How to change water pump pully on a 580C case backhoe

SOURCE: The pully on my water pump is lose

The pulley on the water pump is separate from the pump on both the 6 and V-8 engines (you didn't specify which engine was in your truck).
If the pulley is wobbling around and grinding, the bearings have failed on the pump. The fact that it has not leaked is not unheard of. REPLACE THE PUMP! Continued operation will cause the impeller (the side of the pump which moves the water) to chew up the housing. Not to mention leaving you stranded.

SOURCE: 1996 Chevrolet Cavalier, 2.2 Water Pump.Can't remove pully.

USUALLY I LOOSEN ALL OF THE BOLTS BEFORE I TAKE THE BELT OFF TO HELP KEEP THE PULLEY FROM TURNING... USE A LONG SCREWDRIVER OR PRYBAR .. PUT IT BETWEEN THE TWO OTHER BOLTS AND LOOSEN THE 3RD. CONTINUE TILL ALL ARE LOOSE.. IF YOU HAVE ALREADY REMOVED 2 OF 3 BOLTS THEN RE INSTALL THE OTHER 2 A FEW THREADS SO YOU CAN PUT THE SCREWDRIVER IN BETWEEN THEM TO STOP THE PULLEY FROM TURNING.

SOURCE: water pump housing problems

your pump wep hole, bad pump not pep boys fault :( sorry just need water pump.

Testimonial: "sound like the problem to me too. they say they put a new pump in but I dought it...."

SOURCE: after changed a new water pump,timing belt,idler pully,tensioner for 2004 lexus ls 430, when start engine has a noise look like from pully

COULD BE A BAD BEARING IN THE IDLER PULLY OR THE TENSIONER ON THE TIMING BELT OR THE SERPENTINE BELT. IF ITS A SQUEEL IT MAY BE SOME COOLANT GOT ON THE SERPENTINE BELT. TRY TO WASH THE BELT WITH WATER AND LET DRY COMPLETELY. IF NOISE REMAINS RETURN TO THE SHOP THAT DID THE WORK.

SOURCE: i have a case 580c just rebuilt motor but fuel keeps pouring into motor i changed the seals on fuel pump but it still pours all the fuel back into the engine can anyone help me out PLEASE

i asume it is diesel did u replace the fuel injecter seal??