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Maintenance—Machine
KR46761,00013F6 -19-27OCT16-1/1
KR46761,00013F7 -19-26OCT16-1/1
Minimizing the Effect of Cold Weather on Diesel Engines
The engine in this machine is designed to operate
effectively in cold weather.
However, for effective starting and cold-weather operation,
a little extra care is necessary. The following information
outlines steps that can minimize the effect that cold
weather may have on starting and operation of an engine.
See an authorized Hitachi dealer for additional information
and local availability of cold-weather aids.
Use Winter Grade Fuel
When temperatures fall below 0°C (32°F), winter grade
fuel (No. 1-D in North America) is best suited for
cold-weather operation. Winter grade fuel has a lower
cloud point and a lower pour point.
Cloud point is the temperature at which wax begins to
form in the fuel. This wax causes fuel lters to plug. Pour
point is the lowest temperature at which movement of
the fuel is observed.
NOTE: On average, winter grade diesel fuel has a lower
Btu (heat content) rating. Using winter grade fuel
may reduce power and fuel efciency, but should not
cause any other engine performance effects. Check
the grade of fuel being used before troubleshooting
for low-power complaints in cold-weather operation.
Seasonal Viscosity Oil and Proper Coolant
Concentration
Use seasonal grade viscosity engine oil based on the
expected air temperature range between oil changes
and a proper concentration of low silicate antifreeze as
recommended. (See DIESEL ENGINE OIL and ENGINE
COOLANT requirements in this section.)
Diesel Fuel Flow Additive
Use John Deere fuel-protect diesel fuel conditioner (winter
formula), which contains anti-gel chemistry, or equivalent
fuel conditioner to treat non-winter grade fuel (No. 2-D
in North America) during the cold-weather season.
This generally extends operability to about 10°C (18°F)
below the fuel cloud point. For operability at even lower
temperatures, use winter grade fuel.
IMPORTANT: Treat fuel when outside temperature
drops below 0°C (32°F). For best results, use
with untreated fuel. Follow all recommended
instructions on label.
BioDiesel
When operating with biodiesel blends, wax formation
can occur at warmer temperatures. Use John Deere
fuel-protect diesel fuel conditioner (winter formula), at 5°C
(41°F) to treat biodiesel fuels during the cold-weather
season. Use only winter grade petroleum diesel fuel at
temperatures below -10°C (14°F).
Winterfronts
Use of fabric, cardboard, or solid winterfronts is
not recommended with this engine. Their use can
result in excessive engine coolant, oil, and charge air
temperatures. This can lead to reduced engine life, loss
of power, and poor fuel economy. Winterfronts may also
put abnormal stress on fan and fan drive components
potentially causing premature failures.
If winterfronts are used, they should never totally close
off the grill frontal area. Approximately 25% area in the
center of the grill should remain open at all times. At no
time should the air blockage device be applied directly
to the radiator core.
Diesel Exhaust Fluid (DEF) — Use in Selective Catalytic Reduction (SCR) Equipped Engines
Diesel exhaust uid (DEF) is a high purity liquid that is
injected into the exhaust system of engines equipped with
selective catalytic reduction (SCR) systems. Maintaining
the purity of DEF is important to avoid malfunctions in the
SCR system. Engines requiring DEF shall use a product
that meets the requirements for aqueous urea solution 32
(AUS 32) according to ISO 22241-1.
Use DEF that is certied by the American Petroleum
Institute (API) Diesel Exhaust Fluid Certication Program
or by the AdBlue™ Diesel Exhaust Fluid Certication
Program. Look for the API certication symbol or the
AdBlue™ name on the container.
In some cases, DEF is referred to by one or more of these
names:
•
Urea
•
Aqueous Urea Solution 32
•
AUS 32
•
AdBlue™
•
NOx Reduction Agent
•
Catalyst Solution
AdBlue is a trademark of VDA, the German Association
of the Automotive Industry.
3-1-4
112321
PN=182
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