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Clean the aftertreatment DEF dosing unit cap
and threads on the dosing unit with warm water
and a clean cloth.
Never operate the truck with the DEF cap
Never operate the truck with the DEF cap
removed.
removed.
④
※
250D9DEF03
Install
Install
Slide the DEF filter equalizing element (2) into
the DEF filter cartridge (3).
Insert the assembly into the aftertreatment DEF
dosing unit.
Install and tighten the cap (1). A 27 mm wrench
can be used to install and tighten the filter cap.
·
Tightening torque : 2.0 kgf
·
m (14.5 lbf
·
ft)
Lubrication of the DEF filter O-rings is not
Lubrication of the DEF filter O-rings is not
required.
required.
The aftertreament DEF dosing system will
The aftertreament DEF dosing system will
not prime until the correct SCR temperatures
not prime until the correct SCR temperatures
are reached. To verify that there are no DEF
are reached. To verify that there are no DEF
leaks, test drive the truck for a minimum of
leaks, test drive the truck for a minimum of
15 mimutes to get the SCR system up to
15 mimutes to get the SCR system up to
temperature.
temperature.
①
②
③
※
※
1
2
3
250D9DEF04
1 DEF dosing unit filter cap
2 DEF filter equalizing element
3 DEF dosing unit filter element
(3)
(3)