Hopper Hydraulic Lift System Malfunction – 2021-2022 Schwarze A9SE Monsoon (Single Engine) Street Sweepers

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Department: ALL Doc. No.: WI-A9-001 Author: Zachery Mullally Area: ALL Revision #: Initial Release Approved (Eng): Section: ALL Revision Date: Draft Approved (Qty): Keith Borchers Reference Doc: Blank Page: 1 of 12 Approved (OPS): Blank Approved (PM): Quality Policy PPE Caution This document contains information proprietary to Schwarze Industries, Inc.. Any disclosure or use is expressly prohibited. It is not to be copied or reproduced in any form unless specifically permitted otherwise by the Company’s management. Documents that do not bear The Company’s official stamps are considered “Uncontrolled” Proprietary Notice Document Control Waiver Read the work order and this work instruction before beginning operation. If you have any questions, ask for direction from your Lead. Process: Dump Cylinder Valve Assembly Installation ME-PFC-003-F-001 Visual Work Instruction Template Rev 10 12/3/2018 WORK INSTRUCTION Schwarze industries and its employees are committed to continued process improvement by maintaining focus to achieve: Superior Quality and Reliability; Customer Satisfaction, Designing to our Customer’s needs; Competitive lead time and Comprehensive Training and Technical Support. Equipment / Materials Tools: 5/8″ Socket/Wrench, 1/2″ Socket/Wrench Illustration Instruction Details Source all parts and materials listed on the Work Order and Drawing 206D12 before the beginning this build. Department: ALL Doc. No.: WI-A9-001 Author: Zachery Mullally Area: ALL Revision #: Initial Release Approved (Eng): Section: ALL Revision Date: Draft Approved (Qty): Reference Doc: Blank Page: 2 of 12 Approved (Supv): Blank Approved (PM): Quality Policy PPE Caution Proprietary Notice Document Control Waiver This document contains information proprietary to Schwarze Industries, Inc.. Any disclosure or use is expressly prohibited. It is not to be copied or reproduced in any form unless specifically permitted otherwise by the Company’s management. Documents that do not bear The Company’s official stamps are considered “Uncontrolled” Process: Dump Cylinder Valve Assembly Installation WORK INSTRUCTION Schwarze industries and its employees are committed to continued process improvement by maintaining focus to achieve: Superior Quality and Reliability; Customer Satisfaction, Designing to our Customer’s needs; Competitive lead time and Comprehensive Training and Technical Support. Equipment / Materials Tools: Illustration Instruction Details Hardware Required: Bolts: 13155 – Bolt – 7/16”-13 x 1” (2ea) 11061 – Bolt – 5/16”-18 x 2” (4ea) Washers: 33010 – Flat Washer – 7/16” (4ea) 115451557 – Flat Washer – 5/16” (8ea) Nuts: 37018 – Lock Nut – 7/16”-13 (2ea) 37021 – Lock Nut – 5/16”-18 (4ea) Department: ALL Doc. No.: WI-A9-001 Author: Zachery Mullally Area: ALL Revision #: Initial Release Approved (Eng): Section: ALL Revision Date: Draft Approved (Qty): Reference Doc: Blank Page: 3 of 12 Approved (Supv): Blank Approved (PM): Quality Policy PPE Caution Proprietary Notice Document Control Waiver This document contains information proprietary to Schwarze Industries, Inc.. Any disclosure or use is expressly prohibited. It is not to be copied or reproduced in any form unless specifically permitted otherwise by the Company’s management. Documents that do not bear The Company’s official stamps are considered “Uncontrolled” Process: Dump Cylinder Valve Assembly Installation WORK INSTRUCTION Schwarze industries and its employees are committed to continued process improvement by maintaining focus to achieve: Superior Quality and Reliability; Customer Satisfaction, Designing to our Customer’s needs; Competitive lead time and Comprehensive Training and Technical Support. Equipment / Materials Tools: 5/8″ Socket/Wrench Illustration Instruction Details Install (5225566) Manifold Mount onto Sub Frame, Secure Using: 13155 – Bolt – 7/16″-13 x 1″ 33010 – Flat Washer – 7/16″ (2ea) 37018 – Lock Nut – 7/16″-13 Department: ALL Doc. No.: WI-A9-001 Author: Zachery Mullally Area: ALL Revision #: Initial Release Approved (Eng): Section: ALL Revision Date: Draft Approved (Qty): Reference Doc: Blank Page: 4 of 12 Approved (Supv): Blank Approved (PM): Quality Policy PPE Caution Proprietary Notice Document Control Waiver This document contains information proprietary to Schwarze Industries, Inc.. Any disclosure or use is expressly prohibited. It is not to be copied or reproduced in any form unless specifically permitted otherwise by the Company’s management. Documents that do not bear The Company’s official stamps are considered “Uncontrolled” Process: Dump Cylinder Valve Assembly Installation WORK INSTRUCTION ME-PFC-003-F-001 Visual Work Instruction Template Rev 08 5/29/2018 Schwarze industries and its employees are committed to continued process improvement by maintaining focus to achieve: Superior Quality and Reliability; Customer Satisfaction, Designing to our Customer’s needs; Competitive lead time and Comprehensive Training and Technical Support. Equipment / Materials Tools: 5/8″ Socket/Wrench Illustration Instruction Details Install (5225566) Manifold Mount to Sub Frame, Secure Using: 13155 – Bolt – 7/16″-13 x 1″ 33010 – Flat Washer – 7/16″ (2ea) 37018 – Lock Nut – 7/16″-13 Department: ALL Doc. No.: WI-A9-001 Author: Zachery Mullally Area: ALL Revision #: Initial Release Approved (Eng): Section: ALL Revision Date: Draft Approved (Qty): Reference Doc: Blank Page: 5 of 12 Approved (Supv): Blank Approved (PM): Quality Policy PPE Caution Proprietary Notice Document Control Waiver This document contains information proprietary to Schwarze Industries, Inc.. Any disclosure or use is expressly prohibited. It is not to be copied or reproduced in any form unless specifically permitted otherwise by the Company’s management. Documents that do not bear The Company’s official stamps are considered “Uncontrolled” Process: Dump Cylinder Valve Assembly Installation WORK INSTRUCTION ME-PFC-003-F-001 Visual Work Instruction Template Rev 08 5/29/2018 Schwarze industries and its employees are committed to continued process improvement by maintaining focus to achieve: Superior Quality and Reliability; Customer Satisfaction, Designing to our Customer’s needs; Competitive lead time and Comprehensive Training and Technical Support. Equipment / Materials Tools: 1/2″ Socket/Wrench Illustration Instruction Details Install (69660) Sun ECJ Valve Body onto (5225566) Dump Cylinder Mount Bracket, Secure Using: 11061 – Bolt – 5/16″-18 x 2″ (2ea) 11545157 – Flat Washer – 5/16″ (4ea) 37021 – Lock Nut – 5/16″-18 x 2″ (2ea) Department: ALL Doc. No.: WI-A9-001 Author: Zachery Mullally Area: ALL Revision #: Initial Release Approved (Eng): Section: ALL Revision Date: Draft Approved (Qty): Reference Doc: Blank Page: 6 of 12 Approved (Supv): Blank Approved (PM): Quality Policy PPE Caution Proprietary Notice Document Control Waiver This document contains information proprietary to Schwarze Industries, Inc.. Any disclosure or use is expressly prohibited. It is not to be copied or reproduced in any form unless specifically permitted otherwise by the Company’s management. Documents that do not bear The Company’s official stamps are considered “Uncontrolled” Process: Dump Cylinder Valve Assembly Installation WORK INSTRUCTION ME-PFC-003-F-001 Visual Work Instruction Template Rev 08 5/29/2018 Schwarze industries and its employees are committed to continued process improvement by maintaining focus to achieve: Superior Quality and Reliability; Customer Satisfaction, Designing to our Customer’s needs; Competitive lead time and Comprehensive Training and Technical Support. Equipment / Materials Tools: 1/2″ Socket/Wrench Illustration Instruction Details Install (69660) Sun ECJ Valve Body onto (5225566) Dump Cylinder Mount Bracket, Secure Using: 11061 – Bolt – 5/16″-18 x 2″ (2ea) 11545157 – Flat Washer – 5/16″ (4ea) 37021 – Lock Nut – 5/16″-18 x 2″ (2ea) Department: ALL Doc. No.: WI-A9-001 Author: Zachery Mullally Area: ALL Revision #: Initial Release Approved (Eng): Section: ALL Revision Date: Draft Approved (Qty): Reference Doc: Blank Page: 7 of 12 Approved (Supv): Blank Approved (PM): Quality Policy PPE Caution Proprietary Notice Document Control Waiver This document contains information proprietary to Schwarze Industries, Inc.. Any disclosure or use is expressly prohibited. It is not to be copied or reproduced in any form unless specifically permitted otherwise by the Company’s management. Documents that do not bear The Company’s official stamps are considered “Uncontrolled” Process: Dump Cylinder Valve Assembly Installation WORK INSTRUCTION ME-PFC-003-F-001 Visual Work Instruction Template Rev 08 5/29/2018 Schwarze industries and its employees are committed to continued process improvement by maintaining focus to achieve: Superior Quality and Reliability; Customer Satisfaction, Designing to our Customer’s needs; Competitive lead time and Comprehensive Training and Technical Support. Equipment / Materials Tools: Illustration Instruction Details Connect Hose (526484) from Top 90° Fitting to Left Fitting on Front T. Connect Hose (525098) to Left 90° Fitting. Connect Hose (526487) from T on Bottom 90° to Bottom T on Rear Fitting Connect Hose (526486) from T on Bottom 90° to 90° on Right Manifold WARNING: All Hoses are to be CAPPED until COMPLETE INSTALLATION. Failure to comply may result in FOD Contamination and Damage to Hydraulic System. Department: ALL Doc. No.: WI-A9-001 Author: Zachery Mullally Area: ALL Revision #: Initial Release Approved (Eng): Section: ALL Revision Date: Draft Approved (Qty): Reference Doc: Blank Page: 8 of 12 Approved (Supv): Blank Approved (PM): Quality Policy PPE Caution Proprietary Notice Document Control Waiver This document contains information proprietary to Schwarze Industries, Inc.. Any disclosure or use is expressly prohibited. It is not to be copied or reproduced in any form unless specifically permitted otherwise by the Company’s management. Documents that do not bear The Company’s official stamps are considered “Uncontrolled” Process: Dump Cylinder Valve Assembly Installation WORK INSTRUCTION ME-PFC-003-F-001 Visual Work Instruction Template Rev 08 5/29/2018 Schwarze industries and its employees are committed to continued process improvement by maintaining focus to achieve: Superior Quality and Reliability; Customer Satisfaction, Designing to our Customer’s needs; Competitive lead time and Comprehensive Training and Technical Support. Equipment / Materials Tools: Illustration Instruction Details Connect Hose (526485) from Top 90° Fitting to Right Fitting on Front T. Connect Hose (525098) to Right 90° Fitting. Connect Hose (526486) from T on Bottom 90° to Bottom T on Rear Fitting WARNING: All Hoses are to be CAPPED until COMPLETE INSTALLATION. Failure to comply may result in FOD Contamination and Damage to Hydraulic System. Department: ALL Doc. No.: WI-A9-001 Author: Zachery Mullally Area: ALL Revision #: Initial Release Approved (Eng): Section: ALL Revision Date: Draft Approved (Qty): Reference Doc: Blank Page: 9 of 12 Approved (Supv): Blank Approved (PM): Quality Policy PPE Caution Proprietary Notice Document Control Waiver This document contains information proprietary to Schwarze Industries, Inc.. Any disclosure or use is expressly prohibited. It is not to be copied or reproduced in any form unless specifically permitted otherwise by the Company’s management. Documents that do not bear The Company’s official stamps are considered “Uncontrolled” Process: Dump Cylinder Valve Assembly Installation WORK INSTRUCTION ME-PFC-003-F-001 Visual Work Instruction Template Rev 08 5/29/2018 Schwarze industries and its employees are committed to continued process improvement by maintaining focus to achieve: Superior Quality and Reliability; Customer Satisfaction, Designing to our Customer’s needs; Competitive lead time and Comprehensive Training and Technical Support. Equipment / Materials Tools: Illustration Instruction Details Connect Hose (526485) From Right Manifold Top 90° fitting to Front T. Connect Hose (526484) From Left Manifold Top 90° fitting to Front T. Connect Hose (525097) Hose Pressire Supply from Main Manifold to Bottom of Front T. Department: ALL Doc. No.: WI-A9-001 Author: Zachery Mullally Area: ALL Revision #: Initial Release Approved (Eng): Section: ALL Revision Date: Draft Approved (Qty): Reference Doc: Blank Page: 10 of 12 Approved (Supv): Blank Approved (PM): Quality Policy PPE Caution Proprietary Notice Document Control Waiver This document contains information proprietary to Schwarze Industries, Inc.. Any disclosure or use is expressly prohibited. It is not to be copied or reproduced in any form unless specifically permitted otherwise by the Company’s management. Documents that do not bear The Company’s official stamps are considered “Uncontrolled” Process: Dump Cylinder Valve Assembly Installation WORK INSTRUCTION ME-PFC-003-F-001 Visual Work Instruction Template Rev 08 5/29/2018 Schwarze industries and its employees are committed to continued process improvement by maintaining focus to achieve: Superior Quality and Reliability; Customer Satisfaction, Designing to our Customer’s needs; Competitive lead time and Comprehensive Training and Technical Support. Equipment / Materials Tools: Illustration Instruction Details Hoses for Top of T are not changed. Connect Hose (525098) from Left Manifold to Side of Bottom T on Rear T Fitting. Connect Hose (525097) from Return Tank to Bottom of Bottom T on Rear T Fitting. Department: ALL Doc. No.: WI-A9-001 Author: Zachery Mullally Area: ALL Revision #: Initial Release Approved (Eng): Section: ALL Revision Date: Draft Approved (Qty): Reference Doc: Blank Page: 11 of 12 Approved (Supv): Blank Approved (PM): Quality Policy PPE Caution Proprietary Notice Document Control Waiver This document contains information proprietary to Schwarze Industries, Inc.. Any disclosure or use is expressly prohibited. It is not to be copied or reproduced in any form unless specifically permitted otherwise by the Company’s management. Documents that do not bear The Company’s official stamps are considered “Uncontrolled” Process: Dump Cylinder Valve Assembly Installation WORK INSTRUCTION ME-PFC-003-F-001 Visual Work Instruction Template Rev 08 5/29/2018 Schwarze industries and its employees are committed to continued process improvement by maintaining focus to achieve: Superior Quality and Reliability; Customer Satisfaction, Designing to our Customer’s needs; Competitive lead time and Comprehensive Training and Technical Support. Equipment / Materials Tools: Illustration Instruction Details Foreign Object Debris (FOD) includes any object found in an inappropriate location that, as a result of being in that location, can damage equipment or injure personnel. FOD includes a wide range of material, including loose hardware, discarded zip-ties, cut cotterpins, rocks, sand, shop aids, tools, oil and hydraulic spills. Ensure maintenance bay is swept, and all tools are accounted for at the end of every task.

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IMPORTANT SAFETY RECALL This notice applies to your A9SE Monsoon (single engine) street sweeping vehicle(s), VIN(s): [VINS] December 2022 Dear [CUSTOMER], This notice is sent to you in accordance with the National Traffic and Motor Vehicle Safety Act. Alamo Group Inc., the parent company of Schwarze Industries LLC, has decided that a defect which relates to motor vehicle safety exists in certain A9SE Monsoon (single engine) street sweeping vehicles manufactured by Schwarze in 2021 – 2022, including in the A9SE Monsoon (single engine) vehicles with the VIN(s) shown above. As a result, Alamo Group is conducting this safety recall. We apologize for this inconvenience. We are committed to your safety and satisfaction with our products. Why is the A9SE Monsoon (single engine) vehicle recalled? The hopper hydraulic lift system allows for additional fluid to enter the hopper hydraulic lift system after the operator has disengaged the hopper lift system. If additional hydraulic fluid enters the hopper hydraulic lift system, the hopper could unexpectedly raise to its maximum height and impact overhead obstructions, causing debris from the obstruction to fall, increasing the risk of injury to individuals. What should you do? Our records show this remedy has already been completed on the above-identified vehicle by [name of dealer] on or about [date]. Thus, you need not take any further action. IMPORTANT • Your A9SE Monsoon (single engine) street sweeping vehicle is involved in safety recall 22V761 to remedy the hopper’s hydraulic lift system. • A remedy is available now. • Our records show this remedy has already been completed on the above-identified vehicle. What is the remedy? What if you no longer own this vehicle? What if you have already paid for this repair? Who should you contact if you have further questions or concerns? The corrective action is to install additional valves near the hydraulic cylinders. Please contact your local Schwarze dealer or contact the Schwarze Warranty Department ( at 800-879-7934 or warranty@schwarze.com) and report that you no longer own this vehicle. Please also report the identity of new owner, if known to you. If this condition was identified and remedied on an affected vehicle prior to this campaign, you may be eligible for reimbursement of the costs incurred for such remedy. Please contact Schwarze Warranty Department (at 800-879-7934 or warranty@schwarze.com) to pursue reimbursement. If you believe this recall remedy has not yet been performed on your vehicle or if you have any questions on this recall, please contact the Schwarze Warranty Department (at 800-879-7934 or warranty@schwarze.com). If, after contacting Schwarze, you are still not satisfied we have done our best to remedy this defect without charge and within a reasonable time, you may wish to write the Administrator, National Highway Traffic Safety Administration (NHTSA), 1200 New Jersey Avenue, SE, Washington, DC 20590, or call the toll-free Vehicle Safety Hotline at 1-888-327-4236 (TTY l-800-424-9153), or go to http://www.safercar.gov. The NHTSA Campaign Number for this recall is 22V761. NHTSA regulations require that any vehicle lessor receiving a notice of a defect pertaining to any leased motor vehicle must forward the notice to the lessee within 10 days. Thank you for your attention to this important matter; your safety is our first concern. Vice President of Sales, Marketing, and Customer Service Schwarze Industries LLC

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[October/November] 2022 To: VIN(s): Subject: Notification of Safety Recall and Recall Remedy Instructions for 22V-761 Certain A9SE Monsoon (single engine) street sweepers manufactured in 2021 – 2022 Hopper Hydraulic Lift System REASON FOR THIS SAFETY RECALL: On October 11. 2022, Alamo Group Inc., the parent company of Schwarze Industries LLC, filed a Defect Information Report with the National Highway Traffic Safety Administration (NHTSA) informing the agency that in A9SE Monsoon (single engine) street sweeping vehicles manufactured by Schwarze, the hopper hydraulic lift system which regulates the engagement and disengagement of the hopper lifting mechanism is allowing hydraulic fluid into the hydraulic lift system even after the operator disengages the lift system. If hydraulic fluid continues to flow into the hydraulic lift system after the operator disengages the lift system, the hopper could unexpectedly raise to its maximum height and impact with an overhead obstruction causing debris to fall and increasing the risk of injury to individuals. AFFECTED VEHICLES: Make and Model Number of Production Period vehicles A9SE Monsoon (single 3 October 29, 2021 – September 13, 2022 engine) REMEDY: Remedy parts are available now. Dealers will install additional valves near the hydraulic cylinders in the hopper hydraulic lift system which will allow for a closed path and the lock the regulation of the hydraulic fluid. This service must be performed on all affected vehicles at no charge to the vehicle owner. Attached please find the service procedure for completing this repair. The repair takes about one hour to complete. REIMBURSEMENT: Alamo Group will reimburse dealers for performing this remedy. OWNER LETTER MAILING DATE: Alamo Group will notify owners of this safety recall by letter mailed on or before December 9, 2022. CUSTOMER CONTACTS: Dealers should repair any A9SE Monsoon (single engine) street sweeping vehicle covered by this safety recall that arrives at their dealerships, whether or not the owner has received a safety recall letter. The Schwarze Warranty Department ( at 800-879-7934 or warranty@schwarze.com), is available to support you in executing a customer-friendly process for remedying these vehicles. NEW VEHICLES IN DEALER INVENTORY: Dealers may have covered A9SE Monsoon (single engine) street sweeping vehicles in their inventory. It is a violation of Federal law for a dealer to deliver a new motor vehicle or any new or used item of motor vehicle equipment (including a tire) covered by this notification under a sale or lease until the defect is remedied. Violation of this requirement by a dealer could result in a civil penalty against the dealer. Accordingly, you must remedy any covered A9SE Monsoon (single engine) street sweeping vehicles in your new vehicle inventory before delivery. In addition, we request that you remedy before delivery into commerce under a sale or lease any covered pre-owned A9SE Monsoon (single engine) street sweeping vehicles in your inventory. QUESTIONS & ASSISTANCE: For questions and assistance, including help in identifying whether any vehicles in your inventory are covered by this safety recall, please contact Schwarze Warranty Department (at 800-879-7934 or warranty@schwarze.com). Thank you for your attention to this important matter. Attachment: Service Procedure Vice President of Sales, Marketing, and Customer Service Schwarze Industries LLC [SERVICE PROCEDURE]

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OMB Control No.: 2127-0004 Part 573 Safety Recall Report 22V-761 The information contained in this report was submitted pursuant to 49 CFR §573 Manufacturer Name : Alamo Group Inc. Submission Date : OCT 11, 2022 NHTSA Recall No. : 22V-761 Manufacturer Recall No. : NR Manufacturer Information : Manufacturer Name : Alamo Group Inc. Address : 1627 East Walnut St Seguin TX 78155 Company phone : (830) 379-1480 Population : Number of potentially involved : 3 Estimated percentage with defect : 100 % Vehicle Information : Vehicle 1 : 2021-2022 Schwarze A9SE Monsoon (single engine) Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : Power Train : NR Descriptive Information : The recall population has been determined based on examination of manufacturing and quality control processes for the hopper hydraulic lift system in the identified A9SE Monsoon (single engine) model above. The vehicles in the recall population differ from other vehicles in that the hopper hydraulic lift system in the recalled A9SE Monsoon vehicles were manufactured with an open center valve manifold. Production Dates : OCT 29, 2021 – SEP 13, 2022 VIN Range 1 : Begin : 1FVACXFC9MHMU3720 End : 3ALACXFC0NDNM4703 ✔ Not sequential Description of Defect : Description of the Defect : The open center valve manifold of the hopper hydraulic lift system allows for unexpected and continued flow of hydraulic fluid into the lift system after the operator stops raising the hopper and (1) the hopper is over the center-ofgravity or (2) the vehicle is parked on an incline. As a result, the hopper could unexpectedly continue to lift after disengaged by operator. FMVSS 1 : NR FMVSS 2 : NR Description of the Safety Risk : In instances where the hopper is raised past the center-of-gravity or if the vehicle is parked on an incline and the hopper is raised, when the vehicle is stationary, the open center valve manifold allows the hydraulic fluid to continue to flow into the hydraulic lift system. The continued flow of hydraulic fluid into the lift system could cause the hopper to unexpectedly continue to raise and come into contact with a ceiling, tree, or other obstruction, causing debris from the overhead obstruction to fall and injure Part 573 Safety Recall Report 22V-761 Page 2 The information contained in this report was submitted pursuant to 49 CFR §573 the operator or other individuals. Description of the Cause : The A9SE Monsoon (single engine) street sweeper is a new model introduced by Schwarze in October 2021. This new model was designed with an open center valve manifold instead of a closed one in the hydraulic lift system. Identification of Any Warning that can Occur : NR Involved Components : Component Name 1 : NR Component Description : NR Component Part Number : NR Supplier Identification : Component Manufacturer Name : NR Address : NR NR Country : NR Chronology : On September 13, 2022, Schwarze was conducting testing on the hydraulic lift system for the A9SE Monsoon (single engine) street sweeper. Through the course of this testing it was discovered that while the vehicle was stationary, if the hopper was lifted by the operator above the center-of-gravity or if the hopper was lifted while the vehicle is on an incline, the hopper would continue to lift to its maximum height even after the operator disengaged the lifting mechanism. From September 13, 2022 to September 22, 2022, Schwarze conducted a safety investigation to assess the failure mode, the failure rate, and potential causes. Schwarze tested the hydraulic system and determined there was continued flow of hydraulic fluid after the lift system was disengaged by the operator. Schwarze tested a completed A9SE Monsoon vehicle on the lot and observed identical issues with the unexpected or continued lifting of the hopper. Based on this testing, Schwarze determined the issue was not isolated to a single vehicle. Schwarze then tested the hopper hydraulic lift system on the twin engine model of the A9 Monsoon which has a closed valve manifold to regulate the hopper hydraulic lift system and discovered that there were no issues with the hopper continuing to lift after Part 573 Safety Recall Report 22V-761 Page 3 The information contained in this report was submitted pursuant to 49 CFR §573 the lift system was disengaged by the operator. Schwarze compared the two hydraulic systems and determined the different open center valve manifold on the single engine A9SE Monsoon was the cause of the continued flow of hydraulic fluid into the hopper hydraulic lift system after the operator had disengaged the lift system. As of October 10, 2022, Alamo was aware of no warranty claims, no deaths, and no injuries related to this issue. Alamo has not received any customer complaints related to this issue. On October 10, 2022, Alamo decided to declare a voluntary safety recall to remedy this issue. Description of Remedy : Description of Remedy Program : Schwarze will mount additional valves near the hydraulic cylinders in the hopper hydraulic lift system. This installation of additional valves will create a closed path and not allow additional hydraulic fluid to enter the hydraulic system after the operator disengages the lift control. This remedy will be performed free of charge. Affected vehicle owners will be notified by first class mail to take their vehicle to a Schwarze affiliated dealer to have the remedy performed free of charge. If this condition was identified and remedied on an affected vehicle prior to this campaign, Schwarze will reimburse owners who have incurred the cost of such remedy. How Remedy Component Differs from Recalled Component : NR Identify How/When Recall Condition was Corrected in Production : As of September 13, 2022, Schwarze has worked to mount additional valves near the hydraulic cylinders in the hopper hydraulic lift system on vehicles in production. The additional valves in the hopper hydraulic lift system will be included on new vehicles produced after September 13, 2022. Recall Schedule : Description of Recall Schedule : Schwarze will notify all affected owners of A9SE Monsson (single engine) street sweeper vehicles of the availability of a free remedy for this issue via owner letters sent via USPS within 60 days. Planned Dealer Notification Date : DEC 14, 2022 – NR Planned Owner Notification Date : DEC 14, 2022 – NR * NR – Not Reported

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OMB Control No.: 2127-0004 Part 573 Safety Recall Report 22V-761 The information contained in this report was submitted pursuant to 49 CFR §573 Manufacturer Name : Alamo Group Inc. Submission Date : OCT 21, 2022 NHTSA Recall No. : 22V-761 Manufacturer Recall No. : NR Manufacturer Information : Manufacturer Name : Alamo Group Inc. Address : 1627 East Walnut St Seguin TX 78155 Company phone : (830) 379-1480 Population : Number of potentially involved : 3 Estimated percentage with defect : 100 % Vehicle Information : Vehicle 1 : 2021-2022 Schwarze A9SE Monsoon (single engine) Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : Power Train : NR Descriptive Information : The recall population has been determined based on examination of manufacturing and quality control processes for the hopper hydraulic lift system in the identified A9SE Monsoon (single engine) model above. The vehicles in the recall population differ from other vehicles in that the hopper hydraulic lift system in the recalled A9SE Monsoon vehicles were manufactured with an open center valve manifold. Production Dates : OCT 29, 2021 – SEP 13, 2022 VIN Range 1 : Begin : 1FVACXFC9MHMU3720 End : 3ALACXFC0NDNM4703 ✔ Not sequential Description of Defect : Description of the Defect : The open center valve manifold of the hopper hydraulic lift system allows for unexpected and continued flow of hydraulic fluid into the lift system after the operator stops raising the hopper and (1) the hopper is over the center-ofgravity or (2) the vehicle is parked on an incline. As a result, the hopper could unexpectedly continue to lift after disengaged by operator. FMVSS 1 : NR FMVSS 2 : NR Description of the Safety Risk : In instances where the hopper is raised past the center-of-gravity or if the vehicle is parked on an incline and the hopper is raised, when the vehicle is stationary, the open center valve manifold allows the hydraulic fluid to continue to flow into the hydraulic lift system. The continued flow of hydraulic fluid into the lift system could cause the hopper to unexpectedly continue to raise and come into contact with a ceiling, tree, or other obstruction, causing debris from the overhead obstruction to fall and injure Part 573 Safety Recall Report 22V-761 Page 2 The information contained in this report was submitted pursuant to 49 CFR §573 the operator or other individuals. Description of the Cause : The A9SE Monsoon (single engine) street sweeper is a new model introduced by Schwarze in October 2021. This new model was designed with an open center valve manifold instead of a closed one in the hydraulic lift system. Identification of Any Warning that can Occur : NR Involved Components : Component Name 1 : Open center manifold Component Description : Open center maifold Component Part Number : 68666 Supplier Identification : Component Manufacturer Name : NR Address : NR NR Country : NR Chronology : On September 13, 2022, Schwarze was conducting testing on the hydraulic lift system for the A9SE Monsoon (single engine) street sweeper. Through the course of this testing it was discovered that while the vehicle was stationary, if the hopper was lifted by the operator above the center-of-gravity or if the hopper was lifted while the vehicle is on an incline, the hopper would continue to lift to its maximum height even after the operator disengaged the lifting mechanism. From September 13, 2022 to September 22, 2022, Schwarze conducted a safety investigation to assess the failure mode, the failure rate, and potential causes. Schwarze tested the hydraulic system and determined there was continued flow of hydraulic fluid after the lift system was disengaged by the operator. Schwarze tested a completed A9SE Monsoon vehicle on the lot and observed identical issues with the unexpected or continued lifting of the hopper. Based on this testing, Schwarze determined the issue was not isolated to a single vehicle. Schwarze then tested the hopper hydraulic lift system on the twin engine model of the A9 Monsoon which has a closed valve manifold to regulate the hopper hydraulic lift system and discovered that there were no issues with the hopper continuing to lift after Part 573 Safety Recall Report 22V-761 Page 3 The information contained in this report was submitted pursuant to 49 CFR §573 the lift system was disengaged by the operator. Schwarze compared the two hydraulic systems and determined the different open center valve manifold on the single engine A9SE Monsoon was the cause of the continued flow of hydraulic fluid into the hopper hydraulic lift system after the operator had disengaged the lift system. As of October 10, 2022, Alamo was aware of no warranty claims, no deaths, and no injuries related to this issue. Alamo has not received any customer complaints related to this issue. On October 10, 2022, Alamo decided to declare a voluntary safety recall to remedy this issue. Description of Remedy : Description of Remedy Program : Schwarze will mount additional valves near the hydraulic cylinders in the hopper hydraulic lift system. This installation of additional valves will create a closed path and not allow additional hydraulic fluid to enter the hydraulic system after the operator disengages the lift control. This remedy will be performed free of charge. Affected vehicle owners will be notified by first class mail to take their vehicle to a Schwarze affiliated dealer to have the remedy performed free of charge. If this condition was identified and remedied on an affected vehicle prior to this campaign, Schwarze will reimburse owners who have incurred the cost of such remedy. How Remedy Component Differs from Recalled Component : NR Identify How/When Recall Condition was Corrected in Production : As of September 13, 2022, Schwarze has worked to mount additional valves near the hydraulic cylinders in the hopper hydraulic lift system on vehicles in production. The additional valves in the hopper hydraulic lift system will be included on new vehicles produced after September 13, 2022. Recall Schedule : Description of Recall Schedule : Schwarze will notify all affected owners of A9SE Monsson (single engine) street sweeper vehicles of the availability of a free remedy for this issue via owner letters sent via USPS within 60 days. Planned Dealer Notification Date : DEC 09, 2022 – NR Planned Owner Notification Date : DEC 09, 2022 – NR * NR – Not Reported

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OMB Control No.: 2127-0004 Part 573 Safety Recall Report 22V-761 The information contained in this report was submitted pursuant to 49 CFR §573 Manufacturer Name : Alamo Group Inc. Submission Date : OCT 11, 2022 NHTSA Recall No. : 22V-761 Manufacturer Recall No. : NR Manufacturer Information : Manufacturer Name : Alamo Group Inc. Address : 1627 East Walnut St Seguin TX 78155 Company phone : (830) 379-1480 Population : Number of potentially involved : 3 Estimated percentage with defect : 100 % Vehicle Information : Vehicle 1 : 2021-2022 Schwarze A9SE Monsoon (single engine) Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : Power Train : NR Descriptive Information : The recall population has been determined based on examination of manufacturing and quality control processes for the hopper hydraulic lift system in the identified A9SE Monsoon (single engine) model above. The vehicles in the recall population differ from other vehicles in that the hopper hydraulic lift system in the recalled A9SE Monsoon vehicles were manufactured with an open center valve manifold. Production Dates : OCT 29, 2021 – SEP 13, 2022 VIN Range 1 : Begin : 1FVACXFC9MHMU3720 End : 3ALACXFC0NDNM4703 ✔ Not sequential Description of Defect : Description of the Defect : The open center valve manifold of the hopper hydraulic lift system allows for unexpected and continued flow of hydraulic fluid into the lift system after the operator stops raising the hopper and (1) the hopper is over the center-ofgravity or (2) the vehicle is parked on an incline. As a result, the hopper could unexpectedly continue to lift after disengaged by operator. FMVSS 1 : NR FMVSS 2 : NR Description of the Safety Risk : In instances where the hopper is raised past the center-of-gravity or if the vehicle is parked on an incline and the hopper is raised, when the vehicle is stationary, the open center valve manifold allows the hydraulic fluid to continue to flow into the hydraulic lift system. The continued flow of hydraulic fluid into the lift system could cause the hopper to unexpectedly continue to raise and come into contact with a ceiling, tree, or other obstruction, causing debris from the overhead obstruction to fall and injure Part 573 Safety Recall Report 22V-761 Page 2 The information contained in this report was submitted pursuant to 49 CFR §573 the operator or other individuals. Description of the Cause : The A9SE Monsoon (single engine) street sweeper is a new model introduced by Schwarze in October 2021. This new model was designed with an open center valve manifold instead of a closed one in the hydraulic lift system. Identification of Any Warning that can Occur : NR Involved Components : Component Name 1 : NR Component Description : NR Component Part Number : NR Supplier Identification : Component Manufacturer Name : NR Address : NR NR Country : NR Chronology : On September 13, 2022, Schwarze was conducting testing on the hydraulic lift system for the A9SE Monsoon (single engine) street sweeper. Through the course of this testing it was discovered that while the vehicle was stationary, if the hopper was lifted by the operator above the center-of-gravity or if the hopper was lifted while the vehicle is on an incline, the hopper would continue to lift to its maximum height even after the operator disengaged the lifting mechanism. From September 13, 2022 to September 22, 2022, Schwarze conducted a safety investigation to assess the failure mode, the failure rate, and potential causes. Schwarze tested the hydraulic system and determined there was continued flow of hydraulic fluid after the lift system was disengaged by the operator. Schwarze tested a completed A9SE Monsoon vehicle on the lot and observed identical issues with the unexpected or continued lifting of the hopper. Based on this testing, Schwarze determined the issue was not isolated to a single vehicle. Schwarze then tested the hopper hydraulic lift system on the twin engine model of the A9 Monsoon which has a closed valve manifold to regulate the hopper hydraulic lift system and discovered that there were no issues with the hopper continuing to lift after Part 573 Safety Recall Report 22V-761 Page 3 The information contained in this report was submitted pursuant to 49 CFR §573 the lift system was disengaged by the operator. Schwarze compared the two hydraulic systems and determined the different open center valve manifold on the single engine A9SE Monsoon was the cause of the continued flow of hydraulic fluid into the hopper hydraulic lift system after the operator had disengaged the lift system. As of October 10, 2022, Alamo was aware of no warranty claims, no deaths, and no injuries related to this issue. Alamo has not received any customer complaints related to this issue. On October 10, 2022, Alamo decided to declare a voluntary safety recall to remedy this issue. Description of Remedy : Description of Remedy Program : Schwarze will mount additional valves near the hydraulic cylinders in the hopper hydraulic lift system. This installation of additional valves will create a closed path and not allow additional hydraulic fluid to enter the hydraulic system after the operator disengages the lift control. This remedy will be performed free of charge. Affected vehicle owners will be notified by first class mail to take their vehicle to a Schwarze affiliated dealer to have the remedy performed free of charge. If this condition was identified and remedied on an affected vehicle prior to this campaign, Schwarze will reimburse owners who have incurred the cost of such remedy. How Remedy Component Differs from Recalled Component : NR Identify How/When Recall Condition was Corrected in Production : As of September 13, 2022, Schwarze has worked to mount additional valves near the hydraulic cylinders in the hopper hydraulic lift system on vehicles in production. The additional valves in the hopper hydraulic lift system will be included on new vehicles produced after September 13, 2022. Recall Schedule : Description of Recall Schedule : Schwarze will notify all affected owners of A9SE Monsson (single engine) street sweeper vehicles of the availability of a free remedy for this issue via owner letters sent via USPS within 60 days. Planned Dealer Notification Date : DEC 14, 2022 – NR Planned Owner Notification Date : DEC 14, 2022 – NR * NR – Not Reported

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