8-2 Published 08-25-09, Control # 077-04
UNDERCARRIAGE RT9130E SERVICE MANUAL
Cleaning
Completely assembled axles may be steam cleaned on the
outside only, to facilitate initial removal and disassembly,
providing all openings are closed. Breathers, vented shift
units, and all other openings should be tightly covered or
closed to prevent the possibility of water entering the
assembly.
Installation
1. If a new axle is to be installed, remove the following from
the old axle and install them on the new one.
a. The steer cylinders.
b. The rear wheels not centered switch actuator
bracket (rear axle only).
c. The parking brake actuator (front axle only). Refer
to BRAKE SYSTEM in this section.
2. Position the axle under the crane on jacks which are
capable of handling the weight of the axle.
3. Raise the axle into place and secure with the eight
attaching bolts, washers, and nuts. Torque the bolts to
2556 to 2770 Nm (1885 to 2043 foot-pounds).
4. Install the wheels onto the axle. Refer to WHEELS AND
TIRES in this section.
5. Connect the hydraulic lines to the steer cylinder as
tagged during REMOVAL.
6. Connect the hydraulic brake line to each wheel as
marked during removal.
7. On the front axle only, connect the hydraulic line to the
parking brake actuator.
8. On the right side of the rear axle only, connect the
electrical wires to the rear wheels not centered switch.
Refer to Rear Wheels Not Centered Switch Adjustment
Procedure in this section and adjust the switch.
9. Connect the drive line to the applicable axle. Refer to
DRIVE LINES in Section 7 - POWER TRAIN.
10. Reconnect differential lock hoses and wires if
applicable.
11. Refer to BRAKE SYSTEM in this section and bleed the
hydraulic brake system.
12. Remove the blocking under the outrigger beams and
retract the outriggers to lower the wheels to the ground.
Wheel Alignment Check Procedure
1. Check the axle for wheel alignment. The wheels are to
be straight ahead with no toe-in or toe-out. Adjust if
necessary by turning the tie rod ends in the direction
necessary.
2. Check pre-set axle stop by turning the wheels to the
extreme left. Check the clearance between the inside of
the tire and the nearest object. If the clearance is less
than 25.4 mm (1.0 inch), adjust the axle stop to provide
clearance.
3. Turn the wheels to the extreme right and repeat step 2
for the right side.
Rear Wheels Not Centered Switch
Adjustment Procedure
1. Ensure the wheels are straight ahead.
NOTE: Refer to (Figure 8-1) for rear wheels not centered
switch adjustment.
2. Ensure proximity sensor switch is centered in the slot of
the sensor plate bolted to the axle oscillation lockout
cylinder. Adjust by moving the sensor mounting bracket.
3. Ensure a maximum gap of 4.8 mm (0.19 in) exists
between the sensor switch and the sensor plate. Adjust
by loosening switch mounting bolts and moving switch
up or down on the mounting bracket. Tighten the
mounting bolts.
4. Turn the rear wheels to verify proper operation. REAR
WHEELS NOT CENTERED light in cab should be out
when rear wheels are centered and the sensor switch is
centered in the slot of the sensor plate.
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