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Case Tractors Discussion Forum
:

1070 pto clutch wont stay enaged

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j hikemper

07-29-2012 05:01:44




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been mowing with a jd 10 ft bush hog,, after a couple hours the pto would disengage even thouh lever had not moved ,,thought it was low on fluid , seemed to me it was happening only on down hill slopes ,,added 3 gallon / really did not help much ,, as the day wore on , it got so bad we parked the case and went after the 4020 deer.. (shock)




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bison

08-06-2012 22:26:35




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 Re: 1070 pto clutch wont stay enaged in reply to j hikemper, 07-29-2012 05:01:44  
Quoting Removed, click Modern View to seeYou need a repair manual.

I just happen to have one for sale :wink:



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mEl

08-06-2012 04:23:13




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 Re: 1070 pto clutch wont stay enaged in reply to j hikemper, 07-29-2012 05:01:44  
Jim , If the PTO spool is staying in position and the pressure is gud, sounds like it's time to replate and reseal it. I have seen many that the piston will bottom against the plate carrier as the linings lose their thickness. You can deadhead the PTO line against a gage to be sure you have flo divider pressure to the pto when engaged, 180- 210 lbs, If so pull it off and redo it. Don't neglect to change the roll pin on the brake release piston. I always replace the brake assembly as I have had to do a couple over cause I didn't and the pto drag with new plates would keep it running. Thanks for the FWDS, I enjoy them. mEl

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Captain

08-06-2012 01:49:51




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 Re: 1070 pto clutch wont stay enaged in reply to j hikemper, 07-29-2012 05:01:44  
Can anyone help with this problem with a Case 1070 - PTO running stationary and then gearbox drops into gear and starts to reverse the tractor - have checked linkages etc but not sure why it is doing it.



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mEl

08-06-2012 04:07:59




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 Re: 1070 pto clutch wont stay enaged in reply to Captain, 08-06-2012 01:49:51  

Captain said: (quoted from post at 01:49:51 08/06/12) Can anyone help with this problem with a Case 1070 - PTO running stationary and then gearbox drops into gear and starts to reverse the tractor - have checked linkages etc but not sure why it is doing it.


Captain, If you have a powershift tractor the shift spool should not be able to get into reverse without the clutch spool being released. If the reverse lockout is working properly it is in a notch in the shift spool and keeps it ( the RL spool)from moving out of position until the lube pressure drops behind it and it withdraws so the spool can move (when the clutch pedal is pushed).
If the tractor is working ok otherwise, I would check the lube pressure on the powershift valve to assure it is at or near 75 lbs with the clutch engaged, dropping to zero with the clutch pushed, and if so I suspect that someone has the shift spool 1/2 turn out of position, there are lockout notches on one side only.
Try to see if you can pull it into reverse without clutching, engine running of course, if you can then the RL spool is not engaging. A remote possibility I suppose would be a cable adjustment that isn't allowing the spool to move far enough to allow the reverse lockout spool to drop into position. A more remote one than that would be a problem with the RL spool itself. If all else checks out, remove the bolt that holds the shift fork, slide it off the pin, turn the spool 1/2 turn and reistall and try it.

The pin on the spool should have a retainer on the end of the pin that goes up if it hasn't been removed and put back wrong.
This post was edited by mEl at 04:28:05 08/06/12.

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Captain

08-06-2012 16:01:06




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 Re: 1070 pto clutch wont stay enaged in reply to mEl, 08-06-2012 04:07:59  
Thanks - appreciate the info - will try these options and let you know.



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