F 350 4WD Super Duty V8-6.4L DSL Turbo (2008)
Inspect the ball joint for relative movement by alternately pulling outward and pushing inward on the wheel and tire assembly at the 12 o'clock and
6 o'clock positions, by hand. Note any relative movement between the wheel knuckle and the axle at the upper ball joint.
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If relative movement is not felt or seen, the ball joint is OK. Do not install a new ball joint.
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If relative movement is found, continue with Step 8.
8. NOTE: In order to obtain an accurate measurement, the dial indicator should be aligned as close as possible with the center line of the ball joint.
To measure ball joint deflection, attach a suitable dial indicator with a flexible arm between the axle and the wheel knuckle at the upper ball joint.
9. Measure the ball joint deflection while an assistant alternately pulls outward and pushes inward on the wheel and tire assembly at the 12 o'clock
and 6 o'clock positions, by hand.
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If the deflection exceeds the specification, a new upper ball joint must be installed.
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If the deflection meets the specification, no further action is required.
