INSPECTION PROCEDURE 6: Squealing, Groaning or Chattering Noise When Brakes are Applied: Diagnosis
- STEP 1. Check the brake drums and lining or brake disc and pads for wear or cutting.
Q: Is there wear or cutting?
YES : Repair or replace the part. Then go to Step 7.
NO: Go to Step 2.
- STEP 2. Check the calipers for rust.
Q: Is there rust?
YES : Remove the rust. Then go to Step 7.
NO: Go to Step 3.
- STEP 3. Check the lining parts for damage.
If equipped with rear disc brakes, go to Step 6.
Q: Is there damage?
YES : Repair or replace the part. Then go to Step 7.
NO: Go to Step 4.
- STEP 4. Check whether the lining is dirty or greasy.
Q: Is the lining dirty or greasy?
YES : Clean or replace the part. Then go to Step 7.
NO: Go to Step 5.
- STEP 5. Check whether the shoe hold-down springs are weak or the shoe-hold-down pins and springs are loose or damaged.
Q: Is there fault?
YES : Repair or replace the part. Then go to Step 7.
NO: Go to Step 6.
- STEP 6. Adjust the brake pedal or brake booster pushrod.
Refer to ON-VEHICLE SERVICE or MASTER CYLINDER ASSEMBLY AND BRAKE BOOSTER .
Q: Is the adjustment value come?
YES : Adjust. Then go to Step 7.
NO: Go to Step 7.
- STEP 7. Recheck symptom.
Q: Is the symptom eliminated?
YES : Diagnosis is complete.
NO: Start over at Step 1. If a new symptom surfaces, /refer to the symptom chart.