OPERATING CONTROLS AND INDICATORS TMS9000-2 OPERATOR MANUAL
3-12 Published 02-21-2019, Control # 611-05
During cleaning it is possible for the engine exhaust to reach
temperatures exceeding 1200°F. The HEST indicator will
illuminate red to warn the operator of when temperatures
reach 640°C (1184°F) and will stay on until the temperature
falls below 625°C (1157°F).
For more information on the cleaning process, refer to
Exhaust System Cleaning, page 3-12
Engine Temperature Indicator
The engine temperature indicator (27) is located in the
temperature gauge. The indicator illuminates red when the
cooling system water temperature reaches 107°C (225°F).
This indicator is controlled by a multiplexed message from
the engine ECM.
Cruise Control
The cruise control indicator (28) is located in the tachometer.
The indicator illuminates when the cruise control system is
active.
NOTE: Cruise control is not operational below 56 km/h (35
mph)
Engine Coolant Temperature Gauge
The engine coolant temperature (TEMP) gauge (29) is
located on the lower left of the gauge cluster. The gauge
indicates the engine coolant temperature on a scale from
cold (C) to hot (H). The gauge is controlled by a multiplexed
message from the engine ECM.
Down Button
The down button (30) is used to scroll down through the
screens on the LCD display.
Up Button
The up button (31) is used to scroll up through the screens
on the LCD display.
Tachometer
The tachometer (32) is located on the left side of the gauge
cluster. The tachometer is calibrated in RPM x 100 with a
range of zero (0) to 35. The gauge is controlled by a
multiplexed message from the engine ECM.
Exhaust System Cleaning
The Exhaust System Cleaning Needed Indicator (33) is
located in the tachometer. This indicator illuminates amber
when the exhaust system is in need of cleaning.
The indicator will be lit continuously during the early stages
of required cleaning. If this condition continues, the lamp will
begin to flash and a slight engine derate will occur.
If this condition continues further, the Engine Warning light
(20) will illuminate in addition to the Cleaning indicator (33)
and a severe engine derate will occur.
The only way in which either of these conditions can occur is
if cleaning has been inhibited or a manual cleaning was
interrupted. Refer to Exhaust System Cleaning Initiate
Switch, page 3-7, for more detail on these.
The cleaning process can take place in three different
modes:
Passive: the exhaust is hot enough during normal working
operation to burn off any hydrocarbon (soot) accumulation.
Active: Active cleaning occurs when there is not sufficient
heat in the exhaust to perform the cleaning operation when it
is required. Exhaust temperatures are raised by the system
sufficiently high to enable a cleaning to occur. This is all done
without any operator intervention.
Manual: Manual or stationary, cleaning is the same as active
cleaning but takes place while the equipment is not being
operated. It offers the equipment operator the option, if
needed, of performing cleaning outside the normal duty
cycle. When the Cleaning Switch (6, (Figure 3-4)) is
momentarily placed in the manual cleaning position, manual
cleaning is initiated.
LCD Display
The LCD display (34) includes the following:
• Diesel Exhaust Fluid (DEF) percent/gauge
• vehicle speed
• transmission gear (automatic transmission only)
• battery voltage level
• depending on which screen is active
- odometer
- engine hours
- reset trip odometer A
- reset trip odometer B
- units of measure
WARNING
Extreme Heat Hazard!
During exhaust system cleaning, exhaust temperatures
may reach 800°C (1500°F) which is hot enough to ignite
or melt common materials. Do not park the vehicle near
combustible materials and keep all materials at least
0.6 m (2 ft) away from the exhaust outlet.
Use caution near the exhaust tailpipe as it will also
become very hot.
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