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AC 7060 fuel pump question

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=54148
Printed Date: 27 Sep 2024 at 4:31pm
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Topic: AC 7060 fuel pump question
Posted By: AC 426 power
Subject: AC 7060 fuel pump question
Date Posted: 24 Jul 2012 at 7:58pm
Went to start my 7060 and it would turn over but nothing but then realized that i had not pulled the injector pump shut off out but it still would not start then i primed the pump with the plunger and it took right off but sorta had a miss for a few seconds the tractor had set for about 2 weeks without starting as well. Is my pump getting weak or? Any thoughts ? If you have a question just ask thanks



Replies:
Posted By: Alan (C-IL)
Date Posted: 24 Jul 2012 at 8:24pm
Sounds more like air in the fuel resulting from a leak or bad check valve.  The stumble was probably due to some trapped air in the lines.  Do you see/smell any diesel fuel leaking?


Posted By: AC 426 power
Date Posted: 24 Jul 2012 at 8:27pm
Originally posted by Alan (C-IL) Alan (C-IL) wrote:

Sounds more like air in the fuel resulting from a leak or bad check valve.  The stumble was probably due to some trapped air in the lines.  Do you see/smell any diesel fuel leaking?        Yes its got some leaks on the fuel pump would that cause this?



Posted By: Alan (C-IL)
Date Posted: 24 Jul 2012 at 8:34pm
yea, diesel fuel systems don't like air and when you lose your prime, its a pain to reprime them... Sounds like you got lucky and it primed up easy.  If you have a diesel leak, it is very likely that air is getting back in.


Posted By: AC 426 power
Date Posted: 24 Jul 2012 at 8:39pm
Originally posted by Alan (C-IL) Alan (C-IL) wrote:

yea, diesel fuel systems don't like air and when you lose your prime, its a pain to reprime them... Sounds like you got lucky and it primed up easy.  If you have a diesel leak, it is very likely that air is getting back in.
Alright thanks for the information


Posted By: MACK
Date Posted: 24 Jul 2012 at 9:48pm
Take the primer pump apart. There is 2 check valves that could have foreign materal in them not letting them seat.  MACK



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