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NC 3000 slurry pump not turning

  • 30-12-2022 5:38pm
    Registered Users Posts: 3,745 ✭✭✭

    Anyone know what the problem is? Do they have a shear bolt, the pto shaft is turning but the pump isn’t.


  • Registered Users Posts: 1,400 ✭✭✭mr.stonewall

    One of 2 things.

    No1 is that roll pin could be gone at the following locations. At the impeller at the base, or at the universal joint off the gear box.

    No2 is more horrific, gear box is mince meat

  • Registered Users Posts: 1,342 ✭✭✭cjpm

    The majority have a shear bolt either on the pto drive or else under the gear box

    They are machines where an unstoppable force meets an immovable object fairly regularly!!

  • Registered Users Posts: 3,745 ✭✭✭Dakota Dan

    It seems to be at the top I was thinking the gear box myself but it a fairly new pump and the pto is turning freely probably the shear bolt, is it easy to get at it?

  • Registered Users Posts: 1,400 ✭✭✭mr.stonewall

    It's a matter of using a process of elimination starting at the PTO shaft and working through. Is the output shaft turning then the PTO stub is turned. The move onwards to the universal joint and finally the impeller. The are a simple machine and shouldn't take long to find the issue, no more than 10 mins.

    Don't forget to check both end of the PTO shaft as one end tends to have a shear bolt.

  • Registered Users Posts: 4,091 ✭✭✭stanflt

    the gearbox gave up on my 3000 just before Christmas- got 18 good years out of it

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  • Registered Users Posts: 4,940 ✭✭✭Grueller

    A 3000 seems small for the hp available to you Stan. You were due an upgrade anyway. A 3800 would be the minimum you should have I'd have thought?

  • Registered Users Posts: 405 ✭✭Silverdream

    The first shear bolt (the one that usually goes) is at point where you connect the pto shaft to the agitator. The shear bolt itself is a heavy type one which you'll have to order to get but you can use a shear bolt off a topper, it will get you out of a hold for a while (mine has a topper shear bolt with the last few years, someday I'll get around to putting in the heavier type one)

  • Registered Users Posts: 4,091 ✭✭✭stanflt

    Buying a cross sa2- 5000gals mixing as opposed to the 3000 or 3800 nc

  • Registered Users Posts: 4,940 ✭✭✭Grueller

  • Registered Users Posts: 4,091 ✭✭✭stanflt

    Neighbour has one and is an absolute Animal of a machine- it never gets blocked with twine cow cleanings etc around the bottom and you don’t have to take the power shaft off

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  • Registered Users Posts: 1,014 ✭✭✭Tonynewholland

    I've one as I feed all bales. They have a new type impeller that extends outside the base meant to be a good job. I don't have it but I'll put one on the next time I do the bushing at the bottom.

  • Registered Users Posts: 7,653 ✭✭✭funkey_monkey

    @stanflt - are they much more expensive than the NC? Got an NC3000SU here for the same reason that you can keep the PTO shaft on.

    Do none of the manufacturers offer the same hydraulic drive that you can get on the tankers instead of a shaft? I see NC has an electric motor option - not sure how it gets spun up - 110V supply? They also have a racy remote control version which I think should be more widespread from a safety POV.