Component Replacement
48
17730-299
ULTIMAAX
®
for Fire and Rescue Vehicles
5 . Apply hydraulic force and press the new bushing into place . The bushing will be completely
seated when the clamp makes contact with the beam face .
6 . Install one adapter through the axle bracket leg at the wheel side, into the beam end bushing,
see Figure 8-40 .
FIGURE 8-40
FIGURE 8-41
7 . Install the other adapter through the axle bracket
leg at the axle side, taking advantage of the cut-
off flange on the adapter to clear the axle .
8 . Insert adapter connections, see Figure 8-41 .
9 . Rotate the adapters so the adapter cut off flats
are vertical as shown in Figure 8-41 .
NOTE
Axles must be in operational position before fasten-
ers are tightened to prevent pre-loading of the rubber
bushing .
10 . Assemble one slotted nut to the shaft and install the cotter pin . Place a suitable wrench on the
nut and ensure the wrench is locked in place (braced) to prevent movement . Tighten using
one of the following torque procedure .
TORQUE PROCEDURE
IF THE RECOMMENDED TORQUE VALUE IS NOT PROPERLY MAINTAINED, THE METAL SURFACES OF THE
AXLE BRACKET LEGS, HOLES, ADAPTERS AND RUBBER BUSHING INNER METALS CAN EXPERIENCE
EXCESSIVE WEAR AND/OR FAILURE . THIS CAN CAUSE SEPARATION OF COMPONENTS AND ADVERSE
VEHICLE HANDLING, PROPERTY DAMAGE OR PERSONAL INJURY .
A simple torque wrench will not be sufficient to obtain the proper torque requirement . The proper
torque requirement can be obtained with the use of a torque multiplier . If one is not available the
use of a slug wrench is recommended .
METHOD A:
TORQUE MULTIPLIER
You will need:
■
Torque Multiplier
a . Assemble the opposite nut and use a torque wrench with multiplier .
b . Tighten the nut to torque multiplier value 700 ± 50 Foot Pounds torque, see Table 1 .
DO NOT BACK OFF NUT TO INSTALL COTTER PIN, DOING SO MAY REDUCE THE TIGHTENING TORQUE
BELOW THE REQUIRED SPECIFICATION .
c . Install cotter pin . The nut may be advanced to the next nut slot .
DO NOT
back off nut .
Equalizing Beam
Adapter Style
End Bushing
Beam End Adapter
Beam End Shaft
1 / " Slotted Nut
7
8
Beam End Adapter
1 / " Slotted Nut
Tightening Torque
125 ft. lbs. (170 Nm)
+ 90° rotation or
700 ± 50 ft. lbs. (949 ± 68 Nm)
7
8
Cotter Pin
63K Shown
ULTIMAAX
Axle Bracket
Adapter
Equalizing
Beam
Adapter
Flat Side
Vertical
Chisel Reliefs