LeeBoy 8608 - Start-Up Procedure; Stopping the Engine; Diesel Exhaust Fluid (DEF)

START-UP PROCEDURE
DO NOT leave the operator station
unattended while the paver is in gear or in motion.
Operator must return joysticks to the neutral position
and turn the RUN/STOP switch to the STOP position
before leaving the operator platform.
Verify there are no people, obstacles
or other equipment in the machine’s path before
starting the engine.
1. Clear auger and conveyors before starting engine.
2. Position joysticks to NEUTRAL (center).
3. Insert key into the ignition and turn clockwise to
the START position. The “Wait to Start” light on the
control panel will illuminate.
4. Wait for the “Wait to Start” light to turn off, then turn
key to the RUN position to start.
DO NOT hold the starter longer than
10 - 15 seconds. If the engine does not start, allow
the starter to cool two or three minutes.
Using starting additives, such as
ether, is not recommended as severe engine damage
can occur.
5. Allow engine to warm up a few minutes before
moving paver for more efcient operation. In cold
weather let hydraulic oil warm to 60°F before
moving.
6. Set engine RPM using the throttle up and down
buttons on the Engine Screen on the digital display
screen.
STOPPING THE ENGINESTOPPING THE ENGINE
1. Move joysticks to the NEUTRAL position.
2. Reduce engine to 1300 RPMs
3. Turn ignition key on instrument panel counterclock-
wise to the OFF position and remove key.
NOTE: If for any reason the engine does not shut
down when key is turned off, push in the E-Stop
button.
DIESEL EXHAUST FLUID (DEF)
DEF is a mixture of pure urea and de-ionized water that
is injected into the exhaust stream by the SCR system.
DEF is a vital element in engine operation and perfor-
mance. It is extremely important to keep the DEF tank
lled, and DEF uid stored properly, to prevent costly
repair. (See Pages 5-22 to 5-23 for detailed informa-
tion.) The DEF tank is located inside the right engine
access panel. Keeping the DEF tank full on a daily basis
will prevent costly repairs and operational down time.
DEF Purge: The SCR system will automatically purge
DEF after shutting down the engine. You will hear the
pumping noise as the system circulates DEF to cool
the DEF injector, then the pump reverses to return DEF
back to the tank. Always allow this purging process to
nish to prevent damage to the injector and other SCR
components.
NEVER disconnect battery until the
purge cycle has completed to prevent serious
damage to components in the SCR system.
If the DEF tank level runs low (below 15 percent) during
operation, DEF warning messages will appear on the
PV485 digital display screens. If the level drops to 5
percent (empty), urgent warning messages pop up.
Engine torque will be reduced 50 percent and engine
speed will be reduced 40 percent after 45 minutes.
If the operator continues to ignore the warning and the
DEF tank is still not relled, another urgent warning mes-
sage pops up. At this point, the engine will de-rate and
only idle.
In either of these conditions, relling the DEF tank will
restore engine performance.
If the DEF tank level has fallen to 0 percent, there is no
ability for DEF injection into the exhaust system (nor can
the system perform the regeneration process described
on Pages 4-21 to 4-23. The DEF injector may now be
damaged and require replacement from your autho-
rized dealer.
DEF Thaw Control Mode: Sensors on the DEF tank
also detect the ambient air temperature within seconds
of starting the engine. If the DEF is frozen, the SCR
system automatically starts the Thaw Control Mode and
turns on the DEF pump, tank and tube heaters. Engine
maximum torque may be limited to protect the DEF
injector.
Operation
8608 Commercial Paver4-4