SECTION 9 –
MAINTENANCE AND STORAGE
9-6
Capacity
•
DEF Tank Capacity = 7.8 gallons (29.5L)
Type
•
Use only DEF which meet ISO 2224101
standards.
NOTE: John Deere Diesel Exhaust Fluid
recommended.
NOTE: Refill tank with DEF every other fuel
fill to maintain adequate fluid level.
Filling the DEF Tank
Refer to “Engine Aftertreatment - Final
Tier 4” provided in the
Engine and Drive
Systems Section
elsewhere in this manual
for further information.
DEF Storage
DEF has a limited shelf life, both in the
machine’s DEF tank and in storage
containers. The following conditions are ideal
for maintaining DEF quality and shelf life
during prolonged transportation and storage:
•
Store DEF between 23° F (-5° C) and
77° F (25° C).
•
Store DEF in sealed containers to avoid
contamination.
•
Avoid direct sunlight.
By following these conditions, DEF has a
minimum expected shelf life of approximately
18 months.
NOTE: When storing DEF in higher
temperatures for an extended period
of time, the shelf life will be reduced
by approximately 6 months for every
9° F (5° C) above the highest storage
temperature as previously listed.
Long-term DEF storage in a machine (in
excess of 6 months) is not recommended. If
long-term storage is necessary, periodic
testing of the DEF is recommended to ensure
adequate concentration. Having the correct
concentration of DEF is critical in engine and
aftertreatment system performance.
NOTE: To help prevent DEF deterioration
when stored in the DEF tank, locate
and plug the tank venting to seal tank
exposure against environmental
elements.
Checking DEF Concentration
DEF concentration should be checked
when the machine has been stored for an
extended period of time or if it is suspected
that water has been added to the DEF tank.
•
Use a refractometer to check DEF con-
centration.
NOTE: Refer to the engine manufacturer’s
operation manual for further
information on checking DEF
concentration.
•
If the DEF concentration is found to be
inadequate (outside of recommended
specification):
1. Drain the DEF tank.
2. Flush tank with distilled water.
3. Refill tank with new DEF.
4. Recheck DEF concentration.
DEF Gauge
(Located on cab A-post)
-Typical View
