Hi guys, Our Kobelco SK210-6 has developed a weird problem or we just didn't notice is before we bought it. Bascially when you move the arm in, towards halfway of the stroke when the arm is just outside of being vertical to the ground, the arm just falls about 6-10inches and bounces a bit and stope moving inwards. So its kinda like 10 inches before vertical its almost like the pressure on the return line drops or something and the arm just falls down and then the pressure seems to catch up after 2-3 seconds and it continues to move in. Pretty weird. Would be grateful if someone can point us in the right direction. Thanks
Good day This issue generally comes down to fluid not keeping pace with inertia - lack of flow or loss of restriction on the rod side of the cylinder. Suggest you check that the engine is performing to spec - time the other movements to establish if the issue is isolated to the arm. Most common is loss of engine performance. Kind regards Uffex
Thanks for the reply uffex, but not engine and all other functions are working perfectly.
could it be some spool or valve issue. changed the in an rout hoses over and same issue even worse now
trying to swap the computer from our other machine to check quickly if its the arm regeneration solenoid causing the issue. Cuz when we remove a connector no fault is shown on the screen! which is weird because these things always flash a error code as far as i know