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Any hydro pump repair guys?

Discussion in 'Mechanic and Repair' started by wcb607a, Feb 25, 2012.

  1. wcb607a

    wcb607a LawnSite Member
    Messages: 132

    Both exmark lazer z pumps are leaking from mid seal. I will purchase seal kits, but since I will have both pumps dissembled what parts do you recommend to buy to rebuild the pumps. Each pump cost $450 each new :dizzy:. Mower has 3200 hrs.
  2. piston slapper

    piston slapper LawnSite Platinum Member
    Messages: 4,329

    Buy the seal kits....you won't know which, if any other parts you may need till you get them apart...worn parts usually show themselves once the pump is taken apart.
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  3. cottoncoggin

    cottoncoggin LawnSite Member
    Messages: 130

    if any metal wear from experince id go with new and flush whell motor well just saying been their done that 3200 hrs they have alot of hrs
  4. T-Trim

    T-Trim LawnSite Member
    Messages: 204

    What model pump do you have on that mower? First hands down all the bearing.
  5. StihlMechanic

    StihlMechanic LawnSite Bronze Member
    Messages: 1,133

    If leaks are the only issue, buy the seal kit and milk some more time out of them. Be sure to add the correct oil (mobil one 15-50). The exmarks and toros hydro systems are self purging but I always bleed the lines when installing new or rebuilt pumps anyways. Then I always crank the engine (once the hydro belt is in place) with the ignition leads off the plugs for 10 seconds ( to turn the pumps but not start the engine), replace the leads, start the engine and idle for 5 minutes. Then I slowly creep forward then reverse a few times until it feels fully responsive.

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