What causes uneven runout on a wheel hub bearing?
• Uneven rotor or brake pad wear. This is normally indicative of a bad caliper and/or a bad equalizer, which is not bearing-related. Severe looseness related to a worn or damaged bearing can cause excessive runout, which can cause uneven wear on the brake pads and/or rotor. The most common cause is a warped rotor due to the caliper not retracting.
What happens when a wheel hub assembly goes bad?
Typically when a wheel hub assembly goes bad it’s actually the wheel bearing inside the single assembly that is damaged. This part will make a roaring sound, similar to a metal-to-metal grinding sound when the bearing is wearing out.
What are the symptoms of a bad wheel bearing?
Noise is a classic sign of a bad wheel bearing or wheel hub bearing. Here are some indicators of a worn wheel hub bearing or other wheel-end damage: • Snapping, clicking or popping. This can indicate a worn or damaged outer CV-joint. However, it also can be related to excessive bearing endplay, usually associated with inadequate clamping.
What kind of hub assembly does a car have?
Today’s modern cars, and those manufactured after 1997 are equipped with a single bearing and hub assembly that is attached to each wheel and tire on a vehicle.
Typically when a wheel hub assembly goes bad it’s actually the wheel bearing inside the single assembly that is damaged. This part will make a roaring sound, similar to a metal-to-metal grinding sound when the bearing is wearing out.
Where are hub assemblies and wheel bearings located?
Why you should maintain hub assemblies and wheel bearings. Located between the brake drums/discs and the drive axle, the hub assembly is mounted to the holding bracket of the chassis on the axle side. On the drum/disc side, the wheel is connected to the hub assembly via bolts. The wheel bearing itself is inside the hub unit.
How many wheel bearing problems are caused by noise?
Diagnosing car troubles by sound alone is an inexact science, but you should not ignore new or unusual car noises. According to an often-quoted study from Braxton Research, 51% of wheel bearing problems are found because of noise (24% are found during a brake job and 19% during an alignment).
What makes a wheel hub make a roaring sound?
This part will make a roaring sound, similar to a metal-to-metal grinding sound when the bearing is wearing out. This sound is caused by lack of lubrication inside the bearing, a misaligned bearing or one that has cracked due to impact with another object.