CEM Locomotive Aftertreatment Caterpillar


Exhaust Outlet Nitrogen Oxide Sensor - Replace

Usage:

- LAS
Note: During installation and handling of the sensor, follow the parameters listed below:

  • Do not expose the sensor to any fluids

  • Do not contact the sensing element when power is applied to the sensor. Contact with the sensing element may result in injury. The sensing element is heated to a minimum of 100° C (212° F).

  • Do not use any lubricant on any part of the sensor other than the threads. Do not use unapproved thread lubricant. Do not apply additional anti-seize to new parts. If additional anti-seize is necessary for pre-installation, use only nickel based anti-seize or non-metallic anti-seize. Apply anti-seize to the threads only and avoid contaminating the sensor head.

  • Do not use sensors that have been dropped or have been exposed to other forms of mishandling. Damage to the sensor may have occurred that is not visible.

  • Ensure that the sensor is securely mounted.




Illustration 1g03125217



Illustration 2g03125219

  1. Remove bolts from cover plates and remove cover plates (1) and (2) .

  1. Disconnect harness assembly and disconnect sensor cabling (3) .

  1. Remove outlet NOx sensor probe (4) .

  1. If necessary, remove bolts, nuts, and sensor cable mounting bracket.



    Illustration 3g02715050

  1. Install outlet NOx sensor probe. Take precautions to prevent damaging the ceramic sensor element (4) when installing.

  1. Connect harness assembly and cabling.

  1. Install cover plate and bolts. Refer to Specifications, SENR3130, "Torque Specifications" for the proper torque.

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