Loader rolls back when front edge is set on ground

[twowoode]

An update to my loader problem. In order to make the bucket stay in place the tractor has to running above 2000 rpm. Factory rep claims that the rpm has to be that high for the pump to put out enough pressure to the back side of the cylinders to hold them in place. While this doesn’t make sense to me it does keep the bucket from rolling back.

 

[Dmacleo]

gc1723 I use doesn't roll back.
if I leave it curled up with bucket itself a little in air it MAY, over the day, bleed down and uncurl a bit. if I leave it with edge on ground it just stays there.
you've never accurately described your issue so who knows.

 

[wdchyd]

I’d say maybe your factory rep needs a refresher course on hydraulic troubleshooting. Your pump should be putting out full pressure even at idle (unless the pump is bad). If it requires revving up to produce full pressure then a flow/load meter will be needed to test pump properly. Even with a bad pump the cyls should still hold a load with valve spool in neutral.