Oil & Fuel NH M135 HYDRAULICS

[dommas]

HI GUYS, I NEED SOME HELP PLEASE. I HAVE A NEW HOLLAND M135 , I FITTED NEW HYDRAULIC OIL FILTERS AND OIL , NOW I CANT GET RID OF AIR IN THE SYSTEM. PUMP MAKES A BAD HUMMING SOUND AND THE TRACTORS 3 POINT, POWERSTEERING ETC. IS NOT FUNTIONING CORRECTLY. THE FILTERS HAVE OIL IN, AND LOGIC TELLS ME THAT IT SHOULD BLEED ITSELF . CAN THE PUMP BE CAVITATING? BUT WHY NOW? ARE THERE ANY BLEEDING SCREWS THAT I DONT KNOW OF MAYBE?
THANKS
DOM

 

[J_J]

If the IN port of the pump is flooded, and is not sucking air, the hyd system should self bleed with operating all valves many times.

 

[dommas]

Hi JJ
Thanks a lot, will do so and keep you updated. Can it be pump failure? Or a solenoid that is stuck open or closed?
Cheers
Dom