# Service bulletin PI 0833

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: 10083663
- Published by NHTSA: 2016\-10\-28
- Manufacturer's number: PI 0833
- Manufacturer's date: 2013\-10\-29
- NHTSA component: ELECTRICAL SYSTEM: INTEGRATED TRAILER BRAKE CONTROL; SERVICE BRAKES

## NHTSA's summary

SOME UNITS WITHOUT HAND CONTROL VALVES HAVE BEEN BUILT WITH A DOUBLE CHECK VALVE INSTALLED TO THE TPV. THIS IS A MISBUILD AND THE DOUBLE CHECK VALVE NEEDS TO BE REMOVED FOR PROPER OPERATION OF THE TRAILER BRAKE SYSTEM.

## 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, Electrical system

## Vehicles listed

- 2014 MACK CHU
- 2014 MACK CXU
- 2014 MACK GU

JSON: [/v1/bulletins/10083663](/v1/bulletins/10083663)

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