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Disc brakes are not “self-energizing” like drum brakes, so they require more pedal effort to apply. It’s the magic of power brakes that allows a 98-lb. little old lady to bring two tons of Lincoln Town Car to a screeching halt with little more than a light caress of her foot against the brake pedal.

Selecting the Right Friction Material

How do you select the right brake pad for a vehicle? And, how do you select the right friction line to stock at your shop or have as your first call? These are difficult questions to answer. Every time your shop installs a set of brake pads on a vehicle you are taking a gamble

Twin-Piston Calipers: Are Two Pistons Better than One?

generate more torque. More torque means more stopping power. Also, by using the floating caliper design instead of an opposing piston design, engineers are able to avoid wheel clearance issues and other robust design features of the floating caliper. With a single-piston caliper, the footprint of pad is limited in some ways to the diameter

Tech Tip: Eliminating Toyota Air Conditioning Evaporator Odor

A musty odor may be emitted from the air conditioning system of some vehicles that are usually operated in areas with high temperature and humidity. It’s most noticeable when the air conditioner is first turned on after the vehicle has been parked for several hours.

Tech Update: A Refresher Course on Complete Brake Service, Brake & Suspension System Service

Whether you’re studying for an upcoming ASE brake certification test, expanding your knowledge or honing your brake repair skills, this course is for you. There are no grades and no pop quizzes or tests. It’s not even a pass-fail course. The only credit you’ll receive will be thanks and appreciation from your customers and employer

Wheel, Rotor and Drum Removal

The traffic whizzed by at seventy plus. The good news: The flat is on the rear passenger side and the lug nuts came off with little strain. The bad news: The alloy wheel is seized on the hub and it isn’t going anywhere. Twist of fate: I forgot to chock the front wheel and the

Master Cylinder Inspection

Although the mechanics of modern master cylinders seem deceptively simple, today’s dual-piston or tandem master cylinders still require the utmost in care and attention to maintain safe, reliable operation. The tandem master cylinder contains two piston assemblies; one for each axle set or diagonally located pair of brakes. Each piston assembly has two lip seals

Coolant Service

It’s Getting Hotter Out There; Know How to Keep Your Customers Cool Coolant testers, pressure testers, flushers and exchangers. These are the tools and equipment shops need to keep their customers’ cooling systems cool. We’ve had an unusually hot summer this year. Record high temperatures across the country have left many vehicles steaming alongside the

Brake Fluid Testing, Bleeding & Flushing

Brake fluid is something that should always be changed when the brakes are relined or when replacing a caliper, wheel cylinder, brake line, hose or master cylinder. But what about other times? Should brake fluid be replaced for preventive maintenance? Most brake experts say yes! DOT 3 and DOT 4 brake fluid contains glycol ethers

Brake Fade

Brake fade is something nobody wants to experience. When you step down on the brake pedal with a certain amount of force, the vehicle should slow predictably. But when the brakes get too hot and start to fade, it takes more and more pedal effort to get the same amount of braking force. Eventually the

Brake FLuid Testing: Are You Testing Your Customers’ Brake Fluid?

When was the last time you tested a customer’s brake fluid? Never? Many shops don’t bother to test brake fluid for several reasons. Some don’t think fluid tests are necessary. Others don’t test the fluid because they don’t have anything to test it with. And others say why bother if they’re going to bleed the

Tech Tip: Motor Mounts – Supporting the Engine and Transmission

Motor mounts are not a very glamorous product, but they do have an important function: They support the engine and transmission, and dampen noise and vibration. The mounts isolate the engine and transmission from the chassis so vibrations and noise are not transmitted to the rest of the vehicle.