Fuel Tubes May Crack and Leak Fuel – 2019 AEBI MB3

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OMB Control No.: 2127-0004 Part 573 Safety Recall Report 22V-120 The information contained in this report was submitted pursuant to 49 CFR §573 Manufacturer Name : AEBI-Schmidt Submission Date : MAR 04, 2022 NHTSA Recall No. : 22V-120 Manufacturer Recall No. : NR Manufacturer Information : Manufacturer Name : AEBI-Schmidt Address : 201 MB Lane Chilton WI 53014 Company phone : 920 898 1035 Population : Number of potentially involved : 1 Estimated percentage with defect : 100 % Vehicle Information : Vehicle 1 : 2019-2019 AEBI – Schmidt MB3 Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : UNKNOWN Power Train : DIESEL Descriptive Information : Vehicles equipped with Cummins X12 Part number D0S005BX03 Diesel engine. These engines are equipped with High Pressure Common Rail fuel systems and sold for installation in mixer, truck, coach, emergency vehicle, refuse truck, recreational vehicle and crane applications. The recall consists of the entire population of engines equipped with a certain Injector Fuel Supply Tube (fuel tube) prior to the implementation of corrective action. Production Dates : APR 26, 2016 – OCT 11, 2021 VIN Range 1 : Begin : 1M9BBBAP1KC967385 End : 1M9BBBAP1KC967385 Not sequential Description of Defect : Description of the Defect : The fuel tubes between the fuel rail and the injector for cylinders 4, 5 and 6 may be susceptible to cracking, resulting in a high pressure fuel leak. FMVSS 1 : NR FMVSS 2 : NR Description of the Safety Risk : A high pressure fuel leak in the presence of an ignition source may increase the risk of a fire. Description of the Cause : The subject fuel tubes (for cylinders 4, 5 and 6) are susceptible to cracking due to metal fatigue failure resulting from a combination of vibration strain, assembly strain and material strength. Identification of Any Warning that can Occur : Fuel leaks may be detected during maintenance. An operator may smell fuel or observe a mist due to the fuel leak Part 573 Safety Recall Report 22V-120 Page 2 The information contained in this report was submitted pursuant to 49 CFR §573 Involved Components : Component Name 1 : Injector Fuel Supply Tube Component Description : Fuel tube between fuel rail and fuel injector Component Part Number : 5536516 Component Name 2 : Injector Fuel Supply Tube Component Description : Fuel tube between fuel rail and fuel injector Component Part Number : 5486389 Component Name 3 : Injector Fuel Supply Tube Component Description : Fuel tube between fuel rail and fuel injector Component Part Number : 3695190 Supplier Identification : Component Manufacturer Name : Cummins, Inc. Address : Box 3005 Mail Code 41303 Columbus Indiana 47202-3005 Country : United States Chronology : December 13, 2021 – Letter from Cummins concerning recall 21E-099 – Request for Owner Addresses and Vehicle Recall Numbers December 13, 2021 – Reply to Cummins for qty 1, On-Highway machine with requested details. February 14, 2022 – Information request from US DOT regarding recall 21E-099 Part 573 Safety Recall Report 22V-120 Page 3 The information contained in this report was submitted pursuant to 49 CFR §573 Description of Remedy : Description of Remedy Program : The subject fuel tubes for cylinders 4, 5 and 6 (the rear half of the engine) will be replaced with new fuel tubes (having the same part number as the recalled components) and vibration isolators will be added to the fuel tubes. A recall-specific reimbursement plan will be provided on the Recall Portal for those units not covered by the manufacturer’s limited warranty. How Remedy Component Differs from Recalled Component : The replacement fuel tubes will also have vibration isolators. The fuel tube and vibration isolator combination will have a new part number. Identify How/When Recall Condition was Corrected in Production : The injector alignment to the cylinder head was improved by implementing an improved alignment fixture during engine assembly and vibration isolators were added to the fuel tubes during engine assembly on November 2, 2021. Recall Schedule : Description of Recall Schedule : NR Planned Dealer Notification Date : NR – NR Planned Owner Notification Date : NR – NR * NR – Not Reported

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OMB Control No.: 2127-0004 Part 573 Safety Recall Report 22V-120 The information contained in this report was submitted pursuant to 49 CFR §573 Manufacturer Name : AEBI-Schmidt Submission Date : MAR 02, 2022 NHTSA Recall No. : 22V-120 Manufacturer Recall No. : NR Manufacturer Information : Manufacturer Name : AEBI-Schmidt Address : 201 MB Lane Chilton WI 53014 Company phone : 920 898 1035 Population : Number of potentially involved : NR Estimated percentage with defect : NR Vehicle Information : Vehicle 1 : 2019-2019 AEBI – Schmidt MB3 Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : UNKNOWN Power Train : DIESEL Descriptive Information : Vehicles equipped with Cummins X12 Part number D0S005BX03 Diesel engine. These engines are equipped with High Pressure Common Rail fuel systems and sold for installation in mixer, truck, coach, emergency vehicle, refuse truck, recreational vehicle and crane applications. The recall consists of the entire population of engines equipped with a certain Injector Fuel Supply Tube (fuel tube) prior to the implementation of corrective action. Production Dates : APR 26, 2016 – OCT 11, 2021 VIN Range 1 : Begin : 1M9BBBAP1KC967385 End : 1M9BBBAP1KC967385 Not sequential Description of Defect : Description of the Defect : The fuel tubes between the fuel rail and the injector for cylinders 4, 5 and 6 may be susceptible to cracking, resulting in a high pressure fuel leak. FMVSS 1 : NR FMVSS 2 : NR Description of the Safety Risk : A high pressure fuel leak in the presence of an ignition source may increase the risk of a fire. Description of the Cause : The subject fuel tubes (for cylinders 4, 5 and 6) are susceptible to cracking due to metal fatigue failure resulting from a combination of vibration strain, assembly strain and material strength. Identification of Any Warning that can Occur : Fuel leaks may be detected during maintenance. An operator may smell fuel or observe a mist due to the fuel leak Part 573 Safety Recall Report 22V-120 Page 2 The information contained in this report was submitted pursuant to 49 CFR §573 Involved Components : Component Name 1 : Injector Fuel Supply Tube Component Description : Fuel tube between fuel rail and fuel injector Component Part Number : 5536516 Component Name 2 : Injector Fuel Supply Tube Component Description : Fuel tube between fuel rail and fuel injector Component Part Number : 5486389 Component Name 3 : Injector Fuel Supply Tube Component Description : Fuel tube between fuel rail and fuel injector Component Part Number : 3695190 Supplier Identification : Component Manufacturer Name : Cummins, Inc. Address : Box 3005 Mail Code 41303 Columbus Indiana 47202-3005 Country : United States Chronology : 19Apr2021 – Cummins received a Technical Service Request for a leaking fuel tube on an X12 engine. 19Apr-23Jul2021 – Cummins received additional reports of leaking fuel tubes on X12 engines and escalated the issue for further investigation. 23Jul2021 – Cummins initiated a Product Problem Solving (PPS) project to investigate the cause of the fuel tube leaks. Aug-Oct2021 – Cummins continued to investigate this issue, including obtaining and analyzing parts from the field, conducting testing to understand the cause of the failures and evaluating potential corrective action. As part of the investigation, Cummins identified 29 warranty claims for fuel tube fuel leaks (not all of which had cracked tubes) with a date range of March 6, 2020 through September 22, 2021 (as of September 22, 2021). 19Oct2021 – Cummins investigated a September 2021 fire on a vehicle equipped with an X12 engine. 25Oct2021 – Cummins identified a leak of the #5 cylinder fuel tube as the cause of the fire. 28Oct2023 – Cummins completed a Product Safety Hazard Analysis. Part 573 Safety Recall Report 22V-120 Page 3 The information contained in this report was submitted pursuant to 49 CFR §573 1Nov-23Nov2021 – Cummins escalated the issue through its Product Safety Defect Board process. 23Nov2023 – Based upon the results of the investigation, the Cummins Product Safety Defect Board decided to conduct a safety campaign to address this condition. To date, there have been no reports of injuries due to this condition. Description of Remedy : Description of Remedy Program : The subject fuel tubes for cylinders 4, 5 and 6 (the rear half of the engine) will be replaced with new fuel tubes (having the same part number as the recalled components) and vibration isolators will be added to the fuel tubes. A recall-specific reimbursement plan will be provided on the Recall Portal for those units not covered by the manufacturer’s limited warranty. How Remedy Component Differs from Recalled Component : The replacement fuel tubes will also have vibration isolators. The fuel tube and vibration isolator combination will have a new part number. Identify How/When Recall Condition was Corrected in Production : The injector alignment to the cylinder head was improved by implementing an improved alignment fixture during engine assembly and vibration isolators were added to the fuel tubes during engine assembly on November 2, 2021. Recall Schedule : Description of Recall Schedule : Cummins expects to notify affected OEMs no later than December 10, 2021. Cummins will conduct the recall and notify owners. The timing of owner notification will be determined in consultation with the affected OEMs and subject to availability of addresses from the affected OEMs. The recall schedule is being developed. Planned Dealer Notification Date : NR – NR Planned Owner Notification Date : NR – NR * NR – Not Reported

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OMB Control No.: 2127-0004 Part 573 Safety Recall Report 22V-120 The information contained in this report was submitted pursuant to 49 CFR §573 Manufacturer Name : AEBI-Schmidt Submission Date : DEC 12, 2022 NHTSA Recall No. : 22V-120 Manufacturer Recall No. : NR Manufacturer Information : Manufacturer Name : AEBI-Schmidt Address : 201 MB Lane Chilton WI 53014 Company phone : 920 898 1035 Population : Number of potentially involved : 1 Estimated percentage with defect : 100 % Vehicle Information : Vehicle 1 : 2019-2019 AEBI – Schmidt MB3 Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : UNKNOWN Power Train : DIESEL Descriptive Information : Vehicles equipped with Cummins X12 Part number D0S005BX03 Diesel engine. These engines are equipped with High Pressure Common Rail fuel systems and sold for installation in mixer, truck, coach, emergency vehicle, refuse truck, recreational vehicle and crane applications. The recall consists of the entire population of engines equipped with a certain Injector Fuel Supply Tube (fuel tube) prior to the implementation of corrective action. Production Dates : APR 26, 2016 – OCT 11, 2021 VIN Range 1 : Begin : 1M9BBBAP1KC967385 End : 1M9BBBAP1KC967385 Not sequential Description of Defect : Description of the Defect : The fuel tubes between the fuel rail and the injector for cylinders 4, 5 and 6 may be susceptible to cracking, resulting in a high pressure fuel leak. FMVSS 1 : NR FMVSS 2 : NR Description of the Safety Risk : A high pressure fuel leak in the presence of an ignition source may increase the risk of a fire. Description of the Cause : The subject fuel tubes (for cylinders 4, 5 and 6) are susceptible to cracking due to metal fatigue failure resulting from a combination of vibration strain, assembly strain and material strength. Identification of Any Warning that can Occur : Fuel leaks may be detected during maintenance. An operator may smell fuel or observe a mist due to the fuel leak Part 573 Safety Recall Report 22V-120 Page 2 The information contained in this report was submitted pursuant to 49 CFR §573 Involved Components : Component Name 1 : Injector Fuel Supply Tube Component Description : Fuel tube between fuel rail and fuel injector Component Part Number : 5536516 Component Name 2 : Injector Fuel Supply Tube Component Description : Fuel tube between fuel rail and fuel injector Component Part Number : 5486389 Component Name 3 : Injector Fuel Supply Tube Component Description : Fuel tube between fuel rail and fuel injector Component Part Number : 3695190 Supplier Identification : Component Manufacturer Name : Cummins, Inc. Address : Box 3005 Mail Code 41303 Columbus Indiana 47202-3005 Country : United States Chronology : December 13, 2021 – Letter from Cummins concerning recall 21E-099 – Request for Owner Addresses and Vehicle Recall Numbers December 13, 2021 – Reply to Cummins for qty 1, On-Highway machine with requested details. February 14, 2022 – Information request from US DOT regarding recall 21E-099 Part 573 Safety Recall Report 22V-120 Page 3 The information contained in this report was submitted pursuant to 49 CFR §573 Description of Remedy : Description of Remedy Program : The subject fuel tubes for cylinders 4, 5 and 6 (the rear half of the engine) will be replaced with new fuel tubes (having the same part number as the recalled components) and vibration isolators will be added to the fuel tubes. A recall-specific reimbursement plan will be provided on the Recall Portal for those units not covered by the manufacturer’s limited warranty. How Remedy Component Differs from Recalled Component : The replacement fuel tubes will also have vibration isolators. The fuel tube and vibration isolator combination will have a new part number. Identify How/When Recall Condition was Corrected in Production : The injector alignment to the cylinder head was improved by implementing an improved alignment fixture during engine assembly and vibration isolators were added to the fuel tubes during engine assembly on November 2, 2021. Recall Schedule : Description of Recall Schedule : NR Planned Dealer Notification Date : NR – NR Planned Owner Notification Date : NR – NR * NR – Not Reported

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OMB Control No.: 2127-0004 Part 573 Safety Recall Report 22V-120 The information contained in this report was submitted pursuant to 49 CFR §573 Manufacturer Name : AEBI-Schmidt Submission Date : MAR 04, 2022 NHTSA Recall No. : 22V-120 Manufacturer Recall No. : NR Manufacturer Information : Manufacturer Name : AEBI-Schmidt Address : 201 MB Lane Chilton WI 53014 Company phone : 920 898 1035 Population : Number of potentially involved : 1 Estimated percentage with defect : 100 % Vehicle Information : Vehicle 1 : 2019-2019 AEBI – Schmidt MB3 Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : UNKNOWN Power Train : DIESEL Descriptive Information : Vehicles equipped with Cummins X12 Part number D0S005BX03 Diesel engine. These engines are equipped with High Pressure Common Rail fuel systems and sold for installation in mixer, truck, coach, emergency vehicle, refuse truck, recreational vehicle and crane applications. The recall consists of the entire population of engines equipped with a certain Injector Fuel Supply Tube (fuel tube) prior to the implementation of corrective action. Production Dates : APR 26, 2016 – OCT 11, 2021 VIN Range 1 : Begin : 1M9BBBAP1KC967385 End : 1M9BBBAP1KC967385 Not sequential Description of Defect : Description of the Defect : The fuel tubes between the fuel rail and the injector for cylinders 4, 5 and 6 may be susceptible to cracking, resulting in a high pressure fuel leak. FMVSS 1 : NR FMVSS 2 : NR Description of the Safety Risk : A high pressure fuel leak in the presence of an ignition source may increase the risk of a fire. Description of the Cause : The subject fuel tubes (for cylinders 4, 5 and 6) are susceptible to cracking due to metal fatigue failure resulting from a combination of vibration strain, assembly strain and material strength. Identification of Any Warning that can Occur : Fuel leaks may be detected during maintenance. An operator may smell fuel or observe a mist due to the fuel leak Part 573 Safety Recall Report 22V-120 Page 2 The information contained in this report was submitted pursuant to 49 CFR §573 Involved Components : Component Name 1 : Injector Fuel Supply Tube Component Description : Fuel tube between fuel rail and fuel injector Component Part Number : 5536516 Component Name 2 : Injector Fuel Supply Tube Component Description : Fuel tube between fuel rail and fuel injector Component Part Number : 5486389 Component Name 3 : Injector Fuel Supply Tube Component Description : Fuel tube between fuel rail and fuel injector Component Part Number : 3695190 Supplier Identification : Component Manufacturer Name : Cummins, Inc. Address : Box 3005 Mail Code 41303 Columbus Indiana 47202-3005 Country : United States Chronology : December 13, 2021 – Letter from Cummins concerning recall 21E-099 – Request for Owner Addresses and Vehicle Recall Numbers December 13, 2021 – Reply to Cummins for qty 1, On-Highway machine with requested details. February 14, 2022 – Information request from US DOT regarding recall 21E-099 Part 573 Safety Recall Report 22V-120 Page 3 The information contained in this report was submitted pursuant to 49 CFR §573 Description of Remedy : Description of Remedy Program : The subject fuel tubes for cylinders 4, 5 and 6 (the rear half of the engine) will be replaced with new fuel tubes (having the same part number as the recalled components) and vibration isolators will be added to the fuel tubes. A recall-specific reimbursement plan will be provided on the Recall Portal for those units not covered by the manufacturer’s limited warranty. How Remedy Component Differs from Recalled Component : The replacement fuel tubes will also have vibration isolators. The fuel tube and vibration isolator combination will have a new part number. Identify How/When Recall Condition was Corrected in Production : The injector alignment to the cylinder head was improved by implementing an improved alignment fixture during engine assembly and vibration isolators were added to the fuel tubes during engine assembly on November 2, 2021. Recall Schedule : Description of Recall Schedule : NR Planned Dealer Notification Date : NR – NR Planned Owner Notification Date : NR – NR * NR – Not Reported

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