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


8000 tach
 Post Reply Post Reply
Author
Message
  Topic Search Topic Search  Topic Options Topic Options
cowkicker View Drop Down
Orange Level Access
Orange Level Access
Avatar

Joined: 21 Mar 2010
Location: Ky
Points: 531 		Post Options Post Options   Thanks (0) Thanks(0)   Quote cowkicker Quote  Post ReplyReply Direct Link To This Post Topic: 8000 tach
    Posted: 01 Jan 2022 at 5:05pm
I was wondering if there is an easy to check an 8000 series tach and magnetic pickup
. Thanks
Back to Top
Sponsored Links


Back to Top
Northern Hoser View Drop Down
Bronze Level
Bronze Level


Joined: 19 Feb 2020
Location: Canada
Points: 123 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Northern Hoser Quote  Post ReplyReply Direct Link To This Post Posted: 02 Jan 2022 at 2:00pm
The pickup is down by the starter, just below I think...it's been a while. Takes a large wrench but is only just snug...


Not too hard to take out and clean.

I cleaned mine but the tach is still jumpy.

I believe most tach issues are the tach, pretty common on these

Matt
Back to Top
DrAllis View Drop Down
Orange Level Access
Orange Level Access


Joined: 12 Sep 2009
Points: 22115 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DrAllis Quote  Post ReplyReply Direct Link To This Post Posted: 02 Jan 2022 at 2:26pm
If the speed sensor is probed with a multimeter and shows an open circuit, I would assume it is defective. A good speed sensor should read between 100 and 5000 ohms resistance. Installing a speed sensor, screw it in until it just touches the ring gear and back out one full turn. Obviously the two wires from the speed sensor to the tachometer must have continuity. If speed sensor and wiring test good, then the tachometer itself should be at fault.
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