Step | Action | Value | 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. | ||||
1 | Did you review the General Description and perform the necessary inspections? | -- | Go to Step 2 | |
2 |
Important: Compare this vehicle to an identical vehicle in order to determine if the customer's concern is a normal operating characteristic of the vehicle. Attempt to duplicate the noise. Road test the vehicle. Is the front suspension noisy? | -- | Go to Step 3 | System OK |
3 |
Is the noise present? | -- | Go to Step 4 | Go to Step 5 |
4 |
Did you complete the repair? | -- | Go to Step 25 | -- |
5 |
Are any components damaged? | -- | Go to Step 6 | Go to Step 7 |
6 | Repair any damaged components. Did you complete the repair? | -- | Go to Step 25 | -- |
7 |
Does either tire exhibit unusual tread wear? | -- | Go to Step 8 | Go to Step 10 |
8 |
Is the noise now emitted from the rear of the vehicle? | -- | Go to Step 9 | Go to Step 10 |
9 | Replace the tires that are causing the noise. Did you complete the repair? | -- | Go to Step 25 | -- |
10 | Ensure that the ball joints and steering linkage are lubricated, if applicable. Lubricate/replace as necessary. Did you service any components? | -- | Go to Step 25 | Go to Step 11 |
11 | Ensure that all of the wheel nuts are tightened to the correct specification. Tighten as necessary. Did you tighten any wheel nuts? | 140 N·m (103 lb ft) | Go to Step 25 | Go to Step 12 |
12 | Use your hands in order to push and pull the strut. Is the strut loose? | -- | Go to Step 13 | Go to Step 15 |
13 |
Is the strut loose? | 85 N·m (63 lb ft) | Go to Step 14 | Go to Step 25 |
14 | Replace the loose or worn strut components. Refer to Strut, Strut Component, and Spring Replacement in Front Suspension. Did you complete the repair? | -- | Go to Step 25 | -- |
15 | Use your hands in order to push and pull on the stabilizer shaft. Is the stabilizer shaft loose? | -- | Go to Step 16 | Go to Step 20 |
16 |
Is the stabilizer shaft loose? | 85 N·m (63 lb ft) | Go to Step 17 | Go to Step 25 |
17 | Observe the location of the stabilizer shaft looseness. Is the looseness observed at the stabilizer shaft links? | -- | Go to Step 18 | Go to Step 20 |
18 | Replace the stabilizer shaft links. Refer to Stabilizer Shaft Link Replacement in Front Suspension. Did you complete the repair? | -- | Go to Step 25 | -- |
19 | Replace the stabilizer shaft insulators and/or brackets. Refer to Stabilizer Shaft Insulator Replacement in Front Suspension. Did you complete the repair? | -- | Go to Step 25 | -- |
20 | Inspect the control arms for looseness or movement. Is any looseness or movement observed? | -- | Go to Step 21 | Go to Step 23 |
21 |
Is the control arm loose? | 113 N·m (83 lb ft) | Go to Step 22 | Go to Step 25 |
22 | Replace any worn or loose control arm bushings. Refer to Front Lower Control Arm Bushing Replacement in Front Suspension. Did you complete the repair? | Go to Step 25 | -- | |
23 |
Caution: Do not spin the drive wheels faster than 55 km/h (35 mph) as indicated by the speedometer. This limit is necessary because the speedometer indicates only one half of the actual wheel speed when one drive wheel is spinning and the other drive wheel is stopped. Personal injury and damage may result from high speed spinning. Important: This step will require the assistance of another person to maintain the drive train speed. Do not use the cruise control to maintain the drivetrain speed. Important: Do not allow the J 39570 Chassis Ear to contact any moving components. Does either wheel bearing exhibit noise? | Go to Step 24 | Go to Step 8 | |
24 | Replace the wheel bearings. Refer to Front Wheel Bearing and Hub Replacement in Front Suspension. Did you complete the repair? | Go to Step 25 | -- | |
25 | Operate the vehicle in order to verify the repair. Did you correct the condition? | System OK | Go to Step 3 | |
