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TSB
13-3-8
  • 4X4 - REAR OF VEHICLE SITS LOWER THAN EXPECTED UNDER LIGHT LOADS
Publication Date: March 13, 2013

FORD:
2011-2013 F-250

ISSUE:

Some 2011-2013 F-250 Super Duty 4X4 vehicles may exhibit a customer concern of lower than expected rear suspension height under light loads.

ACTION:

Follow the Service Procedure steps to correct the concern.

SERVICE PROCEDURE

Rear ride height may be increased by adding a 10 cm (4") spacer block, along with additional components. Raising rear ride height could affect fifth wheel trailer compatibility.

  1. Lower the rear axle and remove the original 5 cm (2") rear spring spacers. Discard spacer, U-bolts, and nuts. Refer to Workshop Manual (WSM), Section 204-02.
    1. Refer to parts list chart for the correct part and vehicle application(s).
  2. Install 10 cm (4") rear spring spacers, using new U-bolts and nuts.
  3. Raise rear axle and torque U-bolt nuts in proper sequence. Refer to WSM, Section 204-02.
  4. Replace the rear shock absorbers. Refer WSM, Section 204-02.
  5. If the vehicle is equipped with a two-piece driveshaft, replace the driveshaft and center bearing bracket. Refer to WSM, Section 205-01 and proceed to Step 7.
    1. Check driveline angles, if required. Refer to WSM, Section 205-00.
    2. Failure to update the center bearing bracket, if required, may result in driveline shudder.
  6. If the vehicle is equipped with a one-piece driveshaft, replace the driveshaft. Refer WSM Section 204-02 and proceed to Step 7.
  7. If the vehicle is equipped with a camper package with rear suspension stabilizer bar, replace both rear stabilizer bar links. Refer WSM, Section 204-02 and proceed to Step 8.
  8. Adjust headlamp aim. Refer to WSM, Section 417-01.

    NOTE:SEE APPLICATION CHART LOCATED AT THE END OF THE ARTICLE.


PART NUMBER PART NAME
F81Z-5598-FA Spacer Block (RH)
F81Z-5598-GA Spacer Block (LH)
7C3Z-5598-HB Spacer Block
7C3Z-5598-JB Spacer Block
F81Z-5598-DA Spacer Block
BC3Z-5705-C U-Bolts
BC3Z-5705-G U-Bolts
BC3Z-18125-AK Rear Shock
BC3Z-18125-U Rear Shock
BC3Z-18125-AG Rear Shock
BC3Z-18125-V Rear Shock
BC3Z-18125-AM Rear Shock
BC3Z-18125-AH Rear Shock
BC3Z-18125-AA Rear Shock
BC3Z-18125-AB Rear Shock
BC3Z-4602-T Driveshaft
BC3Z-4602-V Driveshaft
BC3Z-4602-X Driveshaft
BC3Z-4R602-HL Driveshaft
BC3Z-4R602-LC Driveshaft
BC3Z-4R602-MP Driveshaft
8C3Z-4831-D Carrier Plate
7C3Z-4831-G Carrier Plate
DC3Z-5K484-B Bar Links

WARRANTY STATUS:

Information Only




Figure 1 - Article 13-3-8

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 or Lincoln 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.

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