DisclaimerTechnical Service Bulletin # 09-22-12 Date: 091116 Drivetrain - Shudder On Hard Acceleration TSB 09-22-12 11/16/09 SHUDDER/VIBRATION ON MODERATE TO HARD ACCELERATION FORD: 2009-2010 F-150 ISSUE Some 2009-2010 F-150 vehicles may exhibit shudder/vibration on moderate to hard acceleration. ACTION Follow the Service Procedure steps to correct the condition. SERVICE PROCEDURE Adjust the rear axle pinion angle using the appropriate axle shim kit. Refer to the Instruction Sheet provided in the kit which provides installation procedures and Driveline Angle Corrections Chart. The concerns described in this article mainly occur only when the vehicle is loaded with cargo or towing a trailer. The following are key points when resolving the concern. ^ The vehicle must be evaluated in the state when the complaint occurs in order to verify the concern and validate a successful repair. ^ If pinion angle is being adjusted to compensate for a loaded or trailer tow condition, there ...
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