PAGE 38 — DCA300SSJU4F2 60 HZ GENERATOR • OPERATION MANUAL — REV. #0 (06/26/18)
DEF Refilling
Diesel exhaust fluid
is an aqueous solution made with 32.5%
high puirty
urea
carbamide) and 67.5
deionized water
. DEF
is used as a consumable in
selective catalytic reduction
(SCR) in order to lower NO
x
concentration from diesel exhaust
emissions.
1. Make sure engine is
OFF
.
2. Open the enclosure door and remove the filler cap from
the DEF tank (Figure 41).
3. Upon initial start up,
completely fill
the DEF tank with
DEF fluid.
DO NOT
overfill.
DEF Refilling (Continuous Operation)
It is recommended to
shut down the engine
prior to refilling
the DEF tank. However, in special applications where shutdown
is not possible, it is recommended to
ONLY
refill the DEF tank
when the fluid level has been consumed down to 50%.
The DEF level sending unit requires a gradual DEF level
decrease during continuous operation to validate proper
operation. Failure of this sensor to report the decrease could
result in an engine shutdown. A engine service technician
would be required to remedy the shutdown.
Figure 41. DEF Tank Filling
NOTICE
ONLY
fill the DEF tank with
diesel exhaust fluid
. Any
other type of fluid may cause severe engine damage.
CAP
EXHAUST FLUID ONLY
Filling this tank with
anything other than
DIESEL EXHAUST FLUID
may result in severe
engine damage.
M94110000
No Diesel
D
CAUTION
REAR VIEW
DEF TANK
COOLANT (ANTIFREEZE/SUMMER COOLANT/
WATER)
John Deere recommends Cool-Gard II
TM
antifreeze/summer
coolant for use in their engines, which can be purchased in
concentrate (and mixed with 50% demineralized water) or
pre-diluted. See the
John Deere Engine Owner’s Manual
for further details.
Day-to-day addition of coolant is done from the recovery
tank. When adding coolant to the radiator,
DO NOT
remove
the radiator cap until the unit has completely cooled. See
Table 12 for engine, radiator, and recovery tank coolant
capacities. Make sure the coolant level in the recovery tank
is always between the “H” and the “L” markings.
Operation in Freezing Weather
When operating in freezing weather, be certain the proper
amount of antifreeze (Table 13) has been added.
WARNING
If adding coolant/antifreeze mix to the
radiator,
DO NOT
remove the radiator cap
until the unit has completely cooled. The
possibility of
hot!
coolant exists which can
cause severe burns.
Table 12. Coolant Capacity
Engine and Radiator
17.7gal (67 liters)
Reserve Tank
N/A
Table 13. Coolant Capacity
Climate
Outside
Temperature
Longlife Coolant
Concentration
Warm
10°F (-12°C) or
Above
30%
Cold
-22°F (30°C) or
Above
50%
NOTICE
When the antifreeze is mixed with water, the antifreeze
mixing ratio
must be
less than 50%.
INSPECTION/SETUP
