Specifications

17730-248 83 Component Replacement
AIRTEK
®
•
SOFTEK
®
for Blue Bird Buses
17. Install the tie rod end cotter pins.
18. Connect the drag link. Install the castle nut. Tighten the castle nut to 185 foot
pounds, then rotate until the first castle slot lines up with the cotter pin bore in the drag
link. Do not back off the nut for cotter pin installation.
19. Install the drag link cotter pin.
20. Install the brake backing plate assemblies.
21. Install the brakes, hubs, and wheels as per manufacturer’s guidelines.
22. Fill the hubs with the proper lubricant (see manufacturer’s guidelines for recommend-
ed lubrication specifications).
23. Raise the vehicle and remove the frame stands.
24. Lower the vehicle.
25. SOFTEK equipped vehicles — proceed to step number 27.
26 AIRTEK equipped vehicles — Reconnect the height control valve and air up the system.
FIGURE 9-47
27. Tighten the ¾" clamp group locknuts evenly in 50 foot pounds incre-
ments to 285-305 foot pounds torque in the proper sequence to
achieve uniform bolt tension, see Figure 9-47.
28. SOFTEK equipped vehicles — proceed to step number 30.
29 AIRTEK equipped vehicles — Adjust ride height per instructions in the Alignment &
Adjustments Section of this publication.
30. Grease the front steering components as per lubrication guidelines in the Preventive
Maintenance Section of this publication.
31. Remove the wheel chocks.
STEERING KNUCKLE DISASSEMBLY
DISASSEMBLY
See tools needed to remove and install kingpin bushing under the Special Tools Section of
this publication.
The steering knuckle disassembly and assembly includes the Kingpin Preparation and
Measurement and Kingpin Bushing Removal process.
1. Place the vehicle on level floor.
2. Chock the wheels.
3. Raise the frame.
4. Support the vehicle with frame stands.
5. Remove the wheel and hub assembly.
6. Remove the brake components from steering knuckle.
7. Remove the tie rod assembly.
FIGURE 9-48
SERVICE HINT Lightly tap the side of the Ackermann
arm with a mallet to separate the tie
rod end from the Ackermann arm, see
Figure 9-48.
8. Remove the drag link from the
knuckle if necessary.
SERVICE MANUAL
L
125
FRONT AXLE & SUSPENSION
1
APPENDIX