# Service bulletin 4891

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: 601762
- Published by NHTSA: 1998\-08\-24
- Manufacturer's number: 4891
- Manufacturer's date: 1998\-03\-30
- NHTSA component: SERVICE BRAKES, AIR:SUPPLY:HOSES, LINES/PIPING, AND FITTINGS

## NHTSA's summary

SOME VEHICLES BUILT BETWEEN OCTOBER 1, 1996 AND DECEMBER 31, 1997 WITH AD\-9DI OR AD\-9I EXTENDED PURGE AIR DRYERS VEHICLES MAY EXPERIENCE A STICKING PURGE VALVE. \*YC

## The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

## Components

Brakes, Brake hoses and lines

## Vehicles listed

- 1996 to 1997 PETERBILT PETERBILT

JSON: [/v1/bulletins/601762](/v1/bulletins/601762)

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