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PAGE 48 — DCA85USJ2 60 HZ GENERATOR • OPERATION AND PARTS MANUAL — REV. #1 (03/22/11)
COOLANT (ANTIFREEZE/SUMMER COOLANT/
WATER)
John Deere recommends John Deere 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 3.70 gal (14 liters)
Reserve Tank 2 quarts (1.9 liters)
Table 13. Anti-Freeze Operating Temperatures
Vol %
Anti-
Freeze
Freezing Point Boiling Point
°C °F °C °F
50 -37 -34 108 226
NOTICE
When the antifreeze is mixed with water, the antifreeze
mixing ratio must be less than 50%.
CLEANING THE RADIATOR
The engine may overheat if the radiator fi ns become
overloaded with dust or debris. Periodically clean the
radiator fi ns with compressed air. Cleaning inside the
machine is dangerous, so clean only with the engine turned
off and the negative battery terminal disconnected.
AIR CLEANER
Periodic cleaning/replacement is necessary. Inspect it
in accordance with the John Deere Engine Owner’s
Manual.
FAN BELT TENSION
A slack fan belt may contribute to overheating, or to
insuffi cient charging of the battery. Inspect the fan belt for
damage and wear and adjust it in accordance with the John
Deere Engine Owner’s Manual.
The fan belt tension is proper if the fan belt bends 10 to 15
mm (Figure 35) when depressed with the thumb as shown
below.
Figure 35. Fan Belt Tension
CAUTION
NEVER place hands near the belts or fan
while the generator set is running.
INSPECTION/SETUP