Service Manual

Aftertreatment Diesel Exhaust Fluid Dosing Unit Filter ISB, ISBe and QSB (Common Rail [...]
Page 11-44 Section 11 - Exhaust System - Group 11
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Aftertreatment Diesel Exhaust Fluid
Dosing Unit Filter (011-060)
General Information
WARNING
Diesel exhaust fluid (DEF) contains urea. Do not get
the substance in your eyes. In case of contact,
immediately flush eyes with large amounts of water
for a minimum of 15 minutes. Do not swallow. In the
event the DEF is ingested, contact a physician
immediately. Reference the materials safety data
sheet (MSDS) for additional information.
WARNING
The exhaust and exhaust components can remain hot
after the engine has been shut down or secured. To
avoid the risk of fire, property damage, burns or other
serious personal injury, allow the exhaust system to
cool before beginning this procedure or repair and
make sure that no combustible materials are located
where they might come in contact with hot exhaust or
exhaust components.
The diesel exhaust fluid (DEF) dosing unit connections
are as illustrated:
1 Compressed air supply
2 Air solenoid connector (2 pin)
3 37-pin ITT Cannon™ connector
4 DEF supply to aftertreatment nozzle (PTFE line)
5 DEF supply to pump
6 DEF return
Lines 4, 5, and 6 have quick-fit connections.
The DEF supply line contains a screen filter.
Initial Check
Visually check the DEF supply and return lines and fittings
for signs of damage, leaks, or faulty connectors.
If accessible, make sure that the primary filter fitted to the
DEF tank is a 35 micron filter. (Previously, this was a 70
micron filter).
Make sure that any contaminants found prior to carrying
out this check have been removed and that the DEF lines
have been cleared.