# Service bulletin TP19021

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: 10163988
- Published by NHTSA: 2019\-08\-19
- Manufacturer's number: TP19021
- Manufacturer's date: 2019\-07\-16
- NHTSA component: EQUIPMENT; PARKING BRAKE; EQUIPMENT ADAPTIVE/MOBILITY

## NHTSA's summary

Provides maintenance information for the dual\-diaphragm spring brake actuators

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2019/MC-10163988-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2019/MC-10163988-9999.pdf)

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

## Components

Brakes, Equipment and accessories, Parking brake

## Vehicles listed

- WABCO PARK BRAKE RELAY VALVE

JSON: [/v1/bulletins/10163988](/v1/bulletins/10163988)

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