>From personal experience, when it comes to removing those rotor screws an
impact screwdriver is worth every penny. This is the one I have, and it
works every time:
http://www.craftsman.com/craftsman-impact-driver/p-00947641000P
-Larry
On Thu, Jul 2, 2015 at 10:16 PM, David Scheidt <dmscheidt@gmail.com> wrote:
> On Thu, Jul 2, 2015 at 7:55 PM, John T. Blair <jblair1948@cox.net> wrote:
> > I inadvertantly sent the reply to Jim only. So I'm reposting for the
> group.
> >
> >
> > At 03:33 PM 7/2/2015, you wrote:
> >
> > >Thanks John. My follow-up question was going to be on the value of
> > inexpensive
> > >rotors. :)
> >
> > >The only reason for wanting to avoid replacing the rotors (besides
> just being
> > >cheap) is because they are held on with two screws that seems to
> > almost always
> > >rust in place. From all that I have read, those two screws turn this
> from a
> > >quick simple job to one that can take a day.
> >
> > While this is true, here are some comments:
> >
> > 1. These screws aren't required. They are there to hold the rotor on
> > the hub while
> > the car is on the assembly line.
> >
>
> If that is the only purpose, manufacturers would have come up with
> someting substantially cheaper than drilling and tapping holes in the
> hubs. The screws serve to properly locate the rotor against the hub.
> Without the screws, the first lug nut you install does that, and isn't
> properly torqued for holding the wheel on. The later lugs are
> relatively over torqued, which bends the rotor, which leads to wear or
> pad deposits (depends on the pads: semi-metallics tend to wear the
> rotor away, ceramics tend to leave deposits), which leads to pedal
> pulsation and "warped rotors" (which aren't warped at all.). This
> problem is exacerbated by using an impact wrench to install wheels,
> and by improper order of tightening.
>
> One additonal step: clean the surface of the hub that the rotor bears
> on. If there's rust or crud, the rotor won't be square to the
> calipers, and it will "warp".
>
>
> --
> David Scheidt
> dmscheidt@gmail.com
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