Hmmm, funny thing is though...sit down to read this.
.
.
.
.
There MIGHT be nothing wrong with your pump, it MIGHT only need bleeding and priming. To bleed just undo the screw at the top until oil runs out.
To prime, run motor on idle and hold pulley to full open position. if you use clear tube (yambits) you will see if its working ok.
lets hope the bearings are ok after this