pump noise

[adowellcomltd]

tn75da new Holland when tractor reaches normal operating temp starts making loud noise , maybe hydraulic pump. can increase rpms and sometimes noise stops.also transmission/pwr steering lights is on. any tips appreciated.

 

[Texasmark]

When is the last time you replaced your filter. How full is your fluid sump?

 

[adowellcomltd]

just replaced filters and hydraulic fluid levels ok. no leaks. get a transmission/power steering low pressure indicator light when started and light stays on. its a mystery.