ISSUE Some 2009-2010 F-150 vehicles may exhibit shudder/vibration on moderate to hard acceleration.

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 is risk that a vibration may occur with the vehicle unloaded.
^ Verify suspension is not modified from the original configuration. Aftermarket leveling kits and rear leaf spring shackle kits change ride height which affects pinion angle and other critical driveline related operating angles. Vehicle must be at original specifications before accurate evaluation and diagnosis can be performed.
NOTE FOR 2 PIECE DRIVESHAFT EQUIPPED VEHICLES IT MAY BE NECESSARY TO ORDER THE CENTER BEARING SHIM(S) (3 MAXIMUM) AND BOLTS.
NOTE HEAVY DUTY REAR AXLES HAVE 7 LUG NUTS.
Parts Block
2010 Ford Truck F 150 4WD V8-4.6L VIN 8        81
WARRANTY STATUS: Eligible Under Provisions Of New Vehicle Limited Warranty Coverage IMPORTANT: Warranty coverage limits/policies are not altered by a TSB. Warranty coverage limits are determined by the identified causal part.
OPERATION DESCRIPTION TIME
092212A 2009-2010 F-150: Road 2.7 Hrs. Test, Install Wedge, Road Test, Install Wedge, Road Test (Covers Procedure A B, C, Or D) (Do Not Use With Any Other Labor Operations)
0922i2B 2009-2010 F-150: Road 3.2 Hrs. Test, Install Wedge, Road Test, Lower Center Bearing By Adding 1/4 Inch Shims (Install Shim, Road Test, Install Shim, Road Test, Install Shim Road Test (Covers Procedure C/C1, D/D1 (Do Not Use With Any Other Labor Operations)
092212C 2009-2010 F-150: Road 3.2 Hrs. Test, Adjust The Center Bearing By Installing 2 Shims, Road Test, Remove Shim, Road Test, Remove Shim, Road Test, Install Wedge, Road Test (Covers Procedure E) (Do Not Use With Any Other Labor Operations)
DEALER CODING
CONDITION BASIC PART NO. CODE 5793 42