DIGGER DERRICK
1-2
463280 - 9/14 Terex South Dakota, Inc. Digger Derrick
OPERATION GUIDELINES
CAB CONTROL OPERATION
MASTER CONTROL
The master control is located in the cab of the vehicle. The master switch is used to energize the engine
stop/start system and the throttle control options. The same switch that activates the PTO may also function
as the Master Control. When the indicator light is lit, the switch is energizing these systems. If the unit is not
equipped with engine stop/start, two-speed throttle or 12V hydraulic power, it may not have a master control,
only a PTO switch. The switches will vary depending on vehicles and options.
POWER TAKE-OFF (OPTIONAL)
The power take-off (PTO) is a gearbox used to transmit power from the vehicle transmission to the hydraulic
pump, which provides hydraulic oil for the Digger Derrick functions. The power take-off control can be a
switch on the dash, for electric control systems, or a “push-pull” knob, (usually mounted on the cab floor). An
indicator light will show that the PTO is engaged.
To engage the power take-off properly, refer to the PTO manufacturer's operating instructions and be sure
the manufacturer's operating decals are posted in the cab with the PTO controls.
NOTE: Each installation may be unique depending on configuration and options.
CAB CONTROL FUNCTIONS
Driving with the PTO engaged may damage both the pump and the PTO.
Master Power Push to activate the remote electrical systems. A
light indicates when the system is active. This
light may be separate or built into the switch
panel or display.
Push again to deactivate the remote electrical
systems. The indicator light will turn off.
Master Power may also be the PTO switch if a
separate PTO switch is not installed.
PTO Push to engage the PTO. A light indicates when
the PTO is engaged. This light may be separate
or built into the switch panel or display.
Warning Light Controls vehicle warning lights such as strobe
lights.
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