Farm Equipment - D-10 Series III 3-point hydraulic cylinder

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D-10 Series III 3-point hydraulic cylinder

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Category: Allis Chalmers
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URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=143780
Printed Date: 31 May 2025 at 10:57pm
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Topic: D-10 Series III 3-point hydraulic cylinder

Posted By: Jeff K
Subject: D-10 Series III 3-point hydraulic cylinder
Date Posted: 24 Oct 2017 at 7:21pm

Guys, one of the hydraulic cylinders on my 3-point is leaking. It leaks under the pressure of having to hold up the arms. In other words over a week it has leaked enough to drop it to the bottom of the travel. So.....I took both cylinders apart and then bought new o-rings and seals. Problem is that one of my plungers has some little "digs" in it. They are very slight but they may be an issue. If the cylinder leaks because of them what options do I have. Can I buy new cylinders that are close? Can I get just a new plunger? Does anyone have any experience with this issue?

D-10 Series 3

Jeff

Thanks

Replies:

Posted By: drobCA
Date Posted: 24 Oct 2017 at 8:06pm

if I recall correctly, when I did new seals & o rings on my CA rams it also had a couple of small scars (but indents only, no "bumps") which so far have not caused any problems.

the rams work great and hold at any height.

BUT... I am definitely no expert.

if you can manage to get a couple of clear pictures on here, it will help the people who know what they're talking about give better advice.

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3 Ford 8N's I loan to neighbors, but the '52CA, '41B and little B1 I do not.

Posted By: DiyDave
Date Posted: 25 Oct 2017 at 4:49am

If you measure everything (stroke/length/pin size/hose locations) and know the operating pressure of the cyl, (from the specs, in the manual), Surpluscenter.com might have a match...

Posted By: Calvin Schmidt
Date Posted: 25 Oct 2017 at 4:52am

You can have the rod re-chromed by a hydraulic shop.

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Nothing is impossible if it is properly financed

Posted By: Gary
Date Posted: 25 Oct 2017 at 5:22am

Was the hydraulic oil actually leaking out the end of the cylinder and dripping on the floor ?

If not, then the leak could be in the hydraulic valve control assembly.

Gary

Posted By: JoeO(CMO)
Date Posted: 25 Oct 2017 at 5:38am

When I had my D10 III cylinders apart I chucked the small end in the lathe and cleaned and polished with #600 or 800 wet/dry paper. This was in '85-'86, it's a '65 model year, worked fine, not 100 pct and a little damp today but a little seepage everywhere I put new seals/gaskets. So far I've another 30 years on it, and might go for another redo.

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Posted By: Charlie175
Date Posted: 25 Oct 2017 at 6:58am

Where did you find seals? I need to redo mine

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Charlie

'48 B, '51 CA, '56 WD45 '61 D17, '63 D12, '65 D10 , '68 One-Ninety XTD

Posted By: drobCA
Date Posted: 25 Oct 2017 at 7:28am

Charlie -

I took one whole assembly plus the seals off the other in to a place that specializes in seals of all kinds. (in Riverside, Calif.). I also had the part number.

The part number did no good, they ignored everything else and just matched the sample seal.

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3 Ford 8N's I loan to neighbors, but the '52CA, '41B and little B1 I do not.

Posted By: Charlie175
Date Posted: 25 Oct 2017 at 11:11am

Thanks

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Charlie

'48 B, '51 CA, '56 WD45 '61 D17, '63 D12, '65 D10 , '68 One-Ninety XTD