22E015 – High Pressure Fuel Rail Assembly May Leak Fuel – 2021 Freightliner M2, 2020 Kenworth T3, & 2018 International SR525 Emergency Vehicles

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OMB Control No.: 2127-0004
Part 573 Safety Recall Report 22E-015
The information contained in this report was submitted pursuant to 49 CFR §573
Manufacturer Name : Marion Body Works Inc.
Submission Date : MAY 04, 2022
NHTSA Recall No. : 22E-015
Manufacturer Recall No. : 20E-032
Manufacturer Information :
Manufacturer Name : Marion Body Works Inc.
Address : 211 West Ramsdell St.
Marion WI 54950
Company phone : 715-754-5261
Population :
Number of potentially involved : 3
Estimated percentage with defect : 100 %
Equipment Information :
Brand / Trade 1 : International
Model : SR525
Part No. : D0K3003BX03
Size : NR
Function : Diesel Engine
Descriptive Information : These engines are equipped with High Pressure Common Rail fuel systems which
includes a high pressure fuel rail. The production begin and end dates were
determined from the manufacturing and quality records that established the
population of high pressure rails and engines that may contain the defect. The
recall consists of engines installed in bus, school bus, emergency vehicle and
recreational vehicles due to relatively low detectability of the potential hazard
and relatively high vulnerability to potential injury in those applications.
International SR525 2018
Freightliner M2 2021
Kenworth T3 Series 2020
Production Dates : JAN 02, 2017 – OCT 16, 2020
Part 573 Safety Recall Report 22E-015 Page 2
The information contained in this report was submitted pursuant to 49 CFR §573
Brand / Trade 2 : Kenworth
Model : T3 Series
Part No. : D563025BX03
Size : NR
Function : NR
Descriptive Information : These engines are equipped with High Pressure Common Rail fuel systems which
includes a high pressure fuel rail. The production begin and end dates were
determined from the manufacturing and quality records that established the
population of high pressure rails and engines that may contain the defect. The
recall consists of engines installed in bus, school bus, emergency vehicle and
recreational vehicles due to relatively low detectability of the potential hazard
and relatively high vulnerability to potential injury in those applications.
International SR525 2018
Freightliner M2 2021
Kenworth T3 Series 2020
Production Dates : JAN 02, 2017 – OCT 16, 2020
Brand / Trade 3 : Freightliner
Model : M2
Part No. : D563025BX03
Size : NR
Function : NR
Descriptive Information : These engines are equipped with High Pressure Common Rail fuel systems which
includes a high pressure fuel rail. The production begin and end dates were
determined from the manufacturing and quality records that established the
population of high pressure rails and engines that may contain the defect. The
recall consists of engines installed in bus, school bus, emergency vehicle and
recreational vehicles due to relatively low detectability of the potential hazard
and relatively high vulnerability to potential injury in those applications.
International SR525 2018
Freightliner M2 2021
Kenworth T3 Series 2020
Production Dates : JAN 02, 2017 – OCT 16, 2020
Description of Defect :
Description of the Defect : The fuel rail assembly may develop leaks, which may result in an undetected
prolonged diesel fuel spray.
FMVSS 1 : NR
Part 573 Safety Recall Report 22E-015 Page 3
The information contained in this report was submitted pursuant to 49 CFR §573
FMVSS 2 : NR
Description of the Safety Risk : A leak involving spraying/misting fuel in the presence of an ignition source
may increase the risk of fire.
Description of the Cause : The rail end sealing bores in the fuel rail may have undersized pilot bores for
the sealing washer, thus preventing the washer from properly seating,
potentially resulting in inadequate load for the joint to remain properly sealed
in service.
Identification of Any Warning
that can Occur :
The operator may see or smell diesel fuel. In some cases, the check engine lamp
may illuminate.
Involved Components :
Component Name : Accumulator
Component Description : High Pressure Fuel Rail Assembly
Component Part Number : 4307034
Component Name : Accumulator
Component Description : High Pressure Fuel Rail Assembly
Component Part Number : 4307377
Supplier Identification :
Component Manufacturer
Name : Cummins
Address : 500 Jackson Street
Columbus Indiana 47201
Country : United States
Chronology :
February 10, 2021 – A field service technician reported to Cummins that eight buses belonging to a single
customer had been repaired since December 2020 for leaks at sealing washers in the fuel rail.
February 11- March 1, 2021 – Cummins investigated the cause of the leaks with the supplier of the rail and
began an investigation of field warranty claims. Cummins conducted an initial Product Safety Hazard Analysis.
Part 573 Safety Recall Report 22E-015 Page 4
The information contained in this report was submitted pursuant to 49 CFR §573
March 3 – April 12, 2021 – Cummins escalated the issue through its Product Safety Defect Board process,
gathered additional data and revised the Product Safety Hazard Analysis. Cummins issued a Technical Service
Bulletin (TSB210055) on March 4, 2021 to allow the field to replace rails that have washer leaks with a
different rail and their associated fuel lines. (TSB210055 was submitted to NHTSA on April 7, 2021 in
accordance with 49 CFR Part 579.5.)
April 13, 2021 – Based upon the results of the investigation, Cummins’ Product Defect Safety Board decided to
conduct a safety campaign on engines installed in buses, school buses, emergency vehicle and recreational
vehicle applications.
Description of Remedy :
Description of Remedy Program : Contact the nearest Cummins Distributor or authorized Warranty Dealer
to arrange to have this campaign performed on your engine. The
distributor or dealer will work with you to schedule the best date to
complete this repair.
A recall-specific reimbursement plan will be provided in the Recall Portal
for those units not covered by the manufacturer’s limited warranty.
The rail threads will be inspected for damage. If damage is found on the
threads, the rail will be replaced with a rail of a different design. The fuel
lines will also be replaced with lines of a different design if the rail is
replaced. If no damage is found on the threads, new crush washers will be
installed.
How Remedy Component Differs
from Recalled Component :
For units having no thread damage, the technician will be instructed to
place a paint dot somewhere on the rail to indicate that the repair has
been completed. For units that do have thread damage, the replacement
rail and fuel lines will have unique part numbers. The replacement rail and
lines are also visibly different.
Identify How/When Recall Condition
was Corrected in Production :
The rail manufacturing statistical process control for the pilot bores was
confirmed in control after October 19, 2020.
Recall Schedule :
Description of Recall Schedule : Cummins expects to notify affected OEMs no later than April 30, 2021.
Cummins will conduct the recall and notify owners. The timing of owner
notification will be determined in consultation with the affected OEMs
Cummins expects to begin sending interim notification letters on June 19,
2021 to owners for which Cummins has received owner addresses. When
Cummins is ready to implement the remedy campaign, Cummins will
notify all owners for which it has received owner information. Owners
who previously received an interim letter notification will receive a
Part 573 Safety Recall Report 22E-015 Page 5
The information contained in this report was submitted pursuant to 49 CFR §573
second notification. Cummins anticipates mailing owner letters
communicating the availability of the remedy during July 2021.
Planned Dealer Notification Date : MAR 03, 2022 – MAR 07, 2022
Planned Owner Notification Date : MAR 03, 2022 – MAR 07, 2022
Purchaser Information :
The following manufacturers purchased this defective/noncompliant equipment for possible use or
installation in new motor vehicles or new items of motor vehicle equipment:
Name : NR
Address : NR
NR
Country : NR
Company Phone : NR
* NR – Not Reported

**************************************************************************************************************

OMB Control No.: 2127-0004
Part 573 Safety Recall Report 22E-015
The information contained in this report was submitted pursuant to 49 CFR §573
Manufacturer Name : Marion Body Works Inc.
Submission Date : MAR 17, 2022
NHTSA Recall No. : 22E-015
Manufacturer Recall No. : 20E-032
Manufacturer Information :
Manufacturer Name : Marion Body Works Inc.
Address : 211 West Ramsdell St.
Marion WI 54950
Company phone : 715-754-5261
Population :
Number of potentially involved : 3
Estimated percentage with defect : 100 %
Equipment Information :
Brand / Trade 1 : International
Model : SR525
Part No. : D0K3003BX03
Size : NR
Function : Diesel Engine
Descriptive Information : These engines are equipped with High Pressure Common Rail fuel systems which
includes a high pressure fuel rail. The production begin and end dates were
determined from the manufacturing and quality records that established the
population of high pressure rails and engines that may contain the defect. The
recall consists of engines installed in bus, school bus, emergency vehicle and
recreational vehicles due to relatively low detectability of the potential hazard
and relatively high vulnerability to potential injury in those applications.
International SR525 2018
Freightliner M2 2021
Kenworth T3 Series 2020
Production Dates : JAN 02, 2017 – OCT 16, 2020
Part 573 Safety Recall Report 22E-015 Page 2
The information contained in this report was submitted pursuant to 49 CFR §573
Brand / Trade 2 : Freightliner
Model : M2
Part No. : D563025BX03
Size : NR
Function : NR
Descriptive Information : These engines are equipped with High Pressure Common Rail fuel systems which
includes a high pressure fuel rail. The production begin and end dates were
determined from the manufacturing and quality records that established the
population of high pressure rails and engines that may contain the defect. The
recall consists of engines installed in bus, school bus, emergency vehicle and
recreational vehicles due to relatively low detectability of the potential hazard
and relatively high vulnerability to potential injury in those applications.
International SR525 2018
Freightliner M2 2021
Kenworth T3 Series 2020
Production Dates : JAN 02, 2017 – OCT 16, 2020
Brand / Trade 3 : Kenworth
Model : T3 Series
Part No. : D563025BX03
Size : NR
Function : NR
Descriptive Information : These engines are equipped with High Pressure Common Rail fuel systems which
includes a high pressure fuel rail. The production begin and end dates were
determined from the manufacturing and quality records that established the
population of high pressure rails and engines that may contain the defect. The
recall consists of engines installed in bus, school bus, emergency vehicle and
recreational vehicles due to relatively low detectability of the potential hazard
and relatively high vulnerability to potential injury in those applications.
International SR525 2018
Freightliner M2 2021
Kenworth T3 Series 2020
Production Dates : JAN 02, 2017 – OCT 16, 2020
Description of Defect :
Description of the Defect : The fuel rail assembly may develop leaks, which may result in an undetected
prolonged diesel fuel spray.
FMVSS 1 : NR
Part 573 Safety Recall Report 22E-015 Page 3
The information contained in this report was submitted pursuant to 49 CFR §573
FMVSS 2 : NR
Description of the Safety Risk : A leak involving spraying/misting fuel in the presence of an ignition source
may increase the risk of fire.
Description of the Cause : The rail end sealing bores in the fuel rail may have undersized pilot bores for
the sealing washer, thus preventing the washer from properly seating,
potentially resulting in inadequate load for the joint to remain properly sealed
in service.
Identification of Any Warning
that can Occur :
The operator may see or smell diesel fuel. In some cases, the check engine lamp
may illuminate.
Involved Components :
Component Name : Accumulator
Component Description : High Pressure Fuel Rail Assembly
Component Part Number : 4307034
Component Name : Accumulator
Component Description : High Pressure Fuel Rail Assembly
Component Part Number : 4307377
Supplier Identification :
Component Manufacturer
Name : Senior Flexonics – Land Vehicles
Address : 300 East Devon Avenue
Bartlett Illinois 60103
Country : United States
Chronology :
February 10, 2021 – A field service technician reported to Cummins that eight buses belonging to a single
customer had been repaired since December 2020 for leaks at sealing washers in the fuel rail.
February 11- March 1, 2021 – Cummins investigated the cause of the leaks with the supplier of the rail and
began an investigation of field warranty claims. Cummins conducted an initial Product Safety Hazard Analysis.
Part 573 Safety Recall Report 22E-015 Page 4
The information contained in this report was submitted pursuant to 49 CFR §573
March 3 – April 12, 2021 – Cummins escalated the issue through its Product Safety Defect Board process,
gathered additional data and revised the Product Safety Hazard Analysis. Cummins issued a Technical Service
Bulletin (TSB210055) on March 4, 2021 to allow the field to replace rails that have washer leaks with a
different rail and their associated fuel lines. (TSB210055 was submitted to NHTSA on April 7, 2021 in
accordance with 49 CFR Part 579.5.)
April 13, 2021 – Based upon the results of the investigation, Cummins’ Product Defect Safety Board decided to
conduct a safety campaign on engines installed in buses, school buses, emergency vehicle and recreational
vehicle applications.
Description of Remedy :
Description of Remedy Program : Contact the nearest Cummins Distributor or authorized Warranty Dealer
to arrange to have this campaign performed on your engine. The
distributor or dealer will work with you to schedule the best date to
complete this repair.
A recall-specific reimbursement plan will be provided in the Recall Portal
for those units not covered by the manufacturer’s limited warranty.
The rail threads will be inspected for damage. If damage is found on the
threads, the rail will be replaced with a rail of a different design. The fuel
lines will also be replaced with lines of a different design if the rail is
replaced. If no damage is found on the threads, new crush washers will be
installed.
How Remedy Component Differs
from Recalled Component :
For units having no thread damage, the technician will be instructed to
place a paint dot somewhere on the rail to indicate that the repair has
been completed. For units that do have thread damage, the replacement
rail and fuel lines will have unique part numbers. The replacement rail and
lines are also visibly different.
Identify How/When Recall Condition
was Corrected in Production :
The rail manufacturing statistical process control for the pilot bores was
confirmed in control after October 19, 2020.
Recall Schedule :
Description of Recall Schedule : Cummins expects to notify affected OEMs no later than April 30, 2021.
Cummins will conduct the recall and notify owners. The timing of owner
notification will be determined in consultation with the affected OEMs
Cummins expects to begin sending interim notification letters on June 19,
2021 to owners for which Cummins has received owner addresses. When
Cummins is ready to implement the remedy campaign, Cummins will
notify all owners for which it has received owner information. Owners
who previously received an interim letter notification will receive a
Part 573 Safety Recall Report 22E-015 Page 5
The information contained in this report was submitted pursuant to 49 CFR §573
second notification. Cummins anticipates mailing owner letters
communicating the availability of the remedy during July 2021.
Planned Dealer Notification Date : MAR 03, 2022 – MAR 07, 2022
Planned Owner Notification Date : MAR 03, 2022 – MAR 07, 2022
Purchaser Information :
The following manufacturers purchased this defective/noncompliant equipment for possible use or
installation in new motor vehicles or new items of motor vehicle equipment:
Name : NR
Address : NR
NR
Country : NR
Company Phone : NR
* NR – Not Reported

**************************************************************************************************************

OMB Control No.: 2127-0004
Part 573 Safety Recall Report 22E-015
The information contained in this report was submitted pursuant to 49 CFR §573
Manufacturer Name : Marion Body Works Inc.
Submission Date : MAR 01, 2022
NHTSA Recall No. : 22E-015
Manufacturer Recall No. : 20E-032
Manufacturer Information :
Manufacturer Name : Marion Body Works Inc.
Address : 211 West Ramsdell St.
Marion WI 54950
Company phone : 715-754-5261
Population :
Number of potentially involved : 3
Estimated percentage with defect : 100 %
Equipment Information :
Brand / Trade 1 : Cummins, Inc.
Model : L9
Part No. : D0K3003BX03
Size : NR
Function : Diesel Engine
Descriptive Information : These engines are equipped with High Pressure Common Rail fuel systems which
includes a high pressure fuel rail. The production begin and end dates were
determined from the manufacturing and quality records that established the
population of high pressure rails and engines that may contain the defect. The
recall consists of engines installed in bus, school bus, emergency vehicle and
recreational vehicles due to relatively low detectability of the potential hazard
and relatively high vulnerability to potential injury in those applications.
Production Dates : JAN 02, 2017 – OCT 16, 2020
Description of Defect :
Description of the Defect : The fuel rail assembly may develop leaks, which may result in an undetected
prolonged diesel fuel spray.
FMVSS 1 : NR
FMVSS 2 : NR
Description of the Safety Risk : A leak involving spraying/misting fuel in the presence of an ignition source
may increase the risk of fire.
Description of the Cause : The rail end sealing bores in the fuel rail may have undersized pilot bores for
the sealing washer, thus preventing the washer from properly seating,
potentially resulting in inadequate load for the joint to remain properly sealed
in service.
Part 573 Safety Recall Report 22E-015 Page 2
The information contained in this report was submitted pursuant to 49 CFR §573
Identification of Any Warning
that can Occur :
The operator may see or smell diesel fuel. In some cases, the check engine lamp
may illuminate.
Involved Components :
Component Name : Accumulator
Component Description : High Pressure Fuel Rail Assembly
Component Part Number : 4307034
Component Name : Accumulator
Component Description : High Pressure Fuel Rail Assembly
Component Part Number : 4307377
Supplier Identification :
Component Manufacturer
Name : Senior Flexonics – Land Vehicles
Address : 300 East Devon Avenue
Bartlett Illinois 60103
Country : United States
Chronology :
February 10, 2021 – A field service technician reported to Cummins that eight buses belonging to a single
customer had been repaired since December 2020 for leaks at sealing washers in the fuel rail.
February 11- March 1, 2021 – Cummins investigated the cause of the leaks with the supplier of the rail and
began an investigation of field warranty claims. Cummins conducted an initial Product Safety Hazard Analysis.
March 3 – April 12, 2021 – Cummins escalated the issue through its Product Safety Defect Board process,
gathered additional data and revised the Product Safety Hazard Analysis. Cummins issued a Technical Service
Bulletin (TSB210055) on March 4, 2021 to allow the field to replace rails that have washer leaks with a
different rail and their associated fuel lines. (TSB210055 was submitted to NHTSA on April 7, 2021 in
accordance with 49 CFR Part 579.5.)
April 13, 2021 – Based upon the results of the investigation, Cummins’ Product Defect Safety Board decided to
Part 573 Safety Recall Report 22E-015 Page 3
The information contained in this report was submitted pursuant to 49 CFR §573
conduct a safety campaign on engines installed in buses, school buses, emergency vehicle and recreational
vehicle applications.
Description of Remedy :
Description of Remedy Program : A recall-specific reimbursement plan will be provided in the Recall Portal
for those units not covered by the manufacturer’s limited warranty.
The rail threads will be inspected for damage. If damage is found on the
threads, the rail will be replaced with a rail of a different design. The fuel
lines will also be replaced with lines of a different design if the rail is
replaced. If no damage is found on the threads, new crush washers will be
installed.
How Remedy Component Differs
from Recalled Component :
For units having no thread damage, the technician will be instructed to
place a paint dot somewhere on the rail to indicate that the repair has
been completed. For units that do have thread damage, the replacement
rail and fuel lines will have unique part numbers. The replacement rail and
lines are also visibly different.
Identify How/When Recall Condition
was Corrected in Production :
The rail manufacturing statistical process control for the pilot bores was
confirmed in control after October 19, 2020.
Recall Schedule :
Description of Recall Schedule : Cummins expects to notify affected OEMs no later than April 30, 2021.
Cummins will conduct the recall and notify owners. The timing of owner
notification will be determined in consultation with the affected OEMs
Cummins expects to begin sending interim notification letters on June 19,
2021 to owners for which Cummins has received owner addresses. When
Cummins is ready to implement the remedy campaign, Cummins will
notify all owners for which it has received owner information. Owners
who previously received an interim letter notification will receive a
second notification. Cummins anticipates mailing owner letters
communicating the availability of the remedy during July 2021.
Planned Dealer Notification Date : MAR 03, 2022 – MAR 07, 2022
Planned Owner Notification Date : MAR 03, 2022 – MAR 07, 2022
Purchaser Information :
The following manufacturers purchased this defective/noncompliant equipment for possible use or
installation in new motor vehicles or new items of motor vehicle equipment:
Part 573 Safety Recall Report 22E-015 Page 4
The information contained in this report was submitted pursuant to 49 CFR §573
Name : NR
Address : NR
NR
Country : NR
Company Phone : NR
* NR – Not Reported

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