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Case 580M Over revving

Discussion in 'Tractor/Loader/Backhoes' started by Zardiw, Jun 11, 2019.

  1. Zardiw

    Zardiw Member

    Joined:
    Jun 11, 2019
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    Location:
    Palm Springs
    Hey Guys......

    When I start it, it immediately over revs....so I shut it down immediately.

    Could the throttle be stuck?

    It had been sitting for a couple of months.....I'm in the desert and recently it's over 100 degrees.

    Anyway, yesterday I tried to start it and it started up but then died.

    It would keep running if I gave it a lot of throttle, but if I let off it would die......and had a hard time starting also.

    I decided to let her rest for awhile, and I went out today and when she started she went immediately into over rev mode.....

    Any thoughts?

    PS. This is a 2006 580M Backhoe

    Thank you.........z
     
  2. thepumpguysc

    thepumpguysc Senior Member

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    Occupation:
    Master Inj.Pump rebuilder
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    Which inj. pump?? Bosch Ve or Cav DPA..??
    Its rare that a VE runs away unless its just loaded w/ water & rust..
    The DPA WILL run up on the gov. w/ a stuck metering valve & are VERY PRONE to rust/water.
     
  3. Zardiw

    Zardiw Member

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    Location:
    Palm Springs
    Thank you for the info!

    Posted a pic below........... Checked the throttle linkage and it seems to be working.

    SO.....take it apart?..........bang on it?

    Btw.....your join date is my bdy.......fwtfw......lol

    z
     
    Last edited: Jun 12, 2019
  4. Zardiw

    Zardiw Member

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    Location:
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  5. Zardiw

    Zardiw Member

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    Location:
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    I bought it from a guy in Pennsylvania.......it has a LOT of rust...replaced all the filters, fluids, etc......the exhaust manifold is really rusted......haven't got the chance to dig into replacing it......guess I'll be replacing/rebuilding an injector pump instead.....lots of fun looks like......lol.......unless there's an easier way to fix it........

    She was running fine earlier....for several months.....maybe cause I let her sit too long w/o starting her up?

    PS. She's in the desert now, so rust isn't a problem for her anymore......
     
  6. joe--h

    joe--h Well-Known Member

    Joined:
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    Location:
    Utah
    Free advice, send pump to thepumpguysc.
    He does a good job & he'll even take a bad check for payment.
    Joe H
     
    chas357 and Vetech63 like this.
  7. thepumpguysc

    thepumpguysc Senior Member

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    That's a Bosch VE pump.. so RUST is at the top of the list..
    OR that bulbous lookin thing on the side.. the cold start devise.. has exploded internally.. {very common}
    Its not advisable to take it apart.. once u start loosing parts, some can only be replaced as "assemblies"..
    & can be costly..
    U could remove the solenoid on the CSD & see if u see metal around the stem of the sol. or in the housing.
    & u could remove the return connector & see if its rusted or has rust on the threads.. & btw, it should rattle if u shake it.. theres a piston inside of it..
    SO, metal on the CSD sol or hsg.. & rust on the outlet bolt threads..
     
  8. Vetech63

    Vetech63 Senior Member

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    Ok....
    That was hilarious!!!
     
    mg2361, Tinkerer and Wytruckwrench like this.
  9. Zardiw

    Zardiw Member

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    OK......Thank you! ....I'll check those things.........What do you recommend? They got some on EBay for not that much money.....fwiw........

    z
     
  10. alrman

    alrman Senior Member

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    Diesel Fitter;Small Business Owner;Cleaner
    Location:
    QLD Australia
    There is a small seal that could be leaking fuel into the diaphragm on the top of that pump, sending fuel to the intake uncontrollably.
    It will require specialised repair skills...... hopefully by a fuel technician with a calm aura :rolleyes:
     
    Tinkerer likes this.
  11. thepumpguysc

    thepumpguysc Senior Member

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    Z.. what are u talking about, "not that much money"?? I'm seeing 2000.00.!!??
     
  12. joe--h

    joe--h Well-Known Member

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    Send it to the pump guy.................
    Joe H
     
  13. Tinkerer

    Tinkerer Senior Member

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    On A Riverbank in IL. USA
    Do yourself a favor and PM thepumpguy for rebuild appt. !
     
  14. Zardiw

    Zardiw Member

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    Location:
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    Alrman.....Inside that square thing on top with 4 bolts, right.....one of em is a security allen, but I think I have one of those.....

    There's also something on the bottom right that could be removed........and the big hose that goes into the left side.

    Thinking that anything I can check w/o pulling it (which seems to be a bear...Kodiak type....lol)...is preferable.

    I just did a quick check on EBay and saw prices of $500 or so.......but probably the wrong kind.

    Just want to thank you guys for the ideas..........and if it needs a rebuild, I can go with the pump guy.......pretty sure I have a few bad checks lying around........lol....

    Bottom Line is it needs to be done, and needs some money thrown at it.......working on that part.

    Fwiw, I'm halfway decent at mechanical stuff....rebuilt a 350 engine, a tranny, and replaced cylinder sleeves and the drive pinion/gear on an old 580B I used to have........Not looking forward to pulling this pump though....older I get the less I wanna do........lol

    z
     
    Last edited: Jun 14, 2019
    Vetech63 likes this.
  15. Vetech63

    Vetech63 Senior Member

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    Before you pull it make sure TPG gives you some guidelines. You will need to pin the gear before you pull that pump so you don't have a mess later.
     
  16. thepumpguysc

    thepumpguysc Senior Member

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    IF you think your getting fuel ON TOP OF the diaphragm..{highly unlikely}
    Just pull the boost line on the pump & start the engine & rev it or run it threw the yard a minute..
    IF its a blown diaphragm, the hole where the hose went will be wet.. & dripping..