KC-2 Service Bulletin/Repair Instructions

9/27/21, 1:56 PM
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Updated PM Sensor Removal Procedure US17+OBD16 and Newer Emissions
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Once the PM Sensor is determined to be replaced, follow the steps

below to remove the failed sensor.

1. Cut the harness at the top of the sensor.
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2. Spray the sensor nut with a suitable rust penetrant and let soak for

approximately 5 minutes.

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3. Remove the sensor with a ½” drive impact and appropriately sized

deep socket.
4. Use an M18 x 1.5mm bottoming tap to chase the SCR boss threads.

• Example bottoming tap – Grainger part # 2LWT5
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5. Inspect the boss threads and PM Sensor alignment notch for debris

and clean if necessary.
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6. Install the new PM sensor and torque to spec. Refer to Impact for the

correct torque spec.
If it is not possible to install the new sensor due to stripped bung

threads refer to FSB 258-039, SCR Fittings.
NOTE

An eService case is NOT REQUIRED for approval to replace a

damaged SCR. Cases opened for approval to replace for this issue

WILL BE REFUSED.
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FSB 258-039
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Last update on 2026-05-13 / Affiliate links / Images from Amazon Product Advertising API

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