MTU 12V4000C*5 series, Operating Instructions Manual

Page: 259 / 305

8.22.5 NOx sensor – Replacement
Preconditions
☑ Engine is stopped and starting disabled.
☑
Power supply to electronic engine management system is switched off.
Special tools, Material, Spare parts
Designation / Use Part No. Qty.
Torque wrench, 4–20 Nm F30044239 1
Torque wrench, 10–60 Nm F30452769 1
Ratchet bit
F30027340 1
Assembly compound (Molykote P 37)
50564 1
NOx sensor
(→ Spare Parts Catalog) 1
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
Incorrect measurement of the sensors are possible even with small amounts of contamination during
assembly and due to contaminated process materials.
Sensor damage resultant damage to components is possible!
• Prior to assembly, check sensors for particular cleanness and install with clean hands.
• Protect sensor against contamination with certain materials (e.g. thread grease, engine oil, silicone,
reducing agent and others).
• The process materials must meet the requirements of the Fluids and Lubricants Specifications.
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.
MS15041/03E 2018-08 | Accessories for (Electronic) Engine Governor / Control System | 257
TIM-ID: 0000025205 - 018