# Service bulletin TSB260118

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: 11037036
- Published by NHTSA: 2026\-09\-04
- Manufacturer's number: TSB260118
- Manufacturer's date: 2026\-08\-26
- NHTSA component: ENGINE

## NHTSA's summary

This Technical Service Bulletin describes the verification and resolution steps for the Front End Accessory Drive \(FEAD\) on certain B6.7O engines in PACCAR U\-Haul applications which may exhibit alternator\-to\-compressor pulley misalignment, resulting in belt noise or whining from the Front End Accessory Drive \(FEAD\).

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2026/MC-11037036-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2026/MC-11037036-9999.pdf)

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

## Components

Engine

## Vehicles listed

- CUMMINS B6.7O

JSON: [/v1/bulletins/11037036](/v1/bulletins/11037036)

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