TSB200218-110920

11/30/2020
Illegible Cylinder Block Stamping
Technical Service Bulletin
Technical Service Bulletin: TSB200218
Illegible Cylinder Block Stamping
Released Date: 09-Nov-2020
Illegible Cylinder Block Stamping
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
Engines:
B4.5 (All Versions)
B6.7 (All Versions)
L9 (All Versions)
L9N (All Versions)
Engine Serial Number (ESN) Range:
74677100 to 74678199
Issue
Illegible ESN stamping on engine cylinder block. The sixth digit in the ESN is unreadable due to an issue with the stamping machine
at the assembly plant. The sixth digit in this ESN range should be a number 1. See Figure 1 below.
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Illegible Cylinder Block Stamping
Figure 1, Incorrectly Stamped ESN On L9 Engine Cylinder Block.
Resolution
No rework required unless requested by customer.
If a rework is requested by the customer:
Use abrasive pad or sandpaper to remove the ESN engraving from the engine cylinder block. See corresponding Service
Manual. Reference Procedure 100-001 in Section E for ESN stamping location.
Removal of exhaust system components may be required to provide appropriate access to the engraving location.
Use a metal stamping kit to stamp the correct ESN onto the engine cylinder block, as listed on the engine data plate.
Document History
Date
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Details
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Illegible Cylinder Block Stamping
Date
2020-11-9
Details
Module Created
Last Modified: 09-Nov-2020
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