Road Test
Road TestIf a road test is performed, select a road that is reasonably smooth and level. Gravel or bumpy roads are not suitable because the surface does not allow the tires to grip the road equally. Avoid crowned roads.
A key factor in evaluating brake concerns is the deceleration rate. This varies from vehicle to vehicle and with changes in operating conditions. It is evident how well the brakes are working after just a few applications.
Avoid locking the brakes. Locked brakes are not an indication of braking efficiency.
Visual Inspection Chart
For low or spongy brake pedal concerns:
^ check and, if necessary, refill the brake master cylinder reservoir.
^ bleed the brake system and retest the brake pedal feel.
^ if the brake pedal is still low or feels spongy, check the brake pedal mounting for looseness and correct installation. Check the power brake booster and the brake master cylinder for loose mounting. Correct as necessary and retest the system for normal operation.
For a slow or incomplete brake pedal return concern:
^ inspect for binding, damage, correct installation or interference at the brake pedal.
^ check the power brake booster for binding, damage and correct installation.
For excessive or erratic brake pedal travel concerns:
^ Check for spongy pedal and bleed as necessary.
^ Check the brake pedal mounting for wear, damage, binding and correct installation.
^ Check the disc brake caliper components for wear, damage, binding and correct installation.
^ Check the power brake booster, and brake master cylinder for damage and correct installation.
^ Check wheel bearings and rear axle end play. Correct as necessary.