# Service bulletin CALFTL20\-003

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: 10180064
- Published by NHTSA: 2020\-09\-24
- Manufacturer's number: CALFTL20\-003
- Manufacturer's date: 2020\-09\-16
- NHTSA component: ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN; EQUIPMENT; ENGINE

## NHTSA's summary

Customer Advisory Letter for Fan Hub Fastener Inspection in Business Class M2 Vehicles with DD5 Engines. DTNA has determined that some GHG17 Detroit DD5 engines will need to have the fan hub bolts inspected for correct torque.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2020/MC-10180064-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2020/MC-10180064-9999.pdf)

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

## Components

Engine, Equipment and accessories, Cooling fan, Cooling system

## Vehicles listed

- 2019 to 2021 FREIGHTLINER BUSINESS CLASS M2

JSON: [/v1/bulletins/10180064](/v1/bulletins/10180064)

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