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


D-17 Series 4 Hydraulic Pump Leak
 Post Reply Post Reply
Author
Message
  Topic Search Topic Search  Topic Options Topic Options
knotle View Drop Down
Bronze Level
Bronze Level


Joined: 16 May 2026
Location: Georgia
Points: 6 		Post Options Post Options   Thanks (0) Thanks(0)   Quote knotle Quote  Post ReplyReply Direct Link To This Post Topic: D-17 Series 4 Hydraulic Pump Leak
    Posted: 03 Jun 2026 at 12:15pm
Have a leak at front hose. Leak is where hex head screws into pump housing. Is there an o-ring behind there that could be replaced? Thanks for any info.
Back to Top
Sponsored Links


Back to Top
Alvin M View Drop Down
Orange Level
Orange Level


Joined: 24 Jun 2018
Location: PA
Points: 857 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Alvin M Quote  Post ReplyReply Direct Link To This Post Posted: 03 Jun 2026 at 2:17pm
Yes O Ring
Back to Top
knotle View Drop Down
Bronze Level
Bronze Level


Joined: 16 May 2026
Location: Georgia
Points: 6 		Post Options Post Options   Thanks (0) Thanks(0)   Quote knotle Quote  Post ReplyReply Direct Link To This Post Posted: 03 Jun 2026 at 2:45pm
Thanks. Thought that might be the case. Would you happen to know the o-ring size?
Back to Top
DrAllis View Drop Down
Orange Level Access
Orange Level Access


Joined: 12 Sep 2009
Points: 23574 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DrAllis Quote  Post ReplyReply Direct Link To This Post Posted: 03 Jun 2026 at 3:07pm
it is a standard O-Ring Boss (ORB) to roll on that fitting. It also must be of a hardness to withstand 2400 PSI of pressure. A cheap hardware store Oring will generally be too soft and blow out quickly. Take the fitting to ANY farm implement dealership and they can fix you up. It is not metric.
Back to Top
knotle View Drop Down
Bronze Level
Bronze Level


Joined: 16 May 2026
Location: Georgia
Points: 6 		Post Options Post Options   Thanks (0) Thanks(0)   Quote knotle Quote  Post ReplyReply Direct Link To This Post Posted: 03 Jun 2026 at 5:54pm
Thanks for your help.
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 0.063 seconds.


Help Support the
Unofficial Allis Forum