AC7040 fuel line
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=137838
Printed Date: 21 Jun 2025 at 8:10pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: AC7040 fuel line
Posted By: jazzsuds
Subject: AC7040 fuel line
Date Posted: 27 Apr 2017 at 1:38pm
| I have an AC 7040 and I have fuel running from a 1/4" black tube under my deck on the fuel pump side when tractor is running. What is that tube, where does it go to and how do I fix it? |
Replies:
Posted By: DrAllis
Date Posted: 27 Apr 2017 at 1:56pm
| Cut it in two where the bad spot is and splice it together with a piece of rubber hose and two hose clamps. |
Posted By: jazzsuds
Date Posted: 27 Apr 2017 at 2:09pm
| Thanks for the reply but it's leaking diesel fuel from the tube end. It looks like its a fuel release tube of some kind? |
Posted By: DrAllis
Date Posted: 27 Apr 2017 at 3:24pm
| I'm assuming it's fuel return to tank from the top of the injectors and the top of the injection pump. Cut an inch off of the bad end and reinstall. |
Posted By: jazzsuds
Date Posted: 27 Apr 2017 at 3:42pm
| OK thanks |
Posted By: jazzsuds
Date Posted: 19 May 2017 at 10:17am
| Hmmm I don't see where the fuel return line to the tank from the injectors attaches? Any ideas? |
Posted By: DrAllis
Date Posted: 19 May 2017 at 12:09pm
| Unless you've got some cobbled up plumbing, the fuel return line is at the #6 (rear) injector and goes under the cab to the top of the fuel tank. |
Posted By: jazzsuds
Date Posted: 19 May 2017 at 1:03pm
| OK thanks. I can't see the connection at the tank with the floor plate tight over top of the tank. Is it on the top side of the tank? |
Posted By: jazzsuds
Date Posted: 19 May 2017 at 1:04pm
| I guess I will have to remove the floor plate to get at the connection on the tank? |
Posted By: SteveM C/IL
Date Posted: 19 May 2017 at 1:11pm
whatever it takes
|
jazzsuds wrote:Posted By: MACK
Date Posted: 19 May 2017 at 9:28pm
| Loosen the two straps holding tank. Set a jack under tank and let it down a few inches. MACK |