Posted by Steve Kanavas on August 23, 1999 at 18:18:40:
In Reply to: How do I look at my bearings and tell if they are bad? posted by M-37 newbie on August 23, 1999 at 11:44:20:
Well, we all know what new ones look like. Shiny, race surfaces with gringing marks on them. A dull finish from usage or light oxidation is ok.
Technically when the grind marks are gone, the bearing is worn so say the pundits. My truck has 70% of them that are smooth and work just fine.
Speaks well for Dodge's oversizing of the bearings.
Look for deep pits on the races, rollers, or cones. This is usually rust pitting from water on the bearings due to long periods of inactivity.
Look at the bearing cones, races or rollers for areas of the surface seemingly missing. This rough area is a spalling failure, and you should toss the bearing.
Semi stationary roller or ball bearings such as on the steering knuckles can often "Brinnel". This is due to loading with minimal motion, (steering wheels straight ahead) causing the ball or rollers to actually dent the races.
Be sure not to over preload bearings. It's too easy to do. A barely perceptible wiggle is usually ok.
** On the steering knuckle bearings, don't believe Dodge's shop manual spec for assembly. It's too tight, and creates too much drag. I've been waiting 3 years for mine to loosen up, and will likely spend a few hours to add another shim to loosen them up.
steve