Service Manual User Manual

Section 10
10-54
Model 3606 • Origin 10/99
Operators Display Panel Test
Check the following as the key is switched into the "RUN"
position (Fig. 10– 51):
Figure 10– 51. Ignition key switch positions.
1. All lights must illuminate for a minimum of 3 seconds.
2. An audible alarm must sound for a minimum of 3
seconds.
3. "Seat belt" light and “Read Manual” light and must
remain on for 5 to 7 seconds, with operator seated.
4. "Seat belt" light and "Read manual" light must
illuminate when operator is removed from seat.
5. Warning lights and alarm must be OFF for an
additional 15 to 20 seconds.
6. Engine oil pressure light and alarm will turn ON in 15
seconds if engine is not running.
7. One of three travel direction lights (F, N, or R) must
always remain ON.
8. 1 of 4 gear selection lights must always remain ON
"1, 2, 3, 4" (
4-speed transmission only
).
OR
1 of 3 gear selection lights must always remain on
"1, 2, 3" (
3-speed transmission only
).
9. 1 of 3 steering mode lights must always remain ON.
10. The appropriate fuel level indicator lights must always
remain ON.
Note: 4 green bars = a full tank; 1 green bar = 1/4 tank,
and at 1/8 tank, no green bars illuminate and the fuel dis-
pensing pump symbol illuminates in orange.
10.8.3 Switches and Solenoids
a. Ignition Key Switch
The ignition key switch (Fig. 10– 52) is located on the
lower left side of the dash. It is a key-operated switch
used to start the engine and to run the vehicle. Only on
Perkins engines equipped with the optional cold start fea-
ture (refer to
Thermo-Start Plug
in this section), the igni-
tion switch preheat function will allow the thermo-start
plug to ignite the air/fuel mixture in the intake manifold,
making the engine easier to start in cold weather.
Figure 10– 52. Ignition key switch location.
When the key is inserted into the ignition key switch, the
switch can be turned clockwise from the OFF position
(Fig. 10– 51) to the RUN, PREHEAT (Perkins-only
option), and START positions. The PREHEAT and the
START positions are spring-loaded to return the switch to
the RUN position; these two switch positions must be
manually held in place for cold-weather starting (Perkins-
only option) and for normal starting.
OFF Position
The entire electrical system is shut down, with power at
the ignition switch and the starter solenoid only.
RUN Position
All controls and indicators are operable.
PREHEAT position (Perkins-only option)
Preheats air in the induction manifold for cold-weather
starting (refer to Thermo-Start Plug in this section).
When starting in cold weather, momentarily hold the key
in the PREHEAT position before turning it to the START
position.
START Position
When the park brake switch is ON and the transmission
is in NEUTRAL (N), turning the ignition switch to the
START position engages the starter to start the engine.
OF0390
OFF
RUN
PREHEAT
START
OS0091
Ignition
Key Switch