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PARKING BRAKE DIAGNOSIS TSB Revision PARKING BRAKES 36-3 SYMPTOM PROCEDURES Inspection Procedure 1: Brake drag DIAGNOSIS STEP 1. Check the incomplete release of parking Q: Is there a fault? YES : Correct it. Then go to Step 5. NO : Go to step 2. STEP 2. Check the incorrect parking break Q: Is there a fault? YES : Adjust it. Then go to Step 5. NO : Go to Step 3. STEP 3. Check the parking break cable routing Q: Is there a fault? YES : Correct it. Then go to Step 5. NO : Go to Step 4. STEP 4. Check the rear brake's shoe and lining. Q: Is there a fault? YES : Correct it. Then go to Step 5. NO : Go to Step 5. STEP 5. Check symptom. Q: Is the malfunction eliminated? YES : Diagnosis is complete. NO : Recheck from Step 1. Inspection Procedure 2: Insufficient parking brake function DIAGNOSIS STEP 1. Check the excessive parking brake lever Q: Is there a fault? YES : Adjust the parking brake lever stroke or check the parking brake cable routing. Then NO : Go to Step 2. STEP 2. Check the parking brake cable sticking. Q: Is there a fault? YES : Replace it. Then go to Step 7. NO : Go to Step 3. STEP 3. Check the worn brake lining. Q: Is there a fault? YES : Replace it. Then go to Step 7. NO : Go to Step 4. STEP 4. Check the grease or oil on lining surface. Q: Is there a fault? YES : Replace it. Then go to Step 7. NO : Go to Step 5 (Vehicles with drum brake). Go STEP 5. Check the stuck wheel cylinder. Q: Is there a fault? YES : Replace it. Then go to Step 7. NO : Go to Step 6. STEP 6. Check the auto adjuster malfunction. Q: Is there a fault? YES : Replace it. Then go to Step 7. NO : Go to Step 7. STEP 7. Check symptom. Q: Is the malfunction eliminated? YES : Diagnosis is complete. NO : Recheck from Step 1. |