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Air Filter Show & Tell: Seeing Is Believing

Air filters are normal wear items that ­require regular checks and ­replacement. Their role is to trap dirt particles that can cause damage to engine cylinders, walls, pistons and piston rings. In fuel-injected vehicles, the air filter also plays...

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Searching for 'Black Holes': Job Totals Reveal Missed Selling Opportunities

The concept for Maintenance Chronicle is simple: We ask one shop to record their maintenance sales for a two-week period, and then we see what we learn from the results. This edition of Maintenance Chronicle also proved to be valuable for the shop we...

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Selling Batteries With a State of Health Strategy

Batteries can be an easy sell in some ways ­because all customers ­understand the basic importance of the battery. Good battery = car starts; bad battery = car doesn’t start. Unfortunately, many customers aren’t in the market for that new battery...

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Saab: Fuel Sending Unit Replacement

The 2006 Saab 9-3 Sport sedan came in on the hook and the tow truck driver said, “I think it needs a fuel pump.” The gas gauge was reading less than a quarter of a tank and the low fuel warning light wasn’t on, so a quick fuel pressure check was...

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KIA: Brake Light On, Tachometer And Speedometer Inoperative

Applicable Models: 2001 Kia Optima LX, 2.4L Complaint The customer states the red brake light is illuminated on the instrument cluster. The ­customer also states the tachometer and speedometer intermittently stop working. Cause Confirmed the customer’s...

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Mazda: Fuel System Servicing Precaution

Applicable Models: 2004-’07 Mazda3 2005-’07 Mazda6 2006-’07 MX-5 vehicles During service/removal of fuel system parts on the above vehicles, the memory of the malfunctions and the long-term fuel trim need to be cleared by either removing the...

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Ford: ABS Light On With DTCs C1175, C1236, P0500 or P0503

Model: 2005-’07 Super Duty Some 2005-‘07 Ford Super Duty vehicles may exhibit an ABS light on and possible diagnostic trouble codes (DTCs) C1175, C1236, P0500 and/or P0503. This condition may be due to faulty vehicle wiring, a failed wheel speed...

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Composite Rotors Are Back

Veteran technicians will remember the problems with composite rotors in the late 1990s. These rotors had hats of stamped steel cast into the iron rotor. They saved weight, but they were prone to runout and installation errors. These types of rotors...

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Power Steering Dynamics and Diagnostics

Twenty-five years ago, when the power steering failed, diagnosing the system was easy. The most difficult problem to diagnose was the “morning sickness” that plagued some ­vehicles when they were cold. Today, the introduction of speed sensitive steering,...

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Pulling Codes: Multiple Misfire Personalities

A Story of Codes P0302, 04, 06, 08 & 03   This month’s diagnostic journey begins with a 2008 Land Rover Discovery that is taken in to a local testing facility for an emission test and fails due to a series of misfire codes. Misfire...

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Using Volumetric Efficiency to Determine the Health of an Engine

Measuring voumetric efficiency can diagnose problems like blocked catalytic converters, bad MAF sensors or vacuum leaks. Glen Beanard show you how to do it with a scan tool. For the complete article, click here.  ...

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Phoenix Systems Sends Facebook Giveaway Winner to Meet Larry McReynolds for All-Star Race

Phoenix Systems, maker BrakeShot, BrakeStrip and Reverse Brake & Clutch Bleeders, announced the winner of its 2015 Win Race Tickets Facebook Giveaway. Suzanne Cleary Drews from Edgewater, FL, is this year's grand-prize winner. Phoenix Systems will...

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Home Cooling How Long Should a Brake Job Last?

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Every technician knows it’s impossible to estimate how long a set of brake pads will last. But, due to changing ownership cycles, your customers are developing new expectations.
 
According to R.L. Polk, the typical consumer held onto a vehicle for 57 months in 2012. This is up from 38 months in 2002. So, if a customer drives 15,000 miles a year, the customer will accumulate 23,000 more miles before they trade it in. These extra miles could mean an extra front brake job. These repair incidents create points of reference that form certain customer expectations that were not there just a decade ago.
 
But, in some cases, reality may not meet customer expectations. Why? Each time the brakes are serviced, the pads could be compromised by the previous brake jobs that did not restore the brakes to like-new condition.
 
The brake hardware might not have been ­replaced during the first brake job. Halfway through the customer-expected life of the pads, the abutment clips may have corroded and lost their spring. The guide pins could have been neglected on the next brake job. Now, the pads wear really unevenly and the customer will notice that mileage between pad changes has significantly dropped. Performing a complete brake job will break the cycle.
 
A normal customer-expected wear interval cannot be achieved if a low-quality brake pad set is used. One area that is consistently compromised is the quality of the backing plate and how it r­etains the friction material during the life of the brake job.
 
Keeping a friction material attached to a piece of metal under more than 1,400 psi and shearing forces is not something to take for granted when selecting a replacement brake pad. If the attachment method and implementation is substandard, it can result in noise and, eventually, failure of the pad before it’s worn.
 
This is called edge lift or delamination. It’s caused by failure of the attachment method and can be hastened by corrosion. The first symptom of the failure is noise. The noise is a result of the separation, causing ­irregularities in the braking surface and the pad now having completely ­different NVH properties.
 
Some manufacturers are using mechanical ­attachment methods that can prevent delamination in a brake pad. The technology allows brake pads to be run down to the last few millimeters of friction material. The bond can be resistant to shear loads, corrosion and heat. This makes for a pad that can meet or exceed a customer’s expectations.

In a recent survey of technicians and shops ­conducted by Brake & Front End magazine, noise was the primary reason why a customer brought their ­vehicle in to have the brakes inspected. They did not bring it in for a low-priced brake job. Customers are concerned about safety, not a low price. They can see the value in getting more miles out of a complete brake job, over a cheap brake job that has them returning to you sooner than expected.  
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Andrew Markel

Andrew Markel

Andrew Markel is the editor of Brake & Front End and Servicio Automotriz magazines. He has been with Babcox Media for more than 12 years. He is a technician and former service writer and holds several automotive certifications from ASE and ­aftermarket manufacturers. He can be reached at amarkel@babcox.com.
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