It's either a rotor (disc brake) or drum (Drum brake) either way you have to remove the wheel for both, for drum it takes a firm rap with a dead blow around the side of the drum and then should pull off. For Disc Brakes you remove the caliper and pads the the same goes for the rotor gentle tapping on the back side and it should come free.
The rotor is bolted to the inside of th e wheel hub on a 3500. You need to remove the brake caliper, axle shaft, and wheel hub.
Can figure out how to remove rear rotor assembly to replace wheel bearing assembly on a Maxima 2004 Nissan
Remove wheel. Remove brake caliper (2)Bolts. Remove brake caliper bracket (2)Bolts. Remove center nut under dust cap in center of rotor. Slide rotor off and gently tap hub assembly out.
Lift the wheel in Question. Remove the tire. Remove the disc brake assembly. pull the rotor off. replace in reverse order.
You remove the caliper only to replace pads, and then caliper mounting bracket to replace rotor.
You need to remove the entire spendle assembly. Lay it on an open vise and with a correct size rod, from the inside, drive the center out until the rotor and outside bearing drops out. Do not disturb the bearing. Remove the four bolts from the rotor, which you can now get too and the rotor will come off. Replace the rotor with a new one and lay the spendle assembly on a hard surface and carefully drive the shaft back into the spendle. If you have a "slide puller" you can actually remove the assembly while the spendle is still on the car.
Remove wheels Remove caliper mounting bolts Slide caliper off rotor Rotor should slide off hub
Remove wheels Remove caliper mounting bolts Slide caliper off rotor Rotor should slide of center hub
You have to pull that whole assembly apart to get to the bearings. The wheel comes off, then the brake rotor, then you have the hub assembly. The bearings are inside of that.
You will need to remove the tire and wheel of your 1998 Oldsmobile. Remove the brake pad assembly. Tap on the brake rotor with a hammer or mallet. Slide the brake rotor off. Reverse the process to install the new rotor and pads.
They didn't make this one very easy to replace. Start with jacking up the front end and let it down on jack stands under the lower control arms, then remove the wheel, brake caliper, axle nut, disconnect abs speed sensor harness, remove the bolts holding the hub assembly to the knuckle and remove the hub assembly with rotor attached. Once you have the hub assembly off you can drive out the wheel studs and remove the rotor.
Hubless design: Raise car, remove wheel, remove caliper, remove brake pad holder, remove rotor. Hub/rotor assembly: Raise car, remove wheel, remove caliper, remove brake pad holder, remove axle nut and cotter pin, remove outer wheel bearing, remove hub/rotor assembly, separate rotor from hub assembly. Re-pack wheel bearings with grease upon reassembly.
Take it to your mechanic but make sure you bring your first born to pay him.