6
Seat switch is inside the seat and is open if the
operator is not on the seat. The seat switch sends
a signal to the control card for operation of the
SCR controller and the power steering.
If the lift truck has a seat brake, the seat switch
sends a signal to the seat brake solenoid, which
is mounted to the front of the cowl. The sole-
noid operates the seat brake linkage and applies
the parking brake if the operator leaves the lift
truck without applying the parking brake.
Parking brake switch operates if the parking
brake is applied. The parking brake switch is
fastened near the linkage for applying the park-
ing brake. The switch sends a signal to the con-
trol card of the instrument panel to illuminate
the parking brake indicator.
The parking brake switch and the control card
of the instrument panel are also used to operate
an alarm. The alarm sounds if the operator
leaves the seat of the lift truck when the key is in
the ON position and the parking brake is not ap-
plied.
Direction control switches in the Monotrol ped-
al or steering column send battery voltage to the
control card to close the forward or reverse con-
tactors.
Brake fluid switch sends voltage to the indica-
tor light in the instrument panel when the fluid
in the brake master cylinder is low.
Optional motor temperature switches send volt-
age to the indicator light in the instrument panel
when either the lift pump or the traction motor
is too hot.
Optional brush wear indicators send voltage to
the indicator light in the instrument panel when
the brushes of either the lift pump or traction
motors are worn.
Rocker switches for lights control all the op-
tional lights on the lift truck.
The standard rear lights on the legs of the over-
head guard are similar to automobile rear lights.
The stop lights come on when the brake pedal
is depressed. The reverse lights come on when
traveling in reverse. If there are also driving
lights installed, the tail lights come on with the
driving lights. A flashing light at the top of the
overhead guard and the reverse alarm are op-
tional.
•The horn switch at the center of the steering
wheel operates the horn located under the cowl
cover.
REPLACEMENT
WARNING
ALWAYS disconnect the battery and remove the key
before replacing components.
The capacitor in the SCR controller can hold an
electrical charge after the battery is disconnected. To
prevent electrical shock and injury, discharge the
capacitor before inspecting or repairing any
component in the rear compartment. Wear safety
glasses. Make certain the battery has been
disconnected. Use a screwdriver or jumper wire to
discharge capacitors C1. Block the drive wheels.
NOTE: None of the electrical components of this sec-
tion can be repaired. All bad components must be re-
placed.
INSTRUMENT PANEL COMPONENTS
NOTE: The only replaceable parts of these instru-
ment panels are the O-ring seal, key switch and the wires
to the switch.
Instrument Panel Assembly
Each of the two instrument panel assemblies, standard
and premium, can be replaced as a unit.
Follow this procedure to replace an instrument panel:
1. Disconnect the battery and remove the key.
2. Remove the front steering column cover with the
instrument panel assembly attached. Carefully discon-
nect the 18 pin connector, the key switch wires and, on
the standard panel, the two pin connector from inside the
column cover.
3. Remove the four screws that fasten the instrument
panel to the column cover.
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