74B324 Tie Rod Clamp Failure – 2022 Pierce Saber, Enforcer, & Arrow XT Fire Trucks

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OMB Control No.: 2127-0004 Part 573 Safety Recall Report 22V-892 The information contained in this report was submitted pursuant to 49 CFR §573 Manufacturer Name : Pierce Manufacturing Submission Date : DEC 05, 2022 NHTSA Recall No. : 22V-892 Manufacturer Recall No. : 74B324 Manufacturer Information : Manufacturer Name : Pierce Manufacturing Address : 2600 American Drive P.O. BOX 2017 Appleton WI 54912-2017 Company phone : 920-832-3000 Population : Number of potentially involved : 17 Estimated percentage with defect : 100 % Vehicle Information : Vehicle 1 : 2022-2022 Pierce Saber, Enforcer, Arrow XT Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : ALL Power Train : DIESEL Descriptive Information : This recall involves axles produced by Meritor using suspect tie rod clamps supplied to Meritor between December 16, 2021 and May 16, 2022. Production Dates : AUG 15, 2022 – AUG 24, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Description of Defect : Description of the Defect : Based upon information provided to Pierce by Meritor, due to a heat treat issue Meritor determined that a population of tie rod clamps used in the manufacture of a subject axle population may be susceptible to cracking. Over time, a crack may lead to a complete fracture of the clamp, thereby reducing clamp load to the tie rod end. If both clamps on the tie rod were to fail, the cross tube could start to unscrew, vehicle alignment issues would evolve, and there is a potential for the tie rod end to separate from the cross tube. Separation is more likely to occur when tie rod loads are highest, which is at slow vehicle speeds over rough terrain or turning maneuvers. FMVSS 1 : NR FMVSS 2 : NR Description of the Safety Risk : Based upon information provided to Pierce by Meritor, separation of the tie rod end from the cross tube could result in partial loss of vehicle steering capability, increasing the risk of a crash. Description of the Cause : Based upon information provided to Pierce by Meritor, excessive carbon was used in the manufacture process caused by a damaged control board on one of four furnaces at Meritor’s supplier. Part 573 Safety Recall Report 22V-892 Page 2 The information contained in this report was submitted pursuant to 49 CFR §573 Identification of Any Warning that can Occur : Based upon information supplied to Pierce by Meritor, the initial effect would be a vehicle out of alignment. If both clamps on the tie rod cracked, the tube could rotate and result in a partial loss of steering capability. Involved Components : Component Name 1 : Tie Rod Assembly Component Description : NR Component Part Number : B1-3102N4850 Component Name 2 : Tie Rod Assembly Component Description : NR Component Part Number : B1-3102R4854 Component Name 3 : Tie Rod Assembly Component Description : NR Component Part Number : A1-3102S4855 Supplier Identification : Component Manufacturer Name : Meritor Address : 2135 West Maple Road Troy Michigan 48084 Country : United States Chronology : 11/22/2022 – NHTSA notifies Pierce of recall 22E-075 filed by Meritor on September 30, 2022. 11/30/2022 – Based on the information provided by NHTSA, Pierce decides to conduct a recall of vehicles impacted by the issue described in Meritor’s equipment recall. Part 573 Safety Recall Report 22V-892 Page 3 The information contained in this report was submitted pursuant to 49 CFR §573 12/2/2022 – Pierce in turn files a defect report with NHTSA. Pierce is not aware of any accidents or injuries related to this condition. Description of Remedy : Description of Remedy Program : Meritor will work with affected vehicle manufacturers to replace suspect tie rod clamps on the subject axles. How Remedy Component Differs from Recalled Component : According to information supplied to Pierce by Meritor, replacement tie rod clamps will meet Meritor’s specifications for heat treatment. Identify How/When Recall Condition was Corrected in Production : Based upon information supplied to Pierce by Meritor, the sub-supplier to Meritor’s tier 1 supplier introduced metallurgical evaluation for excessive carburization for all heat treatment batches and an alarm was installed to alert operator if any deviating conditions occur. The correction was completed 5/11/2022. Recall Schedule : Description of Recall Schedule : Notifications to customers will be made via a customer letter. The 577 customer letter will be mailed pending NHTSA approval. Planned Dealer Notification Date : JAN 20, 2023 – JAN 20, 2023 Planned Owner Notification Date : JAN 20, 2023 – JAN 20, 2023 * NR – Not Reported

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OMB Control No.: 2127-0004 Part 573 Safety Recall Report 22V-892 The information contained in this report was submitted pursuant to 49 CFR §573 Manufacturer Name : Pierce Manufacturing Submission Date : DEC 02, 2022 NHTSA Recall No. : 22V-892 Manufacturer Recall No. : 74B324 Manufacturer Information : Manufacturer Name : Pierce Manufacturing Address : 2600 American Drive P.O. BOX 2017 Appleton WI 54912-2017 Company phone : 920-832-3000 Population : Number of potentially involved : 8 Estimated percentage with defect : 100 % Vehicle Information : Vehicle 1 : 2022-2022 Pierce Saber, Enforcer, Arrow XT Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : ALL Power Train : DIESEL Descriptive Information : This recall involves axles produced by Meritor using suspect tie rod clamps supplied to Meritor between December 16, 2021 and May 16, 2022. Production Dates : AUG 15, 2022 – AUG 24, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Description of Defect : Description of the Defect : Based upon information provided to Pierce by Meritor, due to a heat treat issue Meritor determined that a population of tie rod clamps used in the manufacture of a subject axle population may be susceptible to cracking. Over time, a crack may lead to a complete fracture of the clamp, thereby reducing clamp load to the tie rod end. If both clamps on the tie rod were to fail, the cross tube could start to unscrew, vehicle alignment issues would evolve, and there is a potential for the tie rod end to separate from the cross tube. Separation is more likely to occur when tie rod loads are highest, which is at slow vehicle speeds over rough terrain or turning maneuvers. FMVSS 1 : NR FMVSS 2 : NR Description of the Safety Risk : Based upon information provided to Pierce by Meritor, separation of the tie rod end from the cross tube could result in partial loss of vehicle steering capability, increasing the risk of a crash. Description of the Cause : Based upon information provided to Pierce by Meritor, excessive carbon was used in the manufacture process caused by a damaged control board on one of four furnaces at Meritor’s supplier. Part 573 Safety Recall Report 22V-892 Page 2 The information contained in this report was submitted pursuant to 49 CFR §573 Identification of Any Warning that can Occur : Based upon information supplied to Pierce by Meritor, the initial effect would be a vehicle out of alignment. If both clamps on the tie rod cracked, the tube could rotate and result in a partial loss of steering capability. Involved Components : Component Name 1 : Tie Rod Assembly Component Description : NR Component Part Number : B1-3102N4850 Component Name 2 : Tie Rod Assembly Component Description : NR Component Part Number : B1-3102R4854 Component Name 3 : Tie Rod Assembly Component Description : NR Component Part Number : A1-3102S4855 Supplier Identification : Component Manufacturer Name : Meritor Address : 2135 West Maple Road Troy Michigan 48084 Country : United States Chronology : 11/22/2022 – NHTSA notifies Pierce of recall 22E-075 filed by Meritor on September 30, 2022. 11/30/2022 – Based on the information provided by NHTSA, Pierce decides to conduct a recall of vehicles impacted by the issue described in Meritor’s equipment recall. Part 573 Safety Recall Report 22V-892 Page 3 The information contained in this report was submitted pursuant to 49 CFR §573 12/2/2022 – Pierce in turn files a defect report with NHTSA. Pierce is not aware of any accidents or injuries related to this condition. Description of Remedy : Description of Remedy Program : Meritor will work with affected vehicle manufacturers to replace suspect tie rod clamps on the subject axles. How Remedy Component Differs from Recalled Component : According to information supplied to Pierce by Meritor, replacement tie rod clamps will meet Meritor’s specifications for heat treatment. Identify How/When Recall Condition was Corrected in Production : Based upon information supplied to Pierce by Meritor, the sub-supplier to Meritor’s tier 1 supplier introduced metallurgical evaluation for excessive carburization for all heat treatment batches and an alarm was installed to alert operator if any deviating conditions occur. The correction was completed 5/11/2022. Recall Schedule : Description of Recall Schedule : Notifications to customers will be made via a customer letter. The 577 customer letter will be mailed pending NHTSA approval. Planned Dealer Notification Date : JAN 20, 2023 – JAN 20, 2023 Planned Owner Notification Date : JAN 20, 2023 – JAN 20, 2023 * NR – Not Reported

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Copyright Meritor, Inc., 2022 TP-2238 / Issued 08-22 Page 1 (16579) Printed in USA Field Service Procedure REPLACING TIE ROD END CLAMPS WITH KIT FRK-22-1002 SELECT NON-DRIVE STEER AXLES BUILT 12/16/2021 THROUGH 5/16/2022 TECHNICAL BULLETIN TP-2238 Hazard Alert Messages Read and observe all hazard alert messages in this publication. DANGER Indicates imminent danger. Failure to follow this instruction will result in death or serious injury. WARNING Indicates a possibly impending danger. Failure to follow this instruction can result in death or serious injury. CAUTION Indicates a hazardous situation or unsafe practice which, if not avoided, could result in injury or damage to components. How to Obtain Additional Maintenance, Service and Product Information Refer to Maintenance Manual 2, Front Non-Drive Steer Axles. To obtain this publication and other Meritor service publications, visit Literature on Demand at meritor.com. Additional information is also available at meritorbullpen. For additional assistance, contact the Meritor OnTrac™ Customer Service Center at 866-668-7221 (US and Canada) between 7:30 AM and 10:00 PM ET Monday through Friday, and between 9:00 AM and 6:00 PM ET on Saturday; 001-800-889-1834 (Mexico); or visit our website: www.meritor.com/warranty. Tie Rod End Clamp Replacement This technical bulletin provides procedures for replacing the tie rod end clamps on certain Meritor front non-drive steer axles. Owners will be notified by the manufacturer if their vehicle is eligible for this replacement program. Safety Precautions Before performing the procedures in this publication, read and understand the following safety precautions. DANGER Park the vehicle on a level surface. Block the wheels to prevent the vehicle from moving. Support the vehicle with safety stands. NEVER work under a vehicle supported only by jacks. Jacks can slip and fall over. Failure to use safety stands can result in death or serious personal injury and damage to components. WARNING To prevent eye injury, always wear eye protection when performing vehicle maintenance or service. Kit Required Kit FRK-22-1002 includes the following parts: • Two clamps • Two clamp bolts with nuts • Two tie rod end cotter pins Printed in USA Meritor Heavy Vehicle Systems, LLC 2135 West Maple Road Troy, MI 48084 USA 866-OnTrac1 (668-7221) meritor.com TP-2238 Issued 08-22 (16579) Copyright 2022 Meritor Inc. All Rights Reserved Information contained in this publication was in effect at the time the publication was approved for printing and is subject to change without notice or liability. Meritor Heavy Vehicle Systems, LLC, reserves the right to revise the information presented or to discontinue the production of parts described at any time. Tie Rod End Removal and Installation For complete tie rod service information, refer to Maintenance Manual 2, Front Non-Drive Steer Axles. 1. Wear safe eye protection. Park the vehicle on a level surface. Block the wheels to prevent the vehicle from moving. 2. Use a jack to raise the front of the vehicle so the wheels are off the ground. Support the vehicle with safety stands. WARNING Support the tie rod assembly during maintenance and service to prevent serious personal injury and damage to components. 3. Use a paint pen to mark the position of both tie rod ends as shown. Be sure to mark it well so the tie rod end can be screwed back into the exact same position on the threads. Also count the amount of visible threads to confirm proper depth upon re-installation. Figure 1. CROSS TUBE 1000027c TIE ROD END TUBE MARKS SLOT BOTTOM VIEW Figure 1 NOTE: Perform the clamp retrofit procedure one side at a time. 4. Remove the cotter pin and nut that fastens the tie rod end to the tie rod arm. Figure 2. 4005184c TIE ROD ARM TIE ROD CROSS TUBE END NUT COTTER PIN Figure 2 WARNING Use a brass or synthetic mallet for assembly and disassembly procedures. NEVER hit steel parts with a steel hammer. Pieces of a part can break off. Serious personal injury and damage to components can result. CAUTION Do not heat the tie rod arm to remove the cross tube assembly. Heating the tie rod arm may soften parts. Damage to components will result. 5. Disconnect the cross tube assembly from the tie rod arm. If available, use a tie rod end puller to separate the tie rod end from the tie rod arm. Figure 2. If necessary, use a leather or plastic mallet to tap on the end of the tie rod arm. 6. Remove the tie rod end clamp bolt. 7. Remove the tie rod end out of the cross tube. Rotate counterclockwise to remove passenger side tie rod end; rotate clockwise to remove driver side tie rod end. 8. Remove the old tie rod end clamp and discard. 9. Slide the new tie rod end clamp into position. Loosely install the nuts and the bolts into the clamps. 10. Thread the tie rod end back into the same position utilizing the paint pen marking. Exposed threads should match the value noted in Step 3. 11. Be sure that the clamp tab is firmly seated against the end of the cross tube. Align the clamp opening with the cross tube slot as shown in Figure 1. Tighten the clamp bolt nut to 150-175 lb-ft (203-237 Nm). 12. Re-install the tie rod into the tie rod arm. Thread the old nut on and tighten to 160-320 lb-ft (216-434 Nm). 13. Install a new cotter pin. If necessary, tighten the nut until the holes are aligned. Do not loosen the nut to install the cotter pin. 14. Repeat for the opposite tie rod end. 15. Use touch-up spray paint to match the original color. 16. Return the vehicle to service.

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Oshkosh Corporation Classification – Restricted January 2023 IMPORTANT SAFETY RECALL NHTSA Recall #22V-892 Pierce Recall #74B324 Dear Pierce Vehicle Owner: Ref: Pierce Job# << Product Number>> VIN: <> This notice is sent to you in accordance with the requirements of the National Traffic and Motor Vehicle Safety Act. Pierce has determined that a defect which relates to motor vehicle safety exists in certain Saber, Enforcer, and Arrow XT trucks manufactured between August 15, 2022 and August 24, 2022. A population of tie rod clamps used in the manufacture of a third party supplied steering axle may be susceptible to cracking. Over time, a crack may lead to a complete fracture of the clamp, thereby reducing clamp load to the tie rod end. If both clamps on the tie rod were to fail, the cross tube could start to unscrew, vehicle alignment issues would evolve, and there is a potential for the tie rod end to separate from the cross tube. Separation is more likely to occur when tie rod loads are highest, which is at slow vehicle speeds over rough terrain or turning maneuvers. If separation of the tie rod end from the cross tube occurs, this could result in partial loss of vehicle steering and potentially increase the risk of a vehicular crash. Why is a recall being conducted? • A population of tie rod clamps used in the manufacture of a third party supplied steering axle may be susceptible to cracking. Should the crack lead to a failure of the clamp, clamp load is reduced, and it is possible that the tie rod end could separate from the cross tube. If this separation occurs, it may result in a partial loss of steering and potentially increase the risk of a vehicular crash. ! IM P O R T A N T ! ➢ Your Pierce Vehicle is being recalled. ➢ You should contact your Pierce dealership service representative to schedule an appointment for the remedy. ➢ This service will be performed for you at no charge. Oshkosh Corporation Classification – Restricted What are we doing about the problem? • Pierce will replace the affected tie rod clamps at a Pierce authorized repair facility or in the field by a Pierce authorized representative. • The repair will be made at no cost to the customer. • This repair should take no longer than three hours to complete. What should you do? • Customers can continue to keep their vehicles in-service until the repair is completed. • To coordinate your repair, contact your Pierce dealership service representative. • If you have any questions or require further assistance, contact Pierce at 1-888-Y-PIERCE (1-888-974-3723). What if you no longer own this vehicle? If you no longer own this vehicle, please contact Pierce at 1-888-Y-PIERCE (1-888-974-3723) to assist us in updating our records. Who should you contact if you have further questions or concerns? If you have further questions, please contact Pierce at 1-888-Y-PIERCE (1-888-974-3723) to allow us to assist you. If you have already paid to have your vehicle corrected for this condition, you may be eligible for reimbursement of the charges you paid for the repair. To learn more about what you need to do to obtain reimbursement, contact our service group at 1-888-Y-PIERCE (1-888-974-3723) and indicate you have a service and technical question. If your dealer fails or is unable to remedy this defect without charge and within a reasonable time, you may submit a written complaint to: The Administrator, National Highway Traffic Safety Administration 1200 New Jersey Avenue, SE., Washington, DC 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, PIERCE MANUFACTURING INC.

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Pierce Manufacturing 2600 American Drive, Appleton, WI 54912-2017 • (888) 974-3723 FAX (920) 832-3353 Oshkosh Corporation Classification – Restricted TO: Pierce Dealer Network FROM: Todd Miorin – Sr. Director – Product Safety & Reliability Kristina Spang – Vice President, Aftermarket DATE: January 2023 SUBJECT: Recall Notice: NHTSA 22V-892 / Pierce 74B324 VEHICLE SAFETY RECALL DEALER NOTIFICATION – IMPORTANT Pierce has determined that a defect which relates to motor vehicle safety exists in certain Saber, Enforcer, and Arrow XT trucks shipped between August 15, 2022 & August 24, 2022. A population of tie rod clamps used in the manufacture of a third party supplied steering axle may be susceptible to cracking. Over time, a crack may lead to a complete fracture of the clamp, thereby reducing clamp load to the tie rod end. If both clamps on the tie rod were to fail, the cross tube could start to unscrew, vehicle alignment issues would evolve, and there is a potential for the tie rod end to separate from the cross tube. Separation is more likely to occur when tie rod loads are highest, which is at slow vehicle speeds over rough terrain or turning maneuvers. If separation of the tie rod end from the cross tube occurs, this could result in partial loss of vehicle steering and potentially increase the risk of a vehicular crash. VEHICLES INVOLVED The vehicles involved are Saber, Enforcer, and Arrow XT trucks manufactured between August 15, 2022 & August 24, 2022. There is a total of 17 affected vehicles in the field. Involved vehicles have been identified by Pierce job numbers and are listed on Pierceparts.com. Owner name and address data will enable dealers to follow up with owners involved in this campaign after Pierce has issued the customer notifications. Pierce has identified these vehicles based on build orders. Customers can continue to keep their vehicles in service until the repair is completed. DEALER RESPONSIBILITY All repairs will be carried out by an authorized Pierce service representative. However, it is the Pierce dealer’s responsibility to support the customers on the defined list and to encourage the apparatus owner to schedule a service appointment to replace the tie rod clamps. Please make sure the customer is aware the remedy will be provided by Pierce without charge. It is a violation of Federal law for a dealer to deliver a new vehicle covered by this recall notice under a sale or lease until the defect has been remedied. Thank you for your support and understanding. If you have any questions, please feel free to contact myself at 920.502.3139, or Kristina Spang at 920.832.4484. Sincerely, Todd Miorin Director – Product Safety & Reliability

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