The play may be in the hub bearing - has this been replaced recently? Also, be sure to torque the center nut to spec, so that the bearing won't fail prematurely. Also, check the front axle U-joint just behind the bearing for wear/looseness, as these are famous for going bad and causing noises.
When I took apart my rotor from the hub, I used my air hammer with a punch to knock the studs out to allow the hub bearing assembly and the rotor to separate. When I put the new hub bearing assembly back onto the rotor, I took three pieces of 2" x 12" wood, nailed them together and drilled 8 holes for the lug nuts to pass thru. I then set the hub assembly and rotor onto the wood jig and used the air hammer and punch to knock the lug studs back into the hub/rotor to get everything put back together again. I do not recall a washer being in between the rotor and the hub bearing assembly.
Last edited by AtomicDog; 08-03-2013 at 12:54 AM.