Move the REAR AXLE STEERING LOCK Switch (47) to the LOCKED
position. Verify that REAR STEER LOCK DISENGAGED Indicator (46)
goes out, and the REAR STEER LOCK ENGAGED Indicator (46) lights. If
the DISENGAGED indicator light stays on, travel must be restricted to low
speed until the malfunction is corrected.
Operate rear axle steering only for added job site
maneuverability when traveling at low speeds. Rear
steering can only be operated with the gear selector
switch in F1 and F2 (forward gears 1st and 2nd), N
(neutral), and R1 (reverse low).
It maybe necessary to move the REAR AXLE
STEERING Control Switch (48) slightly in one
direction or the other to engage the rear axle steer
lock and light the REAR STEER LOCK ENGAGED
Rear Axle Steering. Rear axle steering is controlled by the REAR AXLE
The engine must be shut down to engage or
disengage the Hydraulic Pump Disconnect Control
Attempting to engage control with engine
running will result in damage to pump and
If disengaged, engage the main Hydraulic Pump Disconnect Control (5).
The Hydraulic PUMP ENGAGED Indicator (21) should come on. To engage
the hydraulic pump, it may be necessary to "bump" the diesel engine with
IGNITION Switch (50) to align the pump drive gear with the transmission.
Place the REAR AXLE STEERING LOCK Switch (47) in the UNLOCKED
Move REAR AXLE STEERING CONTROL Switch (48) to the desired
position activates the rear axle steer cylinders, thereby positioning the rear
wheels in the direction necessary to steer the crane in the selected direction.
The REAR STEER DIRECTION Indicator (49) on the front console panel
indicates the direction the crane will turn, except when crabbing.