715 B INJECTOR PUMP
Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Construction and other equipment
Forum Description: everything else with orange (or yellow) paint
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=13514
Printed Date: 28 Jul 2025 at 1:25am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: 715 B INJECTOR PUMP
Posted By: LIAM
Subject: 715 B INJECTOR PUMP
Date Posted: 07 Jun 2010 at 10:28am
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jUST BOUGHT A 715 BACKHOE AND DOESN'T SEEM TO BE GETTING ANY FUEL. i CAN START W/ STARTER FLUID BUT SHE WON'T RUN WHEN i STOP SPRAYING? ANY ONE HAVE AN IDEA ABOUT THE PUMP OR EVEN A PIC OF THE SERVICE MANUAL REPAIR PAGE? ALSO how can I tell what year it is can't seem to find any serial #'s except the engine #.. thanks alot I'M kinda a newbie to this so I might ask a bunch of questions. |
Replies:
Posted By: Dave A
Date Posted: 07 Jun 2010 at 8:14pm
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will see if I have pics. look at the stop linkage make sure the linkage is pushing the injector pump on. Had a tractor at work that the pump stop linkage, didn't push the pump stop all the way open, made for hard starting. then check and see if fuel is getting down to the pump. When was the last time, it was run. fuel oil gets a bug that grows in it and causes all kinds of problems. If it ran a few years ago the it just does not start today start with the fuel system. I think that unit has a fuel pump on it. That has a primer lever on it. that might need to be used to get fuel moving. Taking apart a injector pump without a very clean aera is asking for trouble. Thinke the 816 has the same enging put a pic in the post below ------------- Play the game for more than you can afford to lose... only then will you learn the game. Winston Churchill |
Posted By: Dave A
Date Posted: 07 Jun 2010 at 8:30pm
 ------------- Play the game for more than you can afford to lose... only then will you learn the game. Winston Churchill |
Posted By: Dave A
Date Posted: 07 Jun 2010 at 8:33pm
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once you have fuel at the air bleeds. then a guy can start looking further. ------------- Play the game for more than you can afford to lose... only then will you learn the game. Winston Churchill |
Posted By: Calvin Schmidt
Date Posted: 07 Jun 2010 at 8:47pm
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I've had a 715 and currently have a 715B. Perkins engines can be real nasty to get running after they run out of fuel. You will have to crack an injector line at the injector to get the air out before it will start. Thats after you have done all the bleading at the filters, pump, etc ------------- Nothing is impossible if it is properly financed |
Posted By: injpumpEd
Date Posted: 07 Jun 2010 at 9:46pm
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If it has sat for any length of time, the fuel has likely went sour, and the pumping plungers are stuck. Happens alot with Roosa's, and CAV's. good luck!
------------- 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: Coke-in-MN
Date Posted: 07 Jun 2010 at 9:54pm
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Primary pump on engine is more than likley problem.
Srl# should be on plate on left side of tractor near operators platform , on frame just ahead of oil tank box. Look at picture of my machine and it is black plate
I have been able to get system clear of air by using a puff of starter fluid as it is trying to run. Just a puff to keep it going until it takes off on it's own.
Be sure the pump shut off lever is in right position On mine it is bass ackwards out to run , in to kill on dash control knob. ------------- Faith isn't a jump in the dark. It is a walk in the light. Faith is not guessing; it is knowing something. "Challenges are what make life interesting; overcoming them is what makes life meaningful." |
Posted By: Kipn
Date Posted: 08 Jun 2010 at 10:01am
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At the Chevy garage we used to soak a good size rag in gas and hold it on the air intake after filters were replaced. Started every time. ------------- 1961 H3 |
Posted By: LIAM
Date Posted: 09 Jun 2010 at 7:10am
| To all the guys who answered me thanks alot your help was great! I drained the tank and flushed, pulled primary pump and every fuel line off and blew out with the compressor ,changed the filters,then re assembled. used the primary pump to prime both filters and the injector pump took about twenty minutes.used 2-3 puffs of either and she fired rite up. took a couple to smooth out but runs like a top now. Again thanks for all your help. took about two hours start to finish . LIAM |