TSB140168-120114

New Cummins® Service Tool Fuel Return Hose and Updated Procedure for ISX and QS...
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Technical Service Bulletin Number
TSB140168
Technical Service Bulletin
Subject
New Cummins® Service Tool Fuel Return Hose and Updated Procedure for ISX and QSX
Engines with Common Rail Fuel Systems
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
This document announces a new Cummins® service tool fuel return hose and updated service
manual procedure.
Product Affected






















ISX12/ISX11.9 CM2250
ISX12 CM2350 X102
ISX15 CM2250
ISX15 CM2250 SN
ISX15 CM2350 X101
QSX11.9 CM2250 ECF
QSX15 CM2350 X105
QSX15 CM2250 ECF
QSX15 CM2350 X106
PowerGen QSX15 CM2250
PowerGen QSX15 CM2250 ECF
Reason for Change
https://quickserve.cummins.com/qs3/pubsys2/xml/en/tsb/2014/tsb140168.html
1/4/2015
New Cummins® Service Tool Fuel Return Hose and Updated Procedure for ISX and QS...
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To decrease the occurrence of falsely identifying leaking fuel pressure relief valves.
Service Tools Available
To complete the fuel pressure relief valve return flow measurement at the fuel rail, a new
Cummins® service tool has been released. Cummins® service tool, fuel return hose, Part
Number 5299319, must be used to perform the fuel pressure relief valve return flow
measurement.
Publications Affected
The fuel pressure relief valve return flow test has been revised to state that the fuel pressure
relief valve return flow should be measured at the fuel rail and not at the fuel drain manifold.
Measurement of the fuel pressure relief valve return flow at the fuel drain manifold is
acceptable if there are accessibility issues. If the fuel pressure relief valve return flow is
measured at the fuel drain manifold and the fuel flow is found out of specification, the fuel
pressure relief valve return flow measurement must be repeated at the fuel rail.
The following procedures have been revised:






















Refer to ISX12/ISX11.9 CM2250 Service Manual, Bulletin 2883445. See Procedure 005236 in Section 5.
Refer to ISX12 CM2350 X102 Service Manual, Bulletin 4310646. See Procedure 005236 in Section 5.
Refer to ISX15 CM2250 Service Manual, Bulletin 4022250. See Procedure 005-236 in
Section 5.
Refer to ISX15 CM2250 SN Service Manual, Bulletin 4310736. See Procedure 005-236
in Section 5.
Refer to ISX15 CM2350 X101 Service Manual, Bulletin 4310641. See Procedure 005236 in Section 5.
Refer to QSX11.9 CM2250 ECF Service Manual, Bulletin 2883561. See Procedure 005236 in Section 5.
Refer to QSX15 CM2350 X105 Service Manual, Bulletin 4332667. See Procedure 005236 in Section 5.
Refer to QSX15 CM2250 ECF Service Manual, Bulletin 2883557. See Procedure 005236 in Section 5.
Refer to QSX15 CM2350 X106 Service Manual, Bulletin 4332712. See Procedure 005236 in Section 5.
Refer to PowerGen QSX15 CM2250 Service Manual, Bulletin 4310664. See Procedure
005-236 in Section 5.
Refer to PowerGen QSX15 CM2250 ECF Service Manual, Bulletin 4310661. See
Procedure 005-236 in Section 5.
Document History
Date
2014-12-1
Details
Module Created
https://quickserve.cummins.com/qs3/pubsys2/xml/en/tsb/2014/tsb140168.html
1/4/2015
New Cummins® Service Tool Fuel Return Hose and Updated Procedure for ISX and QS...
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Last Modified: 19-Dec-2014
Copyright © 2000-2010 Cummins Inc. All rights reserved.
https://quickserve.cummins.com/qs3/pubsys2/xml/en/tsb/2014/tsb140168.html
1/4/2015