WD Hold Position Valve - That was Easy

Message Topic Search Topic Options Post Reply Create New Topic Printable Version Translate Topic

   The hold position valve started leaking quite profusely at the camshaft outer O-ring yesterday.
Removed two bolts, disconnected the linkage and one hose and had it off and in my hand in minutes.
Four O-rings later, buttoned it back up with nary a leak.
This is the first that I have had to touch the hydraulics since my Dad gave me the job of rebuilding the whole system back in '58 when I was a teenager in high school.
We resurrected it from a barn fire back then.

	This site is not affiliated with AGCO Inc., Duluth GA., Allis-Chalmers Co., Milwaukee, WI., or any surviving or related corporate entity. All trademarks remain the property of their respective owners. All information presented herein should be considered the result of an un-moderated public forum with no responsibility for its accuracy or usability assumed by the users and sponsors of this site or any corporate entity.
	The Forum	Parts and Services	Unofficial Allis Store	Tractor Shows	Serial Numbers	History

Author	Message Topic Search Topic Options Post Reply Create New Topic Printable Version Translate Topic
Brian G. NY Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 12 Sep 2009 Location: 12194 Points: 2256	Post Options Post Reply Quote Brian G. NY Report Post Thanks(0) Quote Reply Topic: WD Hold Position Valve - That was Easy Posted: 18 May 2012 at 7:10pm
	The hold position valve started leaking quite profusely at the camshaft outer O-ring yesterday. Removed two bolts, disconnected the linkage and one hose and had it off and in my hand in minutes. Four O-rings later, buttoned it back up with nary a leak. This is the first that I have had to touch the hydraulics since my Dad gave me the job of rebuilding the whole system back in '58 when I was a teenager in high school. We resurrected it from a barn fire back then.

Sponsored Links

Jacob (WI,ND) Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 11 Sep 2009 Location: Kenmare, ND Points: 1248	Post Options Post Reply Quote Jacob (WI,ND) Report Post Thanks(0) Quote Reply Posted: 03 Jun 2012 at 12:54pm
	So I went through this this past weekend myself, I had to take it all apart to free everything up and get it moving. Noted that the o rings and seals needed to be replaced, but didn't have any on hand so put it all back together for now. So I take it that there is nothing special about the o rings and seals then, and any the same size will work? On a separate question, how should the hydraulics work? when adjusted to the hold position, we can now feel the detent in the middle, but something must still need adjusting because the up is not really working correctly and down is FAST. Should down be able to be slow like a D15 II's system, or is this not possible because of different systems? We just keep comparing it to Dad's D15 and trying to get it to work like it does.
	Jacob Swanson 1920 6-12; 1925,1926 20-35 longfenders; 1925,1926 15-25's; 1927,1929 20-35 shortfenders; C; B's; IB; WC's; WD; WD45

David Grubb Members Profile Send Private Message Find Members Posts Add to Buddy List Bronze Level Joined: 14 Sep 2009 Location: Rochester, Il Points: 133	Post Options Post Reply Quote David Grubb Report Post Thanks(0) Quote Reply Posted: 04 Jun 2012 at 10:48am
	The only control over the speed of the lowering is by how far you move the hand lever from the detent position. If you look in your operators manual you will see a manual stop that can be clamped on the quadrant. It was originally intended to be use when you had the grain drill mounted. I use mine to keep from dropping my mower too hard. We need more info on the up speed issue. About the hold function; the rams must not lower if you raise them, leave the hand lever up, shut the tractor off. If they lower your hold valve is leaking by the check ball.
	Dave