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brake pedal feel as evidence of a brake concern. Check for brake warning indicator illumination and the brake fluid level in the brake fluid Normal Conditions The following conditions are considered normal and are not indications that the brake 1. 1. New brake systems are not designed to produce as hard a pedal effort as in the past. Complaints of light pedal efforts should be compared to pedal efforts of 2. 2. During normal operation of the brake master cylinder, the brake fluid level in the reservoir will rise during brake application and fall during release. The net brake 3. 3. A trace of brake fluid exists on the brake booster shell below the master cylinder mounting flange. This results from the normal lubricating action of the master 4. 4. Brake fluid level will fall with brake pad wear. Abnormal Conditions Changes in brake pedal feel or travel are indicators that something could be wrong in the 1. 1. Brake pedal goes down fast. This could be caused by an external or internal leak. 2. 2. Brake pedal eases down slowly. This could be caused by an external or internal leak. 3. 3. Brake pedal is low or feels spongy. This condition may be caused by no fluid in the brake master cylinder reservoir, brake fluid reservoir cap vent holes blocked or air 4. 4. Brake pedal effort is excessive. This may be caused by a bind or obstruction in pedal or linkage, blocked fluid control valve or insufficient brake booster vacuum. 5. 5. Rear brakes lock up during light pedal force. This may be caused by grease or fluid on brake pads, damaged brake pads and linings, incorrectly adjusted parking 6. 6. Brake pedal effort is erratic. This condition could be caused by the brake booster being in operative, extreme brake caliper piston knock back or incorrectly installed 7. 7. Brake warning indicators is always ON. This may be caused by low fluid level, ignition wire routing too close to the fluid level indicator, or float assembly damage. Bypass Condition Test 1. 1. Check the brake fluid level in the brake fluid reservoir. Fill the brake fluid reservoir |