7020 PTO won't disengage
Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Farm Equipment
Forum Description: everything about Allis-Chalmers farm equipment
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=132544
Printed Date: 06 Jun 2025 at 7:37pm
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Topic: 7020 PTO won't disengage
Posted By: WD45Diesel57
Subject: 7020 PTO won't disengage
Date Posted: 12 Dec 2016 at 8:58pm
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My 7020 i put it on the snow blower this year, and now if I have the blower lifted I cannot disengage the pto until I set the blower down taking load off the lift arms. Anybody know what's causing this?? ------------- 1-B's, 2-C, 2-CA's,2-WF, 1-WC,1-G, 3-WD's, 2-WD45, 1-RC, 1-D17 Diesel, 1-D14, 2-D15,1-D17 row crop,1-D19 gas and All Crop 40,60,66,72,90 and 100 |
Replies:
Posted By: Roscoe62
Date Posted: 13 Dec 2016 at 4:53am
I am not the expert, but it could be a problem with a bent bracket, #6 below: |
Posted By: MACK
Date Posted: 13 Dec 2016 at 6:38am
| Could need a new cable. MACK |
Posted By: Roscoe62
Date Posted: 13 Dec 2016 at 6:44am
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Roscoe.
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Posted By: DrAllis
Date Posted: 13 Dec 2016 at 7:21am
| That #6 absolutely cannot be bent rearwards at all !! I have straightened many over the years and welded in a brace to keep them from bending again. Steady hand pressure to release....not just force it. |
Posted By: tbran
Date Posted: 13 Dec 2016 at 11:00am
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had one do this many years ago - the pto valve has 2 sump drains, if one is plugged with a sheared oring or gasket or other item the pressure from a remote or 3 point lift ram will build up in the pressure reducing circuit - this will cause harsh engagement and difficult disengagement. The solution is to remove the pto valve and clean the sump passages in the tractor and or the valve... if the CABLE is not the issue. By saying you can shut it off when the lift is lowered triggered this memory...
------------- When told "it's not the money,it's the principle", remember, it's always the money.. |
Posted By: MACK
Date Posted: 13 Dec 2016 at 9:07pm
| There were some that we filed a grove in piston that holders lever engaged. MACK |
Posted By: WD45Diesel57
Date Posted: 13 Dec 2016 at 11:02pm
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Thanks for all your input guys, I had it out again tonight to move more snow and did like the Dr mentioned I firmly but slowly pushed the lever and with the lift arms up it disengaged. I guess like any cable it can't be forced. Thanks again for the help!! ------------- 1-B's, 2-C, 2-CA's,2-WF, 1-WC,1-G, 3-WD's, 2-WD45, 1-RC, 1-D17 Diesel, 1-D14, 2-D15,1-D17 row crop,1-D19 gas and All Crop 40,60,66,72,90 and 100 |