Steering/Suspension - Steering Wheel Oscillation
TSB 11-6-1406/24/11
4X4 - STEERING WHEEL OSCILLATION
FORD:
2011 F-250, F-350, F-450
ISSUE
Some 2011 F-Super Duty F-250, F-350 and F-450 vehicles equipped with 4X4 and built 2/5/2010 through 8/1/2010 may exhibit a steering wheel oscillation after hitting rough pavement or an expansion joint during a slight left turn at 80-89 Km/h (50-55 MPH).
ACTION
Refer to the Service Procedure to improve steering wheel oscillations.
SERVICE PROCEDURE
This Service Procedure will help minimize steering wheel oscillations on impacts, however, there may be some remaining minor oscillation which would be considered normal. If there are aftermarket modifications to the chassis, suspension, or steering systems, do not proceed with this article.
1. Check tire inflation and inflate tires to pressure indicated on the placard inside driver's door.
2. Remove existing steering damper. Refer to Workshop Manual (WSM), Section 211-03 exploded view.
3. Test the steering damper by compressing and extending it with the damper oriented so the tapered stud end is up and the bushing end is down. Constant resistance should be detected between compression and extension cycling. If the steering damper does not exhibit constant resistance between compression and extension cycles, replace the steering damper and torque bolt to 103 N.m (76 lb-ft).
4. If the steering damper exhibits constant resistance between compression and extension cycles, reinstall the original steering damper and torque bolt to 103 N.m (76 lb-ft) and proceed with normal diagnostics.
Parts Block
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
110614A 2011 F-Super Duty 4X4: 0.4 Hr.
Check And Adjust Tire
Pressure, And Replace
The Steering Damper (Do
Not Use With Any Other
Labor Operations)
DEALER CODING
CONDITION
BASIC PART NO. CODE
3E651 42
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