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Service bulletin PI 0856

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10083108
Published by NHTSA2016-10-20
Manufacturer's numberPI 0856
Manufacturer's date2014-11-21
NHTSA componentENGINE AND ENGINE COOLING:EXHAUST SYSTEM; EQUIPMENT

NHTSA's summary

"ROCKER ARMS, REPLACEMENT AND INJECTOR RETORQUE. MACK TRUCKS HAS AUTHORIZED REPLACEMENT OF THE EXHAUST BRAKE ROCKER ARMS AND INJECTOR RETORQUE ON VEHICLES BUILT BETWEEN 09/03/2014 AND 10/27/2014 WITH MACK MP10 US2014 ENGINES. THE ENGINE BRAKE ROCKER ARMS MUST BE CHANGED ON ALL VEHICLES INVOLVED IN THIS CAMPAIGN. "

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, Equipment and accessories, Exhaust and emissions

Vehicles listed
MACK TD2015

Listing a model year does not mean every vehicle of it is concerned: the document says which.