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BASIC BRAKE SYSTEM DIAGNOSIS TSB Revision BASIC BRAKE SYSTEM 35A-7 INSPECTION PROCEDURE 2: Insufficient braking power DIAGNOSIS STEP 1. Check whether the brake fluid is low, is the correct Q: Is there fault? YES : Refill or replace with the specified brake fluid DOT 3 or DOT 4. Bleed the brakes if necessary (Refer to NO : Go to Step 2. STEP 2. Check for spongy (not firm brakes). several times to deplete booster vacuum reserve. (2) With the brake pedal fully released, depress the brake pedal slowly until it stops. (3) With a measuring stick (ruler, etc.) next to the brake pedal, depress the pedal firmly and measure the distance the Q: Is the distance greater than 20 mm (0.8 inch)? YES : Bleed the brakes to remove air in the fluid (Refer to NO : Go to Step 3. STEP 3. Check the lining and brake drum contact. lining against the drum inner surface. NOTE: Clean off chalk after check. Q: Does the lining wipe off or smudge the chalk across the full width of the lining? sides. Go to Step 9. STEP 4. Check the auto adjuster function. . Q: Is there fault? YES : Repair it. Then go to Step 9. STEP 5. Check the brake booster function. . Q: Is there fault? YES : Replace the part. Then go to Step 9. AC000856 |