# Service bulletin SIL 659

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: 10117853
- Published by NHTSA: 2017\-09\-20
- Manufacturer's number: SIL 659
- Manufacturer's date: 2017\-07\-11
- NHTSA component: EQUIPMENT

## NHTSA's summary

This service information letter \(SIL\) requires installation of an improved hydroelectric lower control station selector valve. Earlier versions of the valve can fail to shift or operate in some situations.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2017/MC-10117853-9999.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2017/MC-10117853-0001.pdf)

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

## Components

Equipment and accessories

## Vehicles listed

- ALTEC AA
- ALTEC AM
- ALTEC AN

JSON: [/v1/bulletins/10117853](/v1/bulletins/10117853)

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