# Service bulletin CSR 531

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: 10209226
- Published by NHTSA: 2022\-03\-22
- Manufacturer's number: CSR 531
- Manufacturer's date: 2022\-03\-18
- NHTSA component: PARKING BRAKE; POWER TRAIN; ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM

## NHTSA's summary

Altec Industries, Inc. has received notification from Navistar that a condition exists relating to motor vehicle safety, compliance, or emissions in a vehicle you possess that is equipped with Altec equipment. On certain trucks equipped with an automatic transmission, if the automatic transmission is still in drive or reverse position and the stationary PTO switch is engaged, the engine RPM will ramp up and may overcome parking brake hold capability resulting in possible vehicle movement. Unexpected movement of the truck can increase the risk of a crash resulting in property damage or personal injury.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2022/MC-10209226-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2022/MC-10209226-9999.pdf)

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

## Components

Brakes, Electrical system, Engine, Transmission and driveline, Parking brake

## Vehicles listed

- 2017 to 2020 ALTEC AERIAL DEVICE
- 2017 to 2020 ALTEC DIGGER DERRICK

JSON: [/v1/bulletins/10209226](/v1/bulletins/10209226)

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