E 450 V8-5.4L (2009)
Poor Returnability/Sticky Steering
Wheel Alignment Angles
The vehicle caster and camber correction requirements are factory-determined. Adjusters are available to correct a caster/camber measurement that does
not meet specification. Before changing the production caster/camber adjuster, thoroughly inspect the suspension system to locate worn or damaged
components that may have caused the setting to change.
Poor Returnability/Sticky Steering
Poor returnability and sticky steering is used to described the poor return of the steering wheel to center after a turn or the steering correction is
completed.
Shimmy
Wheel Alignment Angles
The vehicle caster and camber correction requirements are factory-determined. Adjusters are available to correct a caster/camber measurement that does
not meet specification. Before changing the production caster/camber adjuster, thoroughly inspect the suspension system to locate worn or damaged
components that may have caused the setting to change.
Shimmy
Shimmy, as observed by the driver, is large, consistent, rotational oscillations of the steering wheel resulting from large, side-to-side (lateral) tire/wheel
movements.
Shimmy is usually experienced near 64 km/h (40 mph) and can begin or be amplified when the tire contacts pot holes or irregularities in the road surface.
Toe
Wheel Alignment Angles
The vehicle caster and camber correction requirements are factory-determined. Adjusters are available to correct a caster/camber measurement that does
not meet specification. Before changing the production caster/camber adjuster, thoroughly inspect the suspension system to locate worn or damaged
components that may have caused the setting to change.
Toe
Positive Toe (Toe In)
Negative Toe (Toe Out)
The vehicle toe setting:
-
affects tire wear and directional stability.