Suspension - Vehicle Leans/Sags To One Side
TSB O4-23-611/29/04
VEHICLE LEAN/SAG WHEN OBSERVED FROM REAR
OF VEHICLE
FORD:
1999-2005 F-250, F-350
ISSUE
Some 1999-2005 F-Super Duty 250/350 vehicles may exhibit a vehicle lean or sag, to the right or left, when looking at the vehicle from the rear.
ACTION
It may be necessary to install Ford approved shims to correct vehicle lean condition. Refer to the following Service Procedure.
SERVICE PROCEDURE
NOTE
WHEN VERIFYING THE VEHICLE LEAN ALL EQUIPMENT MUST BE REMOVED FROM THE VEHICLE SUCH AS TOOL BOXES, CAPS, BED FUEL TANKS, ETC. THE VEHICLE MUST BE PARKED ON A LEVEL SURFACE.
NOTE
THIS REPAIR MAY ONLY BE PERFORMED ON THE REAR OF THE VEHICLE. DO NOT ATTEMPT THIS PROCEDURE ON THE FRONT OF THE VEHICLE.
1. Check for fractured or broken springs, both front and rear.
a. If a spring is fractured, replace the spring and re-evaluate the vehicle. If the condition is corrected return the vehicle to the customer, if not proceed to Step 2.
NOTE
IF SPRING REPLACEMENT IS NECESSARY, REFER TO PART CATALOG FOR PROPER APPLICATION AND PART NUMBER INFORMATION.
b. If springs are found to be OK, proceed to Step 2.
2. Check tire pressures and adjust if necessary.
3. Measure the vehicle ride height from wheel lip to top of wheel well opening, at all four corners, Figure 1.
4. Calculate the difference between left to right (Worksheet 1).
5. Measure chassis ride height per Workshop Manual Section 204-00 (Description And Operation; Ride Height) at all four corners and calculate the difference between left to right (Worksheet 2).
6. Refer to the chart for repair action to take.
7. If shim installation is needed, install the shim as shown in Figures 2 and 3.
8. Inspect U-bolts and replace if necessary.
NOTE
IF U-BOLT REPLACEMENT IS NECESSARY, REFER TO PART CATALOG FOR PROPER APPLICATION AND PART NUMBER INFORMATION.
9. After shim installation re-measure the vehicle ride height per Workshop Manual Section 204-00. If the ride height is now greater than 200 mm for a single rear wheel vehicle, or 210 mm for a dual rear wheel vehicle replace the spring.
CAUTION
IF NECESSARY INSTALL NEW SUSPENSION FASTENERS. ALWAYS REPLACE FASTENERS WITH THE SAME PART NUMBER, OR AN EQUIVALENT PART. DO NOT USE A REPLACEMENT FASTENER OF LESSER QUALITY OR DIFFERENT DESIGN. TORQUE VALUES MUST BE USED AS SPECIFIED IN THE WORKSHOP MANUAL FOR CORRECT RETENTION OF COMPONENT.
Parts Block
WARRANTY STATUS: Eligible Under Provisions Of New Vehicle Limited Warranty Coverage
DEALER CODING
CONDITION
BASIC PART NO. CODE
5560 63
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