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653 Crawler Injection Pump Pressure
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jrtruckn View Drop Down
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Joined: 18 Aug 2019
Location: West Virginia
Points: 4 		Post Options Post Options   Thanks (0) Thanks(0)   Quote jrtruckn Quote  Post ReplyReply Direct Link To This Post Topic: 653 Crawler Injection Pump Pressure
    Posted: 26 Aug 2019 at 5:56pm
I’m new to the forum and have searched but unable to locate an answer to my question.

I recently purchase a 653 crawler that hasn’t been run for 6 years. Motor turns over easily but I can’t seem to get it to fire. I’ve replaced the fuel filter, checked and cleaned the sediment bowl and checked the screen on the injector pump. There appears to be plenty of fuel getting to the injector pump but when I disconnect the line at the injectors the fuel seems to barely come out.

Injection pump: Roosa Master model DBGFC 433-1jn

My question is how much pressure should there be going into the injector from the pump?
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Tracy Martin TN View Drop Down
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Joined: 11 Sep 2009
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Points: 10698 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Tracy Martin TN Quote  Post ReplyReply Direct Link To This Post Posted: 26 Aug 2019 at 5:59pm
Probably stuck plungers and or cutoff. Injector ED can fix you up. Tracy
No greater gift than healthy grandkids!
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jrtruckn View Drop Down
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Points: 4 		Post Options Post Options   Thanks (0) Thanks(0)   Quote jrtruckn Quote  Post ReplyReply Direct Link To This Post Posted: 26 Aug 2019 at 7:35pm
I’m sorry who or what is “Injector ED”?
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Jim.ME View Drop Down
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Points: 960 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Jim.ME Quote  Post ReplyReply Direct Link To This Post Posted: 26 Aug 2019 at 8:44pm
InjpumpED

You can find his info in the memberlist and send him a PM. He operates a diesel injection repair service.
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NomoreJohnDeere View Drop Down
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Points: 308 		Post Options Post Options   Thanks (0) Thanks(0)   Quote NomoreJohnDeere Quote  Post ReplyReply Direct Link To This Post Posted: 26 Aug 2019 at 10:47pm
make sure the fuel shut off is not off
is it manual or electric solenoid?
HD3
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jrtruckn View Drop Down
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Points: 4 		Post Options Post Options   Thanks (0) Thanks(0)   Quote jrtruckn Quote  Post ReplyReply Direct Link To This Post Posted: 27 Aug 2019 at 4:03pm
Originally posted by NomoreJohnDeere NomoreJohnDeere wrote:

make sure the fuel shut off is not off
is it manual or electric solenoid?




I checked the shut off twice after filter replacement because that would be a boneheaded move that I would do!

If you’re talking the pump it is manual.
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SteveM C/IL View Drop Down
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Joined: 12 Sep 2009
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Points: 8510 		Post Options Post Options   Thanks (0) Thanks(0)   Quote SteveM C/IL Quote  Post ReplyReply Direct Link To This Post Posted: 30 Aug 2019 at 9:31pm
They say the metering valve can get stuck. I think you can fiddle with it with the top cover off the pump. I know nothing about it just heard it talked about.
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injpumpEd View Drop Down
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Points: 5074 		Post Options Post Options   Thanks (0) Thanks(0)   Quote injpumpEd Quote  Post ReplyReply Direct Link To This Post Posted: 07 Sep 2019 at 11:21am
Quite often injection pumps get gummed up and stuck from sitting in old fuel. I just tore down a 4010 pump yesterday that had sat a long time but it actually ran, well it ended up seizing the head and breaking the driveshaft. The fuel inside looked like syrup. Now a much more costly repair. Lesson here is, just because it will run, doesn't mean it should be forced to run in the junk fuel. When in that shape, it should be pulled off and sent to a competent fuel injection specialist. 
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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