SL20K Self-Steering Axle and Suspension System Installation Manual
3
3. Ride Height
Ride Height, also referred to as Run Height, is
the distance between the suspension mounting
surface, or the bottom of the vehicle frame and
the spindle center of the auxiliary lift able axle in
the lowered run position. It is one of the most
important dimensions to obtain and when set
properly, allows for the optimum amount of lift
that the axle can achieve.
IMPORTANT
A correct installation requires that the suspension
ride height be within the range specified on the
corresponding drawing when the vehicle is in its
loaded condition.
Watson & Chalin provides numerous different SL
series suspension systems to accommodate
different vehicle ride heights and capacities.
3.1 Calculating Ride Height
Proper Ride Height is calculated with the
following equation:
Ground to Bottom of
Vehicle Frame (loaded) ______________
Static Loaded Tire Radius – ______________
Ride Height = _______________
** The SL2065 series is equipped with the W&C
quick-change ride height system. If it is
determined above that a ride height change is
necessary and the resulting run height falls within
a designed allowable range, refer to the Quick-
change Ride Height section on page 21 for
details on changing spacers.
FIG – 2 Ride Height
