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POWER STEERING DIAGNOSIS TSB Revision POWER STEERING 37A-7 INSPECTION PROCEDURE 5: Squealing noise DIAGNOSIS STEP 1. Check the belt tension. − Drive Belts Q: Is the belt tension incorrect? YES : Adjust the belt tension. (Refer to GROUP 00, Maintenance Service − Drive Belts NO : Go to Step 2. STEP 2. Check for seizure in the oil pump. Q: Is there seizure? YES : Replace the part. Then go to Step 3. NO : Go to Step 3. STEP 3. Check symptoms. Q: Is there noise? YES : Repeat to Step 1. NO : Diagnosis is complete. INSPECTION PROCEDURE 6: Hissing noise DIAGNOSIS STEP 1. Check for entry of air. Q: Has air entered? YES : .) Then go to Step 4. NO : Go to Step 2. STEP 2. Check each hose for crushing or Q: Is there fault? YES : Repair or replace the hose. Then go to Step NO : Go to Step 3. STEP 3. Check the steering gear box for damage. Q: Is there damage? YES : Repair or replace the part. Then go to Step NO : Go to Step 4. STEP 4. Check symptoms. Q: Is there noise? YES : Repeat to Step 1. NO : Diagnosis is complete. INSPECTION PROCEDURE 7: Droning noise DIAGNOSIS STEP 1. Check the oil pump or oil pump bracket Q: Is the oil pump or oil pump bracket installation correct? Go to Step 2. NO : Repair it. Then go to Step 3. STEP 2. Check the oil pump for damage. Q: Is there damage? YES : Replace the oil pump. Then go to Step 3. NO : Go to Step 3. STEP 3. Check symptoms. Q: Is there noise? YES : Repeat to Step 1. NO : Diagnosis is complete. |