970 powershift troubles

[D&C Farm]

grandfather has a 970 with powershift the tractor will move in first range gears 1,2,3 will move in fourth but acts like a tractor with clutch slipping any incline it will stop does not move in 2nd or 3rd range powershift what kind o trouble are we looking at and is it to costly to fix trouble didn't start all at once gradually lost the gears thanks for any input and advice

 

[1370rod]

With the info you provided my guess would be broken bolts holding C2-C3 hubs or a leak in those circuits. Cost? if a simple fix and not many parts and it has to go to
town, parts and labor a couple grand would be about the least and higher is very possible, Rod.

 

[mEl]

(quoted from post at 23:56:50 07/18/18) With the info you provided my guess would be broken bolts holding C2-C3 hubs or a leak in those circuits. Cost? if a simple fix and not many parts and it has to go to
town, parts and labor a couple grand would be about the least and higher is very possible, Rod.

I would take a pressure reading of the power shift circuit and look for differences between ranges. Not at all to dispute Rod but it could be that the torque limiter has started to fail and losing its lining, the reason that I suggest that is that the slippage developed gradually over a period of time and bolt failure happens more suddenly generally, Rod's idea is the most common and very well could be the issue but I would definitely test before splitting.

 

[1370rod]

Hi Mel, I gave that torque limiter some thought also, but he mentioned no drive at all in 2+3 powershift and normally there should be a little. But regardless it has to
be split and I think they would be wise to check both the limiters and PS at that time. Rod.

 

[mEl]

(quoted from post at 14:07:08 07/19/18) Hi Mel, I gave that torque limiter some thought also, but he mentioned no drive at all in 2+3 powershift and normally there should be a little. But regardless it has to
be split and I think they would be wise to check both the limiters and PS at that time. Rod.

Rod, I reread his original post and am inclined to agree with your suggestion, the part that threw me was that the problem developed gradually as most times when the bolts break it is a more sudden failure. At any rate the starting point is the same as you said, hopefully the gentleman will keep us posted.

 

[D&C Farm]

I'll get a manual will an I&T for the tractor have the procedure for checking the hydraulic circuits I don't have a shop big enough to split tractor in could any body make a rough guess as to how much it could cost

 

[DKase]

Don't mess with an IT! Get an original Case service manual for the tractor. Early and late 70
series is a different procedure to split. Case manual will take you through everything step by
step.

 

[D&C Farm]

had a bad powershift cable replaced it changed filters oil is dirty going to change it and put in hytran and new filters again can transmission fluid or something else be added to the old oil to help clean the system before I change oil having some issues with gears 3 and 4 slipping in range 1 work normally in ranges 2and 3