One Seventy 3 pt arms stay up all the time
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=152751
Printed Date: 21 Dec 2025 at 7:31am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: One Seventy 3 pt arms stay up all the time
Posted By: Kurzy
Subject: One Seventy 3 pt arms stay up all the time
Date Posted: 05 Aug 2018 at 6:46am
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Howdy, 1967 one seventy gas, start the tractor and 3 pt arms go up all the way. I can get them down by turning the rate of rise screw on the spool and pushing down on the arms but come right back up after letting go! Tried all positions on the levels but no reactions. I thinking something in spool stuck?
Thanks Kurzy
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Replies:
Posted By: MACK
Date Posted: 05 Aug 2018 at 7:04am
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Traction booster linkage stuck. Been talked about many times on here. MACK
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Posted By: Kurzy
Date Posted: 05 Aug 2018 at 7:09am
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Howdy Mack, All linkage moves, find non of the levers are stuck?
Thanks Kurzy
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Posted By: MACK
Date Posted: 05 Aug 2018 at 7:29am
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Does tb spool move in and out all the way free? MACK
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Posted By: Kurzy
Date Posted: 05 Aug 2018 at 9:41am
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Howdy Mack, Sure seems too, I don't have the arms on with the rod going to linkage, would that just happen to cause arms to stay up?
Thanks Kurzy
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Posted By: WF owner
Date Posted: 05 Aug 2018 at 10:10am
Here's a link to a recent post on the same topic (only it's a 180).
http://www.allischalmers.com/forum/allis-chalmers-180-pto-arms-not-lowering-problem_topic152272.html" rel="nofollow - http://www.allischalmers.com/forum/allis-chalmers-180-pto-arms-not-lowering-problem_topic152272.html
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Posted By: Kurzy
Date Posted: 05 Aug 2018 at 10:34am
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Howdy WF, Non of my levers are stuck, new fluid up to fill. Thanks for the past posts.
Thanks Kurzy
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Posted By: WF owner
Date Posted: 05 Aug 2018 at 12:04pm
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It's not the (Traction Booster or Position Control) lever that sticks. It's the valve that it activates that sticks. If the valve sticks in, you can move the lever freely, since the valve that it moves is stuck in. The sure way to find out if this valve is stuck is to see if the three point arms will drop when the engine is off. If they do drop, put the hydraulic lever that activates the three point hitch in the middle (neutral) position and start the engine. If the arms go up slowly, the valve is stuck in.
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Posted By: Kurzy
Date Posted: 05 Aug 2018 at 12:09pm
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Howdy WF, Do you have to take the spool apart to loosen stuck valve?
Thanks Kurzy
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Posted By: WF owner
Date Posted: 05 Aug 2018 at 2:24pm
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Luckily, I never had to take it apart. I sprayed it with Kroil and let it set for a couple days. Then I tapped it lightly and I was able to get it to pop out.
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Posted By: Joe(TX)
Date Posted: 05 Aug 2018 at 5:53pm
It's probably not the valve itself. Most likely it's the actuator lever which operates the spring loaded valve spool. I had the same problem. The position and draft levers also freeze up on their spacer bushing.
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1970 190XT, 1973 200, 1962 D-19 Diesel, 1979 7010, 1957 WD45, 1950 WD, 1961 D17, Speed Patrol, D14, All crop 66 big bin, 180 diesel, 1970 170 diesel, FP80 forklift. Gleaner A
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Posted By: WF owner
Date Posted: 05 Aug 2018 at 7:57pm
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I think he said all the levers move freely.
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Posted By: Kurzy
Date Posted: 06 Aug 2018 at 6:34am
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Howdy, All levers are free! The arms go up when I start the tractor. The only way the arms go down is by turning out the little lock pin lever on the back end the spool that lowers the arms. Just below where the rubber caps are. You can do what ever you want to any of the levers any time tractor running or not it dont lower the arms! Now I must have something different wrong with this problem. Really appreciate the help.
Thanks Kurzy
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Posted By: MACK
Date Posted: 06 Aug 2018 at 7:00am
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Take the shortest spool cover off back of valve. It has a bolt and stop on end. It should be all the way in against stop to lower. If not it is stuck or linkage that pushes it in is stuck. MACK
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Posted By: Kurzy
Date Posted: 06 Aug 2018 at 7:06am
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Howdy. Ok Mack will do.
Thanks Kurzy
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Posted By: Kurzy
Date Posted: 06 Aug 2018 at 2:24pm
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Howdy, Mack took spool cover off, pushed in and out, put back together, no go. Took off again took plunger out this time, put back in, its a go. First couple times 3 pt arms wanted to come up slow but after working up, down arms work like they should. Start tractor arms stay down, pull lever back, up they come, push lever forward with weight on arms, down they go. No rust at all in plunger but yellow fluid even after changing fluid. Bought this tractor late winter so don't know history. Thank you and rest of fellows for great help.
Kurzy
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Posted By: MACK
Date Posted: 06 Aug 2018 at 10:03pm
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The little arm in front of that spool needs freed up. Next time you pull something with 3pt arms will come up unless linkage is freed up. MACK
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