The Mechanics Insight 586 Poplar St. Clio, Michigan 48420
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Brakes
As we all know brakes are the one component that we can not live without, everybody needs them. Brake service can be abused if you are not aware. Brakes on sale for $38.95 is often the key to get you in the door, this is not how most garages and technicians work but some do. Brakes are often in need of service, so watch out for the upsell on this service. Brakes are sold then the drums or rotors are worn, the calipers/wheel cylinders are leaking, brake hardware is bad, axle seals are leaking, all of these items are often associated with the "Brake specials", have the technician show the worn rotors/drums, have him show the leaking seal, caliper or wheel cylinder. The leaking seal or caliper/wheel cylinder will have moisture on just about all components near it.
All vehicle manufacturers give measurement specifications to determining the need for replacement of brake pads. Be informed and have the technician show you the measurement of the pads/shoes on your vehicle. GM® and Ford® both use 1/32" (0.794mm) for there specification on brake pads and shoes. The Brake pads and Shoes should always be replaced in axle sets.Brake Pads/Shoes
Drums and Rotors
The technician uses a drum guage, and micrometer to measure the Drums and rotors of the vehicles they service. The measurements are published by many sources.
The actual "Turning" or "Truing" of drums and rotors is actually frowned on by GM® unless there are surface faults like scoring, pitting, or out of roundness.
Calipers
If a brake pull is experienced have the condition looked at, it is possible that an alignment problem can create a brake pull, and note when you are braking whether you are on a crowned road surface as this effect is a normal condition. If the conditions still persist the caliper can be attributed to the cause. Worn or loose caliper mounting bolts or other attaching components can cause a brake pull, corroded bushings and steering knuckle sliding surfaces will also be a factor. Your technician should already be aware of this and take appropiate action to remove the corosion/debris as necessary, but usually replacing the caliper is not the answer.
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YOU ARE THEDisclaimer: the views displayed in this newsletter are my personal views and opinions, along with the diagnosis. Consult your technician before proceeding, or have your Technician perform the repairs.
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