Specifications
AIRTEK for Blue Bird Vision Buses – 10K
HENDRICKSON RECOMMENDED TORQUE SPECIFICATIONS
NO. COMPONENT QTY. SIZE
TORQUE VALUE
(in foot pounds)
1 Front Frame Hanger to Front Leaf Spring Eye 2 M20 *290-310
2 Rear Shackle Bracket to Shackle Plate 2 M20
*290-310
3 Rear Shackle Bracket to Spring Eye 2 M20
*290-310
4 Air Spring 2 Self-Locking Snap Fit
5 Height Control Valve to Frame 2 ¼" 8-10
6 HCV Linkage to HCV Arm 2
5
/
16
" 10-12
7 HCV Linkage to Top Pad 2
5
/
16
" 10-12
8 HCV Linkage Grommet to HCV Arm 1 Grommet Push In
9 HCV Linkage Grommet to Top Pad 1 Grommet Push In
10 Spring Center Aligning Dowel Pin (Flat Floor Bus) 2 ¾" ***Loose Fit
11 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.
12 Clamp Group Hardware 8 ¾" 285-305
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.
13 Knuckle Attachment Bolt (Socket Head Cap Screw) 4
5
/
8
" 175-200
14 Knuckle / Axle Wheel Stop Bolt 2
5
/
8
" Jam Nut 40-60
15 Tie Rod Tube to Tie Rod Ends 2
5
/
8
" 60-75
16 Tie Rod Ends to Lower Steering Knuckle 2
7
/
8
" Castle Nut **185
17 Shocks Eye Bolts 2 ¾"
*125-135
• 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 lbs., advance nut to next hex face to install cotter pin. Do not back off nut for cotter pin installation.
*** Denote items not shown on illustration.
MODEL
AIRTEK COMFORT AIR
Blue Bird RIDE HEIGHT
SHOCK ABSORBER
LENGTH
RIDE HEIGHT
SHOCK ABSORBER
LENGTH
From the bottom of the
frame to the center of axle
At ride height with a
tolerance of ¼"
From the bottom of the
frame to the bottom of the
main support member.
At ride height with a
tolerance of ¼"
Vision 10K 12½" 18
9
/
16
" 4
7
/
8
" 22¾"
A-101
17730–248 Appendix
A-101
SERVICE MANUAL
L
143
FRONT AXLE & SUSPENSION
1
APPENDIX