# Service bulletin CSR 508

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: 10187991
- Published by NHTSA: 2021\-03\-03
- Manufacturer's number: CSR 508
- Manufacturer's date: 2021\-02\-24
- NHTSA component: WHEELS

## NHTSA's summary

Daimler Trucks North America LLC \(DTNA\), on behalf of its Freightliner Trucks Division and wholly\-owned subsidiary, Western Star Truck Sales Inc., has decided that a defect which relates to motor vehicle safety exists on specific model year 2020 through 2021 Freightliner 108SD, 114SD, Business Class M2, and Cascadia vehicles manufactured June 1, 2020, through September 9, 2020. On certain vehicles, the steer axle spindle nut snap ring may not be fully engaged. If the snap ring becomes dislodged, it may not prevent the spindle nut from backing\-off. This can cause the hub to loosen and potentially cause a wheel\-off condition, increasing the risk of a motor vehicle crash or injury. The snap ring will be inspected for proper installation and repaired as needed. Repairs will be performed by Daimler Trucks North America authorized service facilities.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2021/MC-10187991-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2021/MC-10187991-9999.pdf)

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

## Components

Wheels

## Vehicles listed

- 2020 ALTEC AERIAL DEVICE
- 2020 ALTEC DIGGER DERRICK

JSON: [/v1/bulletins/10187991](/v1/bulletins/10187991)

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