CONTROLS AND OPERATING PROCEDURES OPERATOR MANUAL NTC55
3-4 Published 9-26-2018 Control # 646-02
Air Shift Control
The PTO is engaged when the switch is moved to apply air to
PTO and disengaged when switch is in off position. The truck
gear shift lever must be in neutral and clutch depressed
when switch is moved. The transmission selector lever must
be returned to “N” for stationary vehicle operation. The
power take-off may be disengaged while in any transmission
range provided that the load has first been removed from the
PTO.
Electric Shift Control
Full torque electric shift PTO's are controlled by a switch. To
operate, disengage the clutch, shift to fourth or fifth gear, and
the move the switch down to engage the PTO or up to
disengage the PTO. Return the gear shift to neutral and
engage the clutch.
Power Shift Control
If the vehicle is equipped with an automatic transmission, the
power take-off must be engaged with the engine at idle. See
transmission manufacturer’s instructions for special
procedures.
Park Brake
The truck brake must be firmly set before leaving cab to
begin operation. If the ground surface is icy or slick or is
sloped, you may be required to help immobilize the truck with
wheel chocks.
Engine Speed Governor
Some diesel engines are equipped with a variable speed
governor which overrides the engine speed governor. If
equipped, two knobs in the cab select between crane
operation and normal driving operation.
Neutral Start/Safety Switch
The truck must be equipped with a neutral/start safety switch
on transmission. Check occasionally to ensure it is working
correctly and repair if it is not.
OUTRIGGER CONTROLS
The outriggers can be operated from three locations,
including the keypad controller located on the (Figure 3-1)
crane cab console and two ground station control panels
(Figure 3-3) located on the left and right sides of the carrier
frame. Each controller contains the controls for extending
and retracting the outrigger beams, for raising and lowering
the outrigger stabilizer (jack) cylinders and for raising and
lowering the single front outrigger (SFO) - if equipped.
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