# Service bulletin SD\-08\-12046

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: 10186941
- Published by NHTSA: 2021\-02\-10
- Manufacturer's number: SD\-08\-12046
- Manufacturer's date: 2021\-01\-27
- NHTSA component: SERVICE BRAKES

## NHTSA's summary

The function of the Bendix® AD\-HF® \(High Flow\) PuraGuard® oil coalescing air dryer and the AD\-HF®i \(High Flow Intelligent\) air dryer is to collect and remove air system contaminants in solid, liquid, and aerosol form before they enter the brake system. As a module, they provide heavy vehicles with an integrated vehicle air dryer, purge reservoir, governor, and a number of the charging valve components in a complete assembly. These components have been designed as an integrated air supply system.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2021/MC-10186941-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2021/MC-10186941-9999.pdf)

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

## Components

Brakes

## Vehicles listed

- BENDIX AD\-2 AIR DRYER

JSON: [/v1/bulletins/10186941](/v1/bulletins/10186941)

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