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WD/WD 45 hydraulics

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exSW View Drop Down
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Joined: 21 Jul 2017
Location: Pennsylvania
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Post Options Post Options   Thanks (0) Thanks(0)   Quote exSW Quote  Post ReplyReply Direct Link To This Post Topic: WD/WD 45 hydraulics
    Posted: 03 Dec 2022 at 2:15pm
I've bought this assembly in order to get the return to sump fitting on the left side fill location. But what is it's function as opposed to the old single line plumbing. My manual doesn't show anything like this.


Edited by exSW - 03 Dec 2022 at 2:16pm
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sparky View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote sparky Quote  Post ReplyReply Direct Link To This Post Posted: 03 Dec 2022 at 4:52pm
Transport valve. It was an option.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote exSW Quote  Post ReplyReply Direct Link To This Post Posted: 03 Dec 2022 at 5:25pm
Seems like a lot just to lock the head up.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote DrAllis Quote  Post ReplyReply Direct Link To This Post Posted: 06 Dec 2022 at 6:31pm
The transport valve may have been mis-named. Its intent (when adjusted correctly) was to allow you to pull a tandem disc and use the "Traction Booster" system to transfer implement weight to the rear wheels when desired. The first (memory) 1,000 or 1,500 psi of hydraulic pressure goes to the lift arms to pull up on the traction booster drawbar, giving you more traction. When you lift the disc at the end of the field (transport) this initial pressure is exceeded and hydraulic oil flows to the cylinder on the disc wheels. So, the single acting hydraulic system works in two-stages by initial pressure going to the lift arms only and second stage to the implements wheels. It was an OPTION on WD45's and D-series models. We had one of these Traction Booster drawbars on a 13 ft 6 inch tandem disc and a D-17 WF with DUALS on the rear !!  You cannot believe the wet fields I could get into to dry them out with that set-up !!
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Post Options Post Options   Thanks (0) Thanks(0)   Quote exSW Quote  Post ReplyReply Direct Link To This Post Posted: 06 Dec 2022 at 7:59pm
Thank you for the explaination. Makes perfect sense now. Why did they put a seperate return to sump line? 
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Post Options Post Options   Thanks (0) Thanks(0)   Quote DrAllis Quote  Post ReplyReply Direct Link To This Post Posted: 06 Dec 2022 at 9:03pm
The optional valve has a thumb knob to set it for Traction Booster position or regular hydraulics. There are times some oil has to return thru that line to sump for the valve to function as designed.
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