Steering Mode Selection.
Position the steering mode control handle for the
proper cab. Failure to do so will result in a lack of
steering which could cause serious damage and
In order to steer the crane from the superstructure
cab after driving the crane from the carrier cab, the
diesel engine must be shut down, the Hydraulic
Pump disconnect control in the carrier cab must be
engaged, the STEERING MODE CONTROL Handle
diesel engine must be restarted in the superstructure
The STEERING MODE CONTROL Handle (Figure 5-3) is mounted to the
hydraulic tank on the left side of the carrier. Position the handle for the proper cab.
Raise the lock lever and pull out the handle for superstructure cab
steering. When the control handle is pulled out, the CARRIER
STEERing DISENGAGED Indicator (24, Figure 5-1) on the carrier cab
front console panel is on to alert the operator that superstructure cab
has steering control.
Lower the lock lever to lock the steering mode control handle in place.
Rear Axle Steering. Since most craning operations are performed with the
boom positioned over the rear of the crane, conventional "front wheel" steering can be
accomplished by unlocking the rear axle. Then using the superstructure steering wheel, the
crane can be steered in the direction the steering wheel is turned (e.g., steer left, turn left). This
method of steering should always be used when controlling the crane travel from the
Unlock rear axle steering before traveling. Lack of
steering control could cause damage to the crane
and/or serious injury to personnel.
UNLOCKED position. Ensure that indicator to right of the REAR AXLE
STEERING LOCK Switch (51) on console is out. If light is still lit, place
REAR AXLE STEERING LOCK Switch (51) to UNLOCKED. If light
remains lit, there is a steering system malfunction. Contact maintenance
Steer crane using Steering Wheel (15) in superstructure cab.