S | Technical Service Bulletin

Technical Service Bulletin: TSB170002

Released Date: 29-Aug-2023

Injector Sleeve Seal Leakage Causing Fuel and Coolant Cross-Contamination

Injector Sleeve Seal Leakage Causing Fuel and
Coolant Cross-Contamination

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

¢ ISX15 CM2250

¢ ISX15 CM2250 SN

¢ ISX15 CM2350 X101

« PowerGen QSX15 CM2250
« PowerGen QSX15 CM2250 ECF
¢ QSX15 CM2250 ECF

¢ QSX15 CM2250 X115

¢ QSX15 CM2350 X105

¢ QSX15 CM2350 X106

¢ X15 CM2350 X116B

¢ X15 CM2350X114B

¢ X15 CM2350 X123B

© X15 CM2450 X124B

¢ X15 CM2450 X134B

Issue
Symptom:

¢ Fuel in coolant system

¢ Coolant in fuel system

e Fault Code 418 (water-in-fuel indicator)
¢ Pressurized cooling system

Root Cause:

¢ Shrinkage of injector sleeve seal material can create a leak path between cylinder head
cooling jacket and injector bore.

Verification

Note : Injector sleeve seal material degradation is only one possible cause of
symptoms discussed in this document. Published troubleshooting procedures must be
followed to determine root cause.

¢ Inspection for fuel or coolant leakage past injector sleeve seal is only to be performed when
other possible sources of contamination, such as fuel heaters, have been ruled out.

¢ Injector sleeve seal leaks can be verified in-chassis by pressure testing cooling system with
injectors removed and monitoring upper edge of injector sleeves for bubbles or coolant
leaking into injector bore. See corresponding Service Manual. Reference Procedure 002-014
in Section 2.

¢ If cylinder head has been removed, injector sleeve seal leaks can be verified by leak testing
coolant passage using service tool, Part Number 3164231. See corresponding Service
Manual. Reference Procedure 002-004 in Section 2.

Figure 1, Small Amount of Coolant Leakage Past Injector Sleeve.

02r00019

Figure 2, Large Amount of Coolant Leakage Past Injector Sleeve.

Resolution

¢ Cylinder head assemblies are not to be replaced if injector sleeve is found leaking.

¢ If leaking injector sleeve is root cause of coolant or fuel cross-contamination, install retaining
ring, Part Number 4312298 in all six injector sleeves. See Service Instructions and Service
Parts Availability Sections below.

« Even if only one injector sleeve is found leaking, retaining rings must be installed in all six
injector sleeves.

¢ Installation of a retaining ring is a onetime repair only. If an injector sleeve is found to be
leaking again and a retaining ring was previously installed, Service Manual Procedure 002-
014 in Section 2 will direct further investigation of cylinder head to better understand severity
of fuel or coolant leak or causes besides sleeve seal material being compromised.

¢ Inspect the fuel tank and filter for contamination.

Service Instructions
¢ See video link below for instructions on installation of retaining rings.

Note : http://tsb.cumminsvirtualcollege.com/TSB170002.aspx
(http://tsb.cumminsvirtualcollege.com/TSB170002.aspx)

¢ See corresponding Service Manual. Reference Procedure 002-014 in Section 2 for instruction
on repairing a leaking injector sleeve using service tool, Part Number 5394735, and retaining
ring, Part Number 4312298.

Service Parts Availability

Table 1, Service Parts

Part Description

Part Number

Quantity

Ring, Retaining

4312298

6

Publications Affected

Table 2, Publications Affected

Bulletin

Manual Type | Engine
yp 9 Number

Procedure
Title

Procedure

Section

Service
Manual

ISX15

M2250 4022250

1SX15

CM2250 SN 4310736

1SX15
CM2350 4310641
X101

QSX15
CM2250 4388739
X115

Injector
Sleeve,
Cylinder
Head

Refer to
Procedure
002-014
(/qs3/pubsys
2/xml/en/proc
edures/132/1
32-002-014-
tr-
mixar5.html)

Refer to
Procedure
002-014
(/qs3/pubsys
2/xml/en/proc
edures/175/1
75-002-
014.html)

Refer to
Procedure
002-014
(/qs3/pubsys
2/xml/en/proc
edures/173/1
73-002-014-
tr-
prix13.html)

Refer to
Procedure
002-014
(/qs3/pubsys
2/xml/en/proc
edures/431/4
31-002-
014.html)

2

Table 2, Publications Affected

Bulletin

Manual Type | Engine
yp 9 Number

Procedure
Title

Procedure

Section

QSX15
CM2350 4332667
X105

QSx15
CM2250 2883557
ECF

QSx15
CM2350 4332712
X106

PowerGen
QSx15 4310664
CM2250

Refer to
Procedure
002-014
(/qs3/pubsys
2/xml/en/proc
edures/250/2
50-002-
014.html)

Refer to
Procedure
002-014
(/qs3/pubsys
2/xml/en/proc
edures/132/1
32-002-014-
tr-vqxi6.html)

Refer to
Procedure
002-014
(/qs3/pubsys
2/xml/en/proc
edures/221/2
21-002-
014.html)

Refer to
Procedure
002-014
(/qs3/pubsys
2/xmi/en/proc
edures/132/1
32-002-014-
tr-
vqxg5na.html
)

Table 2, Publications Affected

Manual Type | Engine Bulletin Procedure Procedure Section
Number Title

Refer to
Procedure
002-014
PowerGen (/qs3/pubsys
Qsx15 4310661 2/xml/en/proc
CM2250 edures/132/1
ECF 32-002-014-
tr-
vqxg5na.html
)

Refer to
Procedure
002-014
(/qs3/pubsys
2/xmi/en/proc
edures/377/3
77-002-
014.html)

Refer to
Procedure
002-014
X15 CM2350 (/qs3/pubsys
X116B 5411186 2/xml/en/proc
edures/453/4
53-002-
014.html)

Refer to

X15
cmM2350x11_ | 5411181
4B

Procedure

002-014

X15 CM2450 (/qs3/pubsys
4

X124B 5504583 2/xml/en/proc

edures/564/5

64-002-

014.html)