Service Manual

ISB, ISBe and QSB (Common Rail [...] Aftertreatment Diesel Exhaust Fluid Dosing Unit Filter
Section 11 - Exhaust System - Group 11 Page 11-45
To buy Cummins Parts and Service Manuals, Training Guides, or Tools go to our website at https://store.cummins.com
Preparatory Steps
WARNING
Batteries can emit explosive gases. To reduce the
possibility of personal injury, always ventilate the
compartment before servicing the batteries. To
reduce the possibility of arcing, remove the negative
(-) battery cable first and attach the negative (-)
battery cable last.
NOTE: Do not power wash or steam clean this unit. Use
compressed air to remove any loose debris.
• Disconnect the batteries. Refer to the original
equipment manufacturer (OEM) service manual.
Remove
WARNING
Diesel exhaust fluid (diesel exhaust fluid) 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 diesel exhaust fluid is
ingested, contact a physician immediately. Reference
the Materials Safety Data Sheet (MSDS) for additional
information.
The DEF dosing unit must be wiped with a clean damp
cloth and/or a spray bottle with mild detergent. This will
remove any contamination and reduce the risk of debris
entering the DEF dosing unit.
NOTE: Do not power wash or steam clean this unit.
Disconnect the DEF supply pipework from the DEF dosing
unit and drain any excess catalyst solution into a suitable
container. The fitting is a quick release fitting; to release,
press both sides of the fitting.
NOTE: The inline screen filter is not a serviceable part.
Therefore, it can not be cleaned. If it is found to be
blocked or damaged, it must be replaced.
Remove the DEF supply line fitting.
The inlet fitting and screen filter as illustrated:
1 Inlet fitting and screen filter housing
2 100 micron screen filter
NOTE: The screen filter is not removable from the
connector. This is for illustration purposes only.