giant vac impeller issues

Discussion in 'Mechanic and Repair' started by EARTH5, Nov 24, 2012.

  1. EARTH5

    EARTH5 LawnSite Member
    Posts: 124

    I have a 16 hp giant vac leaf loader.. the machine vibrates really bad and i have figured out it is the impeller.. very worn and chewed up.. ok heres the problem i tried everything to get it off, including heat and a puller... it only has a ring on the impeller to pull from and not any holes for bolts to push it off shaft.. any idea where to get the right tool to remove it??also where to get an impeller as giant vac is outta businesss. thanks for help
  2. Kelly's Landscaping

    Kelly's Landscaping LawnSite Platinum Member
    Posts: 4,353

    They are not out of business scag now owns and operates them. You need to find a giant vac dealer. As for the impeller removal iv always let the dealer do that task for me it's a nightmare to get them off. Iv probably replaced 3 of them on my 20 hp giant vacs thus far and my swing away is in need of replacement as well. I am gona wait till after spring clean ups and all that sand before I take the hit.
  3. White Gardens

    White Gardens LawnSite Fanatic
    Posts: 6,776

    Puller and an impact gun is what I would go for.

    Put tension on the puller then lightly rap the impeller to hopefully create enough vibration to make it pop loose.

    Any penetrating oil and heat should work also. I'd just make sure not to over-heat the end of the motor shaft.

    You should be able to get a puller stud through the mounting hole. I'd use a bolt with the head cut off for the puller shaft to sit on. Or a long bolt that gives you about 1/4 of play to allow the impeller to release. Just make sure you have plenty of threads going into the motor shaft.

  4. G.M.Landscaping

    G.M.Landscaping LawnSite Senior Member
    Posts: 937

    I would try a cut-off wheel on opposite sides of the impeller.
  5. White Gardens

    White Gardens LawnSite Fanatic
    Posts: 6,776

    That's another option, I didn't want to mention it in case he cut too far and got into the motor shaft.

  6. EARTH5

    EARTH5 LawnSite Member
    Posts: 124

    great guys thanks for help ya i am trying to avoid cutting as you can hit the crankshaft and then ur in trouble... went to harbor freight and got a few pullers to try in a.m..... i love sundays when u own a business... work never ends!!

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