Service Manual

ISB, ISBe and QSB (Common Rail [...] Aftertreatment Selective Catalytic Reduction (SCR) Cata [...]
Section 11 - Exhaust System - Group 11 Page 11-33
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Aftertreatment Selective Catalytic
Reduction (SCR) Catalyst (011-036)
General Information
WARNING
The exhaust and exhaust components can remain hot
after the vehicle stopped moving. To reduce 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 are likely to come in contact with hot exhaust or
exhaust components.
WARNING
The catalyst substrate contains Vanadium Pentoxide.
Vanadium Pentoxide has been determined by the
State of California to cause cancer. Always wear
protective gloves, dust mask, and eye protection
when handling the catalyst assembly. Do not get the
catalyst material in your eyes. In case of contact,
immediately flood eyes with large amounts of water
for a minimum of 15 minutes. Avoid prolonged
contact with skin. In case of contact, immediately
wash skin with soap and water.
WARNING
The catalyst substrate contains Vanadium Pentoxide.
Vanadium Pentoxide has been determined by the
State of California to cause cancer. In the event the
catalyst is being replaced, dispose of in accordance
with local regulations. Do not cut open the catalyst
assembly.
WARNING
This component or assembly weighs greater than 23
kg [50 lb]. To prevent serious personal injury, be sure
to have assistance or use appropriate lifting
equipment to lift this component or assembly.
Preparatory Steps
WARNING
The exhaust and exhaust components can remain hot
after the vehicle stopped moving. To reduce 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 are likely to come in contact with hot exhaust or
exhaust components.
• Disconnect and remove the exhaust gas temperature
sensors from the vehicle catalyst. Refer to Procedure
019-013 (Exhaust Gas Temperature Sensor) in
Section 19 of the ISB, ISBe4, QSB4.5, QSB5.9, ISC,
QSC8.3, ISL, ISLe3, ISLe4, and QSL9 Engines,
CM850 Electronic Control System Troubleshooting
and Repair Manual, Bulletin 4021416.