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Pumps, Pumps, and Wheel motors

Discussion in 'Lawn Mowing' started by Frue, Jul 25, 2008.

  1. Frue

    Frue LawnSite Bronze Member
    Messages: 1,472

    In the last few years I have owned 3 different models of z's, all with baggers. Toro z500, exmark hp triton, ferris is2000,and toro diesel. I have blown pumps a wheel motors in all these mowers within 100 hours of use. What is causing this phenominom? I read on other sires where other people are having the same problems.
    My first Z was a toro back in 2000 never blew anything in fact its still running! Are the Z's just made cheaper but costing us more?
  2. Oldtimer

    Oldtimer LawnSite Bronze Member
    Messages: 1,459

    You can't blame the Z mower manufacturers for the hydro problems.

  3. It would be nice if manufacturers would have the option of larger pumps & motors for those running baggers all of the time. Especially for those with employees operating them.
  4. Two Seasons

    Two Seasons LawnSite Senior Member
    Messages: 791

    I'll hazard a guess and say you have air in the pumps/wheel motors which causes cavitation. Without the oil being present in the pumps/wheel motors 100% of the time causes cavitation (air). Air will overheat your hydraulics!
  5. tb8100

    tb8100 LawnSite Bronze Member
    from TX
    Messages: 1,625

    This is true! :waving:
  6. themowerman

    themowerman LawnSite Senior Member
    from NJ
    Messages: 298

    Air in the system will cause failures. So will not running the right oil, not running machine at 3/4 to full throttle at all times, not letting system warm up before use, and jack-rabbit starts.
  7. freedm2

    freedm2 LawnSite Member
    from PA
    Messages: 217

    How can you tell if you have air in the system?
  8. meets1

    meets1 LawnSite Gold Member
    Messages: 3,855

    I know toro pump are made elsewhere and I have fought this problem at two machine. Funny thing is my old toro z's with 2500 hours are still running strong. Air can be a problem and I only know that you can try to bleed the system but that is messy and I would take to dealer and see what he says or does - then its his problem and mess to kix if not done right.

    I know in the toro's they recemmend you add 'shock absorders" to the pumps if you run a bagger. They claim weight and bouncing will put extra stress on pumps/wheel motors. I don't know, never installed them and until they come factory, I am going to take my chances.
  9. JosephLawnCare

    JosephLawnCare LawnSite Senior Member
    Messages: 809

    I've been doing this for 15 years. WTF is a jack rabbit start??? explain please
  10. S man

    S man LawnSite Gold Member
    Messages: 3,562

    I think better outdoor uses some like that.

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