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Service bulletin SB-261-022

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 id10033145
Published by NHTSA2010-07-16
Manufacturer's numberSB-261-022
Manufacturer's date2009-12-01
NHTSA componentENGINE AND ENGINE COOLING:COOLING SYSTEM:RADIATOR ASSEMBLY

NHTSA's summary

MACK TRUCK: ON SOME TRUCKS THE MAIN CAB HARNESS HAS BEEN FOUND TO COME IN CONTACT WITH THE RADIATOR RECIRCULATION SHIELD ON THE COOLING PACKAGE WHEN THE CAB IS DOWN AND LOCKED IN OPERATING POSITION. *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, Cooling system, Radiator

Vehicles listed
MACK MRU2008 to 2009

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