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Maintenance—Machine
KR46761,00013F9 -19-26OCT16-1/1
DX,DEF,STORE -19-15JUL20-1/1
Testing Diesel Exhaust Fluid (DEF)
IMPORTANT: Using DEF with the correct
concentration is critical to engine and
aftertreatment system performance. Extended
storage and other conditions can adversely
alter the DEF concentration.
If DEF quality is questionable, draw a sample out of the
DEF tank or storage tank into a clear container. DEF
must be crystal clear with a light ammonia smell. If DEF
appears cloudy, has a colored tint, or has a profound
ammonia smell, it is likely not within specication. DEF
in this condition should not be used. Drain tank, ush
with distilled water and rell with new or good DEF. After
relling the tank, check the DEF concentration.
If the DEF passes the visual and smell test, check the DEF
concentration with a handheld refractometer calibrated
to measure DEF.
DEF concentration should be checked when the engine
has been stored for extended periods, or if there is
suspicion the engine or packaged DEF uid has been
contaminated with water.
Two approved tools are available through Hitachi dealer:
•
JDG11594 Digital DEF Refractometer—A digital tool
providing an easy to read concentration measurement
•
JDG11684 DEF Refractometer—Low-cost alternative
tool providing an analog reading
Follow instructions included with either tool to obtain the
measurement.
The correct DEF concentration is 31.8—33.2% urea. If
the DEF concentration is not within specication, drain the
DEF tank, ush with distilled water and ll with new or good
DEF. If packaged DEF is not within specication, dispose
of DEF packages and replace with new or good DEF.
Storing Diesel Exhaust Fluid (DEF)
CAUTION: Avoid contact with eyes. In case
of contact, immediately ush eyes with large
amounts of water for a minimum of 15 minutes.
Reference the Materials Safety Data Sheet
(MSDS) for additional information.
Do not ingest DEF. In the event DEF is ingested,
contact a physician immediately. Reference
the Materials Safety Data Sheet (MSDS) for
additional information.
IMPORTANT: It is unlawful to tamper with or remove
any component of the aftertreatment system.
Do not use DEF that does not meet the required
specications or operate the engine with no DEF.
Never attempt to create DEF by mixing
agricultural grade urea with water. Agricultural
grade urea does not meet the necessary
specications and can damage the
aftertreatment system.
Do not add any chemicals or additives to
DEF in an effort to prevent freezing. Any
chemicals or additives added to DEF can
damage the aftertreatment system.
Never add water or any other uid in place
of, or in addition to DEF. Operating with a
modied DEF or using an unapproved DEF can
damage the aftertreatment system.
Storage information provided below is for reference and is
to be used as a guideline only.
It is preferred to store DEF out of extreme ambient
temperatures. DEF freezes at –11°C (12°F). Exposure to
temperatures greater than 30°C (86°F) can degrade DEF
over time. Do not store DEF in direct sunlight.
Dedicated DEF storage containers must be sealed
between uses to prevent evaporation and contamination.
Containers made of polyethylene, polypropylene, or
stainless steel are recommended to transport and store
DEF.
Ideal conditions for storage of DEF are:
•
Store at temperatures between –5°C and 30°C (23°F
and 86°F)
•
Store in dedicated containers sealed to avoid
contamination and evaporation
Under these conditions, DEF is expected to remain
useable for a minimum of 18 months. Storing DEF
at higher temperatures can reduce its useful life by
approximately 6 months for every 5°C (9°F) temperature
above 30°C (86°F).
If unsure how long or under what conditions DEF has been
stored, test DEF. See Testing Diesel Exhaust Fluid (DEF).
Long-term storage in the DEF tank (over 12 months) is
not recommended. If long-term storage is necessary,
test DEF prior to operating engine. See Testing Diesel
Exhaust Fluid (DEF).
It is recommended to purchase DEF in quantities that will
be consumed within 12 months.
3-1-6
112321
PN=184
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