Hydro Gear Pump Seal Replacement

Discussion in 'Mechanic and Repair' started by thomasb70, Feb 7, 2006.

  1. thomasb70

    thomasb70 LawnSite Member
    Messages: 11

    The lip seal on one of my Hydro Gear pumps is leaking and needs to be replaced. Do I need to drain the two gallon tank that is overhead or will leakage not be a big deal. It seems to be as simple as pulling the old seal out and pressing the new one in but I don't know if the control arm of the pump is under any kind of oil pressure from the sump or not. It is on an older Bunton Hydro. Thanks for any help.
  2. thomasb70

    thomasb70 LawnSite Member
    Messages: 11

    I replaced the seal today and you don't have to drain anything. The seal is not under any kind of pressure while the pump is off and it appears is not even under pressure while it is on. It is just there to mainly keep the dirt out. Anyone else who might have to replace one of these does not need to drain their hydraulic tanks.
  3. lawnmaniac883

    lawnmaniac883 LawnSite Silver Member
    Messages: 2,613

    So, if it was under no pressure, etc then why was it leaking?

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