# Service bulletin P\-1670

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: 10027951
- Published by NHTSA: 2009\-02\-24
- Manufacturer's number: P\-1670
- Manufacturer's date: 2008\-09\-18
- NHTSA component: ENGINE AND ENGINE COOLING:ENGINE:DIESEL

## NHTSA's summary

MACK TRUCK: UNIT INJECTOR AND EXHAUST ROCKER ARMS, COMBUSTION SEALING WASHER AND UNIT INJECTOR YOKE REPLACEMENT. MODEL AND MODEL YEARS UNKNOWN. \*PE

## 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

Engine

## Vehicles listed

- 1994 MACK CH

## Other bulletins for the same vehicles and component

- [KC\-2112](/bulletins/10215315.md), 2022-07-05, Service bulletin: ELECTRICAL SYSTEM; POWER TRAIN; ENGINE AND ENGINE COOLING. Programming Failure \- Chassis With Cummins Engine And An Allison Transmission
- [KC\-750](/bulletins/10215287.md), 2022-07-05, Service bulletin: ENGINE AND ENGINE COOLING. US10 Emission Engines \- Diagnostic Trouble Code \( DTC \) SPN 1231 FMI 9 Troubleshooting.
- [KC\-663](/bulletins/10213658.md), 2022-06-07, Service bulletin: ENGINE AND ENGINE COOLING. Emcon \(Spark Assist\) Engine Aftertreatment System Troubleshooting Check Sheet \- US07 Emissions
- [KC\-653](/bulletins/10213652.md), 2022-06-07, Service bulletin: ENGINE AND ENGINE COOLING. Low Oil Pressure Diagnostic Process For 11 Liter Engines
- [KC\-2171](/bulletins/10213641.md), 2022-06-07, Service bulletin: ENGINE AND ENGINE COOLING. Temperature Sensor Troubleshooting Guide \- US10\+OBD13 And Newer
- [KC\-2165](/bulletins/10213638.md), 2022-06-07, Service bulletin: ENGINE AND ENGINE COOLING. DEF Pump Troubleshooting Guide \- US10\+OBD13 And Newer Emissions
- [KC\-2161](/bulletins/10213637.md), 2022-06-07, Service bulletin: ENGINE AND ENGINE COOLING. DEF Pump Cycling periodically Hours After Key Off
- [KC\-2158](/bulletins/10213636.md), 2022-06-07, Service bulletin: ENGINE AND ENGINE COOLING. Selective Catalytic Reduction \(SCR\) Muffler Troubleshooting Guide \- US10\+OBD13 And Newer Emissions
- [KC\-2131](/bulletins/10213633.md), 2022-06-07, Service bulletin: ENGINE AND ENGINE COOLING. USE FOR NEW VEHICLES \(US21\+OBD22 Emissions\) \- Intermittent Diagnostic Trouble Codes U02A3, U029D, U029E
- [KC\-2116](/bulletins/10213632.md), 2022-06-07, Service bulletin: ENGINE AND ENGINE COOLING. NOx Sensor Troubleshooting Guide \- US10\+OBD13 And Newer Emissions

JSON: [/v1/bulletins/10027951](/v1/bulletins/10027951)

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