Kobelco SK60V Hydraulics problem

jeudi 22 septembre 2016

Hello,

I recently bought a SK60 Mark 5 -99 machine and now i have noted some strange behavior when lifting the arm. If I lift the arm and release the control lever (joystick) the hydraulic pressure remains on for a while (few seconds), the arm stops immediately when I release the lever but pressure still on somewhere. It will take the engine rpms down and you hear the the pressure go past some relief valve before it will calm down again. Arm in is no problem, actually all other functions work as should. You can hear that immediately when trying to lift the arm it will start to whine somewhere. This machine do not have a hold valve mounted on the arm cylinder.

It is fully usable as is but this thing get on my nerves...

Rhrs ~8500, no additional hydraulics, original machine except for swing gear replacement.


Thankful for any help.

Cheers


Kobelco SK60V Hydraulics problem

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