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Service bulletin IK1100020

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 id10115594
Published by NHTSA2017-08-16
Manufacturer's numberIK1100020
Manufacturer's date2014-03-12
NHTSA componentPOWER TRAIN:CLUTCH ASSEMBLY

NHTSA's summary

ZF Sachs Twin XTend clutch; only Vehicles with heavy-duty ZF Sachs Twin XTend™ Clutch

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

Transmission and driveline, Clutch

Vehicles listed
INTERNATIONAL 99002011
INTERNATIONAL 99002013
INTERNATIONAL LONESTAR2011 to 2014
INTERNATIONAL PAYSTAR2011 to 2013
INTERNATIONAL PROSTAR2011 to 2014
INTERNATIONAL TRANSTAR2011 to 2014
INTERNATIONAL WORKSTAR2011 to 2013
INTERNATIONAL WORKSTAR2014

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

Other bulletins for the same vehicles and component
IK11000052017-09-08. Service bulletin. Eaton Clutch Information
AFC-139082013-08-07. Service bulletin. NAVISTAR: SOME VEHICLES MAY EXPERIENCE AN IMPROPER CLUTCH ADJUSTMENT SPECIFICATION. THIS COULD CAUSE THE CLUTCH BRAKE TO FAIL. ALSO INCLUDED MODEL 9900 BETWEEN MAY 25, 2010-OCTOBER 17, 2012. *JS