# Service bulletin TIBU8479\-00

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: 10089396
- Published by NHTSA: 2017\-01\-24
- Manufacturer's number: TIBU8479\-00
- Manufacturer's date: 2015\-09\-24
- NHTSA component: POWER TRAIN

## NHTSA's summary

BOLTS FOR THE CONTROL VALVE MAY COME LOOSE ON CERTAIN CX31 ON\-HIGHWAY TRANSMISSIONS IN THE CT660 ON\-HIGHWAY TRUCKS \- THE CT660 ON\-HIGHWAY TRUCKS EQUIPPED WITH THE CX31 TRANSMISSION HAVE HAD THE 8T\-4908 BOLTS LOOSEN FROM THE 371\-0891 SEPARATOR PLATE . THE BOLT FAILURE RESULTS IN AN OIL LEAK SEEN AS A DUST ACCUMULATION ON THE PLATE SURFACE OR OIL SPOTS ON THE GROUND. REPLACE 12 EXISTING 8T\-4224 HARD WASHERS AND 12 EXISTING 8T\-7547 BOLTS WITH 12 NEW HARD WASHERS AND 12 NEW BOLTS.

## 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

Transmission and driveline

## Vehicles listed

- CATERPILLAR CATERPILLAR

JSON: [/v1/bulletins/10089396](/v1/bulletins/10089396)

[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%20TIBU8479-00&page=https%3A%2F%2Fopen.wenmarpro.com%2Fbulletins%2F10089396&vehicle=Service%20bulletin%20TIBU8479-00)