WD/WD-45 Hydraulic Pump Questions

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

   1. For all of the balls/seats, what is the best way to check them? Visual inspection, and then is there a good way to pressure test them individually?
2. Do you need to seat new balls to old seats (if I assume at least some of my old seats are okay)? EDIT: To clarify, using a hammer and drift... I know this needs to be done with new seats, but it's not clear with old seats/new balls.3. Is the scoring shown below in the bore for the valves/sleeves a lost cause, or can this knocked well enough to work with careful use of something like Scotch-Brite? One of the scores is just deep enough that I can catch it with my fingernail if I really try.

I know Mack always said on here to not buy the complete kit from AGCO as you really only need a handful of parts for most of these pumps.

Edited by wjohn - 18 Apr 2024 at 6:47pm

	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
wjohn Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 19 Jan 2010 Location: KS Points: 1801	Post Options Post Reply Quote wjohn Report Post Thanks(1) Quote Reply Topic: WD/WD-45 Hydraulic Pump Questions Posted: 17 Apr 2024 at 10:40pm
	1. For all of the balls/seats, what is the best way to check them? Visual inspection, and then is there a good way to pressure test them individually? 2. Do you need to seat new balls to old seats (if I assume at least some of my old seats are okay)? EDIT: To clarify, using a hammer and drift... I know this needs to be done with new seats, but it's not clear with old seats/new balls. 3. Is the scoring shown below in the bore for the valves/sleeves a lost cause, or can this knocked well enough to work with careful use of something like Scotch-Brite? One of the scores is just deep enough that I can catch it with my fingernail if I really try. I know Mack always said on here to not buy the complete kit from AGCO as you really only need a handful of parts for most of these pumps. Edited by wjohn - 18 Apr 2024 at 6:47pm
	1939 B, 1940 B, 1941 WC, 1951 WD, 1952 CA, 1956 WD-45

Sponsored Links

Allis dave Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 10 May 2012 Location: Northern IN Points: 2853	Post Options Post Reply Quote Allis dave Report Post Thanks(0) Quote Reply Posted: 19 Apr 2024 at 8:10am
	Those do look scored, but I don't know how critical that is. As far as the seats. When I rebuilt my pump I had a lot of issues. I kept the old seats. Bought 2 sets of new balls. I put in one set of new balls and gave them each a good wack with the hammer and brass punch to seat them. Then I put in the 2nd set of balls incase I deformed the 1st set.