bucket trouble

[br389]

Hi guys I know this is off topic but I need some help..... my tractor bucket dumps by itself everything else works fine but it wont stay curled even with no weight in the bucket.. we thought it was the control valve so we bought a new one and $600.00 dollars later it does the same thing.. Any ideas?  Thanks

[OntarioAl]

br389
Check for a bypassing hydraulic cylinder
Al

[beenthere]

Some info on what tractor and what loader you have, might help.

And switching the hyd. hoses around to check out if it is in a cylinder on the bucket, or if it is in your control valve..   what led you to believe it was the control valve?

[North River Energy]

With the information provided, I'll vote with O Al. 

Worn/torn piston seal(s) and/or a loose piston nut.

[snowstorm]

packing in one of the cyl. with 2 hosed together it only takes one to leak by inside

[br389]

Its a mahindra 2615... I just had one cylinder repacked about two months ago.. we thought it was the control valve because we took it apart and there was a little score on one if the valves.. I also switched the hoses around and the same thing... one of the quick connect fittings had a piece of rubber in it would that be it? Thanks again for all the help

[snowstorm]

it is possible that something got in the circuit relief and holds the ball up just a little. but its more likely that the packing in the other cyl is leaking by. it dose  have 2 bucket cyl?? 

[Ken]

I also switched the hoses around and the same thing... one of the quick connect fittings had a piece of rubber in it would that be it?

That piece of rubber is probably packing.  Pieces of it may be stuck in a valve