Kioti CK 30 loader rollback droop under load

[DOCatRU]

Hi folks:

I have a recurrent problem with my FEL on my CK30. Over the past I had two separate instances where the loader would droop down under load. The first time it was fixed with a leaky hydraulic line from the loader to the joystick control valve. The second time it was fixed by a leaking o ring in the quick attach fitting.

The loader has been fine all summer. I lift logs and pallets of firewood to store in the shed. No problems. I did not use the tractor for 3 weeks. Last week, when moving a pallet of firewood to the house this problem showed up.

I can rollback the firewood pallet while on the ground and lift it into the air; but almost immediately the rollback starts drooping and it will not stop. If I move the joystick to the left it will not hold the load, nor will it hold the load if I increase the throttle.

I have a video demonstrating the fault, but can't seem to upload it.

I cannot see any sign of a hydraulic fluid leak. Your advice is most welcome!!

DOC

 

[TugBarge]

If I am understanding it correctly - we've seen this on new Kioti CS series loaders - we brought the roll cylinders to a local hydraulic shop and had them rebuilt - fixed the issue.
Cylinders are $360/ea from Kioti

 

[Billrog]

When my CK30 was doing that one of the cylinders had a seal gone on the piston. The seals were the same price as a new piston around $100 so I bought the piston and installed it right on the tractor in about 1/2 hr. To determine which cylinder I curled the bucket and let it bypass for a min. or so then felt the cylinders where the piston is in the curl location and the warmest one was the culprit. A heat gun would work as well.