# Service bulletin SIL 797

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: 10191601
- Published by NHTSA: 2021\-05\-04
- Manufacturer's number: SIL 797
- Manufacturer's date: 2021\-04\-06
- NHTSA component: EQUIPMENT

## NHTSA's summary

Certain LR7 aerial devices sold between September 2020 and November 2020 might have a trailer plug wiring configuration that was specified in the purchase order to supply a constant 12\+ volts to pin 6. If you intend to pull a trailer that is configured with pin 6 as the trailer brakes, a wiring change could be needed. Ensure that you check the trailer brake operation as part of the pre\-trip inspection to ensure that the trailer brakes are operating properly. Altec does not require the truck\-mounted trailer plug to be rewired, but rewiring might be necessary depending on the trailer the customer intends to pull.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2021/MC-10191601-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2021/MC-10191601-9999.pdf)

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

## Components

Equipment and accessories

## Vehicles listed

- 2020 ALTEC AERIAL DEVICE

JSON: [/v1/bulletins/10191601](/v1/bulletins/10191601)

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