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WD hydraulic pressure
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Nathan (SD) View Drop Down
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Joined: 11 Sep 2009
Location: Day County SD
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    Posted: 15 Sep 2019 at 10:01pm
I tapped into the hold valve with a gauge. I used the front port on the clutch pedal side.
The gauge shoots up to 2800-3000 psi when the lift arms top out. Then with the valve handle still in the full up position, the gauge drifts down to about 1800 psi after 10-20 seconds. Is this correct? Or is it a problem?

This WD won't lift much on the rear is the reason I even checked it.
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MACK View Drop Down
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Joined: 17 Nov 2009
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Should be around 3600, otherwise normal.        MACK
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John426 View Drop Down
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Hi

Interesting, do you an idea what pressure it is for an ED40?
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CTuckerNWIL View Drop Down
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Joined: 11 Sep 2009
Location: NW Illinois
Points: 22825 		Post Options Post Options   Thanks (0) Thanks(0)   Quote CTuckerNWIL Quote  Post ReplyReply Direct Link To This Post Posted: 16 Sep 2019 at 5:21pm
A .010 shim on the unloader spool will bring it right back to original if everything else is right.  My 45 is running about the same as yours. I left it, because I was too lazy to take the pump off for the 3rd time to get it back to 3500PSI.
http://www.ae-ta.com
Lena 1935 WC12xxx, Willie 1951 CA6xx Dad bought new, 1954WD45 PS, 1960 D17 NF
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