100-04-48 Noise, Vibration and Harshness 100-04-48
DIAGNOSIS AND TESTING (CONTINUED)
E859 EN 02/2001 2002 Bantam
CONDITIONS
DETAILS/RESULTS/ACTIONS
E6: BALANCE THE WHEELS AFTER CHECKING THE MOUNT ON THE WHEEL
1 Balance the tires after checking the mount on
the wheel.
- Check and balance the wheels.
- Road test.
• Is the vibration eliminated?
Yes
Condition corrected.
No
In some cases a vibration concern may be
caused by the tyre internal construction
inducing force variations, which cannot be
detected through run out measurement.
This condition is diagnosed by installing
tyre/wheel assemblies (one at a time) from a
different vehicle to isolate the offending
tyre(s). INSTALL new tires as necessary.
BALANCE tires. TEST the system for
normal operation.
PINPOINT TEST F: FRONT DISC BRAKES – VIBRATION/SHUDDER
CONDITIONS
DETAILS/RESULTS/ACTIONS
F1: ROAD TEST
1 Road test.
- With standard wheels and tires installed, road
test the vehicle and verify the condition.
• Is brake shudder/vibration or brake chirp
present when the brakes are applied?
Yes
GO TO F2
No
GO to Pinpoint Test G.
F2: APPLY THE PARKING BRAKE
1 Apply the parking brake.
- Lightly apply the parking brake and road test
the vehicle. (Release the parking brake
immediately after test).
• Is a shudder or vibration present?
Yes
CHECK the rear brakes.
REFER to Section
206-02A / 206-02B. GO TO F5
No
CHECK the front brakes.
REFER to Section
206-03. GO TO F3
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