Box blade drops when loader lifting load

[Sammypro]

Brand new here and can't find answer. When I am lifting a heavy load with the front loader the box blade slowly goes down. After the load is stable the blade will lift back up. Any ideas.
'86 Ford 1910 4WD.

Thank you

 

[cmhyland]

Sounds like a pressure issue. Is the machine low on Hydraulic fluid?

Regards,
Chris

 

[Sammypro]

Yes, that was my first thought. I checked the fluid and it was clean and at the high level on the dip stick in the tranny.

 

[J_J]

Does your box blade also descend overnight.

Using the loader should have nothing to do with the 3pt descending, as the loader gets the fluid first and the cyls are sending the fluid to the tank.

Maybe your 3pt lever is not in neutral.