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


3 Pt Adjustment Question
 Post Reply Post Reply
Author
Message
  Topic Search Topic Search  Topic Options Topic Options
dfwallis View Drop Down
Orange Level
Orange Level


Joined: 09 Mar 2023
Location: DFW
Points: 881 		Post Options Post Options   Thanks (0) Thanks(0)   Quote dfwallis Quote  Post ReplyReply Direct Link To This Post Topic: 3 Pt Adjustment Question
    Posted: 04 Jul 2025 at 8:35pm
I modded my CA custom 3pt hitch so that the lift arms will now go all the way to the ground.  However, I'm concerned that if I let the front of a mower drop too low (say crossing a ditch), that it will bind the PTO shaft.  Is there a general rule about how much you SHOULD allow the PTO shaft to bend?  Avoid crossing ditches or just limit the downward travel?  Best practices?

Edited by dfwallis - 04 Jul 2025 at 9:01pm
1952 CA13092
Back to Top
Sponsored Links


Back to Top
DiyDave View Drop Down
Orange Level Access
Orange Level Access
Avatar

Joined: 11 Sep 2009
Location: Gambrills, MD
Points: 54399 		Post Options Post Options   Thanks (1) Thanks(1)   Quote DiyDave Quote  Post ReplyReply Direct Link To This Post Posted: 04 Jul 2025 at 8:51pm
Max deflection for a U joint is 35 degrees, for safety, 20 degrees.  That's what the book says...  In practice, making sure you have the length right, and the joints properly phased are the important things...
Source: Babylon Bee. Sponsored by BRAWNDO, its got what you need!
Back to Top
WF owner View Drop Down
Orange Level
Orange Level


Joined: 12 May 2013
Location: Bombay NY
Points: 5052 		Post Options Post Options   Thanks (1) Thanks(1)   Quote WF owner Quote  Post ReplyReply Direct Link To This Post Posted: 05 Jul 2025 at 6:11am
If you drop it slowly when it's running, it will tell you when it is approaching too sharp (chattering). You should then be able to adjust your depth so you can't drop it too low.
Back to Top
DrAllis View Drop Down
Orange Level Access
Orange Level Access


Joined: 12 Sep 2009
Points: 22140 		Post Options Post Options   Thanks (1) Thanks(1)   Quote DrAllis Quote  Post ReplyReply Direct Link To This Post Posted: 05 Jul 2025 at 8:04am
Adjustable chains to control the max drop on the draft arms would be a good accessory to have to prevent a disaster like that from happening.
Back to Top
dfwallis View Drop Down
Orange Level
Orange Level


Joined: 09 Mar 2023
Location: DFW
Points: 881 		Post Options Post Options   Thanks (0) Thanks(0)   Quote dfwallis Quote  Post ReplyReply Direct Link To This Post Posted: 05 Jul 2025 at 9:33am
Originally posted by DrAllis DrAllis wrote:

Adjustable chains to control the max drop on the draft arms would be a good accessory to have to prevent a disaster like that from happening.

There are screw/turnbuckle adjustments.  Just trying to determine where to set them.


Edited by dfwallis - 05 Jul 2025 at 2:36pm
1952 CA13092
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 0.078 seconds.


Help Support the
Unofficial Allis Forum