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245
Revision A
5.5
System Maintenance Overviews
5.5.1
Diesel Exhaust Fluid System
The diesel exhaust fluid (DEF) system injects DEF into the windrower
’
s engine exhaust system. This fluid reacts with the
exhaust gases over a catalyst, thereby reducing the damage that the engine
’
s emissions do to the environment. The
Operator may need to drain the DEF tank if the windrower will not be operated for a long period of time. The Operator will
also need to ensure that the filters in the DEF system are changed according to the intervals specified in the maintenance
schedule.
IMPORTANT:
If the windrower will be in storage for longer than six months, the diesel exhaust fluid (DEF) tank should be drained to
prevent damage to the tank. For instructions, refer to
Draining Diesel Exhaust Fluid Tank, page 245
.
IMPORTANT:
If the windrower will be operated when the ambient temperature is below 0°C (32°F), do
NOT
fill the DEF tank to more
than 75% of its capacity. When the ambient temperature is below freezing, DEF will expand in volume by
approximately 7%.
NOTE:
For DEF specifications, refer to this manual
’
s inside back cover.
Draining Diesel Exhaust Fluid Tank
It is necessary to drain the diesel exhaust fluid (DEF) tank when the DEF is contaminated or if storing the windrower for a
period greater than 6 months.
DANGER
To prevent bodily injury or death from the unexpected startup of the machine, always stop the engine and remove the
key from the ignition before leaving the operator
’
s seat for any reason.
1.
Shut down the engine, and remove the key from the ignition.
1015719
A
B
Figure 5.14: View from beneath DEF Tank
2.
Place a drain pan under DEF tank (B). The drain pan should
be large enough to hold 28 liters (7.5 U.S. gallons).
IMPORTANT:
Spilled DEF must be contained and absorbed by non-
combustible absorbent material like sand and then
shovelled into a suitable container for disposal. If DEF is
spilled on the tank or any surface of the vehicle, rinse the
area thoroughly with water as DEF is corrosive.
CAUTION
Avoid contact with eyes. In case of contact, rinse immediately
with water for 15 minutes.
3.
Remove drain plug (A) from under tank (B) and drain the
DEF tank.
4.
Add some distilled water to tank (B) to flush out remaining
contaminants.
5.
Drain the distilled water that was used to clean the tank.
6.
Reinstall drain plug (A) into tank (B).
