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Service bulletin T1288A

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 id10085662
Published by NHTSA2016-12-07
Manufacturer's numberT1288A
Manufacturer's date2015-11-24
NHTSA componentENGINE AND ENGINE COOLING:ENGINE:GASOLINE:BELTS AND ASSOCIATED PULLEYS

NHTSA's summary

THIS TEMPORARY REPAIR PRACTICE IS FOR CERTAIN ISB 6.7 CM2250 ENGINES IN SCHOOL BUS APPLICATIONS BUILT WITH OPTION CF9235. IT IMPROVES THE BELT LENGTH FOR BETTER FRONT END ACCESSORY DRIVE SYSTEM PERFORMANCE.

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, Drive belts

Vehicles listed
CUMMINS ISB6.7

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