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


Zenith carb issues

 Post Reply Post Reply
Author
Message
ckupq View Drop Down
Bronze Level
Bronze Level


Joined: 06 Aug 2017
Location: Lansing MI
Points: 2
Post Options Post Options   Thanks (0) Thanks(0)   Quote ckupq Quote  Post ReplyReply Direct Link To This Post Topic: Zenith carb issues
    Posted: 06 Aug 2017 at 6:30pm
'41 B with a Zenith carb. 
I'm having fueling issues that I think I've isolated to my carb. I've searched enough around here before posting to know its not a common problem. I rebuilt the Zenith carburator with a new float (ABC190) and Rebuild kit (ABC232) from Steiner tractor. I set the float at 1 5/32" with the gasket on the carb, and I can pull the bottom drain plug out of it and only get a dribble out of the carb with the tank valve open. 

I've washed out the tank, fuel bowl and lines going to the carb and can get good flow up to the carb. I've even pulled the elbow to make sure it wasn't a screened elbow that was clogged. The elbow doesn't have a screen so no need to worry I guess? 

I don't know where to go from here as I think I got everything setup per spec. short of setting the float height at 1.05", which is what it would be if I removed the gasket between the needle seat and the zenith body. 

Is there anything I missed?
Back to Top
Sponsored Links


Back to Top
Steve in NJ View Drop Down
Orange Level Access
Orange Level Access
Avatar

Joined: 12 Sep 2009
Location: Andover, NJ
Points: 11502
Post Options Post Options   Thanks (0) Thanks(0)   Quote Steve in NJ Quote  Post ReplyReply Direct Link To This Post Posted: 06 Aug 2017 at 7:17pm
When rebuilding Zenith or Marvel Carbs, always run a brush on a drill into the inlet cavity and get all the rust and crud that builds up in there over the years. You'll be a bit suprised how much rust collects in the threads, and rust n' debris get lodged at the rear of the inlet. That could possibly be where you fuel is getting restricted. Everytime I rebuild a customer's Carburetor, that is part of the cleaning process.  HTH
Steve@B&B
39'RC, 43'WC, 48'B, 49'G, 50'WF, 65 Big 10, 67'B-110, 75'716H, 2-620's, & a Motorhead wife
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 0.047 seconds.


Help Support the
Unofficial Allis Forum