Welcome! Please use the navigational links to explore our website.
PartsASAP LogoCompany Logo Auction Link (800) 853-2651

Shop Now

   Allis Chalmers Case Farmall IH Ford 8N,9N,2N Ford
   Ferguson John Deere Massey Ferguson Minn. Moline Oliver

Case Tractors Discussion Forum

Case 970 powershift reverse

Welcome Guest, Log in or Register
Author  [Modern View]

04-22-2021 15:48:12

Report to Moderator

I have a late 70s Case 970 agri King, I left it set over the winter and now my reverse doesnt seem to work. All the other gears seems to function beautifully but when I put it in reverse nothing happens.... Im not even sure where I should start.

[Log in to Reply]   [No Email]

04-24-2021 15:28:19

Report to Moderator
 Re: Case 970 powershift reverse in reply to Randolfflyd, 04-22-2021 15:48:12  
[quote="CVPost-used red MN"](quoted from post at 15:03:51 04/24/21)
I understood a lot of what Rod said, I have some experience on tractors. Mine is a cab 970 with a loader. I crawled under the right side and adjusted the linkeage so that the only gear it could possibly shift into was reverse. Seemed like it was a good was to see if that was the issue, it wasnt but that narrows it down. Im going to open up access to the C4 next when I have time. Im usually too busy on the farm to work on it but Im slowly putting in an hour here and there.

[Log in to Reply]  [No Email]
used red MN

04-24-2021 15:03:51

Report to Moderator
 Re: Case 970 powershift reverse in reply to Randolfflyd, 04-22-2021 15:48:12  
Hello Randolf welcome to YT! Here is the deal, since you are new to the forum we have no idea what your mechanical knowledge or experience is. So in this case with that unknown I try to start out simple. Rod is very knowledgeable on Cases and probably goes to sleep dreaming of a good old neck jerk from a powershift. You on the other hand may think what he spit out was garble. I have been away from being around tractors quite a while, so I dont know exactly how bad it is to pull the floor up on a cab tractor. Now if you have a open station tractor a couple bolts and you can pull the floor access panel right out. Once you get that out with the engine off move the Powershift lever back and forth and you will see what is moving. The motion is transferred from the lever to the control spool by a push pull cable. So make sure there is not a bunch of dirt and crud limiting the motion of the valve and linkage on the front of the shift valve box. Lube up the pivots etc. I prefer just motor oil in a pump oil can. Now get a long screwdriver or broom stick. Start it up and get to an open area. Put it in gear range 1 and put the PS in reverse, now see if you can move the spool valve farther in the direction the lever moved it. Now see if it will back up. This is what Rod was referring to. If that works it is likely just adjustment. One thing I know that happens to cabless tractors if they set outside is the shift cable gets moisture in it and the metal strands in the outer housing rust and collapse. Without a the strength of the steel in the housing the cable does not transfer the motion properly. So with that said if you adjust the cable to pull it in reverse it may then not shift into 3rd PS. So get under the right side of the cab and have a helper shift the PS lever and make sure nothing looks bad on the cable especially the part that loops down. Another thing while you are right there make sure the clutch linkage is free and lube the linkage as well. It is important that the spring can easily pull it all the the way up against the stop. All this is just the tip of the iceberg but a good starting point.

[Log in to Reply]  [No Email]

04-23-2021 06:09:01

Report to Moderator
 Re: Case 970 powershift reverse in reply to Randolfflyd, 04-22-2021 15:48:12  
This may seem kinda silly but first make sure the the control spool is actually being completely moved into the reverse detent when the shift lever is pushed into reverse position. On more than one occasion a customer called complaining of losing reverse only to find out what actually happened because of linkage binding or adjustment the control spool was not being moved completely into reverse detent. Rather because the spool stops midway between first and reverse you find a false neutral. Tractor does not move but can create a dangerous condition, a slight movement of the spool in or out can cause the tractor to jump and take off. Rod.

[Log in to Reply]  [No Email]

04-23-2021 06:08:23

Report to Moderator
 Re: Case 970 powershift reverse in reply to Randolfflyd, 04-22-2021 15:48:12  
Does the engine surge when you depress the clutch? 4 speed shifter position does not matter if powershift testing. Make sure nothing is interfering with the clutch pedal going clear down and clear up. Do the hydraulics work in R powershift, for example, will the arms raise with power or will it lift something with a remote cylinder. Pressure to C4 clutch can be checked on the trans valve top cover, there is a port marked C4, install a gauge (600 LB ) would be good. Should be close to 200 lbs clutch pressed down or 200 lbs in R. You said it works normally in fwd power shifts so C2 should check ok as it is used in other forward ranges. C2 and C4 are the two clutches required for reverse

[Log in to Reply]  [No Email]
[Options]  [Printer Friendly]  [Posting Help]  [Return to Forum]   [Log in to Reply]

Hop to:

We sell tractor parts!  We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]

Home  |  Forums

Copyright © 1997-2023 Yesterday's Tractor Co.

All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy

TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.

Yesterday's Tractors - Antique Tractor Headquarters

Website Accessibility Policy