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


440 Hydraulic System
 Post Reply Post Reply
Author
Message
  Topic Search Topic Search  Topic Options Topic Options
Midwest Farmer 7153 View Drop Down
Bronze Level
Bronze Level


Joined: 16 Apr 2024
Location: Ohio
Points: 3 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Midwest Farmer 7153 Quote  Post ReplyReply Direct Link To This Post Topic: 440 Hydraulic System
    Posted: 16 Apr 2024 at 7:13pm
New to the forum.  Just bought a 1975 440.  I plan to restore the unit and use it on the farm.  The hydraulic fluid has water in it, most likely due to the tank cap being damaged and allowing water in.  Can anybody walk me though flushing the hydraulic system? Also, can I use universal sae 10-30 hydraulic fluid in the system?  The owner's manual calls for straight 10.  Thank you in advance.
Back to Top
Sponsored Links


Back to Top
ac fleet View Drop Down
Orange Level
Orange Level


Joined: 12 Jan 2014
Location: Arrowsmith, ILL
Points: 2206 		Post Options Post Options   Thanks (0) Thanks(0)   Quote ac fleet Quote  Post ReplyReply Direct Link To This Post Posted: 16 Apr 2024 at 10:17pm
Dont know what my two 440's have in them. I never had to add or change it. Mine are # 1576 and # 1577 ---- what is your #?  I could have had 1578 but didnt have the money to get it.
http://machinebuildersnetwork.com/
Back to Top
Midwest Farmer 7153 View Drop Down
Bronze Level
Bronze Level


Joined: 16 Apr 2024
Location: Ohio
Points: 3 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Midwest Farmer 7153 Quote  Post ReplyReply Direct Link To This Post Posted: 17 Apr 2024 at 5:46am
#1694
Back to Top
Ray54 View Drop Down
Orange Level Access
Orange Level Access


Joined: 22 Nov 2009
Location: Paso Robles, Ca
Points: 4354 		Post Options Post Options   Thanks (1) Thanks(1)   Quote Ray54 Quote  Post ReplyReply Direct Link To This Post Posted: 17 Apr 2024 at 1:04pm
Welcome 
Since nobody seems to know I will stick my neck out to be chopped off when I am wrong. As I have never been on a 440. With the book saying 10# oil, I would guess the hydraulic system is not part of any other thing like the transmission, as most tractors are. So at least as a flushing fluid use cheap yellow bucket oil.

I have farmed with old crawler tractors for 50 years. All add on hydraulic systems so I have been using the cheapest possible yellow bucket oil. I did have a failure with it 2 years ago. It had a wax like substance completely choke off the screen on my suction side of pump. It had been sitting for several months. Upon use after a hour I had less and less hydraulic pressure to lift remote equipment, so I stopped. Once clean everything worked, with more yellow bucket that was on hand.  But have not bought any more since then. 
Back to Top
SteveM C/IL View Drop Down
Orange Level Access
Orange Level Access


Joined: 12 Sep 2009
Location: Shelbyville IL
Points: 7985 		Post Options Post Options   Thanks (1) Thanks(1)   Quote SteveM C/IL Quote  Post ReplyReply Direct Link To This Post Posted: 17 Apr 2024 at 2:16pm
They just use an Eaton truck trans so i'm sure the hyd system is an add on of some kind. Any good hyd oil should work. Just an opinion.....
Back to Top
ac fleet View Drop Down
Orange Level
Orange Level


Joined: 12 Jan 2014
Location: Arrowsmith, ILL
Points: 2206 		Post Options Post Options   Thanks (0) Thanks(0)   Quote ac fleet Quote  Post ReplyReply Direct Link To This Post Posted: 17 Apr 2024 at 8:28pm
Hyd system is by itself!! NOT part of the trans.!  
http://machinebuildersnetwork.com/
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