I haven't encountered this particular phenomenon, yet, but it doesn't sound
like the hub bearing. Those are roller bearings and, unlike tapered bearings
(like in the front hubs) they aren't designed in particular to really limit end
or fore-and-aft play.
What could allow this type of 'rocking' would be looseness in the differential,
namely the splines on the end of the axle and in--might have the wrong term or
part, here--the carrier. I'd pull the axle and have a look at the splines
before pulling the hubs (you have to pull the axles to get the hubs out
anyway).
I had the 'clicking noise' problem on a front wheel for years. Finally got rid
of it with new brake pads. Some pads can leave residue on the rotor which
feigns 'warping,' but it's really just uneven buildup of deposits from the pads
(Carroll Smith wrote an article about this way back).
My guess is you have a similar problem.
Bob
--------------------------------
Bob Spidell - San Jose, CA
----- Original Message -----
I am looking to verify a diagnosis. I am running rear disc brakes and have
developed a rythmic clicking noise from the right rear that stops when the
brakes are applied lightly. I thought I had a warped disc and the noise was
the disc slapping the brake pad on each rotation. I jacked up the rear and
found I could move both rear wheels in and out slightly but the right rear I
can "rock" . That is if I grab the front and rear of the tyre I can pull the
front out and rear in and vice versa. Rims are near new and the splines are in
good condition. The wheel spinners were of course tight.
I suspect it is wear in the hub bearing as I have disassembled the right rear
and can find nothing else broken or worn. The bearing runs quietly but there
is some in out play.
It there anything else I should be checking before I order new bearing etc?
Thanks
Pieter
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