Rear Axle Drive Pinion May Fracture – 2022 KME Predator Panther & Severe Service Emergency Vehicles

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kmefire.com One Industrial Complex | Nesquehoning, PA 18240 T (800) 235-3928 | P (570) 669-9461 Member of the REV Group January 07, 2022 Name Address City, State Zip IMPORTANT SAFETY RECALL NOTICE: 21V905 IMPORTANT SAFETY RECALL This notice applies to your vehicle(s): Dear KME Vehicle Owner: This notice is sent to you in accordance with the requirements of the National Traffic and Motor Vehicle Safety Act. Why is a recall being conducted? KME decided that a defect which relates to motor vehicle safety exists in certain model year 2022 KME vehicles manufactured from June 2021 through October 2021. It has been reported that some Meritor drive pinion 180 series axles may be fractured in the pinion spline. If this defect exists, the fracturing of the pinion may hit the brake drop hose which may unintentionally apply the parking brake without detection or brake lights coming on, possibly resulting in a crash. The issue could occur without warning. This was caused by a variation in the pinion spline tooling geometry of the Meritor process. The affected item is the Meritor Series 180 Axle Pinion Shaft. What are we doing about the problem? A Meritor representative will contact you to schedule the axle pinion inspection and repair as needed. The inspection will need to be performed with a service technician and Meritor representative. The inspection will take approximately 1 hour. If it is determined that the pinion is fractured, Meritor will inform you and KME that the Differential Carrier Housing Assembly will need to be replaced. Meritor and KME will help locate an authorized service facility if you are unable to complete the replacement of the assembly once it is received. The repair will take approximately 5 hours to complete. There is no cost to the vehicle owner for the recall remedy. Meritor and/or KME will contact all owners of these units that are affected by this recall. They will be directed to the appropriate service provider for repair. KME and Meritor are providing, free of charge, the necessary components to rectify the issue and will pay labor costs for inspecting and replacing the included components that have not already been replaced during normal maintenance. What should you do? Meritor and/or KME will contact all owners of these units that are affected by this recall. Owners will be directed to the appropriate service provider for repair. If you need further assistance with this notification, please contact your KME Dealer or KME Customer Service at (570) 669-2815. INCLUDED WITH THIS LETTER IS AN OWNER RESPONSE CARD TO BE FILLED OUT AND RETURNED TO KME. Please have your Truck VIN or GSO available. After the repair has been completed, please fill in the appropriate information on the enclosed Owner Response Postcard, sign it, and return it to: Mail: KME, One Industrial Complex, Nesquehoning, PA 18240 E-mail: [email protected] Fax: (570) 669-5182 What if you no longer own this vehicle? If you are not the current owner of the vehicle, please indicate this on the Owner Response Postcard and return the card to us. Federal law requires any lessor who receives a notification of a safety related defect or noncompliance pertaining to any leased motor vehicle shall send the notice to the lessee within 10 days. If you are no longer the owner of this vehicle, please provide us with any contact information so we may contact the new owner. If you have already paid to have your vehicle repaired for this condition, you may be eligible for reimbursement of the charges you paid for the repair or replacement of components. To learn more about what you need to do to obtain reimbursement, contact our customer service department at (570) 669-5230. If after having attempted to take advantage of this recall you believe you have not been able to have your vehicle remedied without charge and within a reasonable amount of time, you may submit a complaint to the Administrator, National Highway Traffic Safety Administration, 1200 New Jersey Ave., S.E., Washington, D.C., 20590; or call the toll-free Vehicle Safety Hotline at 1- 888-327-4236 (TTY: 1-800-424-9153); or go to http://www.safercar.gov. We apologize for any inconvenience this safety recall may cause, but your safety is our first concern. Sincerely, KME, Inc. From: (Customer name) To: KME Fire Apparatus One Industrial Complex Nesquehoning, PA 18240 RE: NHSTA Recall No. 21V905 Date: KME GSO(s) or VIN(s) __________________________________________

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kmefire.com One Industrial Complex | Nesquehoning, PA 18240 T (800) 235-3928 | P (570) 669-9461 Member of the REV Group April 8, 2022 SAFETY RECALL NOTICE: 21V905 THIS IS AN IMPORTANT CHANGE TO THE NOTICE YOU MAY HAVE RECEIVED ON 01/06/2022 TO: Affected KME Dealers KME decided that a defect which relates to motor vehicle safety exists in certain model year 2021-2022 KME vehicles manufactured from November 2020 through January 2022. Note that Meritor expanded the recall population in February 2022 and again in April 2022. It has been reported that some Meritor drive pinion 180 series axles may be fractured in the pinion spline. If this defect exists, the fracturing of the pinion may hit the brake drop hose which may unintentionally apply the parking brake without detection or brake lights coming on, possibly resulting in a crash. The issue could occur without warning. This was caused by a variation in the pinion spline tooling geometry of the Meritor process. Owners will be directed to contact their local Dealer or repair facility for assistance with facilitating the repair. The repair facility will need to open a case with Meritor’s OnTrac Technical Call Center to verify the truck is affected by this campaign. If it is determined that the truck is affected, Meritor will inform the repair facility and Spartan that the Differential Carrier Assembly will need to be replaced and order parts for replacement. Once the repair facility receives the parts for the replacement Carrier, the repair facility can schedule the replacement with you. The repair will take approximately 5 hours to complete. There is no cost to the vehicle owner for the recall remedy. Meritor is providing, free of charge, the necessary components to rectify the issue and will pay labor costs for replacing the included components that have not already been replaced during normal maintenance. Please be reminded that it is a violation of Federal law for you deliver a new motor vehicle or any new or used item of motor vehicle equipment covered by this notification until this defect has been remedied. Substantial civil penalties apply to violations of this law. Your assistance with this recall is appreciated. Should you have any questions or concerns, please contact KME Customer Service at (570) 669-5230. Sincerely, KME, Inc.

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kmefire.com One Industrial Complex | Nesquehoning, PA 18240 T (800) 235-3928 | P (570) 669-9461 Member of the REV Group January 5, 2022 SAFETY RECALL NOTICE: 21V905 TO: Affected KME Dealers KME decided that a defect which relates to motor vehicle safety exists in certain model year 2022 KME vehicles manufactured from June 2021 through October 2021. It has been reported that some Meritor drive pinion 180 series axles may be fractured in the pinion spline. If this defect exists, the fracturing of the pinion may hit the brake drop hose which may unintentionally apply the parking brake without detection or brake lights coming on, possibly resulting in a crash. The issue could occur without warning. This was caused by a variation in the pinion spline tooling geometry of the Meritor process. A Meritor representative will contact owners to schedule the axle pinion inspection and repair as needed. The inspection will need to be performed with a service technician and Meritor representative. The inspection will take approximately 1 hour. If it is determined that the pinion is fractured, Meritor will inform the owner and KME that the Differential Carrier Housing Assembly will need to be replaced. Meritor and KME will help locate an authorized service facility if the owner is unable to complete the replacement of the assembly once it is received. The repair will take approximately 5 hours to complete. Please be reminded that it is a violation of Federal law for you deliver a new motor vehicle or any new or used item of motor vehicle equipment covered by this notification until this defect has been remedied. Substantial civil penalties apply to violations of this law. Your assistance with this recall is appreciated. Should you have any questions or concerns, please contact KME Customer Service at (570) 669-5230. Sincerely, KME, Inc.

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OMB Control No.: 2127-0004 Part 573 Safety Recall Report 21V-905 The information contained in this report was submitted pursuant to 49 CFR §573 Manufacturer Name : Kovatch Mobile Equipment Corp. Submission Date : APR 14, 2022 NHTSA Recall No. : 21V-905 Manufacturer Recall No. : NR Manufacturer Information : Manufacturer Name : Kovatch Mobile Equipment Corp. Address : One Industrial Complex Nesquehoning PA 18240 Company phone : 8002353926 Population : Number of potentially involved : 41 Estimated percentage with defect : 100 % Vehicle Information : Vehicle 1 : 2021-2022 KME Predator Panther Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : OTHER Power Train : DIESEL Descriptive Information : -Population determined using serial numbers provided by Meritor. -Products not included in the recall were not identified by Meritor as having the potential defect. -2021 KME Predator Panther: 6 -2022 KME Predator Panther: 12 Production Dates : NOV 06, 2020 – JAN 31, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 2 : 2022-2022 KME Predator Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : OTHER Power Train : DIESEL Descriptive Information : -Population determined using serial numbers provided by Meritor. -Products not included in the recall were not identified by Meritor as having the potential defect. -2021 KME Predatorr: 2 -2022 KME Predatorr: 3 Production Dates : DEC 13, 2020 – AUG 31, 2021 VIN Range 1 : Begin : NR End : NR Not sequential Part 573 Safety Recall Report 21V-905 Page 2 The information contained in this report was submitted pursuant to 49 CFR §573 Vehicle 3 : 2021-2022 KME Severe Service Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : OTHER Power Train : DIESEL Descriptive Information : -Population determined using serial numbers provided by Meritor. -Products not included in the recall were not identified by Meritor as having the potential defect. -2021 KME Severe Service: 6 -2022 KME Severe Service: 12 Production Dates : APR 16, 2021 – OCT 31, 2021 VIN Range 1 : Begin : NR End : NR Not sequential Description of Defect : Description of the Defect : Meritor drive pinion 180 series fractured in the spline. FMVSS 1 : NR FMVSS 2 : NR Description of the Safety Risk : If this condition exists, the fracture of the pinion may hit the brake drop hose which may unintentionally apply parking brake without detection or brake lights coming on, possibly resulting in a crash. Description of the Cause : There was a variation in the pinion spline tooling geometry of the Meritor process. Identification of Any Warning that can Occur : The issue could occur without warning. Involved Components : Component Name 1 : Rear Axle Carrier Component Description : Pinion Shaft Component Part Number : 180 Series Supplier Identification : Component Manufacturer Name : Meritor Address : 22021 Skyway Church RD Part 573 Safety Recall Report 21V-905 Page 3 The information contained in this report was submitted pursuant to 49 CFR §573 Maxton North Carolina 28364 Country : United States Chronology : June 2020 – Pinion crack found on campus in Charlotte during a different PSR. August – September 2020 – They completed tests to attempt to replicate and could not reproduce the fracture. Implemented 100% mag particle inspection on all 186R series. Meritor Product Engineering provided a high confidence level that this would be an infancy failure (during the carriers first high load event) due to the fracture signature. April 2021 – Claim created through standard warranty process for pinion crack. July 2021 – Pinion failure during delivery to the dealer from the plant. Facilitated warranty claim through Meritor, they provided new gear set. September 2021 – Houston reached out regarding a pinion crack failure while in service (24 hours in service and under 3,000 miles), was second truck of fleet with similar failure. Pinion broke off and damaged the spring brake air supply line. Metro and Houston insisted an inspection method to validate that the rest of the fleet do not have the same failures. This resulted in Meritor completing an on-site ultrasonic test for the rest of the fleet. Meritor provided corrective action and containment dates, as well as their assessment that this issue is low risk. October 2021 – Spartan risk assessment completed. October – November 2021 – Reviewed past precedence. Reached out to all REV Fire businesses to check for any Meritor pinion warranty issues. E-One had one failure in the field in October 2021 but a different axle series affected. Met with Meritor to review the cause again and the potential affected population. November 2021 – Escalated the issue to REV Group Management. February 14, 2022 – Meritor expanded the date range of affected population. February 21, 2022 – Meritor provided remainder of information for KME to determine additional population. April 4-7, 2022 – Meritor expanded the date range of affected population and provided remainder of information for KME to determine additional population. Description of Remedy : Description of Remedy Program : Meritor will work with the repair facility to replace the Differential Carrier Housing Assembly. The repair will take approximately 5 hours to complete. There is no cost to the vehicle owner for the recall remedy. Meritor is providing, free of charge, the necessary components to rectify the issue and will pay labor costs for replacing the included components that have not already been replaced during normal maintenance. How Remedy Component Differs from Recalled Component : N/A Identify How/When Recall Condition was Corrected in Production : Meritor has implemented containment in their production facility as of April 20, 2021 and corrective action of tooling implementation as of August 2021. Part 573 Safety Recall Report 21V-905 Page 4 The information contained in this report was submitted pursuant to 49 CFR §573 Recall Schedule : Description of Recall Schedule : Dealers will be notified: 12/20/2021-12/23/2021 Owners will be notified: 01/03/2022-01/07/2022 Schedule for additional population added 2/2022: Dealers will be notified: 04/04/2022-04/08/2022 Owners will be notified: 04/11/2022-04/15/2022 Planned Dealer Notification Date : APR 04, 2022 – APR 08, 2022 Planned Owner Notification Date : APR 11, 2022 – APR 15, 2022 * NR – Not Reported

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OMB Control No.: 2127-0004 Part 573 Safety Recall Report 21V-905 The information contained in this report was submitted pursuant to 49 CFR §573 Manufacturer Name : Kovatch Mobile Equipment Corp. Submission Date : FEB 23, 2022 NHTSA Recall No. : 21V-905 Manufacturer Recall No. : NR Manufacturer Information : Manufacturer Name : Kovatch Mobile Equipment Corp. Address : One Industrial Complex Nesquehoning PA 18240 Company phone : 8002353926 Population : Number of potentially involved : 26 Estimated percentage with defect : 100 % Vehicle Information : Vehicle 1 : 2022-2022 KME Predator Panther Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : OTHER Power Train : DIESEL Descriptive Information : -Population determined using serial numbers provided by Meritor. -Products not included in the recall were not identified by Meritor as having the potential defect. -2022 KME Predator Panther: 12 Production Dates : MAR 29, 2021 – JAN 31, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 2 : 2021-2022 KME Severe Service Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : OTHER Power Train : DIESEL Descriptive Information : -Population determined using serial numbers provided by Meritor. -Products not included in the recall were not identified by Meritor as having the potential defect. -2021 KME Severe Service: 1 -2022 KME Severe Service: 12 Production Dates : APR 16, 2021 – OCT 31, 2021 VIN Range 1 : Begin : NR End : NR Not sequential Part 573 Safety Recall Report 21V-905 Page 2 The information contained in this report was submitted pursuant to 49 CFR §573 Vehicle 3 : 2022-2022 KME Predator Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : OTHER Power Train : DIESEL Descriptive Information : -Population determined using serial numbers provided by Meritor. -Products not included in the recall were not identified by Meritor as having the potential defect. -2022 KME Predatorr: 1 Production Dates : AUG 31, 2021 – AUG 31, 2021 VIN Range 1 : Begin : NR End : NR Not sequential Description of Defect : Description of the Defect : Meritor drive pinion 180 series fractured in the spline. FMVSS 1 : NR FMVSS 2 : NR Description of the Safety Risk : If this condition exists, the fracture of the pinion may hit the brake drop hose which may unintentionally apply parking brake without detection or brake lights coming on, possibly resulting in a crash. Description of the Cause : There was a variation in the pinion spline tooling geometry of the Meritor process. Identification of Any Warning that can Occur : The issue could occur without warning. Involved Components : Component Name 1 : Rear Axle Carrier Component Description : Pinion Shaft Component Part Number : 180 Series Supplier Identification : Component Manufacturer Name : Meritor Address : 22021 Skyway Church RD Maxton North Carolina 28364 Part 573 Safety Recall Report 21V-905 Page 3 The information contained in this report was submitted pursuant to 49 CFR §573 Country : United States Chronology : June 2020 – Pinion crack found on campus in Charlotte during a different PSR. August – September 2020 – They completed tests to attempt to replicate and could not reproduce the fracture. Implemented 100% mag particle inspection on all 186R series. Meritor Product Engineering provided a high confidence level that this would be an infancy failure (during the carriers first high load event) due to the fracture signature. April 2021 – Claim created through standard warranty process for pinion crack. July 2021 – Pinion failure during delivery to the dealer from the plant. Facilitated warranty claim through Meritor, they provided new gear set. September 2021 – Houston reached out regarding a pinion crack failure while in service (24 hours in service and under 3,000 miles), was second truck of fleet with similar failure. Pinion broke off and damaged the spring brake air supply line. Metro and Houston insisted an inspection method to validate that the rest of the fleet do not have the same failures. This resulted in Meritor completing an on-site ultrasonic test for the rest of the fleet. Meritor provided corrective action and containment dates, as well as their assessment that this issue is low risk. October 2021 – Spartan risk assessment completed. October – November 2021 – Reviewed past precedence. Reached out to all REV Fire businesses to check for any Meritor pinion warranty issues. E-One had one failure in the field in October 2021 but a different axle series affected. Met with Meritor to review the cause again and the potential affected population. November 2021 – Escalated the issue to REV Group Management. February 14, 2022 – Meritor expanded the date range of affected population. February 21, 2022 – Meritor provided remainder of information for KME to determine additional population. Description of Remedy : Description of Remedy Program : Meritor will conduct an on-site ultrasonic test inspection for the affected population. This will be covered under normal warranty process. Defect units will be replaced at no cost by Meritor. How Remedy Component Differs from Recalled Component : N/A Identify How/When Recall Condition was Corrected in Production : Meritor has implemented containment in their production facility as of April 20, 2021 and corrective action of tooling implementation as of August 2021. Recall Schedule : Description of Recall Schedule : Dealers will be notified: 12/20/2021-12/23/2021 Owners will be notifed: 01/03/2022-01/07/2022 Planned Dealer Notification Date : DEC 20, 2021 – DEC 23, 2021 Part 573 Safety Recall Report 21V-905 Page 4 The information contained in this report was submitted pursuant to 49 CFR §573 Planned Owner Notification Date : JAN 03, 2022 – JAN 07, 2022 * NR – Not Reported

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OMB Control No.: 2127-0004 Part 573 Safety Recall Report 21V-905 The information contained in this report was submitted pursuant to 49 CFR §573 Manufacturer Name : Kovatch Mobile Equipment Corp. Submission Date : NOV 19, 2021 NHTSA Recall No. : 21V-905 Manufacturer Recall No. : NR Manufacturer Information : Manufacturer Name : Kovatch Mobile Equipment Corp. Address : One Industrial Complex Nesquehoning PA 18240 Company phone : 8002353926 Population : Number of potentially involved : 7 Estimated percentage with defect : 100 % Vehicle Information : Vehicle 1 : 2022-2022 KME Predator Panther Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : OTHER Power Train : DIESEL Descriptive Information : -Population determined using serial numbers provided by Meritor. -Products not included in the recall were not identified by Meritor as having the potential defect. -2022 KME Predator Panther: 4 Production Dates : JUN 15, 2021 – OCT 20, 2021 VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 2 : 2022-2022 KME Severe Service Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : OTHER Power Train : DIESEL Descriptive Information : -Population determined using serial numbers provided by Meritor. -Products not included in the recall were not identified by Meritor as having the potential defect. -2022 KME Severe Service: 3 Production Dates : JUL 31, 2021 – OCT 20, 2021 VIN Range 1 : Begin : NR End : NR Not sequential Description of Defect : Description of the Defect : Meritor drive pinion 180 series fractured in the spline. FMVSS 1 : NR FMVSS 2 : NR Part 573 Safety Recall Report 21V-905 Page 2 The information contained in this report was submitted pursuant to 49 CFR §573 Description of the Safety Risk : If this condition exists, the fracture of the pinion may hit the brake drop hose which may unintentionally apply parking brake without detection or brake lights coming on, possibly resulting in a crash. Description of the Cause : There was a variation in the pinion spline tooling geometry of the Meritor process. Identification of Any Warning that can Occur : The issue could occur without warning. Involved Components : Component Name 1 : Rear Axle Carrier Component Description : Pinion Shaft Component Part Number : 180 Series Supplier Identification : Component Manufacturer Name : Meritor Address : 22021 Skyway Church RD Maxton North Carolina 28364 Country : United States Chronology : June 2020 – Pinion crack found on campus in Charlotte during a different PSR. August – September 2020 – They completed tests to attempt to replicate and could not reproduce the fracture. Implemented 100% mag particle inspection on all 186R series. Meritor Product Engineering provided a high confidence level that this would be an infancy failure (during the carriers first high load event) due to the fracture signature. April 2021 – Claim created through standard warranty process for pinion crack. July 2021 – Pinion failure during delivery to the dealer from the plant. Facilitated warranty claim through Meritor, they provided new gear set. September 2021 – Houston reached out regarding a pinion crack failure while in service (24 hours in service and under 3,000 miles), was second truck of fleet with similar failure. Pinion broke off and damaged the spring brake air supply line. Metro and Houston insisted an inspection method to validate that the rest of the fleet do not have the same failures. This resulted in Meritor completing an on-site ultrasonic test for the rest of the fleet. Meritor provided corrective action and containment dates, as well as their assessment that this issue is low risk. Part 573 Safety Recall Report 21V-905 Page 3 The information contained in this report was submitted pursuant to 49 CFR §573 October 2021 – Spartan risk assessment completed. October – November 2021 – Reviewed past precedence. Reached out to all REV Fire businesses to check for any Meritor pinion warranty issues. E-One had one failure in the field in October 2021 but a different axle series affected. Met with Meritor to review the cause again and the potential affected population. November 2021 – Escalated the issue to REV Group Management. Description of Remedy : Description of Remedy Program : Meritor will conduct an on-site ultrasonic test inspection for the affected population. This will be covered under normal warranty process. Defect units will be replaced at no cost by Meritor. How Remedy Component Differs from Recalled Component : N/A Identify How/When Recall Condition was Corrected in Production : Meritor has implemented containment in their production facility as of April 20, 2021 and corrective action of tooling implementation as of August 2021. Recall Schedule : Description of Recall Schedule : Dealers will be notified: 12/20/2021-12/23/2021 Owners will be notifed: 01/03/2022-01/07/2022 Planned Dealer Notification Date : DEC 20, 2021 – DEC 23, 2021 Planned Owner Notification Date : JAN 03, 2022 – JAN 07, 2022 * NR – Not Reported

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OMB Control No.: 2127-0004 Part 573 Safety Recall Report 21V-905 The information contained in this report was submitted pursuant to 49 CFR §573 Manufacturer Name : Kovatch Mobile Equipment Corp. Submission Date : MAR 25, 2022 NHTSA Recall No. : 21V-905 Manufacturer Recall No. : NR Manufacturer Information : Manufacturer Name : Kovatch Mobile Equipment Corp. Address : One Industrial Complex Nesquehoning PA 18240 Company phone : 8002353926 Population : Number of potentially involved : 26 Estimated percentage with defect : 100 % Vehicle Information : Vehicle 1 : 2022-2022 KME Predator Panther Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : OTHER Power Train : DIESEL Descriptive Information : -Population determined using serial numbers provided by Meritor. -Products not included in the recall were not identified by Meritor as having the potential defect. -2022 KME Predator Panther: 12 Production Dates : MAR 29, 2021 – JAN 31, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 2 : 2021-2022 KME Severe Service Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : OTHER Power Train : DIESEL Descriptive Information : -Population determined using serial numbers provided by Meritor. -Products not included in the recall were not identified by Meritor as having the potential defect. -2021 KME Severe Service: 1 -2022 KME Severe Service: 12 Production Dates : APR 16, 2021 – OCT 31, 2021 VIN Range 1 : Begin : NR End : NR Not sequential Part 573 Safety Recall Report 21V-905 Page 2 The information contained in this report was submitted pursuant to 49 CFR §573 Vehicle 3 : 2022-2022 KME Predator Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : OTHER Power Train : DIESEL Descriptive Information : -Population determined using serial numbers provided by Meritor. -Products not included in the recall were not identified by Meritor as having the potential defect. -2022 KME Predatorr: 1 Production Dates : AUG 31, 2021 – AUG 31, 2021 VIN Range 1 : Begin : NR End : NR Not sequential Description of Defect : Description of the Defect : Meritor drive pinion 180 series fractured in the spline. FMVSS 1 : NR FMVSS 2 : NR Description of the Safety Risk : If this condition exists, the fracture of the pinion may hit the brake drop hose which may unintentionally apply parking brake without detection or brake lights coming on, possibly resulting in a crash. Description of the Cause : There was a variation in the pinion spline tooling geometry of the Meritor process. Identification of Any Warning that can Occur : The issue could occur without warning. Involved Components : Component Name 1 : Rear Axle Carrier Component Description : Pinion Shaft Component Part Number : 180 Series Supplier Identification : Component Manufacturer Name : Meritor Address : 22021 Skyway Church RD Maxton North Carolina 28364 Part 573 Safety Recall Report 21V-905 Page 3 The information contained in this report was submitted pursuant to 49 CFR §573 Country : United States Chronology : June 2020 – Pinion crack found on campus in Charlotte during a different PSR. August – September 2020 – They completed tests to attempt to replicate and could not reproduce the fracture. Implemented 100% mag particle inspection on all 186R series. Meritor Product Engineering provided a high confidence level that this would be an infancy failure (during the carriers first high load event) due to the fracture signature. April 2021 – Claim created through standard warranty process for pinion crack. July 2021 – Pinion failure during delivery to the dealer from the plant. Facilitated warranty claim through Meritor, they provided new gear set. September 2021 – Houston reached out regarding a pinion crack failure while in service (24 hours in service and under 3,000 miles), was second truck of fleet with similar failure. Pinion broke off and damaged the spring brake air supply line. Metro and Houston insisted an inspection method to validate that the rest of the fleet do not have the same failures. This resulted in Meritor completing an on-site ultrasonic test for the rest of the fleet. Meritor provided corrective action and containment dates, as well as their assessment that this issue is low risk. October 2021 – Spartan risk assessment completed. October – November 2021 – Reviewed past precedence. Reached out to all REV Fire businesses to check for any Meritor pinion warranty issues. E-One had one failure in the field in October 2021 but a different axle series affected. Met with Meritor to review the cause again and the potential affected population. November 2021 – Escalated the issue to REV Group Management. February 14, 2022 – Meritor expanded the date range of affected population. February 21, 2022 – Meritor provided remainder of information for KME to determine additional population. Description of Remedy : Description of Remedy Program : Meritor will work with the repair facility to replace the Differential Carrier Housing Assembly. The repair will take approximately 5 hours to complete. There is no cost to the vehicle owner for the recall remedy. Meritor is providing, free of charge, the necessary components to rectify the issue and will pay labor costs for replacing the included components that have not already been replaced during normal maintenance. How Remedy Component Differs from Recalled Component : N/A Identify How/When Recall Condition was Corrected in Production : Meritor has implemented containment in their production facility as of April 20, 2021 and corrective action of tooling implementation as of August 2021. Recall Schedule : Part 573 Safety Recall Report 21V-905 Page 4 The information contained in this report was submitted pursuant to 49 CFR §573 Description of Recall Schedule : Dealers will be notified: 12/20/2021-12/23/2021 Owners will be notified: 01/03/2022-01/07/2022 Schedule for additional population added 2/2022: Dealers will be notified: 04/04/2022-04/08/2022 Owners will be notified: 04/11/2022-04/15/2022 Planned Dealer Notification Date : APR 04, 2022 – APR 08, 2022 Planned Owner Notification Date : APR 11, 2022 – APR 15, 2022 * NR – Not Reported

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