identify power beyond connection

sparkyjc · Mar 26, 2007

How can I identify pby connection on massey 1533 tractor & 1525 loader with nimco controls?

MadReferee · Mar 26, 2007

I don't have a MF manual or diagram handy so try this.

First eliminate the 4 work port connections to the loader cylinders. You should now have 3 connections/hoses left to identify.
Trace the hose that goes to the transmission sump. This is your return to tank line.
2 lines should now be unidentified. If you can trace where they go, one should go to the pump or to the pump side of a hydraulic connection block. The other is the power beyond line that goes to the block and on to the 3pt.
Or, check the loader valve casting for markings.
Or, the connection on the valve closest to or next to the relief valve is usually the pressure inlet from the pump. The remaining line is the PB outlet.
Finally if all else fails, get the owners manual and rtfm.

Hopefully someone who has a MF will help.

JerryG · Mar 26, 2007

On the left side of the valve when seated, there will be two hoses or a hose and plug. The one closest to the joystick will have "T2" in the casting by it. The other one is the PBY.