Urgent Request--Turf Tracer HP vibration

Discussion in 'Mechanic and Repair' started by Tomt, May 24, 2005.

  1. Tomt

    Tomt LawnSite Member
    Messages: 218

    Was using my TTHP today and while cutting it developed a vibration when blade is engaged. When blades are off runs fine.

    I have checked; Blades, no nicks and balanced. Pulleys above deck seem fine, loosened belt and all seems ok. Looked at pulleys at rear of mower and they look ok and don't feel loose.
    I don't use this mower but about once per day, my primary is a 52" Lazer. The tthp only has about 50 hours on it.

    Thursday, I need to use the mower for two jobs so your help will be greatly appreciated. :help: :help: :help:
  2. Envy Lawn Service

    Envy Lawn Service LawnSite Fanatic
    Messages: 11,087

    Have you checked the spindles for play?
    Sometimes you get an early failure.

    If none of this is it, change blades, use a different style, and tighten them well.

    If the problem is still present, you will need someone to help you. Have someone hold the safety for you so you can have the mower sitting still while the blades are engaged.

    Be SAFE... but look for belt deflection... guitar string effect....
    This can happen several places along the belt routing.
  3. KrisD

    KrisD LawnSite Member
    Messages: 14

    Try checking the tension on the belt that actuates the blades. There is a place under the left rear of the mower that say where it should be adjusted to. When I've had new belts they have needed to be retightened after a little while. Hope that's it.
  4. fixer67

    fixer67 LawnSite Silver Member
    Messages: 2,098

    You may need to take the belt off to get a good idea of any spindle play. Also check the belt, the whole belt. You could have a "bit" taken out of the belt causing this.
  5. Tomt

    Tomt LawnSite Member
    Messages: 218

    Thanks for all your input.
    I had checked most if not all the things suggested and found nothing.
    Loaded it up and took it to the shop, tech. that works on mowers was out having hand surgery, would be maybe a week, that wouldn't't work. Took it back home.
    Started at front and worked back checking all pulleys, belts, bolts, & linkage, nothing. Started at back, working to front started checking "clutch", belt and belt was fine but in process found the problem: one inch by half inch piece of oak limb wedged in "v" of pulley. It was wedged good but got it out and all is smooth again. :dizzy: :waving: :cool:
  6. Envy Lawn Service

    Envy Lawn Service LawnSite Fanatic
    Messages: 11,087

    Figured it was belt deflection.
  7. johnnyusa

    johnnyusa LawnSite Senior Member
    Messages: 514

    Ck. rear left in back of mower( near left drive wheel ) pump there is a adjustment for blade engagement turnbuckle. there is a small hole to see if your blade engagement is out of alignment. when your machine is new the belts stretches and needs adjustment within 50 hrs.if you look in the manual it will explain this better.any problems e-mail me and I will tell you what page in manual to look on Good luck, John

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