Michael Ferguson wrote:
> Re: Rotors
> My local mechanic (non-LBC) tells me that, whenever they install new
> rotors, they ALWAYS put them on the machine to make sure they are
> true. Apparently, in their experience, new rotors are not always true
> so they turn them just a little to be on the safe side. Anyone have an
> opinion on this?
I just had this happen to me on a Chev. Suburban. I installed a new
generic rotor from Hi-Lo, and the car became almost undrivable--extreme
pulsing under braking. I pulled it and had it turned. I watched, and
it was very badly warped. After this, (which was one bad rotor out of
maybe a half-dozen I've personally installed), I know it can happen.
I don't know if you would see even this much run-out by just spinning it on
the axle. If you used a dial indicator, though, it would be very obvious.
Regards,
Ray
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Ray W. James, P.E., Ph.D.
Texas Transportation Institute
Civil Engineering Department
Texas A&M University
College Station, TX 77843
Phone (409)845-7436; Fax (409)845-3410
E-mail: r-james@tamu.edu
Date: 8/18/98 Time: 8:08:04 AM
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