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
Forum Home Forum Home > Allis Chalmers > Farm Equipment
  New Posts New Posts
  FAQ FAQ  Forum Search   Events   Register Register  Login Login


WD hydraulic relief valve
 Post Reply Post Reply
Author
Message
  Topic Search Topic Search  Topic Options Topic Options
pleman View Drop Down
Bronze Level
Bronze Level
Avatar

Joined: 22 Sep 2016
Location: Hampshire, IL
Points: 3 		Post Options Post Options   Thanks (0) Thanks(0)   Quote pleman Quote  Post ReplyReply Direct Link To This Post Topic: WD hydraulic relief valve
    Posted: 22 Sep 2016 at 3:58pm
Bought a 1953 AC WD. The previous owner had low hydraulic fluid so the lift arms worked fine. When I added oil to the correct level and raised the arms, the relief valve did not work and oil spurted from every gasket. How do I check/repair the relief valve?
Back to Top
Sponsored Links


Back to Top
MACK View Drop Down
Orange Level
Orange Level


Joined: 17 Nov 2009
Points: 7664 		Post Options Post Options   Thanks (0) Thanks(0)   Quote MACK Quote  Post ReplyReply Direct Link To This Post Posted: 22 Sep 2016 at 9:42pm
There is no relief valve in WD hydraulic pump, it is a unloading valve. It is shim adjusted. Pump has to be removed and taken apart to be adjusted.
 Disassembly pump, clean and polish all spool valves, replace o rings and reassemble.    MACK
Back to Top
pleman View Drop Down
Bronze Level
Bronze Level
Avatar

Joined: 22 Sep 2016
Location: Hampshire, IL
Points: 3 		Post Options Post Options   Thanks (0) Thanks(0)   Quote pleman Quote  Post ReplyReply Direct Link To This Post Posted: 23 Sep 2016 at 6:45am
Thanks.
Back to Top
Allis dave View Drop Down
Orange Level
Orange Level


Joined: 10 May 2012
Location: Northern IN
Points: 2981 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Allis dave Quote  Post ReplyReply Direct Link To This Post Posted: 23 Sep 2016 at 6:48am
I agree with Mack. Something must've stuck. I'm not sure what the low oil level would matter unless it was almost out of oil, which would be bad for the pump.
Back to Top
DrAllis View Drop Down
Orange Level Access
Orange Level Access


Joined: 12 Sep 2009
Points: 21409 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DrAllis Quote  Post ReplyReply Direct Link To This Post Posted: 23 Sep 2016 at 10:00am
Before tearing things all apart, check to see exactly what pressure you have.....3400 psi is the max spec.
Back to Top
Allis dave View Drop Down
Orange Level
Orange Level


Joined: 10 May 2012
Location: Northern IN
Points: 2981 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Allis dave Quote  Post ReplyReply Direct Link To This Post Posted: 23 Sep 2016 at 10:18am
Doc has a good point, unless it's leaking so bad now, that you can't use it. By a pressure gauge put a coupler on it to hookup to the hydraulic remote to check pressure.
Back to Top
 Post Reply Post Reply
  Share Topic   

Forum Jump Forum Permissions View Drop Down

Forum Software by Web Wiz Forums® version 11.10
Copyright ©2001-2017 Web Wiz Ltd.

This page was generated in 0.398 seconds.


Help Support the
Unofficial Allis Forum