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How To Replace Brake Pads
Copyright AA1Car
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Replacing a set of brake pads is a common brake repair procedure. But if not done correctly, it can cause problems. Brake systems are very sensitive to rust and corrosion and should receive a thorough cleaning when new pads are installed. Residual rust or corrosion left in critical areas can cause brake issues almost immediately.
The following brake pad installation tips are provided courtesy of Bendix:
Calipers. Areas that are subject to movement or retain components or hardware should be cleaned, along with the pin bores. Therefore, calipers need to be disassembled during pad replacement. Use a round wire brush and cleaner to remove old lubricant and corrosion. Use a fine polishing disc in a die grinder at a lower speed to clean the area. Avoid being too aggressive, especially with aluminum components, to ensure you only remove corrosion and not any metal. Be sure any areas on anti-rattle clips or hardware are free of debris as this can affect their performance over the life of the brake job.
Calipers on Ford 3/4 and 1-ton trucks have seen slides freeze shortly after brake service if they are not properly cleaned.
Pad Abutments. Whether they are part of the caliper bracket or steering knuckle, pad abutments need to be clean and smooth. If there are any notches or grooves caused by pad movement, these parts should be replaced. Damage like this can cause excessive pad movement that leads to noise and vibration.
Hub assemblies. Use a polishing pad to clean rust from the hub face. Then use an over-the-stud hub cleaner to get in next to the studs. Leaving corrosion in these areas is one of the top causes for pulsations after a brake job is completed.
Mounting Pads. One area that is often overlooked is the mounting pad on the hub that mates with the wheel. If there is rust or debris on this surface, it can lead to rotor distortion and pulsations just as easily as if it were left on the hub.
Rotors. New or machined rotors should be washed with soap, warm water and a stiff brush to remove metal particles from the surface. If this final step is not taken, brake noise may likely result. It can also prevent proper filming of the rotor which will keep the new parts from getting their expected mileage.
Bendix also recommends you clean the rear calipers and drum and parking brake systems. All these components should receive a good cleaning, inspection, lubrication and adjustment before the vehicle hits the road.
For more information and tech tips, visit www.bendixbrakes.com.
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