Specifications

Alignment & Adjustments 46 17730-248
AIRTEK
®
•
SOFTEK
®
for Blue Bird Buses
STEERING STOP
ADJUSTMENT PROCEDURE
When the axle or lower steering knuckle is replaced, the steering stop adjustment must be
checked.
The steering stop adjustment procedure is as follows:
1. Drive truck onto turntables and chock the rear wheels.
2. Measure the wheel cut. The wheel cut is determined by steering the tires. Wheel cut is
measured at the inside wheel only, therefore the tires must be turned to the full lock
position for each right hand and left hand direction. Refer to the vehicle manufacturer
for exact specifications.
3. Increase the wheel cut by loosening the jam nuts and screw the axle stops in clockwise.
4. Tighten the jam nuts.
FIGURE 8-18
NOTE It is very important that the
sides of the square head axle
stops are set parallel to the
axle beam to ensure a good
contact point on the axle, see
Figure 8-18.
5. Decrease the wheel cut
by loosening the jam
nuts and screw the axle
stops out counter-
clock-wise.
6. Tighten the jam nuts to 40-60 foot pounds torque.
7. Measure the wheel cut and check for any interference with related steering components.
ALWAYS CHECK/RESET THE STEERING GEAR BOX POPPET WHEN THE WHEEL CUT IS
DECREASED. FOLLOW MANUFACTURER'S GUIDELINES FOR THE GEAR BOX POPPET RESETTING
PROCEDURE. FAILURE TO DO SO CAN RESULT IN PREMATURE FAILURE OF THE AXLE OR
STEERING KNUCKLE. THIS CONDITION CAN CAUSE LOSS OF VEHICLE CONTROL, PERSONAL
INJURY OR PROPERTY DAMAGE AND VOID WARRANTY.
TOE SETTING
1. Place the vehicle on a level floor with the wheels in a straight ahead position.
2. Raise the vehicle and support the front axle with jack stands.
3. Use paint and mark the center area of tread on both steer axle tires around the com-
plete outer diameter of the tires.
4. Scribe a line through both steer axle tires in the painted area around the complete outer
diameter of the tires.
5. Raise the vehicle and remove the jack stands.
6. Set the vehicle on the ground.
NOTE Do not measure toe-in with the front axle off the ground. The weight of the vehicle must be
on the front axle when toe-in is measured.
7. Use a trammel bar and measure the distance between the scribe marks at the rear of
the steer axle tires. Record the measurement.
L
88
1
APPENDIX
SERVICE MANUAL