Section 04: EXHAUST AND AFTERTREATMENT SYSTEM
PA1593
10
5.1 DIESEL EXHAUST FLUID
When handling DEF solution, it is important that
electrical connectors to be connected or well
encapsulated, otherwise there is a risk that the
DEF will cause oxidation that cannot be
removed. Water or compressed air will not help,
since DEF quickly oxidizes certain metals. If a
disconnected connector comes into contact with
the DEF solution, it must be replaced
immediately to prevent the DEF solution from
creeping further into the copper wiring, which
takes place at a speed of about 2.4 in (60 mm)
per hour.
CAUTION
Diesel Exhaust Fluid (DEF) is a nontoxic
aqueous solution of urea (32.5%) and ultra-
pure water (67.5%). Urea is a compound of
nitrogen that turns to ammonia when heated.
The fluid is non-flammable, and is not
dangerous when handled as recommended.
However, it is highly corrosive to certain
metals, especially copper and brass.
When detaching hoses and components, do
not spill DEF on disconnected or unsealed
connectors. If DEF is spilled on a
disconnected or unsealed connector, the
connector must be removed immediately and
replaced.
Things to know about spilt diesel exhaust fluid
(DEF):
If urea solution comes into contact with the
skin, rinse with plenty of water and remove
contaminated clothing.
If urea solution comes into contact with the
eyes rinse for several minutes and call for
medical help if necessary.
If inhaled breathe fresh air and call for
medical help if necessary.
Do not allow the DEF solution to come into
contact with other chemicals.
The DEF solution is not flammable. If the
DEF solution is exposed to high
temperatures, it breaks down into ammonia
and carbon dioxide.
The DEF solution is highly corrosive to
certain metals, including copper and
aluminum.
If the DEF solution is spilled onto the vehicle,
wipe off the excess and rinse with water.
Spilled DEF solution can form concentrated
white crystals on the vehicle. Rinse off these
crystals with water.
WARNING
DEF spilt onto hot components will quickly
vaporize. Turn your face away!
5.2 DEF TANK CLEANING
Removing the DEF tank for cleaning is not
necessary.
1. Put a suitable container under the DEF tank.
2. Remove the DEF tank drain plug through the
DEF tank support pan access hole.
3. Let all of the DEF drain from the tank.
Discard the used DEF according to local
regulations.
4. Remove the DEF tank filler neck insert. To
do so, release the retaining tab and remove
filler neck insert. Replace old seal if
damaged.
5. Flush the tank with hot water. Let all of the
water drain from the tank.
6. Clean the filler neck insert screen with hot
water.
7. Reinstall the filler neck insert until the
retaining tabs snap into filler neck. Reinstall
DEF tank drain plug.
To Next Page
Loading...
