Cartridge Wheel Bearing Service
Wheel bearing service on import front-wheel drive cars with cartridge-style wheel bearings can be a challenge if you don’t have the proper tools. The wheel bearings are pressed into the knuckle and are impossible to remove unless you have a hydraulic press or a puller designed to push the wheel bearings out of the hub.
Replacing Hubs with Wheel Speed Sensors
By Larry Carley, Technical Editor When engineers came up with the idea of putting the wheel speed sensor (WSS) and tone ring inside a sealed wheel bearing hub assembly, it seemed like a great idea. The sealed environment would help protect the sensor and make it less vulnerable to damage or contamination from the outside
Wheel Bearing Service Tips
rvice could come back in fashion on vehicles instead of just on boat trailers. Since serviceable wheel bearings are rare, they often fall victim to wives tales and urban legends. One of the most prevalent is the myth of spinning a bearing with compressed air. Proper service required the bearing cage and roller assembly not
Selling Services…Fitment Blues: Solving Aftermarket Wheel Problems
Aftermarket wheel installation requires much more than just placing the wheel on the hub and tightening the lug nuts. It involves a great deal of knowledge and expertise that, admittedly, very few people have. Here is just one scenario that may help you avoid or diagnose a problem. Case Study A customer complains that his
2006 Ford Explorer Pointers
Photo 2). Another change for the 4.6L in 2006 is that it no longer uses a knock sensor. Both, the 4.0L and the 4.6L use a PCM-controlled heated PCV valve. The PCV valve on the 4.0L SOHC engine is located in the back of the left valve cover, mounted horizontally, and is well hidden from
Selling Services: Wheel Bearing Hub Unit Q&A
Can I use an impact wrench to remove or install a wheel bearing hub unit?
GM ‘W Platform’
Preventive Maintenance and Undercar Service
Why Bearings Fail
When a bearing wears out, it is usually a case of inadequate lubrication, faulty installation or improper adjustment. For the repair to be successful, you must first determine why the previous bearing failed. For sealed hub units, examining the internal bearings and races is impossible. The most common failure pattern for bearings is for those
Selling Services: Understanding the Importance of Bearing Grease
n overheating and excess grease purging* (leaking). Overheating occurs because the heat generated cannot dissipate correctly, continually building until damage occurs. When a bearing overheats and pushes out the grease, the sealing lip can be damaged and “blown out” in the reverse direction. When the grease amount is low, a grease starvation condition may be
Service Guide: F-Series New Model 2004
A bold new look and some subtle changes probably best describe the 2004-and-up Ford F150. To the technician, it is the subtle changes that he or she needs to be aware of. Starting with the 2004 model year, Ford launched a new body style for the F150. The new body style truck is a new
Runout Report
Dial Indicator 101
Automatic 4WD Hub Replacement
Automatic hubs are used on many 4×4 trucks to disengage the front wheels when four-wheel drive is not needed. Disconnecting the front wheels reduces friction and may improve fuel economy as much as one mile per gallon depending on the vehicle. A one mpg difference may not sound like much, but with gas costing around