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Service bulletin TSB180112-082720

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 id10144406
Published by NHTSA2018-09-17
Manufacturer's numberTSB180112-082720
Manufacturer's date2018-08-27
NHTSA componentENGINE AND ENGINE COOLING

NHTSA's summary

This Technical Service Bulleting describes the new required re-usable crankshaft seal service tool to be used to failsafe installation and removal of rear crankshaft seals in event of leaks moving forward.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Engine

Vehicles listed
CUMMINS B6.7
CUMMINS ISB
CUMMINS ISB6.7
CUMMINS ISC
CUMMINS ISC8.3
CUMMINS ISL
CUMMINS ISL 9
CUMMINS ISLG
CUMMINS L9

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