Gene Markel, Author at UnderhoodService - Page 4 of 4
Steering Stabilizers: Suspension Geometry

Big rims or tires can look good and give a vehicle a unique look. But what is invisible becomes real ugly is the alignment and suspension angles that become altered. Also, that extra weight in stylist alloy rims or thick off-road tires can create a gyroscopic problem. Lifting Why do people lift trucks? The primary

Inspection by the Numbers

As the saying goes: “The devil is in the details”. Another saying is: “The truth is in the numbers.” When performing a brake inspection, both are true. Replacing the calipers and rotors with every brake job may not be the cure all for ending all for fundamental brake repair problems. An inspection of every component,

Under Pressure and Pounding: What Happens to Wheel Bearings and Suspensions When Wheels Get Big?…Stop Using Percentages if You Cannot Show Your Work!

Custom wheels and tires have been an automotive fashion statement since the 1970’s and today custom wheels have become automotive jewelry with 26-inch spinners on a Hummer as one of the ultimate statements. But, the hidden costs come at the price of wheel bearing life and other wheel end components. As an undercar shop, you

Chassis Dynamics

A Firestone sales jingle gave us a good definition of chassis dynamics: “Where the rubber meets the road.” There are four tire tread contact patches that support the weight and control the motion of a vehicle. There are a lot of terms used to describe the motion of an automotive chassis and how it affects

Power Steering Repair

A long time ago in a garage far away a young technician was seeking a repair of a steering system. He found there are a lot of things that can go wrong with a rack and pinion steering gear. The steering wheel vibrates at speeds above 45 miles per hour; the steering wheel doesn’t return

This is a Great Time for the Brake Industry

As the editor of BRAKE & FRONT END, I make it a point to try out as many friction materials as possible. I have tried $20 pads, and expensive performance pads that can cost as much as $180 a set. I fint it amazing what a great set of brake pads or shoes can do

Medium-Duty Truck Clutch Repair

What is a medium-duty truck? The industry defines it as a vehicle with a Gross Vehicle Weight of 14,000 to 26,000 lbs. At 14,000 lbs., most heavy-duty one-ton trucks qualify as a medium duty vehicle. In light- and medium-duty trucks, the automatic transmission is ever increasing in popularity and numbers. So why am I talking

Viewpoint: Criminal Inspection

I often work on co-worker’s cars in the BRAKE & FRONT END company garage. Some of the pictures that you see in this magazine are taken while I am working on their cars. Usually, beer and a home-cooked meal are all that I ask for in return for my work. But, a recent case in