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wd hydralic pressure low
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HudCo View Drop Down
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Joined: 29 Jan 2013
Location: Plymouth Utah
Points: 3915 		Post Options Post Options   Thanks (0) Thanks(0)   Quote HudCo Quote  Post ReplyReply Direct Link To This Post Topic: wd hydralic pressure low
    Posted: 01 May 2017 at 9:51am
hyd . pressure was only getting around 1500 psi last summer raking hay  i have not looked in my service manual  yet or got on the parts look up .   what do i  need to repair ?       i have a gauge mounted on the port were the traction booster line gauge would go was watching it when i was haveing a hard time opening the 14 wheel hay rake  .   not running out of oil  just low pressure 
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Allis dave View Drop Down
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Joined: 10 May 2012
Location: Northern IN
Points: 3054 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Allis dave Quote  Post ReplyReply Direct Link To This Post Posted: 01 May 2017 at 10:12am
You'll get a better pressure reading if you hook a gauge up to the remote.

If that's your actual pressure, you'll have to pull the pump off and reseal it at minimum. Could be that some check valve spring springs are broken. I had a bout 700PSI from my pump. pulled it and 2 spring were broke. If after all that you still have low pressure, you can start adding shims to the unload valve in the pump.
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Butch(OH) View Drop Down
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Joined: 11 Sep 2009
Location: Lucerne Ohio
Points: 3842 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Butch(OH) Quote  Post ReplyReply Direct Link To This Post Posted: 01 May 2017 at 10:16am
AGCO used to sell a couple kits that between them had the bulk of the wearing parts, seals and gaskets included. Once rebuilt you reinstall the pump and check the pressure and then remove it again to shim the relief valve. Been many years since I have seen one that came close to spec for pressure, they all need more shims.
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Ted J View Drop Down
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Joined: 05 Jul 2010
Location: La Crosse, WI
Points: 18943 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Ted J Quote  Post ReplyReply Direct Link To This Post Posted: 01 May 2017 at 10:20am
WHAT tractor is this on?
"Allis-Express"
19?? WC / 1941 C / 1952 CA / 1956 WD45 / 1957 WD45 / 1958 D-17
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HudCo View Drop Down
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Joined: 29 Jan 2013
Location: Plymouth Utah
Points: 3915 		Post Options Post Options   Thanks (0) Thanks(0)   Quote HudCo Quote  Post ReplyReply Direct Link To This Post Posted: 01 May 2017 at 5:47pm
52 wd.        what kit Numbers should i be looking at? i do have a pump off of a 49wd on the shelf but i never seen it run
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Butch(OH) View Drop Down
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Joined: 11 Sep 2009
Location: Lucerne Ohio
Points: 3842 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Butch(OH) Quote  Post ReplyReply Direct Link To This Post Posted: 01 May 2017 at 7:33pm
Go to AGCO parts books and they are listed at the bottom if the hydraulic pump section.
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