Specifications

17730-248 57 Component Replacement
AIRTEK
®
•
SOFTEK
®
for Blue Bird Buses
AIRTEK FRONT LEAF SPRING FRAME HANGER
DISASSEMBLY
1. Place the vehicle on level floor.
2. Chock the wheels.
3. Raise the frame.
4. Support the vehicle with frame stands.
5. Suspend the front axle from the shock absorbers.
PRIOR TO AND DURING DEFLATION AND INFLATION OF THE FRONT AIR SUSPENSION SYSTEM,
ENSURE THAT ALL PERSONNEL AND EQUIPMENT ARE CLEAR FROM UNDER THE VEHICLE AND
AROUND THE SERVICE AREA, FAILURE TO DO SO CAN CAUSE SERIOUS PERSONAL INJURY,
DEATH, OR PROPERTY DAMAGE.
6. See additional Air Spring Cautions and Warnings in the Important Safety Notice Section
of this publication prior to inflating or deflating the suspension system.
7. Deflate the air springs by removing the height control valve linkage and lowering the
leveling valve arm. This will exhaust the air pressure in the air springs.
8. Remove the air lines from air springs.
9. Remove the M20 spring eye bolt, washers and locknut.
SERVICE HINT A bottle jack may be required to raise the axle slightly to facilitate removal of the spring
eye bolt.
10. Remove the frame mounting fasteners from the hanger. See manufacturer's guidelines.
11. Remove the hanger from the vehicle, see Figure 9-11.
FIGURE 9-11
ASSEMBLY
1. Install the new hanger on the frame.
2. Install new frame fasteners. Follow manufacturer's guidelines.
3. Install the new M20 spring eye bolt from the outboard side of the hanger (see Figure
9-11), washers and locknut.
4. Remove the frame stands and lower frame.
SERVICE MANUAL
L
99
FRONT AXLE & SUSPENSION
1
APPENDIX