaft to break it loose. Many times the tractor needs to be split if it is stuck too bad. You may also be able to knock it loose through the inspection plate.

Brian

My thoughts also.

 

[Chilly807]

If that was the case, the PTO would be always turning once it was in gear, correct? Pushing the clutch in would have no effect on the driven implement.. it would simply keep turning. It took me a while to figure out why my transmission gears ground when engaging from a clutched state. In fact, it was a light-bulb moment that was triggered by an unrelated post here that got me thinking.

 

[rbargeron]

........the PTO would be always turning once it was in gear, correct? Pushing the clutch in would have no effect on the driven implement.. it would simply keep turning......

yes, if the PTO is engaged and the PTO clutch is stuck, the shaft turns with the engine until disengaged - the clutch pedal only affects tractor motion.

 

[Chilly807]

So, that's an easy check.. With the engine stopped, pto engaged, and clutch depressed to the floor, the pto shaft should turn without much effort.

 

[rbargeron]

exactly - it turns by hand if the clutch isn't dragging. If it doesn't turn easily, try a pipe wrench or a bar through a pto shaft u-joint - good way to see whether it just needs adjusting - or serious freeing up.

If adjusting the travel clutch makes the pto clutch begin to drag it's ok to idle the engine way down and quickly shift the pto lever to start the implement turning without grinding gears. Replacement of the travel clutch can be delayed a year or two by balancing the two adjustments. The travel clutch will take up at higher and higher pedal until it starts slipping there too and it's truly time to change it.