TSB200209-102120

New Lead-Free Connecting Rod Bearing
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Technical Service Bulletin
Technical Service Bulletin:
Released Date: 21-Oct-2020
TSB200209
New Lead-Free Connecting Rod Bearing
New Lead-Free Connecting Rod Bearing
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
•
•
•
•
•
•
•
•
•
•
QSC8.3
QSL9
ISC
ISC8.3
ISL
ISLe
ISL9
L8.9
ISL8.9
L9
Description of Change
This document announces the release of new lead-free connecting rod bearings. Some
engines for non-stop-start applications began manufacturing with different connecting rod
bearings beginning in June 2020.
Key differences:
• Released bearing material offers more debris robustness
• Connecting rod bearings will have a dark grey overlay
• Connecting rod bearings will have staked tang design and ID bar-codes
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New Lead-Free Connecting Rod Bearing
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Reason for Change
• New lead-free rod bearings were developed to improve debris robustness.
Service Instructions
• Due to overlay oxidation, upper connecting rod bearing may appear green. See
Figure 1. This is not considered detrimental for bearing durability or performance.
Follow existing service guideline for re-use criteria.
• Existing and new part numbers are not to be mixed, upper and lower rod bearings
must be replaced as a set.
Figure 1, Green appearance of upper connecting rod bearing, Part Number 5566472,
due to overlay oxidation.
Service Parts Availability
Service parts are available. See Table 1 for part numbers.
Table 1, Service Parts
Part
Description
Existing Part
Number
Obsolete
Superseded
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New Part
Number
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Table 1, Service Parts
Part
Description
Existing Part
Number
Obsolete
Superseded
New Part
Number
Upper
connecting rod
bearing
5283365
No
Yes
5566472
Lower
connecting rod
bearing
5283364
No
Yes
5566471
Part Identification
• Connecting rod bearings can be identified by their part numbers. See below.
New Upper Rod Bearing, Part Number 5566472.
Figure 2, 5566472 ID Appearance, OD Appearance, Part Number Stamping
New Lower Rod Bearing, Part Number 5566471.
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10/27/2020
New Lead-Free Connecting Rod Bearing
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Figure 3, 5566471 ID Appearance, OD Appearance, Part Number Stamping
Part Inventory Action
• Use existing part number inventory before using the new part number.
• Do not mix old and new rod bearings between cylinders for individual engines.
Associated Publications
Manual Type
Procedure Title
Procedure
Service Manual
Bearings, Connecting Rod
001-005
Document History
Date
2020-10-16
Details
Module Created
Last Modified: 21-Oct-2020
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10/27/2020
New Lead-Free Connecting Rod Bearing
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https://quickserve.cummins.com/qs3/pubsys2/xml/en/tsb/2020/tsb200209.html
10/27/2020