Fulltext TSBs

Technical Service Bulletins

TSB
05-26-6
  • RAPID FEATHERING WEAR OF FRONT TIRES
Publication Date: December 19, 2005

FORD:
2004 F-150

This article supersedes TSB 05-9-19 to update the Service Procedure.

ISSUE:

Some 2004 F-150 vehicles (excluding Heritage) equipped with the following tires, may exhibit tire wear on the inside or outside edge of the front tires:

  • Hankook P235/70 R17 XL 108S, All Season, Black Sidewall
  • Hankook P235/75 R17 108S, All Terrain, Black Sidewall

ACTION:

The action necessary to correct the tire wear concern differs based on the amount of wear and the vehicle build date. Follow the Tire Inspection Procedure to confirm the tires on the vehicle are exhibiting feathering wear. If tires are exhibiting feathering wear, follow correct procedure based on build date and extent of wear.

NOTE:THIS TIRE INSPECTION PROCEDURE AND ACTION IS SPECIFIC TO HANKOOK TIRES ONLY AND VEHICLE BUILD DATE.

SERVICE PROCEDURE

NOTE:THE REVISED TOE SETTING IN THIS TSB APPLIES ONLY TO THE TSB RELATED TIRE WEAR CONCERNS AND SHOULD NOT BE USED AS A REVISED SETTING FOR VEHICLES THAT ARE NOT SPECIFICALLY ADDRESSED IN THIS TSB.

NOTE:REFER TO WORKSHOP MANUAL SECTION 204-00 FOR ALIGNMENT PROCEDURES. REFER TO THE WARRANTY AND POLICY MANUAL FOR TIRE AND ALIGNMENT REIMBURSEMENT COVERAGE.

TIRE INSPECTION PROCEDURE

  1. Visually inspect the front tires at both the inside and outside shoulder ribs to establish whether feathering (heel/toe) wear exists (Figure 1). If there is a difference in tread depth of the leading compared to trailing edge, of each lug in the inside and/or outside shoulder rib, the tires are exhibiting feathering (heel/toe) wear.


    Figure 1 – Article 05-26-6

  2. If feathering is present, check the extent of the feathering by using a depth caliper to measure the difference between the highest and the lowest point on each lug A-B-C (Figure 2). Do this in five (5) locations around the tire, then refer to one of the following procedures based on build date.


    Figure 2 – Article 05-26-6

VEHICLES BUILT ON OR BEFORE MARCH 31, 2004:

  1. If the average difference in tread depth between leading and trailing edge is 0.08″ (2 mm) or more, replace front tires and the upper control arms. Inspect rear tires for abnormal wear, replace if tread depth is less than 0.16″ (4 mm).
  2. If the average difference in tread depth between leading and trailing edge is less then 0.08″ (2 mm), rotate the tires front to back. Tire replacement is not required.
  3. Ensure that the camber and caster readings are within specification and set the front total toe to 0.20 0.05 degrees (nominal).

VEHICLES BUILT ON OR AFTER APRIL 1, 2004:

NOTE:THESE VEHICLES DO NOT REQUIRE UPPER CONTROL ARM REPLACEMENT, THE LATEST PART IS ALREADY INSTALLED.

  1. If the average difference in tread depth between leading and trailing edge is 0.08″ (2 mm) or more, replace front tires. Inspect the rear tires for abnormal wear, replace if tread depth is less than 0.16″ (4 mm).
  2. If the average difference in tread depth between leading and trailing edge is less then 0.08″ (2 mm), rotate the tires front to back. Tire replacement is not required.
  3. Ensure that the camber and caster readings are within specification and set the front total toe to 0.20 0.05 degrees (nominal).

PART NUMBERPART NAME
4L3Z-3084-ABUpper Control Arm – RH
6L3Z-3085-ALUpper Control Arm – LH

WARRANTY STATUS:

Eligible Under Provisions Of New Vehicle Limited Warranty Coverage

OPERATIONDESCRIPTIONTIME
052606A2004 F150: Inspect Tires, Rotate Tires Front To Back, Check And Adjust Alignment1.9 Hrs.
052606B2004 F150 Built On Or Before 3-31-2004: Inspect Tires, Replace/Balance The Front Tires And Front Upper Control Arms, Check And Adjust Alignment3.2 Hrs.
052606C2004 F150 Built On Or Before 3-31-2004: Inspect Tires, Replace/Balance All Four Tires And Front Upper Control Arms, Check And Adjust Alignment3.5 Hrs.
052606D2004 F150 Built After 3-31-2004: Inspect Tires, Replace/Balance Front Tires, Check And Adjust Alignment2.1 Hrs.
052606E2004 F150 Built After 3-31-2004: Inspect Tires, Replace/Balance All Four Tires, Check And Adjust Alignment (Do Not Use Any Of The Labor Operations In This TSB With 1007AFT, 1007AB, 1007ABT, 1007D3T, 1007D3F, 1007D3FT, 1007D3B, 10073BT, 3082A, 3082AT)2.4 Hrs.

DEALER CODING

BASIC PART NO.CONDITION CODE
3084 (Control Arm) Use With Operation “B” Or “C”30
FRONT (Alignment) Use With Operation “A”W6
TIRE (Tire Replacement) Use With Operation “D” Or “E”30

NOTE: The information in Technical Service Bulletins is intended for use by trained, professional technicians with the knowledge, tools, and equipment to do the job properly and safely. It informs these technicians of conditions that may occur on some vehicles, or provides information that could assist in proper vehicle service. The procedures should not be performed by “do-it-yourselfers”. Do not assume that a condition described affects your car or truck. Contact a Ford, Lincoln, or Mercury dealership to determine whether the Bulletin applies to your vehicle. Warranty Policy and Extended Service Plan documentation determine Warranty and/or Extended Service Plan coverage unless stated otherwise in the TSB article. The information in this Technical Service Bulletin (TSB) was current at the time of printing. Ford Motor Company reserves the right to supercede this information with updates. The most recent information is available through Ford Motor Company’s on-line technical resources.

Copyright 2005 Ford Motor Company