LA504 Loader bucket cylinder bleeds to dump

[lew4ut]

I am needing some suggestions on what may cause my LA504 front end loader front bucket to always bleed / or creep to the dump position. I have added this loader to my B3200 tractor and the loader has done this since it was added to the tractor. I have to continually keep curling the front bucket to keep from dumping anything that I have loaded in the bucket. The LA504 was purchased new and just installed by me. The B3200 is a 2014 model and has the dual remote hydraulic control valve and quick connections that came on the tractor. Any ideas if this would be a valve issue with blow by causing the dump cylinders to slowly expand? or could it be a issue with the dump cylinders themselves?

Thanks
lew4ut

 

[D2Cat]

Your description sounds like a cylinder leaking internally. You didn't mention the age of the loader, but even if it's 5 years old, the seals leaking seems odd. I'd disconnect the quick connects (one at a time) to make sure they are seated correctly.

 

[lew4ut]

I'm sorry the LA504 loader is new.
I just tried this;
I curled the bucket and then disconnected both hydraulic lines for the bucket operation and the cylinders still expand allowing the bucket to dump. Would that place the problem in the hydraulic cylinders? If it is the cylinders would it be both of them leaking?

Thanks
lew4ut

 

[North Idaho Wolfman]

If it's new then it should have a warranty.
Get the dealer to fix, replace the loader cylinders.
Yes they are, like D2Cat said, leaking internally.
There is no easy way to know which one is leaking as they are connected in parallel, one moves they both move.

 

[rbargeron]

If the 2 lines are left disconnected at the valve, they will drain down. They'd need to be disconnected at each cylinder (all 4 lines) and plugged to isolate leak-by inside a cylinder.