Walker hydro break in

Discussion in 'Mechanic and Repair' started by Cleancut59840, Mar 17, 2013.

  1. Cleancut59840

    Cleancut59840 LawnSite Member
    Posts: 19

    I just replaced the right hydro pump on a walker yesterday and now it will act sluggish intermittently. They will track together until I try to turn and then the new one will slow down and not power through the turns. The reservoir appears appropriately full. Is there a break in procedure for these or an adjustment other than for the control levers? Help!

    Thanks!
     
  2. ericg

    ericg LawnSite Silver Member
    Posts: 2,505

    There is no break in procedure. In fact, the hydros are sealed for warranty purposes so that no one tampers with them. Check and make sure that the control lever is not getting hung up. Is your pulley on that hydro worn at all? Is the damper on that hydro worn? What was the reason for replacing the hydro in the first place? Did you check your final drive while the old hydro was removed?
     
  3. Greg78

    Greg78 LawnSite Silver Member
    Posts: 2,010

    Air bubbles in the reservoir?
     
  4. Cleancut59840

    Cleancut59840 LawnSite Member
    Posts: 19

    I had to replace the hydro because the control arm bearings were bad and it had a lot of lateral movement. The final drive looked and felt real good. I put on a new pulley at the same time. I will double check that it is not getting hung up. I have never replaced the steering dampers and have just over 1400 hrs. How do I k ow if they are bad? It worked fine with the old hydro.
    Posted via Mobile Device
     
  5. Cleancut59840

    Cleancut59840 LawnSite Member
    Posts: 19

    I had to replace the hydro because the control arm bearings were bad and it had a lot of lateral movement. The final drive looked and felt real good. I put on a new pulley at the same time. I will double check that it is not getting hung up. I have never replaced the steering dampers and have just over 1400 hrs. How do I k ow if they are bad? It worked fine with the old hydro.
    Posted via Mobile Device
     
  6. ericg

    ericg LawnSite Silver Member
    Posts: 2,505

    Operate the lever and see if it gets hung up as the damper spring compresses and returns.
    In addition, I know that Eaton has had some issues lately with these hydros. It could be that you got a defective one out of the box. Normally, especially on Walkers, you install them, set up the linkage and go.
     
  7. Cleancut59840

    Cleancut59840 LawnSite Member
    Posts: 19

    I operated the lever about 50 times or so and it appears that the damper is moving full motion pretty well. It almost feels like there is an air bubble. Would a bubble work itself out without breaking the seal? I can't see how it would without a vent of some sort. Is there a place where I can read about the eaton issues to see if they are similar?
     
  8. ericg

    ericg LawnSite Silver Member
    Posts: 2,505

    Here is a link to the repair manual for the unit
    http://www.mywheelhorse.com/graphics/file/Transmissions/ea7p1320_492-4003.pdf
    Removal of the hex bolt for venting is only recommended when initially filling the unit.
    If you want to try it you can but these hydros are self contained and do not normally require bleeding like a separate pump/wheel motor setup.
    I would call Eaton if the problem does not get resolved.
     
  9. BPS##

    BPS## LawnSite Senior Member
    from WY
    Posts: 828

    I would not unseal that unit in any way.

    This will void your 1000 hr warranty.



    Check your belt and tensioner. I've had issues with those that produced sluggish results.
    When all else fails call the dealer.
     
  10. ericg

    ericg LawnSite Silver Member
    Posts: 2,505

    Thanks BPS, that is what I was trying to get across. Eaton seals the units for a reason and any tampering voids the warranty on a $800 unit.
     

Share This Page