|
|
5C–6 POWER-ASSISTED BRAKE SYSTEM General Diagnosis Condition Possible cause Correction Brake Pull Tire inflation pressure is unequal. Adjust Front wheel alignment is incorrect. Adjust Unmatched tires on same axle. Tires with approx. the same amount Restricted brake pipes or hoses. Check for soft hoses and damaged Water or oil on the brake pads. Clean or replace. Brake pads hardened. Replace Brake pads worn excessively. Replace Brake rotor worn or scored. Grind or replace. Disc brake caliper malfunctioning. Clean or replace. Front hub bearing preload incorrect. Adjust or replace. Loose suspension parts. Check all suspension mountings. Loose calipers. Check and tighten the bolts to Brake Roughness or Chatter Excessive lateral runout. Check per instructions. If not within Parallelism not within specifications. Check per instructions. If not within Wheel bearings not adjusted. Adjust wheel bearings to correct Pad reversed (steel against iron). Replace the brake pad and machine Excessive Pedal Effort Malfunctioning vacuum booster. Check the vacuum booster Partial system failure. Check the front and rear brake Excessively worn pad. Check and replace pads in sets. Piston in caliper stuck or sluggish. Remove caliper and rebuild. Fading brakes due to incorrect pad. Remove and replace with original equipment pad or equivalent. Vacuum leak to vacuum booster. Check for ruptured or loose hose. Check the direction of check valve Correct vacuum hose direction. Grease on the brake pads. Replace or clean. |