TSB170042-040320

Improper Removal of Ignition Coil Extension Dielectric Heat Shrink
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Technical Service Bulletin Number
TSB170042
Technical Service Bulletin
Subject
Improper Removal of Ignition Coil Extension Dielectric Heat Shrink
Warranty Statement
The information in this document has no effect on present warranty coverage or repair
practices, nor does it authorize TRP or Campaign actions.
Contents
Product Affected
• ISX12 G CM2180 EJ
Issue
Ignition coil extension dielectric heat shrink is improperly being removed prior to installation
of ignition coil. Removing ignition coil extension dielectric heat shrink will reduce life of
ignition coil extension.
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Improper Removal of Ignition Coil Extension Dielectric Heat Shrink
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Figure 1, Example of Dielectric Heat Shrink Installed on Ignition Coil Extension.
Verification
Electrical arcing through ignition coil extension in area where silicone extension tube is
connected to spark plug boot adapter can cause visible damage and burn marks to ignition
coil extension tube. See Figure 2 and Figure 3 below.
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Improper Removal of Ignition Coil Extension Dielectric Heat Shrink
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Figure 2, Example of Signs of Arching on Ignition Coil.
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Improper Removal of Ignition Coil Extension Dielectric Heat Shrink
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Figure 3, Magnified Example of Signs of Arching on Ignition Coil.
Resolution
Never remove clear dielectric heat shrink wrap from ignition coil extension.
Production Status
Table 1, Production Information
ESN First
Build Date*
Engine Plant
75043591
26 June 2015
Jamestown Engine Plant
*Engine build date can be found on the engine dataplate.
Publications Affected
Table 2, Publications Affected
Manual
Type
Engine
Bulletin
Number
Procedure Title
Procedure
Service
Manual
ISX12 G
CM2180 EJ
4310682
Ignition Coil (Non
Shielded)
Refer to Procedure
13
013-012
Section
Document History
Date
2017-3-30
Details
Module Created
Last Modified: 03-Apr-2017
Copyright © 2000-2010 Cummins Inc. All rights reserved.
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