SECTION 3
OPERATION
3-11.
DETROIT DIESEL EMERGENCY ENGINE
3-16. WATER SPRAY SYSTEM OPERATION.
STOP (see figures 3-2 and 3-3).
3-17. To activate the water spray system, push
C A U T I O N : The EMERGENCY STOP control
the WATER SPRAY SWITCH to the "on"
should be used only in the event of
position. This will produce a pressurized water
serious engine malfunction.
spray through nozzles onto the tires.
3-11.
A manually operated EMERGENCY
3-16.
COCO MATS (see figure 3-4).
ENGINE STOP CONTROL is mounted on the
3-19. The coco mats can be positioned off the
Instrument panel to shutdown the engine in the
tires when operating conditions are such that
event of a serious engine malfunction. If the
e n g i n e continues to run after the ENGINE
they are not needed.
S H U T - O F F has been set at "stop", or if the
3-20. The coco mats will lift in sections. Lift
engine overspeeds, the shutdown device will
up on each section and, using the hook
stop the engine by cutting off the air supply.
provided, place the hook under the end of the
3-13. The EMERGENCY ENGINE STOP con-
coco mat. The coco mats will now remain off
sists of an air shut-off valve mounted in the
the tires.
engine air inlet housing. The shut-off valve is
TIRE INFLATION SYSTEM OPERATION.
3-21.
r e t a i n e d in the open position by a latch. A
cable connected to the EMERGENCY ENGINE
3-22. The tire inflation system is installed only
STOP CONTROL is used to remotely trip the
Detroit
o n units equipped with
latch, closing the shut-off valve.
diesel engines. With this system the operator
3-14. RESETTING EMERGENCY ENGINE
c a n vary tire pressure while the unit is in
motion, thereby varying ground contact pres-
STOP.
sure. Refer to Section 12 for gauge setting,
3-15. The emergency engine stop must be
ballasting and ground contact pressure ratings.
manually reset before the engine can be
restarted. To reset the emergency stop, push
3-23. Control of the pressure gauge is
the cam-pin handle (located on the engine air
maintained by rotating the valve wheel. Valve
I n l e t housing) downward. This will open the
wheel and gauge are mounted on the control
s h u t - o f f valve. Then push the EMERGENCY
panel for easy accessibility.
S T O P Control lever against the instrument
panel.
3-24. TOWING THE UNIT.
3-25. Before towing a unit that has malfunc-
tioned ensure that the governor-direction
control lever is in "neutral" and the park brake
has been released.
NOTE: Tow the unit only when necessary and
at speeds of one to two miles per hour
(1.61-3.22 kg/h) for as short a distance
as possible.
FIGURE 3-4. COCO MATS.
FIGURE 3-3. EMERGENCY STOP/AIR INTAKE
HOUSING.
3-6.
