Gravely pm30h air in hyd system

Discussion in 'Mechanic and Repair' started by acofwv, Nov 19, 2013.

  1. Restrorob

    Restrorob LawnSite Fanatic
    Posts: 11,023

    OK....... That wasn't what I was talking about but at that time I didn't have numbers to see exactly which hydro pump you have on that unit.

    But, I feel this popped valve is your issue...... I suggest cleaning the top of the hydro off real well so nothing drops down into these ports, Then remove both check valves and see if you can then push the popped pin back into place with your finger then perform this test;


    If the pin stays down and both pass the spring & leakage test, Re-install and purge as you did before by removing the plug on top......
  2. acofwv

    acofwv LawnSite Member
    Posts: 7

    Hey Restrorob, Thanks for the help, the check valve was the problem. Sorry it took a while to reply, been on a weeks vacation.THANKS AGAIN
  3. Restrorob

    Restrorob LawnSite Fanatic
    Posts: 11,023

    Good Deal ! :weightlifter:

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