Hydraulic Unloader Valve.

Hi Form Members. Today I,m on the bum.. I,m looking for the latest design unloader valve to install in my 1956 Fordson Major Diesel. Presently it has the original old design . Part # E1ADKN-994601. They were used till August of 1958. After that date E1ADDN-994601 was used in production of the Fordson Power Major & some late production Fordson Majors .. . Both designs used the same part # seat. E1ADKN-994608. I live in Canada & can,t find a parts source. Not even on EBAY. In summary , if anyone can tell me where I can get the PFM relief (unloader) valve it would be appreciated. .Used is fine if in usable condition. These Power Major valves had 6 holes drilled thru the body around the tip to prevent the necessity of a re-set of the control lever , to reseat the un-loader valve , to re-gain working hydraulic pressure. Even if a new design is,nt available I can modify the old style valve to prevent re-set , if the newer one is,nt available. Hoping someone may have what I,m looking for in their garage or in the junk. Il,ll post a picture of the parts.

(quoted from post at 16:10:01 07/11/21) Hi Form Members. Today I,m on the bum.. I,m looking for the latest design unloader valve to install in my 1956 Fordson Major Diesel. Presently it has the original old design . Part # E1ADKN-994601. They were used till August of 1958. After that date E1ADDN-994601 was used in production of the Fordson Power Major & some late production Fordson Majors .. . Both designs used the same part # seat. E1ADKN-994608. I live in Canada & can,t find a parts source. Not even on EBAY. In summary , if anyone can tell me where I can get the PFM relief (unloader) valve it would be appreciated. .Used is fine if in usable condition. These Power Major valves had 6 holes drilled thru the body around the tip to prevent the necessity of a re-set of the control lever , to reseat the un-loader valve , to re-gain working hydraulic pressure. Even if a new design is,nt available I can modify the old style valve to prevent re-set , if the newer one is,nt available. Hoping someone may have what I,m looking for in their garage or in the junk. Il,ll post a picture of the parts.

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This post is a reply to my first post on July 11/21. I lucked out just recently and found a Fordson Major ,on the junk, that although equipped with standard 3 point hitch hydraulics ,(minus the rear linkage), had spent its entire life as a backhoe ,, using a front mounted , crank driven hydraulic pump. The valve bank for the 3 point hitch was like new inside.. Although not the Fordson Power major design unloader valve I was searching for , I discovered a You Tube video showing how to modify the early unloader valves to give the very same characteristics as the newer design used in the Power Major. This guy is bang-on.. I just completed the modification today & am very happy with the results. The author of the video mentions a slight gain in hydraulic pressure after modification. Again he was right on. My pressure test showed a 300 P.S.I. gain , up to 2500 PSI. I re-adjusted my unload pressure to 2200 .. I,m very happy indeed. I recommend for you guys to watch this You Tube video. Its only 4 to 5 minutes long.. Anyway ,, thanks for looking.

This post was edited by MarB on 08/10/2021 at 05:30 pm.