Steering Wheel And Controls; Horn Button; Telescope Lock Ring; Turn Signal / Headlight Dimmer - Komatsu 930E-2 Shop Manual

STEERING WHEEL AND CONTROLS

The steering wheel (1, Figure 5-3) will telescope "in"
and "out" and adjust through a tilt angle to provide a
comfortable wheel position for most operators.

HORN BUTTON

The horn (2, Figure 5-3) is actuated by pushing the
button in the center of the steering wheel. Operation
of the horn should be verified before moving the truck.
Observe all local safety rules regarding the use of the
horn as a warning signal device before starting engine
and moving the vehicle.

TELESCOPE LOCK RING

The Telescope Lock Ring (3, Figure 5-3) around the
horn button locks/unlocks the telescoping function of
the steering column. Rotating the ring 90° - 180°
counterclockwise (L.H. rotation), releases the column
to move "in" or "out". Rotating the ring clockwise (R.H.
rotation), locks the column in the adjusted position.
TILT WHEEL LEVER
Adjust the tilt of the steering wheel by pulling the tilt
adjustment lever (4, Figure 5-3) toward the steering
wheel and moving the wheel to the desired angle.
Releasing the lever will lock the wheel in the desired
location.

TURN SIGNAL / HEADLIGHT DIMMER

The Turn Signal Lever (5, Figure 5- 3) is used to
activate turn signal lights and to select either high or
low headlight beams.
Move the lever upward to signal a turn
to the right.
An indicator in the top, center of the instrument
panel will illuminate to indicate turn direction se-
lected.
Refer to INSTRUMENT PANEL & INDICATOR
LIGHTS.
Move the lever downward to signal a
turn to the left.
Moving the lever toward the steering wheel
changes Headlight beam.
When high beams are selected, the
indicator in the top, center of the instru-
ment panel will illuminate.
N05044
FIGURE 5-3. STEERING WHEEL AND CONTROLS

DYNAMIC RETARDING

Dynamic Retarding is a braking torque (not a brake)
produced through electrical generation by the wheel-
motors when the truck motion (momentum) is the
propelling force.
For normal truck operation, Dynamic Retarding
should be used to slow and control the speed of
the truck.
Dynamic retarding is available in "FORWARD/RE-
VERSE" at all truck speeds above 0 mph/kph; how-
ever, as the truck speed slows below 3 mph (4.8 kph),
the available retarding force may not be effective. Use
the service brakes to bring the truck to a complete stop.
Dynamic retarding will not hold a stationary truck on
an incline; use the parking brake or wheel brake lock
for this purpose.
Dynamic retarding is available in NEUTRAL only
when truck speed is above 3 mph (4.8 kph).
When Dynamic Retarding is in operation, the engine
RPM will automatically go to an advance RPM retard
speed setting. This RPM will vary depending on the
temperature of several components in the electrical
system.
Dynamic Retarding will be applied automatically, if
the speed of the truck obtains the maximum speed
setting programmed in the control system software.
Operator Cab Controls N5-3