Kobelco SK50 UR2 Hydraulic problems

Hi Bought this from a salvage guy a couple of years back. Got it running and most hydraulic functions working correctly. It has a pattern changer, but we think this is in order.

Go all functions properly, apart from bucket arm/dipper and the off set/knuckle boom.

The dipper does tend to lift a bit, when you lift the main boom, it basically comes in until the ram is fully extended on the dipper, then the boom lifts, other than that it won't move. The offset won't move at all with the pedal,...

Kobelco SK50 UR2 Hydraulic problems

Kobelco SK50 UR2 Hydraulic problems