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8.13.13 NOx sensor – Replacement
Preconditions
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Engine was stopped with key switch.
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SCR system switched off after completion of aftercooling phase.
Special tools, Material, Spare parts
Designation / Use
Part No.
Qty.
Torque wrench, 10–60 Nm
F30452769
1
Assembly compound (Molykote P 37)
50564
1
NOx sensor
(→ Spare Parts Catalog)
3
WARNING
Hot components/surfaces.
Risk of burns!
• Allow the engine to cool down to below 50 °C before beginning work.
• Wear suitable protective equipment/thermal gloves.
• Avoid unprotected contact with hot surfaces.
NOTICE
High voltage.
Risk of damage to components!
• Switch off ignition before replacing components.
NOTICE
Ceramic cell breakage due to shock or impact.
Risk of damage to components!
• Avoid shocks and impacts.
• Exercise extreme care when handling sensors.
Preparatory steps
1.
Remove screws (1) and open clamps (3).
2.
Remove metal plate segment (2).
Note:
Insulating molding (4) is split in two and
serves as a seal.
3.
Remove front insulating molding (4).
MS150123/01E 2017-05
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