Water And Debris Cause Bearing Damage
Although inadequate lubrication can be classified into eight basic categories, two of those causes – water contamination and debris contamination – can be particularly attributed to bearing damage. The main common type of bearing damage with moisture/water exposure is rusting, pitting and corrosion – a condition known as “etching.”
Is Replacing Wheel Bearings in Pairs Ethical?
Replacing wheel bearings on both sides of a vehicle used to be standard procedure as it was economical insurance against a comeback. In those days, a set of bearings and races could be purchased under $5 a side, including the seal. A technician worth his salt could install and adjust a set of bearings in
Wheel Bearing Noise Diagnostics
The classic symptom of a bad wheel bearing is typically a cyclic chirping, squealing or growling noise that changes in proportion to vehicle speed. The sound may disappear at some speeds or only occur at certain speeds. The noise may get worse when turning, or it may disappear momentarily. So, it’s difficult to make a
False ABS Activation After Wheel Bearing Hub Replacement
Vehicles: All ABS-equipped vehicles Condition: Vehicle had wheel bearing hub replaced on one side. Repair Procedure: If you diagnose a bad hub bearing on one side of a vehicle and the ABS wheel speed sensor or tone ring is integral to the bearing, you may need additional repairs to restore proper ABS functioning. In many
Spotting wheel bearing failure
Wheel bearing failure, regardless of the type of wheel bearing, may not give much warning notice and can also be tricky for the customer to describe. When a customer comes to you with complaints, start by writing down all of their problems and concerns. Then, ask questions related to the customer’s concerns so that you
Wheel Bearings: Measurement and Torque
Wheel bearings are either of the ball or tapered roller variety. Front wheel bearing applications are an angular-type ball bearing, which will accept greater thrust loads than a Conrad-type bearing, and will accept a 100 percent load in the radial or thrust position and any combination of a 100 percent load. A tapered roller bearing
Speed Sensor Diagnostics: The ‘If’s’ of Sensors and Speed Explained
If all of the wheel speed sensors are generating a speed signal, and they all agree, the wheel speed sensor (WSS) is not an issue, but something else might be, possibly an intermittent wiring fault in one of the WSS circuits. If one of the WSS PIDs reads zero mph, and the other three are
Cartridge-Style Wheel Bearing Inspection, Installation Nuances
More and more vehicles are being equipped with cartridge-style wheel bearings — a style that requires a lot more labor to replace when compared to hub units or tapered roller bearings. What’s new? What should you watch for? While the fundamentals of the job have not changed since the 1980s, what has changed is the
Measuring Ball Joint Wear
Detecting and measuring wear in a ball joint is critical to ensuring the safety of a vehicle. When a ball joint fails, the driver loses control of the vehicle. This can result in damage not only to the suspension, but also the axle shafts, brakes and even the body.
Wheel Hub Bearing Q&A
What is a wheel hub bearing and why is it so important? Though you may never even see it, a wheel hub bearing unit is an important part of a car’s wheel assembly, enabling wheels to turn freely and playing a crucial role in the safety and handling characteristics of a vehicle. Comprised of precision-manufactured bearings, seals and sensors in one pre-assembled unit, a wheel hub bearing unit is critical to performance, from the smoothness of the ride, to fuel efficiency, to the integrity of anti-lock breaking systems (ABS).
Saab Tech Tip: Snap Or Pop Noise On Turns From The Front Suspension
A customer may complain of a snapping or popping noise on turns from the front suspension. This typically occurs on sharp turns such as a parking lot maneuver. Duplicate the concern to verify the noise is coming from the front suspension. Read on for recommendations and instructions.
Hyundai Feature: Drivetrain Noises And Wheel Bearing Replacement
Don’t let customers lead you down the wrong diagnostic path. While wheel-bearing noise is one of the toughest problems for customers to describe, says Import Specialist Contributor Bob Dowie, it’s not unusual for it to come on so gradually that the customer may not even notice it until you mention it after an unrelated road test.