# Service bulletin TSB190133\-072420

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: 10163648
- Published by NHTSA: 2019\-08\-12
- Manufacturer's number: TSB190133\-072420
- Manufacturer's date: 2019\-07\-24
- NHTSA component: ENGINE AND ENGINE COOLING

## NHTSA's summary

This Technical Service Bulletin describes the verification and resolution of lubricating oil seepage from the crankcase breather tube at rocker lever cover attachment point caused by excess material on rocker lever cover interferring with the crankcase breather tube sealing ability.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2019/MC-10163648-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2019/MC-10163648-9999.pdf)

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

## Components

Engine

## Vehicles listed

- CUMMINS X12

JSON: [/v1/bulletins/10163648](/v1/bulletins/10163648)

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