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WD 45 hydraulic pump help
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Chris View Drop Down
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Joined: 12 Sep 2009
Location: Indiana
Points: 155 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Chris Quote  Post ReplyReply Direct Link To This Post Topic: WD 45 hydraulic pump help
    Posted: 24 Sep 2022 at 4:51pm
I put new seals in pump and holding valve.I have had this thing off 4 times checking to make sure everything is in order and clean.When i start tractor up the pump builds around 3500 psi. The pump does not sound right and it will not let lift arms go back down.I don't know what to do.Any help would be much appreciated!
Thanks,
Chris
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DrAllis View Drop Down
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Joined: 12 Sep 2009
Points: 21903 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DrAllis Quote  Post ReplyReply Direct Link To This Post Posted: 24 Sep 2022 at 7:30pm
Sounds like the pump is pumping continually.  The hold valve doesn't shut the pump off. It only holds a load or lets the load down. Screw "A" must be screwed into the little divot on the side of the pump. Screw "D" needs to be screwed clear "IN" towards the rear of the tractor. Then see what you've got.
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Chris View Drop Down
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Bronze Level Access


Joined: 12 Sep 2009
Location: Indiana
Points: 155 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Chris Quote  Post ReplyReply Direct Link To This Post Posted: 24 Sep 2022 at 8:39pm
Thabk you for helping. I did try what you said, the pump did not sound as bad but lift arms still did not release
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MACK View Drop Down
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Joined: 17 Nov 2009
Points: 7664 		Post Options Post Options   Thanks (0) Thanks(0)   Quote MACK Quote  Post ReplyReply Direct Link To This Post Posted: 24 Sep 2022 at 8:50pm
Sounds like spool valves are in wrong or one is hanging up.                   MACK
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