Retard Speed Control (Rsc) Switch - Komatsu 730E Operation & Maintenance Manual

Operation - Section 32
Page 32-8
Retard Speed Control (RSC) Off / On Switch
Retard speed control switch (6,
Figure 32-7) turns the system
off or on. Push the knob in to
turn off and pull the knob out to
turn the system on.
Override Switch
Override switch
(7, Figure 32-7)
is spring-loaded
to the OFF posi-
tion. When
pushed in and
held, this switch may be used for several functions.
1. The override switch permits the operator to
move the truck forward when the selector
switch is in FORWARD, the dump body is
raised, and the brakes are released.
Use of the override switch for this purpose is
intended for emergency situations only.
2. If the operator stops the truck on an uphill
incline, the override switch can be used to set
up forward propulsion while the brakes are
applied. As soon as forward propulsion is felt,
release the brakes and as the truck begins to
move forward, release the override switch.
3. The override switch deactivates the retard
pedal function when speed of truck is below 4.8
kph (3 mph).
4. The override switch is also used to reset an
electric system fault when indicated by the red
warning light Refer to Instrument Panel And
Indicator Lights, Overhead Warning / Status
panel.
"IN" "OFF"
"OUT" "ON"
Operator Cab and Controls
Engine Shutdown Switch
Engine shutdown switch (8, Figure 32-7)
is used to turn the engine off. Pull the
switch up to stop the engine. Push the
switch back down to enable engine oper-
ation.
SWITCH UP
ENGINE OFF
Use this switch to turn off the engine if the key switch
should fail to operate, or to stop the engine without
turning off the 24 vdc electrical circuits.
A ground level engine shutdown switch is also
located at the right front corner of the truck.
Window Control Switches
Window control switch (9, Figure 32-7) is spring-
loaded to the OFF position. Pushing the front of the
switch raises the cab window. Pushing the rear of the
switch lowers the window.
Ash Tray
Ash tray (10, Figure 32-7) is used for extinguishing
and depositing smoking materials. DO NOT use for
flammable materials, such as paper wrappers.
Ensure that all fire ash is extinguished!
Lighter
Lighter (10, Figure 32-7) may be used for lighting
cigars/cigarettes.
Always use CAUTION with smoking materials!
This socket may also be used for a 12 VDC power
supply.
Passenger Seat
Passenger seat (11) is mounted on top of the right
hand portion of the center console structure.
The area beneath the passenger seat provides a
cabinet for various 24 vdc electrical components.
Consult the service manual for service involving any
of these components.
OM3223
SWITCH DOWN
ENGINE ON