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Topic Number 06T5-18

Revision Level

Planned Mailpack Date NOVEMBER 2006

Group Number 05

Expiration Date (U.S. and Canada)

Expiration Date (International)

Engine Family Signature, ISX, QSX15 Signature, ISX, QSX15 6C, C8.3 ISL, QSL9 Design Application All CPL From

Fuel System Signature, ISX, QSX15 Signature, ISX CM870 CAPS - ISC, QSC8.3, ISL, QSL9 CAPS - ISC, QSC8.3, ISL, QSL9 Market Application All Engine Serial Number Range To

Service/Parts Topics New Fuel Lift Pump Gasket

Publications Affected by This Service/Parts Topic Engine Operation and Troubleshooting Maintenance and Repair Shop Other 3672142 2, 4056480 2, 4056481 2, 4056495 2, 4056560 2 3672142 2, 4056480 2, 4056481 2, 4056495 2, 4056560 2 3672142 2,

Signature

ISX

QSX15

Publications Affected by This Service/Parts Topic Engine Operation and Troubleshooting Maintenance and Repair Shop Other 4056480 2, 4056481 2, 4056495 2, 4056560 2 ISC 3672137 2, 3672196 2, 3672197 2 3672137 2, 3672196 2, 3672197 2 3672137 2, 3672196 2, 3672197 2 3672137 2, 3672196 2, 3672197 2

QSC8.3

ISL

QSL9 NOTE: Publications identified as Other include the following: 1 Master Repair Manual, 2Parts Catalog, 3Specifications Manual, 4 Alternative Repair Manual, 5 Wiring Diagram, 6Features Manual, and 7Service Manual. Warranty Impact Yes

The information in this document authorizes specific changes to the repair practice for failures covered under current product warranty coverages.

This Service/Parts Topic alerts the field to an alternate repair for fuel lift pump assemblies on ISC CM554, QSC 8.3 CM554, ISL CM554, QSL9 CM554, Signature, ISX, and QSX15 engines. The gasket was released to repair leaks between the fuel lift pump housing and mounting adapter. NOTE: The warrantable repair for a fuel lift pump leak is replacement of the lift pump assembly. The practice described below is also approved as an alternate warranty repair.

Because of the fuel lift pump design differences, two service gaskets have been released. The Part Numbers are 4928511 and 4928512. These gaskets are not interchangeable. However, ISC/ISL CM554 engines built after approximately ESN 46319395 and ISX engines built after ESN 79055000 can use fuel lift pump gasket Part Number 4928512. To identify the correct gasket, inspect the face of the lift pump housing:

· ·

Remove the three bolts on the top of the lift pump mounting adapter. Check for a support rib (see the new-style lift pump gasket illustration).

Early-Style Lift Pump Gasket

This lift pump housing takes gasket Part Number 4928511.

New-Style Lift Pump Gasket

This lift pump housing takes gasket Part Number 4928512. The gasket is located between the adapter and the lift pump housing.

The correct gasket can also be determined by the lift pump serial number located on the side of the lift pump housing or on the lift pump mounting adapter. NOTE: The lift pump may need to be removed to read the serial number.

ISX Fuel Lift Pump Serial Number

The ISX lift pump serial number is interpreted as follows: 1. 2. 3. 4. 5. Last four characters of the supplier part number Year Month Day Shift

For example, 374SO6B29A is an ISX lift pump built on February 29, 2006 during the first shift. This lift pump will use gasket Part Number 4928512 because it is after the dates listed in the table below. The early-style lift pump service gasket, Part Number 4928511, can only be used on lift pump, Part Number 4076857, and lift pump part numbers built before the dates in the table below. The new-style lift pump service gasket, Part Number 4928512, can only be used on lift pump part numbers built on or after the dates listed in the table below.

Cummins® Lift Pump Part Number 4062664 4062665 4087974 4087975 4088507 4076580 4076581

Lift Pump Date Code 11/23/04-04L23 11/23/04-04L23 11/23/04-04L23 11/23/04-04L23 06/09/04-04F09 11/23/04-04L23 11/23/04-04L23

ISC/ISL Fuel Lift Pump Serial Number

The ISC/ISL lift pump serial number is interpreted as follows: 1. 2. 3. 4. 5. Last four digits of the Cummins part number Year Month Day Shift

For example, 90850H29A is an ISC lift pump built on August 29, 2000 during the first shift. The lift pump will use gasket, Part Number 4928511, because it is before the dates listed in the table below.

The early-style service gasket, Part Number 4928511, can only be used on lift pumps, Part Numbers 3944384, 3944386, 3945502, and lift pump part numbers built before the dates in the table below. The new-style service gasket, Part Number 4928512, can only be used on lift pump part numbers built on or after the dates listed in the table below. Cummins® Lift Pump Part Number 3949093 3949085 3949086 3939894 3939898 Lift Pump Date Code 3/15/2003-03C15 5/1/2003-03E01 5/1/2003-03E01 5/1/2003-03E01 5/1/2003-03E01

NOTE: This is a product improvement and not subject to campaign. Last Modified: 09-Aug-2006 Copyright ©2006 Cummins Inc. All rights reserved

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