kubota L2650w/everclutch (wet clutch) problem

MVD · Apr 4, 2006

hello,
i have a Kubota L2650, circa 1990/91 with the wet clutch, EverClutch. the clutch will not disengage completly , clutch dragging, and gears grind when shifting. this past winter I separated the tractor and took the clutch to the dealer for evaluation. they told me the clutch was "like new" no problems. the release fork and linkage are in good condition. With the tractor apart, i pushed on the clutch peddal and could see the plates release and become loose however there was still considerable drag on the input shaft. i have the tractor back together now and it seems worse than before. I noticed that at higher engin rpm the clutch seems to work better, gears do not grind. any ideas.
Thanks

rbargeron · Apr 5, 2006

I believe the problem might be in the clutch control linkage or valve body. From the symptoms, a small amount of clamping pressure is still being applied to the clutch, even with the linkage in the "released" position. It might need a linkage adjustment - or it could have a stuck or leaking valve spool. Did your dealer have a manual for this model? I have one for the L4350/L4850/L5450 - maybe similar setup. The fact that it seems worse after splitting the tractor tends to point at the valve linkage. I may be wrong but I think the clutch & release fork, etc. that you could operate with the pedal when the tractor was split was the pto clutch, which is a dry type clutch. The travel clutch is completely hydraulic - with the engine off there's no connection of wheels to engine. There's a little test you could do. With the fwd lever in neutral, jack one rear wheel up off the ground and rotate it by hand with the engine off, both in gear and in neutral - should turn ok by hand. Then, with the trans in neutral, and the other real wheel's brakes LOCKED ON, start the engine, step on the clutch pedal and see if it will go into gear without grinding. If not, the clutch pressure is not venting as it should. pm your email if you'd like some pages from my manual. Of course, if you can't turn the wheel with the engine off, there's another problem that isn't hydraulic at all. As always, prompt cheerful refund if info is bogus. /forums/images/graemlins/cool.gif Take care, DickB

rbargeron · Apr 6, 2006

Hi - looked at the L3 manual again - on these the ever clutch assembly is inside the transmission housing. After splitting the tractor at the bellhousing, you would then unbolt the front transmission housing from the next one and then you could access the 8-disk hydraulic clutch pack from the back of the front housing. There's not much to see looking at it from the outside - need to disassemble the pack (special tools needed).

The hydraulic clutch pack is really two packs - one for forward and one for reverse. If it doesn't disengage its usually because hydraulic oil pressure is getting to one side when it shouldn't. The control valve needs to be in the right position to vent the pressure to both sides to zero. The linkage adjustment is all external - the clutch pedal and/or shuttle lever linkage can get bent a little and cause one side of the pack to pressurize and drag.

When you split the tractor, if there are three arms reaching to the release bearing, that's the pto clutch. On tractors with a dry travel clutch (not the ever clutch) there are six arms. Hope this is useful. Take care, Dick B

pvcarey · Apr 13, 2006

I just removed the everclutch on my l2650, when I split the tractor, there was a splined shaft into the flywheel, I removed the alum. cover (trans side), removed the clutch linkage from the throw out fork, then the clutch pack just pulled strate out, mine was mechanical not hyd. the linings were shot, and that let the inner spline rub on the back of the outer hub, and this is what I believe caused it to grind when I put into gear. when I get new disk pack installed will report back if it fixed it.
Ron

rbargeron · Apr 14, 2006

Ron - it's good that you have shed some light on this - I was completely on the wrong page - the L2650 is built differently. Does your L2650 actually have an "ever clutch" decal on it?

pvcarey · Apr 16, 2006

Yes, the clutch pac looks like a clutch pac from a automatic trans or motor cycle, it is wet. what I suspect that you were looking at was the shuttle shift. I think that my parts will be monday so ready to start putting it back togeter, I just bought it last week want to see what it can do.
Ron

pvcarey · Apr 22, 2006

I have the new clutch in and it stopped the grinding when I try to put ot into gear, so my answer to the start of this string is, if the clutch is to thin it can cause the trans to grinding when going into gear.
Ron