Fuel Tubes May Crack and Leak Fuel – 2020 Temsa TS45 Motorcoaches

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12/13/21, 3:06 PM New Vibration Isolators for High Pressure Injector Supply Lines https://quickserve.cummins.com/qs3/pubsys2/xml/en/tsb/2021/tsb210271.html 1/3 Technical Service Bulletin Technical Service Bulletin : TSB210271 Released Date : 09-Dec-2021 New Vibration Isolators for High Pressure Injector Supply Lines New Vibration Isolators for High Pressure Injector Supply Lines Warranty Statement Contents Product Affected X12 CM2350 X119B X12 CM2450 X137B Description of Change Vibration isolators have been added to the high pressure injector supply lines on the cylinder numbers 4, 5, and 6 only . The vibration isolators are supplied as part of a kit that also contains the high pressure injector supply line. Vibration isolators will be offered for sale individually, however, the high pressure injector supply lines will only be sold in the corresponding kit. Reason for Change The addition of vibration isolators will reduce the dynamic stress on the high pressure injector supply lines. Service Instructions If existing high pressure injector supply line is replaced, use the new kit containing the line and the vibration isolator. See corresponding Service Manual. Reference Procedure 006-051 in Section 6. New vibration isolator must be installed with a new high pressure injector supply line. If an existing vibration isolator has been lost or damaged, replace with a new vibration isolator. See corresponding Service Manual. Reference Procedure 006-051 in Section 6. The high pressure injector supply line and the vibration isolator are not assembled inside the kit. Verify the vibration isolators are installed. See corresponding Service Manual. Reference The information in this document has no effect on present warranty coverage or repair practices, nor does it authorize TRP or Campaign actions. 12/13/21, 3:06 PM New Vibration Isolators for High Pressure Injector Supply Lines https://quickserve.cummins.com/qs3/pubsys2/xml/en/tsb/2021/tsb210271.html 2/3 Procedure 006-051 in Section 6. Figure 1, Installed Vibration Isolators on the High Pressure Injector Supply Lines. Service Parts Availability Service parts are available. See Table 1 for part numbers. Table 1, Service Parts Part Description Part Number Replaced Part Number to Order High pressure Injector Supply Line 5536516 6303156 Isolator 4390620 4390620 Publications Affected Table 2, Publications Affected Manual Type Engine Bulletin Number Procedure Title Procedure Section 12/13/21, 3:06 PM New Vibration Isolators for High Pressure Injector Supply Lines https://quickserve.cummins.com/qs3/pubsys2/xml/en/tsb/2021/tsb210271.html 3/3 Table 2, Publications Affected Manual Type Engine Bulletin Number Procedure Title Procedure Section Service Manual X12 CM2350X119B 5467515 Injector Supply Lines(High Pressure) Refer toProcedure006-051 (/qs3/pubsys2/xml/en/procedures/517/5 17-006- 051.html) 6 Service Manual X12 CM2350X137B 5659705 Injector Supply Lines(High Pressure) Refer toProcedure006-051 (/qs3/pubsys2/xml/en/procedures/674/6 74-006- 051.html) 6 Document History Last Modified: 09-Dec-2021 Date Details 2021-12-9 Module Created

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OMB Control No.: 2127-0004 Part 573 Safety Recall Report 22V-106 The information contained in this report was submitted pursuant to 49 CFR §573 Manufacturer Name : Temsa Submission Date : FEB 24, 2022 NHTSA Recall No. : 22V-106 Manufacturer Recall No. : NR Manufacturer Information : Manufacturer Name : Temsa Address : Temsa North America 404 Zell Drive Orlando FL 32824 Company phone : 8336283672 Population : Number of potentially involved : 4 Estimated percentage with defect : 100 % Vehicle Information : Vehicle 1 : 2020-2020 TEMSA TS45 Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : OTHER Power Train : DIESEL Descriptive Information : The recall population is based on engine serial numbers provided by Cummins Inc. regarding Equipment Recall 21E-099, which were installed on TEMSA vehicles according to the production records. Production Dates : NOV 01, 2019 – NOV 29, 2019 VIN Range 1 : Begin : NLTEJXM92L1000307 End : NLTEJXM92L1000310 Not sequential Description of Defect : Description of the Defect : Cummins informed Temsa that 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 as described in Cummins Equipment Recall 21E-099. 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 : According to the Equipment Recall 21E-099, 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-106 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 Mailcode 41303 COLUMBUS Indiana 47202-3005 Country : United States Chronology : On December, 2021 Cummins informed TEMSA about the serial numbers of recalled Cummins products. Temsa provided the related information of affected vehicles to Cummins. TEMSA made a decision to conduct a voluntary safety recall. To date, no accidents, no injuries, no fatalities have been reported Part 573 Safety Recall Report 22V-106 Page 3 The information contained in this report was submitted pursuant to 49 CFR §573 Description of Remedy : Description of Remedy Program : Cummins will notify the owners. Cummins states “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 : Cummins states that 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 : Cummins states that 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 states that 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-106 The information contained in this report was submitted pursuant to 49 CFR §573 Manufacturer Name : Temsa Submission Date : APR 20, 2022 NHTSA Recall No. : 22V-106 Manufacturer Recall No. : NR Manufacturer Information : Manufacturer Name : Temsa Address : Temsa North America 404 Zell Drive Orlando FL 32824 Company phone : 8336283672 Population : Number of potentially involved : 7 Estimated percentage with defect : 100 % Vehicle Information : Vehicle 1 : 2019-2021 TEMSA TS45 Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : OTHER Power Train : DIESEL Descriptive Information : The recall population is based on engine serial numbers provided by Cummins Inc. regarding Equipment Recall 21E-099, which were installed on TEMSA vehicles according to the production records. Production Dates : DEC 01, 2018 – MAR 31, 2021 VIN Range 1 : Begin : NLTEJXM96K1000292 End : NLTEJXA94M1000329 Not sequential Description of Defect : Description of the Defect : Cummins informed Temsa that 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 as described in Cummins Equipment Recall 21E-099. 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 : According to the Equipment Recall 21E-099, 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-106 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 Mailcode 41303 COLUMBUS Indiana 47202-3005 Country : United States Chronology : On December, 2021 Cummins informed TEMSA about the serial numbers of recalled Cummins products. Temsa provided the related information of affected vehicles to Cummins. TEMSA made a decision to conduct a voluntary safety recall. To date, no accidents, no injuries, no fatalities have been reported Part 573 Safety Recall Report 22V-106 Page 3 The information contained in this report was submitted pursuant to 49 CFR §573 Description of Remedy : Description of Remedy Program : Cummins will notify the owners. Cummins states “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 : Cummins states that 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 : Cummins states that 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 notified 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. Cummins expects to mail interim owner notifications, subject to receipt of owner addresses from OEMs that elect to have Cummins handle notification, by January 28, 2022. Cummins expects to release the Safety Campaign with the remedy on or about February 18, 2022 and to send final owner notifications, subject to receipt of owner addresses from these OEMs, on or about March 11, 2022. Planned Dealer Notification Date : FEB 24, 2022 – FEB 24, 2022 Planned Owner Notification Date : FEB 24, 2022 – NR * NR – Not Reported

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