Component Replacement
32
17730-299
ULTIMAAX
®
for Fire and Rescue Vehicles
SECTION 8
Component Replacement
FASTENERS
When servicing an ULTIMAAX suspension, Hendrickson recommends replacing all removed fas-
teners with new equivalent fasteners . Maintain correct torque values at all times . Check torque
values as specified, see Hendrickson’s Torque Specifications Section of this publication . If
non-Hendrickson fasteners are used follow torque specifications listed in the vehicle manufac-
turer’s service manual .
NOTE
Torque values shown in this publication apply only if Hendrickson supplied fasteners are used . If
non-Hendrickson fasteners are used, follow the torque specifications listed in the vehicle manu-
facturer’s service manual .
SHOCK ABSORBER
NOTE
It is not necessary to replace shock absorbers in pairs if one shock absorber requires replacement .
DISASSEMBLY
1 . Chock the front wheels of the vehicle .
2 . Remove the lower shock absorber nylon locknut, retainer washer and rubber bushing from the
shock absorber stud, see Figure 8-1 .
3 . Remove the fasteners from the upper shock bracket and remove shock absorber .
FIGURE 8-1
ASSEMBLY
1 . Mount the shock absorber in the upper shock bracket and install fasteners, tighten to
170 ± 20 foot pounds torque, see Figure 8-1 .
2 . Locate the shock absorber stud in the lower shock bracket and install the rubber bushing,
retainer washer and nylon locknut . Tighten to
80 ± 10 foot pounds torque, see Figure 8-1 .
3 . Remove the wheel chocks .
Shock Absorber
Retaining Washer
and Bushing
Equalizing Beam
with Shock Bracket
Upper
Shock Bracket
5 8
/ " Locknut
Tightening Torque
80 ± 10 ft. lbs. (109 ± 14 Nm)
M16 Upper Shock Bracket Fasteners
Tightening Torque
170 ± 20 ft. lbs. (231 ± 27 Nm)
63K Shown
ULTIMAAX
