The Ultimate Answer?: Brake NVH: Part One
In recent years, North American OEMs have had to spend more than $100 million annually at the dealership level to resolve brake noise issues. Also, JD Powers studies indicate brake noise is the third highest complaint identified by new-car buyers in the first 90-days of ownership. Brake noise on the aftermarket level is even more
Caliper Science Friction
Disc brake calipers come in many sizes and configurations, including fixed-caliper, multi-piston designs, and the more modern floating-caliper, single piston designs that may also contain a mechanically actuated parking brake. Needless to say, disc brake calipers have undergone a series of design changes that continue to make them more adaptable to late-model vehicle applications. To
Universal Coolants: The Ultimate Answer?
For nearly a decade, vehicle manufacturers have been introducing and using a variety of extended-life coolants. The only thing these coolants have in common is that they all seem to differ in formulation and color. There are orange coolants, green coolants, blue coolants, red coolants, yellow coolants, even pink ones. The proliferation of different coolant
Drum Brakes, Understanding The Hydraulic Side
The wheel cylinder supplies the muscle for a drum brake. Most wheel cylinders are relatively simple: a pair of horizontally opposed pistons mounted inside a cast iron or aluminum housing. A brake line or hose from the master cylinder routes hydraulic pressure to the wheel cylinder, which pushes the pistons out. This forces the brake
Disc Brake Calipers
Disc brake calipers come in many sizes and configurations, including fixed-caliper, multi-piston designs, and the more modern floating-caliper, single piston designs that may also contain a mechanically actuated parking brake. Needless to say, disc brake calipers have undergone a series of design changes that continue to make them more adaptable to late-model import vehicle applications.
Temperature Control Essentials: Pinpointing the Causes of Cooling System Failures
Managing heat is definitely a hot job these days. The cooling systems in most late-model import passenger cars have been downsized to reduce weight and bulk. At the same time, most new cars and trucks are now factory equipped with air conditioning, which puts an added strain on the cooling system’s ability to manage heat.
Loaded Brake Calipers: Can They Boost Productivity?
Some technicians like loaded calipers because everything they need comes in one box. They don’t have to worry about mismatched parts from different suppliers and the complete assemblies are quick and easy to install. Most importantly, they see fewer comebacks because of brake noise or other problems. Loaded calipers do provide a variety of benefits
Bleed and Flush Pointers
es overlap on the same job. Bleeding the system is done to remove all air from the hydraulic system, while flushing is performed to replace the fluid. More and more shops are performing a variety of fluid flush services as a method of increasing shop income. Generally, shops purchase a specialized flush machine for each
ABS Bleeding Service Pointers Help Complete the Job Right the First Time
Honda Honda has a well-deserved reputation for overall vehicle reliability, which extends to the ABS system. For the most part, bleeding the system will present no unusual problems. Caution: A word of warning when working around the accumulator and modulator assembly. The brake fluid is under thousands of pounds of pressure (3,625-5,075 psi). Be sure
Replacing FWD Wheel Bearings
When a wheel bearing goes out on a FWD car or minivan, it may or may not give much warning. Typical clues include noise from the vicinity of the wheel, possibly some steering wander or looseness in the steering, and/or some abnormal tread wear on the front tires. Also, an ABS light could illuminate. Any
Basic Brake Hydraulics: Classic Symptoms of a Failing Master Cylinder
Anyone who works on brakes should be familiar with basic hydraulics and the various components that make up the hydraulic portion of the brake system. So if you’re not as familiar with this subject as you should be, keep reading and we’ll refresh your memory. We’ll start at the heart of the system, which is
Brake Hardware: Lessons Learned From a Little Piece of Wire
Every technician has struggled with those little wire clips that push the pads onto the pistons on first-generation Mazda Miatas. Those little clips that barely fit into the painted-over holes on the new pads and can shoot across the shop like a rubber band can make a big difference. One racecar builder who specializes building