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49 wd hydraulic pump pressure
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G226WD View Drop Down
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Joined: 06 Jul 2011
Location: Canada
Points: 33 		Post Options Post Options   Thanks (0) Thanks(0)   Quote G226WD Quote  Post ReplyReply Direct Link To This Post Topic: 49 wd hydraulic pump pressure
    Posted: 2 hours 18 minutes ago at 3:18pm
Hi everyone say ive got a 49 wd the pump has been in a cardboard box for a few years and I put it back on just recently pump says 1800psi then 1500psi then now its 1000psi i replaced the long small spring the one for high pressure  the old one made the pump chatter when i engage it  id like to know about the shims on the top as well i want to get just under 3000psi if i can  need a little help thanks
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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: 1 hour 15 minutes ago at 4:21pm
Get a WD or WD45 service manual. It explains the pump very well. I rebuilt mine about 12 years ago.

You need to pull out all 4 of the check valves on top and make sure the springs are good. I think 2 of mine were wore through and I replaced them all and also reseated the balls into the seat. Once that is done and all your orings are replaced. Then you can see where your pressure is at and start adding shims to the unload valve if needed.
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Joined: 06 Jul 2011
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Points: 33 		Post Options Post Options   Thanks (0) Thanks(0)   Quote G226WD Quote  Post ReplyReply Direct Link To This Post Posted: 34 minutes ago at 5:02pm
can i do this while the pump is on the tractor also where in the pump are the orings you are refering to.
i have some parts and pieces for the pump here havent had it mind in pieces in a while part numbers would help  i do not have a service manual    thank you
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