2006 Blue bird vision rear diff. issues
Hey all! I recently bought a 2006 Bluebird vision, It has a cat c7, Allison 2500, The issue I'm having is the rear diff. Is making a whining sound at 45 mph and 65mph and has a fair amount of slop when I have it in neteral and turn the driveline it will spin a good 1 1/2 " of free play. What is "Normal" for these rear ends? And yes the rear end is full of oil and clean! Any help on this issue is much welcome!!!