AfterMarketNews Auto Care Pro AutoProJobs Auto-Video.com Brake&Frontend BodyShopBusiness Counterman EngineBuilder Fleet Equipment ImportCar Motorcycle & Powersports News Servicio Automotriz Shop Owner Tire Review Tech Shop Tomorrow's Tech Underhood Service

Toughest Spark Plug Changes

We have all been there before: scratched arms, busted knuckles and an aching back caused by a difficult spark plug replacement job. If you think they are getting tougher every year, you are right. Every new engine design is putting the plugs deeper...

Read more...

Improving the Head Gaskets, Fasteners Relationship

The relationship between head gaskets and head bolts is an intimate one. The clamping load applied by the head bolts is what allows the head gasket to maintain its seal. For this marriage to last, there has to be constant tension – not too much,...

Read more...

Top Ten Fuel Pump Fails

10. Strainer Blocks Fuel-Level Sender A fuel pump inlet strainer may be installed that is interfering with the travel of the fuel-level sensor’s float arm, which causes an optimistic fuel level reading. Dented fuel tanks may also cause a false reading...

Read more...

Why Alignment Angles Change

An alignment angle doesn’t change randomly. There is a cause-and-effect relationship between external and ­internal forces that can alter the geometry of a vehicle’s suspension. Having the alignment reading for only one angle on one corner is just...

Read more...

Using Recalls, TSBs as Brake Job Tools

You are getting ready to perform a brake job on a vehicle. While checking the torque specifications on the vehicle, you decide to hit the tab with TSBs and recalls. All of a sudden you are staring at a screen of brake recall notices and TSBs for that...

Read more...

Causes of Clutch Failure: Diagnosing Chatter

One of the most difficult clutch-related problems is chatter. Chatter is sometimes difficult to diagnose because it has many root causes, and some of them may not seem related at first. Chatter can be detected as a pulsing or a grabbing sensation that...

Read more...

Inside Import Car Collision Warning, Automatic Braking Systems

Anything that moves under its own power also has to stop, so brakes have been a safety feature on cars since day one. Over the years, technical innovations such as antilock brakes (ABS) have ­improved the ability to stop with minimal skidding on...

Read more...

Intermittent Engine Misfire Analysis

Even for an experienced diagnostic technician, ­attempting to diagnose an intermittent misfire ­condition that occurs only under specific driving conditions can be a frustrating exercise. Let’s begin by getting the basics out of the way. As we know,...

Read more...

Honda: Easy Fix for Engine Noise

We often encounter engines that have a cold-start knock or ticking noise. In this case, the 3.5-L V6 engines installed in various Honda models can make a knocking or ticking noise at idle and only when warm. The cause of the problem is that the rocker...

Read more...

Analyzing the Cylinder Pressure Waveform from a Running Engine, Part 3

By Vasyl Postolovskyi and Olle Gladso Contributing Writers and Instructors at Riverland Technical and Community College in Albert Lea, MN   In Part 1 of this Maximizing Tools series, we discussed an alternative approach to diagnosing an engine...

Read more...

Mac Tools Is Wrenching for a Cure

In support of Breast Cancer Awareness month, Mac Tools is featuring a variety of Wrenching For A Cure products available for purchase in the Flyer 11 through Nov. 2. Featured pink products include clothing, accessories, flashlights, pint glasses, and...

Read more...

5 Tool Storage Tips

  As a technician, you likely own thousands of dollars worth of tools and equipment, and require tool storage capacity to hold them all, along with carts and accessories to help move those tools around your work area. Here are a few items...

Read more...

Print Print Email Email

By Larry Carley
Technical Editor

The classic symptom of a wheel bearing that is failing is cyclic noise. Most often a bad bearing will produce a chirping sound or a growl that changes in proportion to vehicle speed.

If a bad bearing is suspected, the wheel bearings should be inspected to see if there is any play. On late-model vehicles with sealed wheel bearings or bearing cartridges, there should usually be little or no play.

To check a wheel bearing, grasp the tire at the 12 and 6 o’clock positions and attempt to rock the tire. If any play can be felt, the bearings are loose and need to be replaced.

Also, rotate the tire by hand. Any roughness or noise from the bearings would also tell you the bearings are worn or damaged and need to be replaced.

Bearing play can be measured by placing a dial indicator against the hub and turning the wheel. Refer to the vehicle manufacturers specifications, but as a rule no more than .005 inches of play is allowed for most sealed wheel bearing and hub assemblies.

If one wheel bearing is loose or noisy, pay close attention to all of the other hubs on the vehicle, too, especially if the vehicle has a lot of miles on it or has been driven through axle deep water or been flooded. Chances are some of the other wheel bearings may also need to be replaced.

Customers should be warned not to put off replacing a noisy or loose wheel bearing. A bearing failure can often cause the wheel (or rear axle in the case of a rear axle bearing) to separate from the vehicle. This would cause a loss of steering control that might have potentially deadly consequences!

The following two tabs change content below.
Latest articles from our other sites:

Chemical Gasketing: Cleaning the Surface

Service technicians can now use chemical gaskets where OEs had originally used formed-in-place or pre-cut gaskets during vehicle assembly. In addition to complying with OE specs, chemical gaskets are...More

Toughest Spark Plug Changes

We have all been there before: scratched arms, busted knuckles and an aching back caused by a difficult spark plug replacement job. If you think they are getting tougher every year, you are right. Every...More

Why Alignment Angles Change

An alignment angle doesn’t change randomly. There is a cause-and-effect relationship between external and ­internal forces that can alter the geometry of a vehicle’s suspension. Having the alignment...More

Domestic TPMS Guide

Chrysler TPMS Chrysler uses a Schrader Electronics or VDO TPMS system on just about every late-model vehicle. Chrysler has never used a band sensor in any of its platforms. On some 2004 and 2005 models,...More

Inside Import Car Collision Warning, Automatic Braking Systems

Anything that moves under its own power also has to stop, so brakes have been a safety feature on cars since day one. Over the years, technical innovations such as antilock brakes (ABS) have ­improved...More

Hyundai: Power Steering Oil Pump Whine

Before replacing a power steering oil pump for a whine noise condition, check the oil pump reservoir filter screen for contamination. If the filter screen at the bottom of the oil pump reservoir is clogged,...More

New Snap-on Heavy Duty Catalog Offers Array Of Performance-Enhancing Tools And Equipment

The new Snap-on Heavy Duty Catalog showcases some of the most innovative tools and equipment around, including an assortment of hand tools, power tools, shop and tech equipment, tool storage units, mobile...More

Analyzing the Cylinder Pressure Waveform from a Running Engine, Part 3

By Vasyl Postolovskyi and Olle Gladso Contributing Writers and Instructors at Riverland Technical and Community College in Albert Lea, MN   In Part 1 of this Maximizing Tools series, we discussed...More