I have a 2002 f150 with 210k on it. The last time I did the brakes I found that the hub had .010 runout that was transfering to the rotor making it out .015 on the outide edge. I did not feel any vertical play in the hub with the truck jacked up and grabbing the tire top and bottom trying to check for movement. The bearings are smooth sounding. I used some rotor shims from Napa to get most of the runout out of the rotor, but still could not get it all. After 30k I am getting breaking shimmy. What would cause the runout in the hub if the bearings are good. I am thinking of replacing both hub assemblys this weekend and rechecking runout. Anyone run into this problem?

 

OK, I will answer my own question in case anyone else runs into this problem and cant figure it out. I replaced the bearings on both sides and this cured my runout. Passenger side hub flange runout had .012 b4 replacement and drivers side had .006. After replacement, both side's were less than .001. This cured my rotor runout also. I also replaced the calipers on both sides turned the rotors and put Rancho rs9000xl shocks all around. Truck drives and stops like a dream now.

 

Is your truck a 4x2 or 4x4? Curious why you replaced the calipers too?

 

Truck is a 4x4. I replaced the calipers because it was easier than rebuilding them. Generally, with over 200k you should rebuild or replace with remanufactured as a general wear and tear maintanence item. There was indications that there was more wear on one side of the rotor. This is usally caused by a caliper piston hanging up.