When the car is on straight road, the ring gear, differential case, differential pinion gears, and two differential side gears all turn as a unit without any relative motion.
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Spokes extend from the wheel to the wheel hub, which is fastened securely at the top of the steering column.
Sometimes called a steering lever, this forged steel component connects the drag link to the top portion of the driver’s side steering knuckle and spindle.
Drum brakes use an internal expanding brake shoe with the lining attached, working within the confines of a rotating brake surface called a brake drum.
A hydraulically operated caliper is used to force the lining friction material against the braking surface of the rotor for stopping wheel rotation.