Interesting. I've never had that happen. How much torque did you put on them?
> So, my 2001 Ranger 4x4 needed new front brake pads, and while I
> was at it, I figured I might as well take a light cut on the rotors
> since they had some hard spots, were pulsing a bit, and I have
> access to lathes and carbide cutting tools.
> The bolts that hold each caliper mounting bracket to the spindle
> were super tight, and upon removal, I noticed they were coated with
> red locktight. I thought that was over kill, and simply tightening
> the bolts properly would be enough to keep them from coming loose.
> Anyway, after facing the rotors and putting on new, high quality pads,
> the brakes worked better than when they were new, and I was pleased.
> I made sure that all four caliper mounting bolts were super tight,
> but I didn't bother with the locktight.
> After a few weeks, I thought I noticed some rattling coming
> from the front end when I hit sharp bumps, and decided I better
> investigate soon. Real soon, as it turns out. While pulling up to
> a stop sign, I noticed a horrifying grinding, crunching sound from
> the front of my truck, and when my speed got down to about 3mph, it
> jerked to a stop *hard*. WTF? Putting it in neutral, I was able to
> push the truck easily, but put it in gear and try to roll with light
> braking, and it wouldn't budge.
> Come to find out, three of the caliper mounting bolts were loose, and
> one lower bolt was *gone*. The bottom of the caliper lifted and jammed
> against the inside of the wheel, locking it up. I just can't believe those
> bolts came loose, because I really torqued them down tightly, but they
> sure did. Apparently, the locktight was there for good reason... > Henry
>
> --
>
>formatting link