right wheel thump

What would cause this when applying the brakes slowig down? It is a
thump that slows as the vehicle slows. It is a 96 chevy 4x4. Happened
after I had the rotors turned.

Could be a contaminated spot on the rotor, or maybe the rotor wasn't
turned true, or (I've heard) a "hard spot" on the rotor. Maybe even a
piece of rust that didn't get removed when the rotor was turned .



Dave

The hard spot was the opposite wheel. It only happens when the brakes
are applied fairly hard.

Or they could have left too much play in the wheel bearing,

What eactly do you meanand how can I check that?
Al Bundy wrote:
> Or they could have left too much play in the wheel bearing,

Jack the wheel up, place hands at 12 and 6, and pull with one hand
while pushing with the other, then push-and-pull, back and forth, and
see if the wheel wiggles.

It could also be the caliper moving slightly in/on its mountings.

Dave

carnut wrote:
> What would cause this when applying the brakes slowig down? It is a
> thump that slows as the vehicle slows. It is a 96 chevy 4x4. Happened
> after I had the rotors turned.

What method did you use to determine that the *right* wheel is the
problem area?

If all you had done was a front brake job, I would suspect that one of
the rotors is rust-jacked, turned improperly, or the wheel was not
torqued in proper sequence - possibly catching the rotor at an angle
other than flat against it's hub.

Toyota MDT in MO

All I did is have the rotors resurfaced because the front end would
bounce when the brakes were applied. The pads were good so I left them
on.

I did notice the "sockets" where the caliper botls go would not come
out easily as the other side did. I took them out and they were scored
a little. I cleaned them up and greased them and reinstalled them. I
did notice a little round seal inside the bore looked broken a little.

I tested the wheel before I started and there was no play I could tell.
I tightened the wheel when done by hand using a "cross" sequence for
lack of a better term. Then tightened with my ratchet. Then took the
jack off and finished tightneing them with the ratchet.

How can I tell what this is and did I do everythign correctly?
Comboverfish wrote:
> carnut wrote:
> > What would cause this when applying the brakes slowig down? It is a
> > thump that slows as the vehicle slows. It is a 96 chevy 4x4. Happened
> > after I had the rotors turned.
>
> What method did you use to determine that the *right* wheel is the
> problem area?
>
> If all you had done was a front brake job, I would suspect that one of
> the rotors is rust-jacked, turned improperly, or the wheel was not
> torqued in proper sequence - possibly catching the rotor at an angle
> other than flat against it's hub.
>
> Toyota MDT in MO

I went over the rotor after being turned with sandpaper for a "non
directional" finish.

Listening. It sounds like the passanger side.
Comboverfish wrote:
> carnut wrote:
> > What would cause this when applying the brakes slowig down? It is a
> > thump that slows as the vehicle slows. It is a 96 chevy 4x4. Happened
> > after I had the rotors turned.
>
> What method did you use to determine that the *right* wheel is the
> problem area?
>
> If all you had done was a front brake job, I would suspect that one of
> the rotors is rust-jacked, turned improperly, or the wheel was not
> torqued in proper sequence - possibly catching the rotor at an angle
> other than flat against it's hub.
>
> Toyota MDT in MO