# Service bulletin T1979C

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: 10162943
- Published by NHTSA: 2019\-07\-22
- Manufacturer's number: T1979C
- Manufacturer's date: 2019\-06\-14
- NHTSA component: ENGINE AND ENGINE COOLING

## NHTSA's summary

This Temporary Repair Practice authorizes the inspection and replacement of all rocker levers on identified Engine Serial Numbers should any one rocker lever be found as failed. This is an update to a previously submitted communication.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2019/MC-10162943-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2019/MC-10162943-9999.pdf)

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

## Components

Engine

## Vehicles listed

- CUMMINS ISC
- CUMMINS ISL
- CUMMINS L9

JSON: [/v1/bulletins/10162943](/v1/bulletins/10162943)

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