Not change hydro oil?

Discussion in 'Mechanic and Repair' started by wildstarblazer, Feb 13, 2019.

  1. wildstarblazer

    wildstarblazer LawnSite Bronze Member
    Messages: 1,151

    I was debating whether or not to change the hydro oil from my ferris stander. Last time I did , it started leaking from the the seals and I had to have both pumps repaired which took about 3 weeks and was under warranty. No warranty this time. So I'm thinking about leaving it in there till it dies . Has 800 hours. What do you think?
     
  2. Charles

    Charles Moderator Staff Member
    Messages: 11,658

    I just keep my filters changed when it comes to hydros
     
  3. rixtag

    rixtag LawnSite Senior Member
    from Lehi Ut
    Messages: 368

    Unless there is contamination or it's burned I don't replace my fluid, only the filter. Fill the filter and then check the level afterwards.
     
  4. Koehn's Lawn Service

    Koehn's Lawn Service LawnSite Senior Member
    Messages: 876

    If it doesn't smell burnt and is clean maybe I change my hydros gear boxes every winter try and syphon it out if you have room to get tube to bottom
     
    hort101 likes this.
  5. weeze

    weeze LawnSite Fanatic
    Messages: 16,396

    i change mine at 500hrs as recommended. if you remove the filters in a john deere or a scag cheetah all the oil comes out anyways. there's no way around it. :laugh:

    so far i have 1400hrs on the deere hydros and they are still good. only have 800hrs on the cheetah and all is good.

    the only bummer is it costs $100 every time you change the hydro fluid and filters.
     
    DXN1EL, Walker56 and hort101 like this.
  6. Koehn's Lawn Service

    Koehn's Lawn Service LawnSite Senior Member
    Messages: 876

    Yeh but that is good maintnence and cheaper than buying new hydros I change mine every winter in 30 years I've only ever replaced one set of hydros out of 5 walkers
     
    DXN1EL, Breezmeister, weeze and 2 others like this.
  7. Charles

    Charles Moderator Staff Member
    Messages: 11,658

    There are exceptions to every rule but I have over 5000 hours on a Exmark lazer. Only changed the filter one time when it started leaking. That was after the 5000. Probably could use some new pumps. Think I got my monies worth:laugh:
     
  8. Koehn's Lawn Service

    Koehn's Lawn Service LawnSite Senior Member
    Messages: 876

    I would say you have got your moneys worth I need to rub on your head maybe I could get some of your luck on things lol
     
    weeze, hort101, Charles and 1 other person like this.
  9. Rockbridge Lawn Care LLC

    Rockbridge Lawn Care LLC LawnSite Bronze Member
    Messages: 1,089

    here's the thing..if you change just the filter, you by default are changing about 25% of the fluid capacity...and its a sealed system (in theory) so if you only change the filters your still pretty well off....full filter and fluid (via syphon or dumped from the charging system) is just extra insurance assuming no dirt gets in

    in my case the same 15-50 oil goes in the kohler and the hydro.. a motor oil and filter change and hydro fluid and filter change is a full 1 gal of fluid and the two respective filters
     
    Breezmeister likes this.
  10. windflower

    windflower LawnSite Bronze Member
    Messages: 1,290

    I haven't opened mine yet. 2500 hours so far. Still work like new. Previous mower hydros never lasted this long despite oil changes. Distributor suggested I was getting dirt in them when changing the oil.
     

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