•
Front end out of alignment
•
Total vehicle out of alignment (i.e. rear axle[s] out of alignment with
front axle)
•
Improper adjustment in the steering gear
•
Vehicle overloaded or unevenly loaded
•
High crosswinds
•
High crown in center of road
•
Components in steering linkage loose or worn
•
Wheel bearings improperly adjusted
•
Excessive lash in steering shaft or universal joints
If the vehicle steers hard
Hard steering can be caused by any of the following conditions:
•
Underinflated tire(s) on any wheel(s)
•
Vehicle overload
•
Misalignment of the front tires
•
Lack of lubricant in the front spindle bearings or linkage components
•
Low oil level in the power steering system
•
Broken or loose power steering pump direct drive connection
•
Malfunctioning relief valve in power steering gear or steering pump
•
Malfunctioning power steering pump
•
Restriction in power steering lines
•
Improperly set turn stops
•
Air entrapped in power steering system fluid
AIR SUSPENSION SYSTEM (IF EQUIPPED)
The on-highway air suspension system is designed to provide a superior
ride, outstanding driver comfort while minimizing wear on the cab, frame
and payload.
The height control valve automatically keeps the vehicle at a constant
level due to load changes and uneven road surfaces.
Driving
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