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Operation Section (D6T LGP (OEM)) WEBM1000
Engine Starting
At temperatures below 23C10F), consult your
Caterpillar dealer. For information on starting the
engine in cold weather, refer to the Operation and
Maintenance Manual, SEBU5898, “Cold Weather
Recommendations for all Caterpillar Machines”.
Subsequent Engine Starting
Procedures
NOTICE
Keep engine speed low until the engine oil pressure
reg
isters on the gauge or the engine oil indicator light
goes out.
If it does not register or the light does not go out
wit
hin te
n seconds, stop the engine and investigate
the cause before starting again. Failure to do so, can
cause engine damage.
1. Allow a cold engine to warm up at low idle for at
least 5 minutes.
2. You can begin to operate the machine with a
re
duced load.
3. When the oil pressure reaches the normal
op
erating range and the temperature gauge
begins to move, you may operate the machine at
full load.
4. Mo
nitor lights and gauges (4) frequently during
oper
ation.
5. Check oil levels in
the power train, the engine,
and the hydraulic systems when the oil is at
operating temperature. Maintain the oil levels to
the FULL marks.
Engine and Machine Warm-Up
NOTICE
Keep engine speed low until the engine oil pressure
reg
isters on the gauge or the engine oil pressure
indicator light goes out. If it does not register or the
light does not go out within ten seconds, stop the
engine and investigate the cause before starting
again. Failure to do so, can cause engine damage.
NOTICE
Always run the engine at low idle for at least ten
minut
es before performing any other operations in
cold conditions to protect your engine and to protect
your transmission.
The engine may automatically change speeds when
the machine is stationary and idling in cold ambient
temperature for an extended time. This action is to:
• Maintain desired coolant temperature.
• Maintain desired operation of engine systems.
• Maintain desired operation of the regeneration
system.
During extended idling in c
o
ld ambient conditions,
engine speed may operate between 1000 rpm and
1600 rpm. Operation at 1600 rpm is minimal and will
only last for up to 20 minutes. The high exhaust
system temperature indicator may also illuminate
during extended idling conditions to signal that a low
speed regeneration is in progress. A regeneration
done in cold ambient extended idling conditions
may activate below 30% soot level. A regeneration
done in cold ambient extended idling conditions will
typically last for 5-10 minutes.
After the engine has been started, allow the
m
on
itoring system to complete the self test.
1. Allow a cold engine to warm up at LOW IDLE for
at lea
st 5 minutes. To help the hydraulic
components to warm up faster, engage the
attachment controls and disengage the
attachment controls.
2. Y
ou can begin to operate the machine with a
re
duced load.
3. When the engine coolant temperature reaches
the n
ormal operating range and no faults are
present, you may operate the machine at full
load.
4. Lo
ok at the indicators and the gauges frequently
durin
g operation. Refer to Operation and
Maintenance Manual, “Monitoring System”.
5. Check oil levels in the power
t
rain, the engine,
and the hydraulic systems when the oil is at
operating temperature. Maintain the oil levels to
the FULL marks.
The hydraulic oil will warm up faster, if the dozer
bla
de cont
rol is held in the CLOSED position. Hold
the dozer in the CLOSED position for short periods
of 10 seconds or less. This action will allow the
hydraulic oil to reach relief pressure, which causes
the hydraulic oil to warm up more rapidly.
Cycle all controls in order to allow
wa
rm hydraulic oil
to circulate through all hydraulic cylinders and
through all hydraulic lines.
Idling
When you idle the engine in order to warm up the
engine, observe the following recommendations: