Service Manual User Manual

Section 10
10-50
Model 3606 • Origin 10/99
2. Engine Coolant Temperature Warning Indicator
This indicator (item 2, Fig. 10– 41) is illuminated when the
engine coolant temperature is above 210° F (85° C). An
audible alarm will sound, and the engine must be shut
down as soon as practical to help avoid engine damage.
3. Transmission Temperature Warning Indicator
This indicator (item 3, Fig. 10– 41) illuminates when the
transmission fluid temperature exceeds 250° F (107° C).
An audible alarm will also sound, and the vehicle should
be stopped and the engine allowed to idle at high idle for
five minutes. If the light and alarm do not cease after five
minutes, the engine must be shut down to help avoid
transmission damage.
4. Hydraulic Oil Temperature Warning Indicator
This warning light (item 4, Fig. 10– 41) will activate when
the hydraulic oil temperature is above 195° F (76° C).
The vehicle should be stopped and the engine allowed to
idle at high idle for five minutes. If the light continues to
illuminate after five minutes, the engine must be shut
down to help avoid damage in the hydraulic system.
5. Hydraulic Oil Filter Restriction Warning Indicator
This warning light (item 5, Fig. 10– 41) will activate when
a restricted hydraulic oil system filter is detected. The
vehicle should be stopped and the engine allowed to idle
at high idle for five minutes. If the light remains illumi-
nated or begins to flicker on and off at high idle, replace
the hydraulic oil filter (see
Section 9 Hydraulic System
for
further information).
6. Engine Air Filter Restriction Warning Indicator
This warning light (item 6, Fig. 10– 41) will activate when
a restricted engine air filter is detected. The vehicle
should be stopped and the engine allowed to idle at high
idle for five minutes. If the light remains illuminated or
begins to flicker on and off at high idle, replace the
engine air filter (see
Section 8A Perkins Engine
or
Sec-
tion 8B Cummins Engine
for information on replacing the
air filter).
7. Alternator Charging Warning Indicator
This light (item 7, Fig. 10– 41) illuminates when the charg-
ing system is not working properly. Check and service the
alternator and battery as required.
8. Engine Oil Pressure Warning Indicator
This indicator (item 8, Fig. 10– 41) illuminates and an
audible alarm sounds after 15 seconds if the engine is
not started. This is normal. When the ignition key switch
is turned to the OFF position, the indicator is reset.
Should the light and alarm begin during engine opera-
tion, the engine oil pressure is too low. The engine must
be shut down as soon as practical to help avoid engine
damage.
c. Back-Up Alarm
The back-up alarm (Fig. 10– 43) is located at the rear of
the vehicle, under the rear cover, mounted on the top left
side of the frame.
Figure 10– 43. Back-up alarm location.
When the transmission shift control switch (travel select
lever) is shifted to the reverse position, the back-up alarm
will automatically sound. Place the travel select lever in
reverse to test the back-up alarm. The back-up alarm
must not sound when the travel select lever is in
NEUTRAL (N) or FORWARD (F). Also, with the ignition
key switch in the RUN position, the back-up alarm will
sound when the travel select lever is shifted into the
REVERSE (R) position.
The back-up alarm is energized via current from the
transmission shift control switch, part of the travel select
lever mounted within the steering column. See the appro-
priate wiring schematic and diagram in this section to
help understand the back-up alarm circuit. See
Section
4.2.4 Controls
for information on removing and replacing
the transmission shift control switch.
MS1800
Back-up
Alarm
Mounting
Hardware