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Here is a KEY experiment, which may determine whether we truly understand the physics of "UFO levitation"? In movie 1, we can see that lowering a spinning wheel will make a large base-wheel turn anti-clockwise. Or if we raise the same spinning wheel, that will make a large base-wheel...

13,847 просмотров • 7 месяцев назад •via X (Twitter)

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Replacing a Bad Wheel Bearing job done right. If you hear a roaring noise while driving or feel a massive amount of wobble in your wheel, you’re likely dealing with a shot wheel bearing. Leaving it unchecked isn't just annoying—it’s dangerous. Here is exactly how to tear it down, prep the surface, and install a fresh hub assembly correctly: 1. The Disassembly Remove the Wheel: Pop off the center hub cap, spin off the lug nuts with an impact wrench, and pull the wheel off the vehicle. Clear the Brakes: Unbolt the brake caliper bracket and lift the entire assembly away from the rotor. Pro-tip: Always hang the caliper securely so it doesn't strain the rubber brake line. Pull the Rotor: Remove the small retention screw holding the rotor to the hub. Give it a few taps with a rubber mallet to break the rust free, then slide the rotor off. Disconnect the Extras: To get clean access to the back of the hub, unbolt the lower control arm/suspension link. Carefully unbolt and pull the ABS wheel speed sensor out of the knuckle so you don't damage the wiring. Drop the Old Hub: Back out the bolts securing the wheel bearing assembly from behind the knuckle. A few solid strikes with a hammer will break the old, worn-out hub free. 2. The Critical Step: Prep Work Clean the Knuckle: A new part won't seat properly in a rusty home. Use a wire brush tool attached to a drill to aggressively clean out the corrosion and debris inside the knuckle, then blast it clean with brake cleaner. Be Nice to the Next Guy: Apply a generous coat of anti-seize lubricant to the inside of the knuckle and mounting surfaces. If you ever have to do this job again, you'll thank yourself. 3. Reassembly & Torque Specs Seat the New Hub: Align the brand-new wheel hub assembly and press it firmly into the clean knuckle. Torque It Down: Thread the wheel bearing bolts and suspension links back in. Never guess here—use a digital torque wrench to lock everything down to factory specifications. Plug in the Sensor: Reinstall the ABS sensor back into its slot and secure it. Reset the Brakes: Slide the rotor back over the studs, mount the caliper bracket back over the rotor, and torque the mounting bolts to spec (110\text{ NM} / ~ 81\text{ ft-lbs}). 4. Final Touch Mount the wheel back on, hand-start your lug nuts, and snug them down in a star pattern. Snap that center cap back on, and you are ready for a smooth, noise-free ride. Doing it right takes a little extra time, but proper cleaning and exact torque specs mean this repair will last.

Chuckling Charlie

30,261 просмотров • 4 месяцев назад