AirTek AT90 Dokumentacja Pobierz pdf (Strona 74)

Component Replacement 66 17730-248

AIRTEK

•

SOFTEK

for Blue Bird Buses

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.

11. See additional Air Spring Cautions and Warnings in the Important Safety Notice Section

of this publication prior to inflating or deflating the suspension system.

12. Install air spring.

13. Install air lines, and air up system.

14. Remove the frame supports and load the front axle with the vehicle weight.

15. Verify proper ride height. See Alignment & Adjustments Section of this publication.

16. Tighten the M20 spring eye bolt locknuts to vehicle manufacturer's specifications.

SOFTEK LEAF SPRING ASSEMBLY

DISASSEMBLY

1. Place the vehicle on a level floor.

2. Chock the wheels.

3. Raise the vehicle.

4. Support the vehicle with frame stands.

5. Suspend the front axle to remove the load from leaf spring assembly.

6. Remove the front and rear M20 spring eye bolts washer and locknuts. Loosen the M20

shackle pivot bolt.

SERVICE HINT To ease in the removal of the spring eye bolts, it may be necessary to raise the axle slightly.

7. Remove the ¾" clamp group U-bolts, washers and locknuts. Discard the fasteners.

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.

8. Remove the top pad, galvanized liner and the bottom axle wrap, see Figure 9-21.

9. Remove the spring assembly.

ASSEMBLY

1. Install the new spring and wrap leaf assembly on the axle. Verify that the center bolt is

located properly in the top axle wrap and spacer (if equipped), see Figure 9-21.

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 U-bolts, washers, and locknuts. The locknuts must be

replaced when the clamp group is removed, to prevent premature bolt fatigue.

6. Snug the clamp group, DO NOT torque at this time.

108

APPENDIX

SERVICE MANUAL

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