2290 skids when clutch from powershift

Tractor wheels slide when clutch is pushed with powershift in high or intermediate. Unsure what to do?

Avoid using the clutch pedal to shift down. Instead shift down one at a time to 1 and them depress clutch pedal. That should stop the tire sliding, if not, the C2 restrictor screw might need a little backing out, Rod.

Thanks. Recently read to avoid downshifting with clutch. Which when downshift by hand, then clutch once in low, tires do not skid. Still want to fix as sometimes forget and use the clutch. Plan on adjusting C-2 tmrw morning. Is 1/4 to 1/2 turn counter clockwise too much, not enough, or just try it out?

Best thing is to learn to throttle back to 1000-1200 rpm when you can and then powershift to 1 before clutching.

I'm a slow learner and going back and forth from 7140 to 2590 doesn't help learn the new habits I need for the 25. Usually make the mistake when in the yard, out in the field it's easier to anticipate and use the throttle for speed control because of all the torque available from the 25. It looks like a coal burning locomotive at times....

(quoted from post at 19:54:45 10/03/14) Avoid using the clutch pedal to shift down. Instead shift down one at a time to 1 and them depress clutch pedal. That should stop the tire sliding, if not, the C2 restrictor screw might need a little backing out, Rod.

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Rod,

Would not C3 hanging in to long cause the overlap to be to great , Coming down through to range 1-- C2 is coming on and charging the retard spool through the ball and spring, so its restrictor should not be in play till the C2 clutch is dumped by the control spool. The spools return to shutoff rate is determined by the orfice needle. My thought would be to get C3 out of the picture quicker as it is the clutch being dropped and that would be changed by increasing the decay rate of C3 pilot spools return to shutoff. Wheel slide indicates a 3 clutch engagement and we are not involving the clutch spool, just a quick downshift. Just bouncing that off you to get your perspective.

Edited 4 times as some of my own thoughts made no sense, but I think I've got it now lol.
mEl

Yes you are correct Mel, I did not explain my thoughts well enough. When I mentioned C2 restrictor I figured the tractor was shifted back into 1 and with it in that position the clutch is depressed and the tires should not slide unless there is a adjustment issue with C2. Thanks for info, Rod.

If you down shift with clutch C3 might need attention like Mel mentioned, if you are shifted to 1 and push clutch and tires do not slide C2 might be OK, Rod.

Had changed hydraulic oil and filters, along with replacing worn 'clutch pads?' to repair PTO that had quit working. Tried it out today, and on light work, all shifting seams fine.

1978,

One thing that should be noted is that the retard adjustments before mentioned are critical to the oil temp. Retard set up on hot oil will be tighter when the transmission is cold. We have the "blinky box" for setting clutch overlap but usually just set them up by feel. The thing to remember is that C2 retard holds the C2 clutch in as C3 is coming on to make a smooth transition from 1--2 powershift. The same is true coming from 2---1, the C3 retard delays the disengagement from C3 till C1 is fully applied. C2 is also dropping out on the 3---2 shift so its retard wold be working there as well.

As for clutching, I believe I remember from my Racine days under Ken Reimers on the RPS 34 that the C2 shuttle ball serves to take C2 out of the shift mode and take it to a maser clutch mode where oil pressure is modulated by clutch spool position and the point and spring setup in the end of the clutch spool. In shift mode the pump pressure comes by the pilot spool and directly to the clutch piston. It must be modulated for smooth clutch engagement, that is why the change in how C2 is applied I have not looked at a flow print for years but I believe that the retard circuitry is out of the circuit till the C2 shuttle ball is back in C2 clutch mode but don't beat me up to bad if I've got that wrong.