# Service bulletin C1794C

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

- Type: Service bulletin
- NHTSA id: 10110299
- Published by NHTSA: 2017\-08\-04
- Manufacturer's number: C1794C
- Manufacturer's date: 2017\-03\-21
- NHTSA component: ENGINE AND ENGINE COOLING; FUEL SYSTEM, GASOLINE; FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP

## NHTSA's summary

This Campaign is being issued to upgrade certain ISX15 CM2350 High Pressure Fuel Pump Tappets. This field action provides authorization for certified repair locations to replace the brass roller pin tappets in the high pressure fuel pump with new diamond\-like coated roller pin tappets. This a revision to a previous communication.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2017/MC-10110299-9999.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2017/MC-10110299-0001.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Engine, Fuel system, Fuel pump

## Vehicles listed

- CUMMINS ISC
- CUMMINS ISL
- CUMMINS ISX15

JSON: [/v1/bulletins/10110299](/v1/bulletins/10110299)

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