Raybestos hub assemblies have engineered in improvements and solutions to problems discovered after the OE parts have been subjected to the grueling realities of real life driving. Raybestos® hub assemblies are continuously tested during the manufacturing process for endurance, temperature control, hydraulic and salt resistance, metallurgical integrity, vibration and other factors that might limit performance, safety or durability.Features & Benefits:
Design engineered
High carbon steel forgings
CNC machined
Computer controlled heat treating and hardening
Acrylonitrile-Butadiene high performance rubber seals
PA66 Super Strength retainers
100% spin fixture inspected sensors for repeatable accuracy
During installation, use a Torque Wrench to tighten the axle nut to the manufacturer's specification. Do not use an impact wrench as it is easy to over tighten the axle nut. The torque specification can be found in your owner's manual
Symptoms Of A Failing Wheel Bearing & Hub
Wheel hub units are low maintenance parts, but that doesn’t mean they last forever. Uneven road surfaces, heavy driving conditions (such as towing or racing), and under-inflated tires put extra strain on the hub bearing and can lead to premature failure. Common signs of a bad hub unit include:
A humming, rumbling or growling noise that increases with acceleration
A loud constant whining or grinding noise when the vehicle is in motion
Excessive play in the steering wheel
Steering wheel vibration that changes with the vehicle speed or as the vehicle turns
ABS system malfunction
How To Identify The Faulty Wheel Bearing & Hub
It is often difficult to pinpoint which hub unit has gone bad while driving because noise and vibration
travels through the frame of the vehicle. Here are a two tests you can do to help identify which hub unit has gone bad:
Shake Test: Identifying Play or Looseness
Lift your vehicle so the wheel is off the ground
Place your hands on the sides of the tire and try to shake the wheel
Now place your hands on the top and bottom of the tire and try to shake the wheel again
If you feel movement in both directions, you have play in your bearing and it needs to be replaced
Note: If you feel movement when shaking the wheel left to right, but not top to bottom, you could have a worn out tie rod end. Similarly, if you have movement top to bottom, but not left to right, you may have a worn out ball joint.
Spin Test: Identifying Noise or Grinding
Lift your vehicle so the wheel is off the ground and can spin freely
Spin the wheel, in either direction, and listen for a grinding or howling noise
If you hear a loud grinding or howling noise, that increases with the speed of the wheel, you have a failed bearing that needs to be replaced
Note: It is best to test both front or both rear bearings at the same time so you can compare the difference between the two sides. If you have a failed bearing, there will be a noticeable difference in the amount of noise you hear during this test
Installation Tips