Envoy 2WD V8-5.3L (2007)
Brake Rotor/Disc: Procedures
Brake Pad and Rotor Burnishing
Brake Pad and Rotor Burnishing
Caution: Refer to Road Test Caution.
Burnishing the brake pads and brake rotors is necessary in order to ensure that the braking surfaces are properly prepared after service has been
performed on the disc brake system.
This procedure should be performed whenever the disc brake rotors have been refinished or replaced, and/or whenever the disc brake pads have been
replaced.
1. Select a smooth road with little or no traffic.
2. Accelerate the vehicle to 48 km/h (30 mph).
Important: Use care to avoid overheating the brakes while performing this step.
3. Using moderate to firm pressure, apply the brakes to bring the vehicle to a stop. Do not allow the brakes to lock.
4. Repeat steps 2 and 3 until approximately 20 stops have been completed. Allow sufficient cooling periods between stops in order to properly
burnish the brake pads and rotors.
Brake Rotor Refinishing
Brake Rotor Refinishing
Tools Required
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J 41013 Rotor Resurfacing Kit
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J 42450-A Wheel Hub Resurfacing Kit
Important: Do NOT refinish the brake rotors in order to correct any of the following complaints:
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Growl or squeal brake noise
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Premature brake lining wear
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Cosmetic or superficial corrosion of the rotor braking surface
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Rotor discoloration
Refinish the brake rotors ONLY when 1 or more of the following conditions exist:
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Groove depth in excess of specification
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Severe scoring of the rotor braking surface
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Brake pulsation caused by the following:
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Lateral runout in excess of specification
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Brake rotor thickness variation in excess of specification
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Corrosion or pitting that is deeper than the rotor braking surface
1. Use the J 42450-A in order to clean the wheel bearing/hub.
2. Use a micrometer in order to measure the thinnest point of the brake rotor. If the thinnest point of the brake rotor exceeds the brake rotor minimum
thickness, do NOT refinish the brake rotor. Replace the brake rotor.
3. Use the J 41013 in order to THOROUGHLY clean the rust from the brake rotor flange.
4. Refinish the brake rotor. Refer to the brake lathe manufacturer's operating instructions.
Important: Failure to obtain the best possible braking surface finish may cause the vehicle to stop with difficulty.
5. After machining the rotor, use 120 grit aluminum oxide sandpaper and a non-directional rotor finisher, if available, in order to create a
