Special Tools
CH-39570 Chassis Ear
Equivalent regional tools: Special Tools
| Step |
Action |
Yes |
No |
| DEFINITION: Any noise emitted from the front of the vehicle that is induced by VEHICLE SPEED or DRIVING TERRAIN as related to the front suspension. |
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| 1 |
Did you review the General Description and perform the necessary inspections? |
Go to Step 2 |
Go to Symptoms - Suspension General Diagnosis |
| 2 |
Attempt to duplicate the condition. Road test the vehicle. Did you duplicate the condition? |
Go to Step 3 |
System OK |
| 3 |
Is the noise reactive to vehicle load or speed? |
Go to Step 4 |
Go to Step 7 |
| 4 |
Inspect the tires for the following conditions: Proper tire inflation, adjust as necessary. Vehicle Certification, Tire Placard, and Anti- Theft Label Unusual tire wear. Vibration Analysis - Tire and Wheel Inspect the wheel nuts for looseness and tighten as necessary. Fastener Specifications Did you find and correct the condition? |
Go to Step 14 |
Go to Step 5 |
| 5 |
Inspect the front wheel bearings. Wheel Bearings Diagnosis Did you find and correct the condition? |
Go to Step 14 |
Go to Step 6 |
| 6 |
Inspect for front axle noises. Symptoms - Front Drive Axle Did you find and correct the condition? |
Go to Step 14 |
Go to Step 7 |
| 7 |
Bounce the front of the vehicle in order to duplicate the noise. Did you duplicate the noise? |
Go to Step 8 |
Go to Step 10 |
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Step |
Action |
Yes |
No |
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8 |
1. Raise and support the vehicle. Lifting and Jacking the Vehicle 2. Inspect the front suspension components for looseness. Fastener Specifications 3. Inspect the front suspension components for damage and repair as necessary. Did you find and correct the condition? |
Go to Step 14 |
Go to Step 9 |
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9 |
Inspect the ball joints and steering components for the following conditions: Lack of lubrication, where applicable. Looseness in the ball joints. Symptoms - Suspension General Diagnosis Looseness in the steering linkage. Steering Linkage Inspection Did you find and correct the condition? |
Go to Step 14 |
Go to Step 10 |
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10 |
1. Install the CH-39570 Chassis Ear or equivalent. 2. Bounce the front of the vehicle, using the CH- 39570 Chassis Ear or equivalent in order to locate the source of the noise. If necessary, road test the vehicle. 3. Repair or replace any damaged components, as necessary. Did you find and correct the condition? |
Go to Step 14 |
Go to Step 11 |
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11 |
Inspect for damaged shock absorbers. Suspension Strut and Shock Absorber Testing - On Vehicle Did you find and correct the condition? |
Go to Step 14 |
Go to Step 12 |
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12 |
Inspect the front stabilizer shaft and stabilizer shaft links for damage and repair as necessary. Stabilizer Shaft Replacement Front Stabilizer Shaft Link Replacement Did you find and correct the condition? |
Go to Step 14 |
Go to Step 13 |
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13 |
Inspect for control arm damage and repair as necessary. Front Upper Control Arm Replacement - Left Side Front Upper Control Arm Replacement - Right Side |
Go to Step 14 |
Go to Step 10 |
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| Step |
Action |
Yes |
No |
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Front Lower Control Arm Replacement Did you find and correct the condition? |
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| 14 |
Operate the system in order to verify the repair. Did you correct the condition? |
System OK |
Go to Step 3 |