Specifications

SOFTEK for Blue Bird All American Buses – 13.2K/14.6K
HENDRICKSON RECOMMENDED TORQUE SPECIFICATIONS
NO. COMPONENT QTY. SIZE
TORQUE VALUE
(in foot pounds) (in Nm)
1 Front Frame Hanger to Front Leaf Spring Eye 2 M20 *290-310 *393-420
2 Rear Shackle Bracket to Shackle Plate 2 M20
*290-310 *393-420
3 Rear Shackle Bracket to Spring Eye 2 M20
*290-310 *393-420
4 Spring Center Aligning Dowel Pin (Flat Floor Bus) 2 ¾" Loose Fit
5 Axle Wrap Liners for Clamp Group 2 Formed Snap Fit
DO NOT ASSEMBLE CLAMP GROUP WITHOUT AXLE WRAP LINERS. FAILURE TO DO SO CAN CAUSE
LOSS OF VEHICLE CONTROL, PROPERTY DAMAGE OR PERSONAL INJURY.
6 Clamp Group Hardware 8 ¾" 285-305 386-414
ENSURE CLAMP GROUP IS ALIGNED PROPERLY PRIOR TO TIGHTENING HARDWARE. FAILURE TO DO
SO CAN CAUSE LOSS OF VEHICLE CONTROL, PROPERTY DAMAGE OR PERSONAL INJURY.
7 Knuckle Attachment Bolt (Socket Head Cap Screw) 4
5
/ 8 " 175-200 237-271
8 Knuckle / Axle Wheel Stop Bolt 2
5
/ 8 " Jam Nut 40-60 54-81
9 Tie Rod Tube to Tie Rod Ends 2
5
/ 8 " 60-75 81-102
10 Tie Rod Ends to Lower Steering Knuckle 2
7
/ 8 " Castle Nut **185 **251
11 Shocks Eye Bolts 4 ¾"
*125-135 *169-183
12 Rubber Axle Stop 2 — Press Fit
• All hardware ¼" and greater is Grade 8 with no additional lubrication.
Frame mount hardware in most cases are Huck style fasteners supplied by the OEM.
NOTE:
* All hardware information in gray in the matrix denotes recommended torques for fasteners originally supplied by the vehicle
manufacturer. If Hendrickson supplied fasteners are used, tighten to Hendrickson torque values, if non Hendrickson fasteners are used,
follow torque specifications listed in the vehicle manufacturer’s service manual. Hendrickson is not responsible for maintaining vehicle
manufacturer’s torque values.
** Torque to 185 foot pounds (251 Nm), advance nut to next hex face to install cotter pin. Do not back off nut for cotter pin installation.
A-107
17730–248 Appendix
A-107
SERVICE MANUAL
L
149
FRONT AXLE & SUSPENSION
1
APPENDIX