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Ac remote Ram problems
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KY View Drop Down
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Joined: 08 Dec 2009
Location: Kentucky
Points: 366 		Post Options Post Options   Thanks (0) Thanks(0)   Quote KY Quote  Post ReplyReply Direct Link To This Post Topic: Ac remote Ram problems
    Posted: 20 Sep 2010 at 2:39pm
I have a 2 inch by 8 inch stroke AC hydraulic remote ram for a high pressure system. It is a one way ram. I replaced the packing and now it will not extend all the way. It would also do this before I replaced the packing so I know that this is not the problem. i have also changed the hose and end and used two different tractors. The ram is getting a full shot of oil. Any ideas???
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KY View Drop Down
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Points: 366 		Post Options Post Options   Thanks (0) Thanks(0)   Quote KY Quote  Post ReplyReply Direct Link To This Post Posted: 20 Sep 2010 at 4:01pm
It has two brass guides and a sleve also. can these get worn and bind up? They do not appear to be in too bad of shape.
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Joined: 20 Jan 2010
Points: 25 		Post Options Post Options   Thanks (0) Thanks(0)   Quote c linn Quote  Post ReplyReply Direct Link To This Post Posted: 20 Sep 2010 at 8:35pm
bump
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Brian S(NY) View Drop Down
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Points: 3377 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Brian S(NY) Quote  Post ReplyReply Direct Link To This Post Posted: 20 Sep 2010 at 8:48pm
Does it have a releif valve on the end with no hose? Are you sure the piston isnt bent? Also how is your tractor hydrualics set up? single double? Brian S
God made man.Sam colt made man equal.
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CTuckerNWIL View Drop Down
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Joined: 11 Sep 2009
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Points: 22823 		Post Options Post Options   Thanks (0) Thanks(0)   Quote CTuckerNWIL Quote  Post ReplyReply Direct Link To This Post Posted: 20 Sep 2010 at 9:48pm
If it is an Allis cylinder, the only thing that stops the cylinder rod from coming out is the external snap ring on the rod. I don't think the guide bushing could bind on the rod to stop it. Now I'll be up half the night trying to figure out what's going on in that cylinder. LOL
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Lena 1935 WC12xxx, Willie 1951 CA6xx Dad bought new, 1954WD45 PS, 1960 D17 NF
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Points: 466 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Roddo Quote  Post ReplyReply Direct Link To This Post Posted: 20 Sep 2010 at 10:46pm
What are the chances there is oil trapped on the other side of the piston causing it to hydraulic lock before it fully extends?
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Points: 22823 		Post Options Post Options   Thanks (0) Thanks(0)   Quote CTuckerNWIL Quote  Post ReplyReply Direct Link To This Post Posted: 21 Sep 2010 at 7:49am
Roddo, there is no other side on an AC cylinder. There is no piston. It is a displacement cylinder and the oil pumped in displaces the rod.
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Lena 1935 WC12xxx, Willie 1951 CA6xx Dad bought new, 1954WD45 PS, 1960 D17 NF
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KY View Drop Down
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Points: 366 		Post Options Post Options   Thanks (0) Thanks(0)   Quote KY Quote  Post ReplyReply Direct Link To This Post Posted: 21 Sep 2010 at 8:34am
No bent piston. One way Allis Chalmers Ram Ram. Oil is not bypassing, like he said there is nothing to by pass.
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Points: 366 		Post Options Post Options   Thanks (0) Thanks(0)   Quote KY Quote  Post ReplyReply Direct Link To This Post Posted: 21 Sep 2010 at 8:35am
I even tried to beat it out with a hammer and chunk of wood but no go.
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Points: 22823 		Post Options Post Options   Thanks (0) Thanks(0)   Quote CTuckerNWIL Quote  Post ReplyReply Direct Link To This Post Posted: 21 Sep 2010 at 9:01am
It seems to me there was only one bronze guide bushing on cylinders I've worked on. It is in a counterbore just below the packing, in the gland. I don't know what could get between the rod snap ring and the gland to block movement. Did you have the cylinder all the way apart or just dig out the packing and replace it? If you haven't had it all the way apart, someone may have assembled it wrong in a previous life. You might want to remove the gland from the cylinder with the rod intact so you can see what is going on.  Charlie

Edited by CTuckerNWIL - 21 Sep 2010 at 9:02am
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Lena 1935 WC12xxx, Willie 1951 CA6xx Dad bought new, 1954WD45 PS, 1960 D17 NF
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KY View Drop Down
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Points: 366 		Post Options Post Options   Thanks (0) Thanks(0)   Quote KY Quote  Post ReplyReply Direct Link To This Post Posted: 21 Sep 2010 at 9:22am
Yes I took it all the way apart. We got the ram new I believe. It has two brass guides and a sleve that fits over them. is it possible the snap ring is hitting these guides?
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Points: 22823 		Post Options Post Options   Thanks (0) Thanks(0)   Quote CTuckerNWIL Quote  Post ReplyReply Direct Link To This Post Posted: 21 Sep 2010 at 9:26am
There shouldn't be any way for the guides to get through the bottom of the gland. The bottom of the gland is where the snap ring contacts to stop travel.  ?????????
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Lena 1935 WC12xxx, Willie 1951 CA6xx Dad bought new, 1954WD45 PS, 1960 D17 NF
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KY View Drop Down
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Joined: 08 Dec 2009
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Points: 366 		Post Options Post Options   Thanks (0) Thanks(0)   Quote KY Quote  Post ReplyReply Direct Link To This Post Posted: 21 Sep 2010 at 10:05am
Thats true. ill take it apart again tonite and check it out again. i will let you know the progress
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