Boom LIFT/MAIN Hoist Control Lever (8). The lever is located on the right armrest. The
lever, when positioned to the left, actuates the control valve through hydraulic pilot pressure
to raise the boom. Positioning the lever to the right lowers the boom. Pushing the lever
forward will let out the main hoist rope and pulling the lever back reels the rope in. Moving
the lever in a diagonal direction actuates both functions.
When using fire extinguisher, conduct all extinguishing
operations from outside the cab and ventilate the cab
thoroughly prior to reentry. Fire extinguishers are
located in both the carrier and superstructure cabs.
Fire Extinguisher (9). The extinguisher is mounted under the front of the operator's seat.
The extinguisher is a BC rated dry-type fire extinguisher for emergency use.
TELE/CLAMSHELL Selector Switch (10). The switch is located on the right arm rest
behind the Boom LIFT/MAIN HOIST Control Lever (8).
In TELE position, the
Telescope/Clamshell Control Pedal (21) controls telescope function of boom. The
TELESCOPE ENGAGED Indicator (27) is lit. In CLAMSHELL position, the Telescope/
Clamshell Control Pedal (21) controls the clamshell and grapple hydraulic cylinder. The
CLAMSHELL/GRAPPLE ENGAGED Indicator (28) is lit.
HORN Button - Swing (11). Located on right side arm rest, behind the Boom LIFT/MAIN
HOIST Control Lever (8), press and hold pushbutton to sound a horn. Used by operator to
alert personnel in the area prior to swinging the boom.
Cab Dome Light (12). The light is located on the right rear corner of the cab roof to
illuminate the cab interior. The light is controlled by a switch on the light.
Brake Foot Pedal (13). The pedal is the second pedal from the right on the cab floor.
Depressing the pedal actuates an air valve to control application of the brakes.
Horn Button (14). It is a push-button-type switch located in the center of the steering
wheel. Depressing the horn button energizes a relay that in turn sounds the horn on the
Steering Wheel (15). It is a conventional automotive-type steering wheel used to control
rear wheels. Clockwise steers crane to right, counterclockwise steers crane to left when the
STEERING MODE CONTROL handle is in the superstructure position.
Swing Brake Pedal (16). The pedal is located on the left side of the cab under the front
console. The pedal is used to actuate the swing brake to slow or stop motion. Braking is
proportional to pedal depression. With the pedal not depressed and the swing brake release
valve engaged (SWING BRAKE ON/OFF Selector Switch in OFF position), hydraulic pressure
is applied to the brake release circuit, thereby, overcoming spring pressure and releasing the
brake. Depressing the pedal actuates the swing power brake valve to apply hydraulic
pressure to the brake actuation (service) circuit. This pressure (proportional to pedal
depression) aids the brake spring in overcoming the hydraulic pressure being applied to the
brake release circuit and applies the swing brake.