XT fuel flow revisited
Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Farm Equipment
Forum Description: everything about Allis-Chalmers farm equipment
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=48533
Printed Date: 21 Aug 2025 at 1:07pm
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Topic: XT fuel flow revisited
Posted By: captaindana
Subject: XT fuel flow revisited
Date Posted: 05 Apr 2012 at 5:14pm
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today after a week away from her getting my new seeding in. I removed both sediment assemblies out of the tank bottom. I let a gallon run out of each nipple. I cleaned each assembly. In the top part above the fuel shut off needle both had foreign objects like cork which I cleaned then reinstalled. After hooking back up I let fuel run from right bowl to left 'T' just ahead of left bowl. Great flow. I then disconnected fuel line where it threads onto hand primer and let it hang there...and no fuel. The tractor is on level ground and tanks three quarters full. Fuel should just gravity feed out of the primer feed, correct? If it should then I know my restriction is between left bowl and primer. I guess my bottom line question is with the hand primer feed line disconnected, shouldn't fuel run freely until the tanks empty? Thanks, Dana, and hope y'all have a safe easter weekend!
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Replies:
Posted By: injpumpEd
Date Posted: 05 Apr 2012 at 6:28pm
there are 2 check valves in the primer assy. May have junk in them plugging their flow.
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210 "too hot to farm" puller, part of the "insane pumpkin posse". Owner of Guenther Heritage Diesel, specializing in fuel injection systems on heritage era tractors. stock rebuilds to all out pullers!
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Posted By: D-17_Dave
Date Posted: 05 Apr 2012 at 6:37pm
Sounds like the cork float has come apart. I'm not familiar enough with a 190 to know what components might be in place, like the check valves, but I'd remove the lines from the tee and blow compressed air backwards through the lines to blow out any accumulation of debris.
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Yea, I can fix that.....
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Posted By: captaindana
Date Posted: 05 Apr 2012 at 7:11pm
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Yeah I have blown that line out several times. Ed theres no flow out of the sole line feeding primer. I've had primer apart it's fine. The main line runs from left sediment bowl 'T' to feed the primer. It has a junction right near the front of the battery box. Now that I have the sediment bowls and interconnecting line flowing nicely, I'll check the flow at the bat box junction. I will track this restriction down tomorrow! Thanks, Dana
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Posted By: captaindana
Date Posted: 06 Apr 2012 at 6:18am
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I have trouble measuring feed line size id to primer, what in heck size is it? I am going to add a rubber fuel line feed. 3/8??
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