Spicer Steer Axles Application Guidelines - Manual (Page 30)

< 24 > back AXAG400 – February 2007
Overall Width
Overall width is defined as the dimension across the widest point on the axle. As seen in the picture
above, this overall width is across the wheel studs on the hub as shown.
Tire SLR (static loaded radius)
Tire SLR or Static Loaded Radius is the measured distance from the ground at point of contact to the
center of the spindle / tire while at the recommended load. This recommended load would be the GAWR.
The picture below shows the SLR for a typical situation.
Steering Stop
Steer stops are set at the factory. Adjustment can be accomplished by loosening the jam nut and turning
the stop screw in or out depending on turn angle needed. Jam nut must be re-tightened when complete.
The picture below shows where this turn angle is established and the relationship between the stop screw
and the forged stop on the beam. Steering stops are used to limit the amount of turn angle in a vehicle
depending on clearance of the tires and steer axle components to the frame rails, suspension, etc. Most
steering gears have poppet relief plungers that when properly adjusted will cut off power assist at the end
of steering travel. This reduces pump wear and excessive stress on steering linkage components. They
should be adjusted to cut power assist leaving a gap of 1/8 to 3/16” between the spindle stop and the
axle. It is important that the steer stops are set properly first in order for the steering gear poppets to be
properly adjusted to protect the power steering system. This adjustment procedure is described on the
following pictures.
SLR