214733 261 Revision A
5.5 System Maintenance Overviews
5.5.1 Diesel Exhaust Fluid (DEF) System
IMPORTANT:
If the windrower is going to be in storage for periods longer than six months, the DEF tank should be drained to avoid
damaging the tank. Refer to Draining the Diesel Exhaust Fluid (DEF) Tank, page 261 .
IMPORTANT:
If the windrower temperature is going to be below 0°C (32°F), do NOT fill the DEF tank to a full level. It should be less than
75% full. When freezing, the DEF fluid will expand by approximately seven percent.
NOTE:
For DEF fluid specifications, refer to 5.1 Recommended Fuel, Fluids, and Lubricants, page 247.
Draining the Diesel Exhaust Fluid (DEF) Tank
It is necessary to drain the DEF tank when the DEF is contaminated or if storing the windrower for a period greater than six
months.
WARNING
To avoid bodily injury or death from 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. Stop the engine and remove the key.
Figure 5.14: View from beneath Tank
2. Place a drain pan under the DEF tank (B). The drain pan
should be large enough to hold 29 liters (7.5 US gallons).
IMPORTANT:
Spilled DEF must be contained and absorbed by non-
combustible absorbent material like sand and then
shovelled to a suitable container for disposal. If spilled on
tank or any surface of the vehicle, rinse 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 the drain plug (A) from under the tank (B)
and drain.
4. Add some distilled water to the 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 the tank (B).
7. Refill DEF tank. Refer to Filling the Diesel Exhaust Fluid
(DEF) Tank, page 262.
NOTE:
Do NOT refill if storing for six months or longer.
MAINTENANCE AND SERVICING
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