Specifications

17730-248 65 Component Replacement
AIRTEK
®
•
SOFTEK
®
for Blue Bird Buses
11. Remove the ¾" clamp group locknuts and discard.
DO NOT USE A CUTTING TORCH TO REMOVE CLAMP GROUP BOLTS OR ATTACHING
FASTENERS. THE USE OF SUCH HEAT ON SUSPENSION COMPONENTS CAN ADVERSELY AFFECT
THE STRENGTH OF THESE PARTS. A COMPONENT DAMAGED IN THIS MANNER CAN RESULT IN
THE LOSS OF VEHICLE CONTROL AND POSSIBLE PERSONAL INJURY OR PROPERTY DAMAGE.
SERVICE HINT If a clamp group nut fails to come off bolt, cut half way through the bolt with an abrasive
cut off wheel, taking care not to contact axle beam or other components. Using an impact
wrench, spin the locknut to fracture the bolt and remove.
12. Remove the ¾" clamp group bolts, the top pad, galvanized liner and the bottom axle
wrap and liner. Discard the clamp group bolts, see Figure 9-18.
13. Remove the spring assembly.
ASSEMBLY
1. Install the new spring and wrap leaf assembly on the axle. Verify the center bolt is locat-
ed properly in the top axle wrap and spacer (if equipped), see Figure 9-18.
2. Install the new galvanized liner and the top pad onto the spring.
3. Remove and replace the bottom axle wrap liner located in bottom axle wrap.
4. Install the bottom axle wrap.
5. Install the new ¾" clamp group bolts, washers, and locknuts. New clamp group fas-
teners must be used when the clamp group is removed, to prevent premature bolt
fatigue.
6. Snug the clamp group, DO NOT torque at this time.
7. Raise the axle and the spring assembly into the front hanger and rear shackle
assembly.
8. Install the M20 spring eye bolts, washers and locknuts. Snug bolts. Do not tighten.
9. Ensure that the clamp group is properly aligned and the hex bolts are seated in the top
pad, and the bottom axle wrap is centered with the top axle wrap, see Figure 9-19.
FIGURE 9-19
FIGURE 9-20
10. Tighten the clamp group locknuts evenly in 50 foot pounds increments
to 285-305 foot pounds torque in the proper pattern to achieve uni-
form bolt tension, see Figure 9-20.
SERVICE MANUAL
L
107
FRONT AXLE & SUSPENSION
1
APPENDIX