RE: REAR END NOISE 9,25
Carrier side bearing are common to pit and make noise. the 9 1/4 axle isn't difficult compared to some others but you need some special tools to service it. the 9 1/4 doesn't have shims behind the carrier bearings, they have an adjustable collar to adjust the backlash and preload. the tool you need is a special 4 foot long bar with a big nut on the end (can't remember size, sorry). you run this tool down the axle tube after you reassemble and rotate it to adjust the collars and set the preload torque. you could probably make one easy if you know the nut size.