1520 hydraulic noise

[hillbilly2]

I have a 1520 gas with a loader on it. It makes a noise coming from the hydraulic pump area that sounds like a bearing going bad.

It goes away when any of the hydraulic functions are used but come back as soon as you stop using the loader/3 pt.

I just changed the pump coupling bushings and both halves of the coupler and that didn t make a difference.

Any ideas what else this could be.

Thanks.

 

[D-]

A chirping squealing sound if that's what you have usually
comes from the stroke valve. More annoying than harmful.