8070 fuel leak
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=38802
Printed Date: 23 Sep 2025 at 12:35am
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Topic: 8070 fuel leak
Posted By: Dwayne TX
Subject: 8070 fuel leak
Date Posted: 12 Oct 2011 at 10:35am
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Noticed a small leak on #1 inj line. The parts breakdown shows several pieces - dust shield, hold-down washer, nozzle & holder assy, and sleeve/nut assy. Where is the most likely cause of the leak? It's not much more than a seep right now. |
Replies:
Posted By: injpumpEd
Date Posted: 12 Oct 2011 at 11:43am
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most likely line itself cracked. ------------- 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! |
Posted By: TexasAllis
Date Posted: 13 Oct 2011 at 11:55am
Could one braze injector lines?
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injpumpEd wrote:Posted By: injpumpEd
Date Posted: 13 Oct 2011 at 12:01pm
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wont last very long. ------------- 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! |
Posted By: Dwayne TX
Date Posted: 13 Oct 2011 at 4:34pm
It looks like the leak is below the sleeve and nut on the nozzle/holder |
Posted By: injpumpEd
Date Posted: 13 Oct 2011 at 9:13pm
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have the injectors been "rebuilt" recently? I have seen several times where someone attempts to rebuild the Bosch/American Bosch injectors, and they don't lap the mated surfaces correctly or at all. The holder will leak fuel, and it will look like fuel is coming out of the injector hole in the head. If line is leaking under the ferrule you can cut line off at the crack, and use a new ferrule, but the bend at the nozzle end is pretty tight. Good luck, Ed.
------------- 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! |