Wipers/Washers - Windshield Wiper Blades Knock/Judder
LTB00085NAS229 Aug 2012
ISSUE 2 CHANGES ARE EXTENSIVE AND THEREFORE NOT HIGHLIGHTED
SECTION: 501-16
Windshield Wiper Blades Knock / Judder
AFFECTED VEHICLE RANGE
CONDITION SUMMARY:
Situation:
The windshield wipers may knock / judder when operated.
Cause:
This may be caused by the condition of the windshield wiper arm mounting or spindle.
NOTE:
Technical Bulletin LTB00074 should be referenced to ensure the root cause of any judder/noise is not due to a permanent set condition of the wiper blade.
NOTE:
The following conditions are NOT associated with this concern and are therefore not covered by this bulletin:
^ Parts damaged in car washes.
^ Bent levers or wiper blade structure.
^ Bent arm-pieces to modify the attack angle.
^ Damage of the wiping edge of the blade (torn or missing sections).
^ Damage to the wiper blade rubber due to contamination with fuel, solvents, or silicon-based products.
^ Contamination on the wiper blade which would prevent the blade from performing its function of clearing the screen of water. Examples are: fuel, wax, dirt, bird excrement, dead insects, and plant material.
Action:
In the event of a customer concern of the above, the cause should be diagnosed, and if relevant cause is found after carefully reviewing the notes above regarding other conditions / actions, the windshield wiper arm(s) should be replaced.
PARTS
TOOLS:
Refer to Workshop Manual for any required special tools
WARRANTY
DIAGNOSTIC PROCEDURE