24E038 – C7032 – Fuel Filter Hoses May Disconnect and Leak Fuel – Cummins L9 Diesel Engines

Recall Acknowledgement

RCAK-24E038-1379.pdf 645.686KB

573 Defect Recall 573 Report

RCLRPT-24E038-2882.PDF 215.952KB

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OMB Control No.: 2127-0004
Part 573 Safety Recall Report 24E-038
The information contained in this report was submitted pursuant to 49 CFR §573
Manufacturer Name : Submission Date :
Cummins, Inc. MAY 21, 2024 NHTSA Recall No. : 24E-038 Manufacturer Recall No. : C7032
Manufacturer Information :
Manufacturer Name : Cummins, Inc.
Address : Box 3005
Mail Code COB118 Columbus IN 47202-3005
Company phone : 812-377-5000
Population :
Number of potentially involved : 230 Estimated percentage with defect : 100 %
Equipment Information : Brand / Trade 1 :
Model : Cummins Inc L9 Part No. : D563027BX03 Size : N/A Function : Diesel Engine
Descriptive Information : This recall covers certain Cummins L9 engines equipped with a remote Stage 2 fuel filter (Option Numbers FF90943 and FF90944), which includes two pressurized fuel hoses. The recall consists of the entire population of the engines built between the identified production dates that were equipped with certain fuel hose part numbers. The subject engines were sold to various OEMs for installation in Transit Buses and Recreational Vehicles. The production “Begin” and “End” dates provided herein are based on the dates listed on the affected engines’ dataplates (the engine “build date”).
Production Dates : NOV 07, 2022 – MAR 29, 2023
Description of Defect :
Description of the Defect : The remote fuel filter hoses installed on the subject engines can become separated from the fuel fitting resulting in fuel leaks and lack of fuel supply to the engine.
FMVSS 1 : NR FMVSS 2 : NR
Description of the Safety Risk : A fuel hose that becomes disconnected will result in an engine stall,
increasing the risk of a crash. A fuel leak in the presence of an ignition source may increase the risk of a fire.
Description of the Cause : The subject hoses may have insufficient crimping of the connector, possibly
resulting in insufficient hose retention. Part 573 Safety Recall Report 24E-038 Page 2 Identification of Any Warning
that can Occur : Persons operating in or around the vehicle may see smoke or other visible signs of a fuel leak or smell diesel fuel. Involved Components : Component Name : Hose, Fuel
Component Description : Fuel carrying hose with quick connect fittings Component Part Number : 6316757 and 6316899 Supplier Identification : Component Manufacturer
Name : N/A Address : NR
NR
Country : NR Chronology :
3/27/2024 – Cummins was informed of fuel leaks on the subject hoses during vehicle production by an OEM (Nova Bus). 3/27/2024 – 4/9/2024 – Cummins requested the failed parts from the OEM for failure analysis. Cummins initiated and completed an investigation into the cause of the leaks. A preliminary fault tree analysis identified insufficient crimping of the hose fitting as the most likely cause of leaks. 4/10/2024 – 4/29/2024 – Cummins continued to investigate the issue and determined that the cause of the fuel leaks was insufficient crimping of the connector.
4/29/24 – 5/1/24 – Cummins conducted a product safety investigation. A warranty search identified 15 warranty claims with failure dates between 6/9/2023 and 4/17/2024 for fuel leaks involving engines equipped with these options. Cummins conducted a Product Safety Hazard Analysis to evaluate the potential safety risk on fielded units. 05/7/2024 -5/14/2024 – Cummins escalated the issue through its Product Safety Defect Determination Process. 5/14/2024 – Based upon the results of the investigation, the Cummins Product Safety Defect Board decided to The information contained in this report was submitted pursuant to 49 CFR §573 Part 573 Safety Recall Report 24E-038 Page 3 conduct a safety campaign to address this condition. To date, there have been no reports of fires, accidents or injuries related to this issue. Description of Remedy :
Description of Remedy Program : The remedy is to replace the two subject fuel hoses with hoses having
improved connector crimps. Cummins requests that it be exempt from providing notification of a reimbursement plan. Any pre-notification product failure would have been corrected under the manufacturer’s limited warranty. Accordingly, no person would be eligible for reimbursement pursuant to 573.13. How Remedy Component Differs from Recalled Component : Identify How/When Recall Condition was Corrected in Production : The remedy component has an improved crimp and different date codes. Remedy hoses will have a date code of 230310 (YYMMDD format) and later.
The condition was corrected in production on 4/1/23 with the introduction of an improved hose design with an increased crimp on the connector joint. Recall Schedule :
Description of Recall Schedule : Cummins expects to notify the affected OEMs by 5/24/2024. Pending
consultation and agreement with the affected OEMs, Cummins will conduct the recall, including sending owner notifications. The timing of owner notification will be determined in consultation with the OEMs.
Cummins expects to release a safety campaign by July 11, 2024. In any event, Cummins expects to notify owners no later than 7/21/2024, pending availability of owner addresses from the OEMs.
Planned Dealer Notification Date : JUL 11, 2024 – JUL 11, 2024
Planned Owner Notification Date : JUL 21, 2024 – JUL 21, 2024 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: The information contained in this report was submitted pursuant to 49 CFR §573 Part 573 Safety Recall Report 24E-038
Page 4
The information contained in this report was submitted pursuant to 49 CFR §573
Name : Daimler Truck North America Address : 4747 North Channel Ave, Portland, OR 97217 Country : US
Company Phone : 5035744439 Name : Gillig Corporation Address : 451 Discovery Drive
Livermore, CA 94551 Country : US
Company Phone : 5102643833 Name : New Flyer Industries Canada ULC Address : 711 Kernaghan Ave., Winnipeg, 00 MB R2C3T4 Country : CA
Company Phone : 2042282942 Name : SHYFT GROUP Address : 41280 Bridge Street St. Novi, MI 48375 Country : US
Company Phone : 2698326290 Name : NOVATransit Bus Address : 1000 boul. Industriel
St-Eustache (Qc) 00 J7R 5A5 Country : CA
Company Phone : 4383545580 Name : Temsa Address : Sarihamzali Mah. Turhan Cemal Beriker Bu 01110 Seyhan/ADANA 00 Country : TR
Company Phone : 5062401901
* NR – Not Reported

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