TSB220227-111820

Service Bulletin Details

Public Details for: TSB220227-111820

This technical service bulletin describes the verification and resolution of the external lubricating oil leaks can occur at the tappet guide screw. Lubricating oil will be visibly leaking from the tappet guide screw down the exterior of th


- 9999 -

Models from 9999
9999 CUMMINS ISC
9999 CUMMINS ISL
9999 CUMMINS ISL8.9
9999 CUMMINS ISL9
9999 CUMMINS L9 
11/30/22, 8:51 PM
New Installation Procedure for Tappet Guide Screws to Reduce Lubricating Oil Leaks
Technical Service Bulletin
Technical Service Bulletin: TSB220227
Released Date: 18-Nov-2022
New Installation Procedure for Tappet Guide Screws to Reduce Lubricating Oil Leaks
New Installation Procedure for Tappet Guide Screws
to Reduce Lubricating Oil Leaks
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
ISC CM850
ISC8.3 CM2250
ISL CM2150
ISL CM850
ISL8.9 CM2150 L110
ISL9 CM2150 SN
ISL9 CM2250
ISL9 CM2350 L101
ISL9 CM2350 L111
ISLE4 CM850
L8.9 L121
L9 CM2350 L116B
L9 CM2350 L119B
L9 CM2350 L120C
L9 CM2450 L126B
L9 CM2670 L128B
QSC8.3 CM850
QSC8.3 CM850(CM2850)
QSL9 CM2250
QSL9 CM2350 L102
QSL9 CM2350 L118
QSL9 CM850
QSL9 CM850(CM2850)
https://quickserve.cummins.com/qs3/pubsys2/xml/en/tsb/2022/tsb220227.html
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11/30/22, 8:51 PM
New Installation Procedure for Tappet Guide Screws to Reduce Lubricating Oil Leaks
QSL9 M CM2250 L106
Issue
Symptom:
External lubricating oil leaks can occur at the tappet guide screw. Lubricating oil will be visibly
leaking from the tappet guide screw down the exterior of the cylinder block.
Root Cause:
The service manual literature contained incorrect tappet guide screw installation instructions.
Verification
To confirm the lubricating oil leak location, see the corresponding Service Manual. Reference
Procedure 014-024 in Section 14.
Resolution
Tappet guide screw installation procedure has been updated. See corresponding Service Manual.
Reference Procedure 004-015 in Section 4. See Table 2 below.
Reason for Change
The thread locker amount and torque specification in Procedure 004-015 in Section 4 were found
insufficient, which can result in external lubricating oil leaks.
Production Status
Implemented for production. See Table 1.
Table 1, Production Information
ESN First
Build Date1
Plant
9947759
24 August 2022
Rocky Mount Engine Plant
1Engine
build date can be found on engine dataplate.
Publications Affected
Table 2, Publications Affected
Manual Type
Service
Manual
Engine
ISC CM850
Bulletin
Number
4021418
https://quickserve.cummins.com/qs3/pubsys2/xml/en/tsb/2022/tsb220227.html
Procedure
Title
Procedure
Section
Tappet
Refer to
Procedure
004-015
(/qs3/pubsys
2/xml/en/pro
cedures/45/4
5-004-015tr.html)
4
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11/30/22, 8:51 PM
New Installation Procedure for Tappet Guide Screws to Reduce Lubricating Oil Leaks
Table 2, Publications Affected
Manual Type
Service
Manual
Service
Manual
Service
Manual
Service
Manual
Engine
ISC8.3
CM2250
ISL CM850
ISL CM2150
ISL/NS6
2670
Bulletin
Number
4022257
4021418
4021569
4021418
https://quickserve.cummins.com/qs3/pubsys2/xml/en/tsb/2022/tsb220227.html
Procedure
Title
Procedure
Section
Tappet
Refer to
Procedure
004-015
(/qs3/pubsys
2/xml/en/pro
cedures/45/4
5-004-015-triscl10.html)
4
Tappet
Refer to
Procedure
004-015
(/qs3/pubsys
2/xml/en/pro
cedures/45/4
5-004-015tr.html)
4
Tappet
Refer to
Procedure
004-015
(/qs3/pubsys
2/xml/en/pro
cedures/45/4
5-004-015-triscl07.html)
4
Tappet
Refer to
Procedure
004-015
(/qs3/pubsys
2/xml/en/pro
cedures/45/4
5-004-015tr.html)
4
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New Installation Procedure for Tappet Guide Screws to Reduce Lubricating Oil Leaks
Table 2, Publications Affected
Manual Type
Service
Manual
Service
Manual
Service
Manual
Service
Manual
Engine
ISL8.9
CM2150
L110
ISL9
CM2150 SN
ISL9
CM2250
ISL9
CM2350
L101
Bulletin
Number
4358475
4022190
4022257
4310787
https://quickserve.cummins.com/qs3/pubsys2/xml/en/tsb/2022/tsb220227.html
Procedure
Title
Procedure
Section
Tappet
Refer to
Procedure
004-015
(/qs3/pubsys
2/xml/en/pro
cedures/323/
323-004015-tr.html)
4
Tappet
Refer to
Procedure
004-015
(/qs3/pubsys
2/xml/en/pro
cedures/45/4
5-004-015-trisle5.html)
4
Tappet
Refer to
Procedure
004-015
(/qs3/pubsys
2/xml/en/pro
cedures/45/4
5-004-015-triscl10.html)
4
Tappet
Refer to
Procedure
004-015
(/qs3/pubsys
2/xml/en/pro
cedures/185/
185-004015-tr.html)
4
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11/30/22, 8:51 PM
New Installation Procedure for Tappet Guide Screws to Reduce Lubricating Oil Leaks
Table 2, Publications Affected
Manual Type
Service
Manual
Service
Manual
Service
Manual
Service
Manual
Engine
ISL9
CM2350
L111
ISLE4
CM850
L8.9 L121
L9 CM2350
L116B
Bulletin
Number
4367223
4021418
5411055
5411330
https://quickserve.cummins.com/qs3/pubsys2/xml/en/tsb/2022/tsb220227.html
Procedure
Title
Procedure
Section
Tappet
Refer to
Procedure
004-015
(/qs3/pubsys
2/xml/en/pro
cedures/341/
341-004015-tr.html)
4
Tappet
Refer to
Procedure
004-015
(/qs3/pubsys
2/xml/en/pro
cedures/45/4
5-004-015tr.html)
4
Tappet
Refer to
Procedure
004-015
(/qs3/pubsys
2/xml/en/pro
cedures/447/
447-004015.html)
4
Tappet
Refer to
Procedure
004-015
(/qs3/pubsys
2/xml/en/pro
cedures/459/
459-004015.html)
4
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New Installation Procedure for Tappet Guide Screws to Reduce Lubricating Oil Leaks
Table 2, Publications Affected
Manual Type
Service
Manual
Service
Manual
Service
Manual
Service
Manual
Engine
L9 CM2350
L119B
L9 CM2350
L120C
L9 CM2450
L126B
QSC8.3
CM850
Bulletin
Number
5411456
5504199
5613077
4021418
https://quickserve.cummins.com/qs3/pubsys2/xml/en/tsb/2022/tsb220227.html
Procedure
Title
Procedure
Section
Tappet
Refer to
Procedure
004-015
(/qs3/pubsys
2/xml/en/pro
cedures/459/
459-004015.html)
4
Tappet
Refer to
Procedure
004-015
(/qs3/pubsys
2/xml/en/pro
cedures/560/
560-004015.html)
4
Tappet
Refer to
Procedure
004-015
(/qs3/pubsys
2/xml/en/pro
cedures/583/
583-004015.html)
4
Tappet
Refer to
Procedure
004-015
(/qs3/pubsys
2/xml/en/pro
cedures/45/4
5-004-015tr.html)
4
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11/30/22, 8:51 PM
New Installation Procedure for Tappet Guide Screws to Reduce Lubricating Oil Leaks
Table 2, Publications Affected
Manual Type
Service
Manual
Service
Manual
Service
Manual
Service
Manual
Engine
QSC8.3
CM850(CM2
850)
QSL
QSL9
CM850
QSL9
CM850(CM2
850)
Bulletin
Number
4021418
4022256
4021418
4021418
https://quickserve.cummins.com/qs3/pubsys2/xml/en/tsb/2022/tsb220227.html
Procedure
Title
Procedure
Section
Tappet
Refer to
Procedure
004-015
(/qs3/pubsys
2/xml/en/pro
cedures/45/4
5-004-015tr.html)
4
Tappet
Refer to
Procedure
004-015
(/qs3/pubsys
2/xml/en/pro
cedures/45/4
5-004-015-trqslt4i.html)
4
Tappet
Refer to
Procedure
004-015
(/qs3/pubsys
2/xml/en/pro
cedures/45/4
5-004-015tr.html)
4
Tappet
Refer to
Procedure
004-015
(/qs3/pubsys
2/xml/en/pro
cedures/45/4
5-004-015tr.html)
4
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11/30/22, 8:51 PM
New Installation Procedure for Tappet Guide Screws to Reduce Lubricating Oil Leaks
Table 2, Publications Affected
Manual Type
Service
Manual
Engine
QSL9
CM2250
QSL9
CM2350
L102
Service
Manual
QSL9
CM2350
L118
Service
Manual
QSL9 M
CM2250
L106
Service
Manual
Bulletin
Number
4022256
4332796
4388673
4022256
Procedure
Title
Procedure
Section
Tappet
Refer to
Procedure
004-015
(/qs3/pubsys
2/xml/en/pro
cedures/45/4
5-004-015-trqslt4i.html)
4
Tappet
Refer to
Procedure
004-015
(/qs3/pubsys
2/xml/en/pro
cedures/261/
261-004015-tr.html)
4
Tappet
Refer to
Procedure
004-015
(/qs3/pubsys
2/xml/en/pro
cedures/421/
421-004015.html)
4
Tappet
Refer to
Procedure
004-015
(/qs3/pubsys
2/xml/en/pro
cedures/45/4
5-004-015-trqslt4i.html)
4
Document History
Date
https://quickserve.cummins.com/qs3/pubsys2/xml/en/tsb/2022/tsb220227.html
Details
8/9
11/30/22, 8:51 PM
New Installation Procedure for Tappet Guide Screws to Reduce Lubricating Oil Leaks
Date
2022-11-8
Details
Module Created
Last Modified: 18-Nov-2022
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