# Service bulletin FSB 237\-020

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: 10116226
- Published by NHTSA: 2017\-08\-25
- Manufacturer's number: FSB 237\-020
- Manufacturer's date: 2017\-06\-23
- NHTSA component: POWER TRAIN:AUTOMATIC TRANSMISSION:TORQUE CONVERTER

## NHTSA's summary

MACK CHU, CXU, GR, GU, and PI trucks built from 2009 to 2017 and equipped with MP7, MP8, and MP10 engines \(EM\-USA10, EM\-USA14, and EM\-USA17\), will require a new torque specification for the Unit Injector Yoke Hold\-Down Bolt.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2017/MC-10116226-9999.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2017/MC-10116226-0001.pdf)

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

## Components

Transmission and driveline, Automatic transmission, Torque converter

## Vehicles listed

- 2010 to 2018 MACK CHU
- 2010 to 2018 MACK CXU
- 2010 to 2018 MACK GU

JSON: [/v1/bulletins/10116226](/v1/bulletins/10116226)

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