freightliner Custom Classic MT45 2022, Maintenance Manual

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5. Check for leaks around all clamps that attach the
ATD in the ATS, and around the clamps that re-
tain the DPF in the ATD. No leaks are allowed
anywhere in the system.
6. Check all sensors attached to the ATD for leaks
or damaged wires.
7. Check the DPF exterior surface for dents or
other damage. See
Fig. 2 , Reference A. A dent
over 3 inches (76 mm) in diameter and 1/4-inch
(6-mm) deep could cause internal damage to the
DPF, causing it to malfunction.
8. Check for heat discoloration on the surface of
the ATD. Heat discoloration may indicate internal
damage; especially around the DPF.
9. Check any wires, lines, or hoses within 4 inches
(10 cm) of the exhaust system for heat damage.
Repair or reroute as needed.
11/2/2006 f490284
A
1
2
3
4
6
7
8
9
4
4
B
5
C
A. Inspect this area of the canister for dents.
B. DOC Area C. DPF Area
1. Inlet Temperature Sensor
2. Marmon Fitting at Inlet from Turbocharger
3. Sensor Housing
4. DPF V-Band Mounting Clamps
5. Inlet Temperature Sensor
6. Exhaust Outlet to Diffuser
7. Outlet Temperature Sensor
8. DPF Outlet Pressure Sensor
9. DPF Intake Pressure Sensor
Fig. 2, Cummins Aftertreatment Device
Exhaust
49
Walk-In Van Chassis Maintenance Manual, November 2015
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