LB400 Loader Leaking Down

[Bfulme]

My Loader will lift the front of the tractor up just fine but as soon as I left off the control valve it goes back down and won't hold the tractor up. This is ok most of the time except when I have the backhoe attachment on. I need the front end to stay up while I dig. None of the cylinders leak fluid. I'm sure this is a common issue just need some advise on the fix. Thanks. Bill

 

[North Idaho Wolfman]

Normally the only cause of that is bad internal seals that are leaking.
Could possibly be a spool valve issue but that's not common.
Swap the lines so lift is roll and roll is lift and find out if you get the same results.

 

[Bfulme]

Good thinking. I will try that. Thanks!