# Service bulletin PIB 494

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: 10121941
- Published by NHTSA: 2017\-11\-03
- Manufacturer's number: PIB 494
- Manufacturer's date: 2017\-09\-28
- NHTSA component: EQUIPMENT

## NHTSA's summary

If the coach's HWH leveling system has intermittent issues when operating, check for corrosion or loose mounting bolts. Torque the mounting bolts \(if needed\) to 30 ft. pounds. A ground cable may also be installed to improve the overall grounding of the HWH pump assembly.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2017/MC-10121941-9999.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2017/MC-10121941-0001.pdf)

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

## Components

Equipment and accessories

## Vehicles listed

- 1994 to 2018 NEWMAR DUTCH STAR
- 2003 to 2018 NEWMAR ESSEX
- 2003 to 2018 NEWMAR KING AIRE
- 1995 to 2018 NEWMAR LONDON AIRE
- 1991 NEWMAR MOUNTAIN AIRE
- 1994 to 2018 NEWMAR MOUNTAIN AIRE
- 2001 to 2018 NEWMAR NEW AIRE

JSON: [/v1/bulletins/10121941](/v1/bulletins/10121941)

[Report an error on this page](https://github.com/wenmar-pro/wenmar-open/issues/new?template=data_correction.yml&title=Data%20correction%3A%20Service%20bulletin%20PIB%20494&page=https%3A%2F%2Fopen.wenmarpro.com%2Fbulletins%2F10121941&vehicle=Service%20bulletin%20PIB%20494)