Fulltext TSBs

Technical Service Bulletins

TSB
05-22-1
  • STEERING WHEEL OSCILLATION
Publication Date: October 20, 2005

FORD:
2005-2006 F-Super Duty

This article supersedes TSB 4-26-01 to update the vehicle model years.

ISSUE:

Some 2005-2006 F-Super Duty vehicles may exhibit steering wheel oscillation (back and forth motion), immediately following front or rear wheel impacts (pavement joints, frost heaves, rough roads, etc.). Steering wheel motion is typically in the range of ± 5 degrees, and typically dampens out in fewer than five oscillations. This condition occurs mostly on 4×4 vehicles, and is more evident on trucks equipped with a gas engine.

ACTION:

Refer to the following Service Procedure to minimize the steering wheel oscillations on impacts, however, there may be some remaining minor oscillation which would be considered normal.

SERVICE PROCEDURE

Perform the following:

  • Vehicle Inspection
  • Evaluation Of Vehicle Prior To Repair
  • Steering Gear Mesh Load Adjustment
  • Front Alignment and Reduce Front Caster
  • Replacement Of Redundant Control Steering Wheel (if equipped and vehicle built prior to 10/8/2004)

VEHICLE INSPECTION

  1. Set tire pressures as indicated on the vehicle label (located on driver’s door label).

    NOTE:SETTING TIRE PRESSURE TO DOOR SPECIFICATION IS ONE OF THE SINGLE MOST IMPORTANT MEASURES IN RESOLVING THIS ISSUE. LOWERING TIRE PRESSURE WILL MAKE THIS ISSUE WORSE.

  2. Wipe down and inspect the steering damper. Turn the steering wheel from lock to lock several times to cycle the steering damper and inspect for leaks.
    1. If leaks are present, install a new steering damper and continue with this TSB.
    2. If no leaks are present, continue with this TSB.
  3. Check torques on the following steering and suspension fasteners and adjust to specification as required (see Table below).

    Torque Specification
    DescriptionLb-ftNm
    Damper nuts (4×2)5980
    Damper-to-bracket (F-250, F-350 4×4)2635
    Damper-to-drag link6791
    Drag link-to-pitman arm nut148201
    Inner tie-rod end nuts85115
    Outer tie-rod end nuts85115
    Track bar bracket-to-frame nuts and bolts129175
    Track bar-to-track bar bracket bolt406550
    Track bar-to-axle nut185250
    Radius arm to axle bolts222300
    Radius arm to bracket nut222300

    NOTE:ADJUSTING TORQUE ON STEERING AND SUSPENSION FASTENERS IS VERY IMPORTANT IN RESOLVING THIS ISSUE. FASTENERS THAT ARE IMPROPERLY TORQUED WILL MAKE THIS ISSUE WORSE.

EVALUATION OF VEHICLE PRIOR TO REPAIR

  1. Ask customer what type of road surface and speed generates the steering wheel oscillation.
  2. Road test vehicle on similar road surface and speed, to gain a feel for the severity of wheel oscillation.
  3. During the road test, evaluate and note the steering wheel return-ability.
    1. Turn steering wheel full lock to lock to confirm no binding.
    2. Locate center, and then 45 degrees either side of center on the steering wheel.
    3. Driving vehicle at 35 MPH (56 Km/h), on a dry and flat road surface, turn the wheel 45 degrees and release. Note the approximate angle that the steering wheel returns to BEFORE CLEAR VISION. Perform and record the angle for both left and right. It is normal if the angle differs slightly from left to right.

STEERING GEAR MESH LOAD ADJUSTMENT

  1. Insert hex wrench into steering gear mesh load adjuster screw.
  2. While holding the mesh load adjuster screw tight, back off lock nuts two (2) full turns to allow free movement of the adjuster screw.
  3. Carefully tighten adjuster screw until a slight increase in resistance is felt, then back off approximately 1/16th of a turn.
  4. Hold the adjuster screw in place and tighten lock nut. Do not allow the adjustment screw to turn while tightening the locking nut down.
  5. Road test vehicle and evaluate for improvement in steering wheel oscillations.
    1. Confirm that there is no objectionable increase in steering efforts, especially at low speeds.
    2. Verify that steering wheel return-ability is approximately the same as it was during the original evaluation (within 5 degrees).
    3. Turn steering wheel full lock to lock to confirm no binding.
  6. Park the vehicle to let it cool down. Road test cold to confirm acceptable parking efforts and return-ability in cold condition. Repeat the mesh load adjustment if needed.

FRONT WHEEL ALIGNMENT AND REDUCE FRONT CASTER

Measure wheel alignment. Verify that front caster, camber and total toe is within specification. Adjust as required. Refer to the Workshop Manual, Section 204-00 for complete alignment specifications.

REDUCE FRONT CASTER

  • Note the current front caster
  • Use alignment adjustment bushings to Reduce front caster by 0.5 to 0.75 degree. The caster setting may be at the lower end of the specification as long as the vehicle drives smoothly. Do not put caster setting below the lower specification limit. Use Alignment adjustment bushings.

F-250/350 4×4:

  • 5C3Z-3B440-CCC (0.5 degree bushing)
  • 5C3Z-3B440-DDD (0.75 degree bushing)
  • 5C3Z-3B440-EEE (1.0 degree bushing)

F-450/550 4×4 and 4×2:

  • 5C3Z-3B440-HHH (0.5 degree bushing)
  • 5C3Z-3B440-JJJ (0.75 degree bushing)
  • 5C3Z-3B440-KKK (1.0 degree bushing)

F-250/350 4×2:

  • 5C3Z-3B440-C (0.5 degree bushing)
  • 5C3Z-3B440-D (0.75 degree bushing)
  • 5C3Z-3B440-E (1.0 degree bushing)

For All 4×4 and for F-450/550 4×2

  • Rotate the alignment adjustment bushing so that the bushing hole is in the 45 degree forward and inboard position (See Figure 1)
  • This should lower the caster, while keeping the camber within the specification range. If the camber is not in the specification range then rotate the alignment adjustment bushing as needed
  • The final caster and camber settings must be within the specification limits



Figure 1 – Article 05-22-1

  • Maintain the current front camber, cross-camber and cross-caster settings as close as you possibly can
  • Adding weight behind the rear axle lowers the rear of the vehicle, which decreases the frame angle, which in effect increases caster
  • Observe the camber position of the alignment bushing that is currently in the truck and attempt to maintain that position while moving the caster position forward in the truck
  • The final caster and camber settings must be within the specification limits

NOTE:CASTER SETTING IS VERY IMPORTANT IN RESOLVING THIS ISSUE. INCREASING THE CASTER SETTING WILL MAKE THIS ISSUE WORSE.

REPLACEMENT OF REDUNDANT CONTROL STEERING WHEEL – Vehicles Built Prior To 10/8/2004 Only

NOTE:THE REPLACEMENT STEERING WHEEL WILL CONTAIN THE REDUNDANT CONTROLS.

  1. Remove driver air bag assembly. Refer to Workshop Manual Section 211-04 for complete instructions.
  2. Remove the steering wheel.
  3. Install new steering wheel.
  4. Reinstall driver air bag assembly.
  5. Re-set clear vision as required.

    NOTE:FOR ADDITIONAL INFORMATION, PLEASE REFER TO SECTION 211-04 OF THE 2005 OR 2006 SUPER DUTY F-SERIES WORKSHOP MANUAL FOR COMPLETE REMOVAL AND INSTALLATION PROCEDURES FOR THE STEERING COLUMN.


PART NUMBERPART NAME
5C7Z-3600-ABARedundant Control Steering Wheel Asy (King Ranch Tan/Peb)
5C7Z-3600-CBARedundant Control Steering Wheel Asy (Charcoal Black)
5C3Z-3E651-CAF-250/350 4×4, All F-450/550 – Damper
5C3Z-3E651-BAF-250/350 4×2 – Damper
5C3Z-3B440-CF-250/350 4×2 (0.5 degree bushing)
5C3Z-3B440-DF-250/350 4×2 (0.75 degree bushing)
5C3Z-3B440-EF-250/350 4×2 (1.0 degree bushing)
5C3Z-3B440-CCCF-250/350 4×4 (0.5 degree bushing)
5C3Z-3B440-DDDF-250/350 4×4 (0.75 degree bushing)
5C3Z-3B440-EEEF-250/350 4×4 (1.0 degree bushing)
5C3Z-3B440-HHHF-450/550 4×4 and 4×2 (0.5 degree bushing)
5C3Z-3B440-JJJF-450/550 4×4 and 4×2 (0.75 degree bushing)
5C3Z-3B440-KKKF-450/550 4×4 and 4×2 (1.0 degree bushing)

NOTE:THE WHEEL ALIGNMENT LABOR OPERATIONS MAY BE CLAIMED WITH THE REPAIR OPERATIONS IN THIS ARTICLE.

WARRANTY STATUS:

Eligible Under Provisions Of New Vehicle Limited Warranty Coverage

OPERATIONDESCRIPTIONTIME
052201AF-Super Duty With Gas Engine: Perform Inspection/Evaluation Adjust Mesh Load (Do Not Use With 3504C, 3600A, 3001A, 3001A1, 3001A1T)2.2 Hrs.
052201AF-Super Duty With 6.0L Diesel Engine: Perform Inspection/Evaluation Adjust Mesh Load (Do Not Use With 3504C, 3600A, 3001A, 3001A1, 3001A1T) 3.2 Hrs.
052201BF-Super Duty With Gas Engine: Perform Inspection/Evaluation Adjust Mesh Load, And Replace Damper (Do Not Use With 3504C, 3600A, 3001A, 3001A1, 3001A1T) 2.3 Hrs.
052201BF-Super Duty With 6.0L Diesel Engine: Perform Inspection/Evaluation Adjust Mesh Load, And Replace Damper (Do Not Use With 3504C, 3600A, 3001A, 3001A1, 3001A1T) 3.2 Hrs.
052201CF-Super Duty With Gas Engine: Perform Inspection/Evaluation Adjust Mesh Load, And Replace Steering Wheel (Do Not Use With 3504C, 3600A, 3001A, 3001A1, 3001A1T) 2.8 Hrs.
052201CF-Super Duty With 6.0L Diesel Engine: Perform Inspection/Evaluation Adjust Mesh, Load And Replace Steering Wheel (Do Not Use With 3504C, 3600A, 3001A, 3001A1, 3001A1T) 3.6 Hrs.
052201DF-Super Duty With Gas Engine: Perform Inspection/Evaluation Adjust Mesh Load, Replace Damper And Steering Wheel (Do Not Use With 3504C, 3600A, 3001A, 3001A1, 3001A1T) 2.9 Hrs.
052201DF-Super Duty With 6.0L Diesel Engine: Perform Inspection/Evaluation Adjust Mesh Load, Replace Damper And Steering Wheel (Do Not Use With 3504C, 3600A, 3001A, 3001A1, 3001A1T) 3.7 Hrs.
052201EF-Super Duty: Check Caster, Camber, and Toe (Do Not Use With 3504C, 3600A, 3001A, 3001A1, 3001A1T) 0.4 Hr.
052201FF-Super Duty 4X2: Check Caster, Camber, Toe And Adjust One Side (Do Not Use With 3504C, 3600A, 3001A, 3001A1, 3001A1T) 1.3 Hrs.
052201GF-Super Duty 4X2: Check Caster, Camber, Toe And Adjust Both Sides (Do Not Use With 3504C, 3600A, 3001A, 3001A1, 3001A1T) 1.9 Hrs.
052201HF-Super Duty 4X4: Check Caster, Camber, Toe And Adjust One Side (Do Not Use With 3504C, 3600A, 3001A, 3001A1, 3001A1T) 1.5 Hrs.
052201IF-Super Duty 4X4: Check Caster, Camber, Toe And Adjust Both Sides (Do Not Use With 3504C, 3600A, 3001A, 3001A1, 3001A1T)2.3 Hrs.

DEALER CODING

BASIC PART NO.CONDITION CODE
360042