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SERVICE PROCEDURE 1. Verify the condition by road testing the vehicle with the customer. 2. Determine the specific brake issue based on the description in the Service Information above. 3. Follow the appropriate repair procedure(s), listed on the following pages, for your specific issue BRAKE NOISE • Brakes can make a range of noises when applied or released. Some noises are normal and no repair action should be taken. • Use the following descriptions to identify the specific type of brake noise and the appropriate repair: Squeak noise when the brakes are cold: • Usually occurs during the first few stops in the morning. • This is a normal condition. No service action is necessary Squeak noise with the brakes at normal operating temperatures: • listed under Brake Service on page 5 of this bulletin and the appropriate Service Manual procedures. • Refer to technical bulletins specific to the model of vehicle regarding this issue. If there are no bulletins for the car you are working on, install OE type pads using the information Notes about brake pads and brake noise: Original Equipment (OE) brake pads are installed on all current Infiniti vehicles at the factory. The OE pads use a Non-asbesto • s Organic (NAO) compound. The NAO material provides state of the art resistance to squeal noise. • ervice parts and must be used if replacing brake pads under the terms of • ted under Brake Service on page 5 of this bulletin and the appropriate Service Manual Gro n s after coming to a stop: • It is a normal condition. No repair or service is necessary. Groan noise during stopping: • Usually caused by glazing of the rotor’s surface as a result of heavy or frequent braking. • Refer to technical bulletins specific to the model of vehicle regarding this issue. • Replace the brake pads, then resurface the rotors and finish them with sand paper. Refer to Brake Service on page 5 for additional detail. Single clunk noise from front suspension when applying the brakes: • The noise is a result of the brake pads shifting in the direction of rotor rotation when the brakes are applied. Can be duplicated by lightly touching the brake pedal. • • If the brake pedal is pushed hard, the noise is less likely to occur. Make sure the brake pads and pad hardware (shims, springs, clips, etc) are installed correctly. Refer to ASIST for vehicle specific brake service information. Refer to Brake Service on page 5 for additional detail. Mull e he engine is started: • st er models, the self check occurs the first aches 5 mph after the engine is started. ors or drums. • WARNING: Brake dust may be hazardous if inhaled. Refer to the Service Manual (ESM) for brake • n and lubrication of brake pads, CAUTION: Do not get grease on the brake pad friction surface. A • Brake Judder is caused by rotor thickness variation and/or rotor run out.
