D17 series 1- weak lift of snap coupler arms
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Category: Allis Chalmers
Forum Name: Farm Equipment
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URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=169605
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Topic: D17 series 1- weak lift of snap coupler arms
Posted By: JVON
Subject: D17 series 1- weak lift of snap coupler arms
Date Posted: 29 Mar 2020 at 9:37pm
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I had a plow day I attended this past summer. Beautiful day, great turnout and a good time had by all at the Bos Bro’s historical threshing bee near Geneseo, Il. Anyway, my D17 seemed like when everything was good and warm it would struggle to lift the plow out of the ground. Plow is a 74 snap coupler, 4-14 slat bottom, no hyd tail wheel. I would come to the end of the furrow and move the lift over and the plow would lift enough to get out of the ground but not all the way up. The nose of the shares would still scratch just a little bit. Am I just low on oil or would something be leaking by? When everything is cold or cooling down it would raise the plow all the way up. I haven’t messed with it since this past summer but would like to get it fixed if I go to another one. Any ideas or suggestions?
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Replies:
Posted By: DrAllis
Date Posted: 29 Mar 2020 at 9:47pm
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You start by verifying that the hydraulic system is full of oil and if it isn't, is the transmission/differential overfull ??? Oil missing from one and overfull in the other means the internal lift arm cylinder packing and hose are leaking. Then, plug a 5,000 psi gauge into the remote outlet and raise the Lift/Lower lever to the top and see what your maximum pressure is. Should be more than 3,000 psi. Spec is 3700 psi.
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Posted By: CTuckerNWIL
Date Posted: 29 Mar 2020 at 9:52pm
First thing I would do, is get a 5,000 lbs oil filled hydraulic gauge(anywhere from $15 to $50, yes the cheaper one will be fine). If you were near, Chuck Bos has some at his shop in Hillsdale. I used to work for him. Kevin probably has one at his shop too.
Then you plug the gauge into the remote connection and see what it says as you lift the plow. From what I remember of the WD45 book, it should have about 3200 psi till it dumps the by pass, and drops down to 1500 give or take?
What does your fluid look like? If it looks like chocolate milk, drain it, flush the whole system out and refill with any good Hytran fluid, NOT 303.
You could have a ball or seat leaking in a check valve, you could have one of the pistons stuck in and not doing any good. You could have contaminated fluid that foams up once it circulates a while.
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Lena 1935 WC12xxx, Willie 1951 CA6xx Dad bought new, 1954WD45 PS, 1960 D17 NF
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Posted By: CTuckerNWIL
Date Posted: 29 Mar 2020 at 9:57pm
I was at that show for a few hours on Saturday or was it Sunday?. I plan to be at it again this fall for corn picking. The Bos brothers bought a piece of land, with a pole barn on it, and have been fixing and prepping for the harvest show this year.
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http://www.ae-ta.com" rel="nofollow - http://www.ae-ta.com
Lena 1935 WC12xxx, Willie 1951 CA6xx Dad bought new, 1954WD45 PS, 1960 D17 NF
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Posted By: JVON
Date Posted: 29 Mar 2020 at 10:09pm
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I can get my hands on gauges pretty easy from the shop and check that out. I had decent oil in it quite awhile ago, but honestly I haven’t checked to see what kind of shape it’s in or looks like. I was there Saturday by noon and most of the day Sunday. Rode around with a friend on a D21 when all of the big rigs were laying off lands finishing off the rest of the field. I heard about the new ground. Sounds like a really good deal all around for the show. I tried to bid on a 3 bottom plow this weekend but went for too much I thought. I think it would be a little better match using a 3 bottom.
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