B2620 PTO questions

[tractchores]

What implement are you running? That has a lot to do with it. When I run my woodchipper, the massive flywheel puts quite a load on the PTO shaft. In fact, if you were to suddenly throttle back the engine, the chipper's flywheel would hold the revs up.

x2 I've noticed the same thing with my chipper. I throttle down to idle slowly allowing the engine to slow the spinning, then depress the clutch. If its still spinning you get grinding, if its not you don't. I don't know for sure, but I don't think there is a brake on the PTO's on these machines, so with the clutch in it spins freely with very little friction (that's why you can turn it by hand to line up the spindles when attaching something)

 

[prevent]

Hmm, now im having fuzzy thoughts if it does that or not... but i do know i don't shift the mid pto off until i see the mower stop spinning

I'll have to double check next time im out at the farm. only implement i have for pto is MMM

 

[Paystar]

What implement are you running? That has a lot to do with it. When I run my woodchipper, the massive flywheel puts quite a load on the PTO shaft. In fact, if you were to suddenly throttle back the engine, the chipper's flywheel would hold the revs up.

Wallenstien BXM32 chipper/shredder, 60"mm mower, 51" rear snowblower.

 

[JCByrd24]

Glad to see someone else echo'd my response of "do not shift slow"...Coming out of gear with a quick and confident motion of the lever should be no problem even with an implement still spinning and the clutch in. Going slow in the same situation is much more likely to grind.

 

[grizzjeeper]

Its not a slow shift scenerio. It will continue to grind until the implement stops. Its as if there is not enough clearence in the neutral position and is trying to engage the rear 540 to 960.
Its like its caught between ranges and nicking the 960 side or the 540 side and no in between until PTO is stopped.


Another thing I just notices is with clutch in I can still move tractor for another few feet before the hydro is disengaged... hmm. I am using a bush hog so silimar to a chipper the rotating mass keeps turning. I have never expirienced this on ANY tractor and I have had several.

 

[buck boost]

Its not a slow shift scenerio. It will continue to grind until the implement stops. Its as if there is not enough clearence in the neutral position and is trying to engage the rear 540 to 960.
Its like its caught between ranges and nicking the 960 side or the 540 side and no in between until PTO is stopped.


Another thing I just notices is with clutch in I can still move tractor for another few feet before the hydro is disengaged... hmm. I am using a bush hog so silimar to a chipper the rotating mass keeps turning. I have never expirienced this on ANY tractor and I have had several.

It sounds to me like a sticky clutch. If the clutch is not disengaging completely, that would explain the grinding when attempting to engage the pto. Is there a clutch pedal adjustment? (My manual isn't readily available at the moment)

 

[sandyc]

There is a clutch adjustment according to my manual. The only implement I run off the PTO is a snow blower and I have not heard any grinding either going into or out of gear

 

[tk tom]

Forgive me for a slight tangent, but what is the need for a PTO clutch on some models and not on others? I assume the tractor is an HST? There is no clutch on mine, just a PTO lever. Is this just a 20 series feature?

 

[s219]

Not sure I'd call it a feature, but the older HST B and L series Kubotas have a clutch and clutch pedal. It's only the more recent B models that are doing away with the clutch pedal. I don't know how the mechanicals are setup to allow that, or whether or not the clutch is still there but actuated differently. Perhaps they have put some sort of synchronizers that allow changing speed ranges and PTO engage/disengage without a clutch?

 

[grizzjeeper]

Is it dual stage clutch? Punching clutch immediately disengages implement but not hst. I can go ahead another foot or so which clutch in then it disengages. Interesting at that point implement rotating or not no grind!