Farmall m oil pump help

[Holt Alcon]

Does anyone know of a way to get an M engine oil pump to pump more presure. Or is there a rebuild kit. When you tractor get good an hot it has lower then normal presure. I wanted to make sure it was not the pump, then move on to replacing the bearings. Thanks for any help.

 

[Horter Restoration]

If this is just a parade tractor with occasional and not for heavy farm use I have used a lighter weight oil to increase the pressure some. Granted it doesn"t solve to problem. If you are using it to pull equipment or for hard use disregard this post. More than likely it is time for an overhaul though.