backhoe noise ?

[crankin]

just got a new dk45s w/ a woods 90x hoe , I can hear the fluids making noise as the hoe is being operated . its not a noise of stressing its limits cause i'm just moving it in various positions w/ no load . sounds like air could be in there or something ... it,s a distinct swooshing sound of the fluid .ihad tractor at apprx 1800 rpm . the front 451 loader goes up and down and makes no noise . any help would be appreciated before i pester the dealer with silly questions thanks.... it's a beast of a tractor though gotta build a new barn to store it now

[Dmace]

I run my backhoe at 2300 rpms, 2600 for stump digging. I do hear a faint swooshing sound but only at certain functions. I beleive it is just the reverse flow of the hydraulics as the pistons retract.