Incorrect GAWR on Certification Label – 2020-2022 Ditch Witch VT24, VT12, VT14, & 2022 VT14MV Trailers

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INFORMATION REDACTED PURSUANT TOTHE FREEDOM OF INFORMATION ACT (FO IA), 5 U.S.C.552(8)(6) Publication Number: ID0752108 Publication Date: November 2022 Ditch Witch® Safety Notice Affected Models VT12 and VT14 trailers with HX30 or HX30G machines VT14MV trailers with MV8 machines (see list of affected VINs on next page) Attention Dealership Owners, Managers, Parts and Service Managers What Dealer Should Do 1. Read the attached customer notice for information regard ing the defect and safety risks arising from it. 2. Check safety notification search tool on Dealer Central to see a list of units in your area. 3. Factory will send VIN plates and operator’s manual update stickers for machines in your area. 4. Replace VIN plate with new plate with the same VIN. 5. Apply sticker to appropriate page in specifications chapter in operator’s manual. 6. Return removed plates to t he factory. 7. Fi le warranty claim. Parts Required • VIN plate matching the machine being updated. • Operator’s manual specifications update sticker specific to the machine being updated. Estimated Repair Time 30 minutes Compensation Parts, labor and mileage. Labor code: SER-LBRl Dealership Notes URGENT: Please perform this update as soon as possible in the interest of safety. Ditch Witch Product Support requests that you update all machines in your area by 05/31/2023. A notification will be mailed to owners of affected models in two weeks. Please note “What You Shou ld Do” section of the attached customer notice. If you have any questions, contact the Ditch Witch Product Support Group. Ditch Witch® Safety Notice 2 Affected Trailer VIN VT12: 1DST522D1L 1DST522D8N 1DST522D9N 1DST522D7N 1DST522D0N 1DST522D4N 1DST522D2N VT14: 1DST522E0L 1DST522E0L 1DST522E7M VT14MV: , 1DST522D3N to 1DST522D9N to 1DST522D4N to 1DST522Ell to 1DST522ESM to 1DST522E4N Affected Trailer VIN I , 1DST522D5N~, 1DST522D9N~, 1DST522H2N~ to 1DST522H8N~ IMPORTANT SAFETY RECALL 22V576 This notice applies to your vehicle: «Serial_Numbern Ditch Witch e Model VT12, VT14, and VT14MV trailers with HX30, HX30G, or MV8 Vacuum Excavator Dear Ditch Witch Customer: Purpose of This Notice ID0752108-C This notice is sent to you in accordance with the National Traffic and Motor Vehicle Safety Act. We have decided that a defect which relates to motor vehicle safety exists in certain 2020-2022 Ditch Witch® VT12, VT14, and VT14MV model tra ilers. Your trailer may have been manufactured with a certification label that lists incorrect Gross Axle Weight Ratings {GAWR). If the trailer is loaded in a way that places the maximum load on an axle as currently stated, there is a possibility that the load rating of one or more of the tires will be exceeded. If this occurs, there is a potential for t ire failure, which could result in the loss of control of the vehicle and could result in a crash without prior warning. What You Should Do Contact your local dealership «Dlr_Nm_l», phone number «Dlr_Phone» as soon as possible to have a new certification label installed and the operator’s manual updated at no charge. You can continue to operate your trailer, but do not load the axles to more than 3,102 kg/ 6,840 lb per axle. Your trailer Gross Vehicle Weight Rating {GVWR) and the Maximum Debris Tank Fill Level chart provided in your operator’s manual are not affected by this certification label change. The labor time necessary to perform this service correction is up to 1/2 hour. If you have sold your tra iler or vacuum excavator, please advise us of the new owner using the form below, or contact us at the email address listed below. Additional Information Your Ditch Witch dealership is best equipped to obtain parts and provide service to ensure that your vacuum excavator/trailer is corrected as promptly as possible. If, however, you take your vehicle to your dealer on the agreed service date, and they do not remedy this condition on that date or within three (3) days, we recommend you contact Product Support at The Charles Machine Works, Inc., phone number 1-800-433-6652. After contacting your dealership and The Charles Machine Works, Inc., if you are still not able to have the safety defect remedied without charge and within a reasonable time, you may wish to write the Administrator, National Highway Traffic Safety Administration, 1200 New Jersey Avenue SE, Washington, DC 20590 or call 1-888-327-4236 (TTY: 1-800-424-9153); or go to http://www.safercar.gov. Federal regulations require that any vehicle lessor receiving this recall notice must forward a copy of this notice to the lessee within ten days. ——~ —————————————————————————————-~ —— If ownership of the listed equipment has changed, please help us update our records and notify new owners by completing the fo llowing information and return ing this portion to us Registered owner: «Cust_Nm_l» Trailer Vin Number: «Serial_Number» Please complete the following. You may also email changes to DWSafety@ditchwitch.com. Sold to Address City/State/Zip ID0752108 0 Sold D Scrapped D Stolen D Change of address The Charles Machine Works, Inc. Post Office Box 66 Perry, OK 73077 IMPORTANT! SAFETY RECALL NOTICE Address Service Requested «Cust_Nm_1» «Street» «City» «st» «PostalCode» Postage will be paid by addressee The Charles Machine Works, Inc. Product Support PO Box 66 Perry, OK 73077 BUSINESS REPLY MAIL FIRST CLASS PERMIT NO 23. PERRY, OKLA NO POSTAGE NECESSARY IF MA LED IN THE UNITED STATES

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OMB Control No.: 2127-0004 Part 573 Safety Recall Report 22V-576 The information contained in this report was submitted pursuant to 49 CFR §573 Manufacturer Name : Charles Machine Works, Inc. Submission Date : OCT 14, 2022 NHTSA Recall No. : 22V-576 Manufacturer Recall No. : NR Manufacturer Information : Manufacturer Name : Charles Machine Works, Inc. Address : 1959 Fir Street Box 66 Perry OK 73077 Company phone : 580-572-2223 Population : Number of potentially involved : 1,087 Estimated percentage with defect : 100 % Vehicle Information : Vehicle 1 : 2022-2022 Ditch Witch VT14MV Vehicle Type : Body Style : Power Train : NR Descriptive Information : Trailers have tires installed that do not meet or exceed the axle weight ratings on the VIN plates per 49 CFR 571.120 section 5.1.2. The first production of these units occurred on June 24, 2022. Those products manufactured on or after that date until the change was discovered on July 18, 2022 are the subject range of potentially affected products. Production Dates : APR 01, 2020 – JUL 18, 2022 VIN Range 1 : Begin : 1DST522H2N1704601 End : 1DST522H8N1704604 Not sequential Vehicle 2 : 2020-2022 Ditch Witch VT24 Vehicle Type : Body Style : Power Train : NR Descriptive Information : Trailers have tires installed that do not meet or exceed the axle weight ratings on the VIN plates per 49 CFR 571.120 section 5.1.2. Tire change occurred on September 1, 2020. Those products manufactured on or after that date until the change was discovered on July 19, 2022 are the subject range of potentially affected products. Production Dates : SEP 01, 2020 – JUL 19, 2022 VIN Range 1 : Begin : 1DST722M7l1701827 End : 1DST722M8N1701581 Not sequential Part 573 Safety Recall Report 22V-576 Page 2 The information contained in this report was submitted pursuant to 49 CFR §573 Vehicle 3 : 2020-2022 Ditch Witch VT12 Vehicle Type : Body Style : Power Train : NR Descriptive Information : Trailers have tires installed that do not meet or exceed the axle weight ratings on the VIN plates per 49 CFR 571.120 section 5.1.2. Tire change occurred on April 1, 2020. Those products manufactured on or after that date until the change was discovered on September 22, 2022 are the subject range of potentially affected products. Production Dates : APR 01, 2020 – SEP 22, 2022 VIN Range 1 : Begin : 1DST522D1L1702896 End : 1DST522D7L1702983 Not sequential VIN Range 2 : Begin : 1DST522DXM1702901 End : 1DST522D6M1703091 Not sequential VIN Range 3 : Begin : 1DST522D8N1702901 End : 1DST522D5N1703004 Not sequential VIN Range 4 : Begin : 1DST522D9n1703006 End : 1DST522D1N1703016 Not sequential VIN Range 5 : Begin : 1DST522D7N1703019 End : 1DST522D0N1703024 Not sequential VIN Range 6 : Begin : 1DST522D4N1703026 End : 1DST522D9N1703037 Not sequential VIN Range 7 : Begin : 1DST522D2N1703039 End : 1DST522D4N1703043 Not sequential Vehicle 4 : 2020-2022 Ditch Witch VT14 Vehicle Type : Body Style : Power Train : NR Descriptive Information : Trailers have tires installed that do not meet or exceed the axle weight ratings on the VIN plates per 49 CFR 571.120 section 5.1.2. Tire change occurred on September 1, 2020. Those products manufactured on or after that date until the change was discovered on July 19, 2022 are the subject range of potentially affected products. Production Dates : SEP 01, 2020 – JUL 19, 2022 VIN Range 1 : Begin : 1DST522E0L1702459 End : 1DST522E4N1702371 Not sequential Part 573 Safety Recall Report 22V-576 Page 3 The information contained in this report was submitted pursuant to 49 CFR §573 Description of Noncompliance : Description of the Noncompliance : 49 CFR 571.120 Sect. 5.1.2 requires that the sum of the maximum load ratings of the tires fitted to an axle shall not be less than the gross axle weight rating (GAWR) of the axle system as specified on the trailer’s certification label. The affected trailers were shipped with a GAWR on the certification label that is greater than the tire ratings. For the VT24 trailer, the GAWR on the label was 12,000 lbs. per axle, and the installed tires are rated at 5,675 lbs each, which supports a maximum GAWR of 11,350 lbs per axle. For the VT12, VT14, and VT14MV trailers, the axle ratings were 7,000 lbs per axle, and the installed tires are rated at 3,420 lbs each, which supports a maximum GAWR of 6,840 lbs per axle. When affected trailer models are designed and intended to carry only permanently mounted vacuum excavator equipment and the fluid that is vacuumed into the tank. The trailers are designed such that, when they are loaded to their maximum GVWR, the axle weights are below the GAWR on the certification label, and the installed tires are sufficient to carry the loaded trailer. When the VT24 trailer is loaded to its GVWR of 24,000 lbs, the maximum axle weight will be 22,200 lbs, or 11,100 lbs per axle. The installed tires support a GAWR of 11,350 lbs each. When the VT14 or VT14MV trailers are loaded to their GVWR of 14,000 lbs, the maximum axle weight will be 13,000 lbs, or 6,500 lbs per axle. The installed tires support a GAWR of 6,840 lbs each. When the VT12 trailers are loaded to their GVWR of 12,000 lbs, the maximum axle weight will be 10,300 lbs, or 5,150 lbs per axle. The installed tires support a GAWR of 6,840 lbs each. FMVSS 1 : NR FMVSS 2 : NR Description of the Safety Risk : The tires fitted on the trailers are capable of safely carrying the trailers’ maximum GVWR. However, if the customer loads the trailer axles to the GAWR on the VIN plate, the trailer GVWR and the tire load ratings will be exceeded, which is why the recall will involve providing corrected VIN (certification) plates and corrected instructions identifying the correct axle weight rating and tire pressure. There have been 0 reported incidents in the field and 0 reported injuries. Description of the Cause : NR Identification of Any Warning that can Occur : NR Involved Components : Component Name 1 : NR Component Description : NR Component Part Number : NR Part 573 Safety Recall Report 22V-576 Page 4 The information contained in this report was submitted pursuant to 49 CFR §573 Supplier Identification : Component Manufacturer Name : NR Address : NR NR Country : NR Chronology : Ditch Witch originally understood the ratings to be a non-compliance issue pursuant to labeling requirements and submitted an Inconsequential Non-Compliance petition on August 26, 2022. After further review, Ditch Witch would like to conduct a recall to correct the labeling. Description of Remedy : Description of Remedy Program : Dealers and customers will be notified of the correct axle weight rating for the installed tires. A corrected certification label (VIN plate) and corrected operator instructions with updated ratings and revised tire pressure recommendations will be provided with the correct axle weight rating. How Remedy Component Differs from Recalled Component : Ditch Witch is not recalling a component; it is providing corrected GAWR ratings and corrected operator instructions for the trailers. Identify How/When Recall Condition was Corrected in Production : On July 18, 2022, the VT24, VT14, and the VT14MV certification plates were corrected, and production with the new certification plates began on July 19, 2022. On September 21, 2022, the VT certification plates were corrected, and production with the new certification plates began on September 22, 2022. Recall Schedule : Description of Recall Schedule : NR Planned Dealer Notification Date : NOV 21, 2022 – DEC 08, 2022 Planned Owner Notification Date : DEC 05, 2022 – DEC 15, 2022 * NR – Not Reported

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OMB Control No.: 2127-0004 Part 573 Safety Recall Report 22V-576 The information contained in this report was submitted pursuant to 49 CFR §573 Manufacturer Name : Charles Machine Works, Inc. Submission Date : JAN 10, 2023 NHTSA Recall No. : 22V-576 Manufacturer Recall No. : 22V576 Manufacturer Information : Manufacturer Name : Charles Machine Works, Inc. Address : 1959 Fir Street Box 66 Perry OK 73077 Company phone : 580-572-2223 Population : Number of potentially involved : 1,087 Estimated percentage with defect : 100 % Vehicle Information : Vehicle 1 : 2022-2022 Ditch Witch VT14MV Vehicle Type : Body Style : Power Train : NR Descriptive Information : Trailers have tires installed that do not meet or exceed the axle weight ratings on the VIN plates per 49 CFR 571.120 section 5.1.2. The first production of these units occurred on June 24, 2022. Those products manufactured on or after that date until the change was discovered on July 18, 2022 are the subject range of potentially affected products. Production Dates : APR 01, 2020 – JUL 18, 2022 VIN Range 1 : Begin : 1DST522H2N1704601 End : 1DST522H8N1704604 Not sequential Vehicle 2 : 2020-2022 Ditch Witch VT14 Vehicle Type : Body Style : Power Train : NR Descriptive Information : Trailers have tires installed that do not meet or exceed the axle weight ratings on the VIN plates per 49 CFR 571.120 section 5.1.2. Tire change occurred on September 1, 2020. Those products manufactured on or after that date until the change was discovered on July 19, 2022 are the subject range of potentially affected products. Production Dates : SEP 01, 2020 – JUL 19, 2022 VIN Range 1 : Begin : 1DST522E0L1702459 End : 1DST522E4N1702371 Not sequential Part 573 Safety Recall Report 22V-576 Page 2 The information contained in this report was submitted pursuant to 49 CFR §573 Vehicle 3 : 2020-2022 Ditch Witch VT12 Vehicle Type : Body Style : Power Train : NR Descriptive Information : Trailers have tires installed that do not meet or exceed the axle weight ratings on the VIN plates per 49 CFR 571.120 section 5.1.2. Tire change occurred on April 1, 2020. Those products manufactured on or after that date until the change was discovered on September 22, 2022 are the subject range of potentially affected products. Production Dates : APR 01, 2020 – SEP 22, 2022 VIN Range 1 : Begin : 1DST522D1L1702896 End : 1DST522D7L1702983 Not sequential VIN Range 2 : Begin : 1DST522DXM1702901 End : 1DST522D6M1703091 Not sequential VIN Range 3 : Begin : 1DST522D8N1702901 End : 1DST522D5N1703004 Not sequential VIN Range 4 : Begin : 1DST522D9n1703006 End : 1DST522D1N1703016 Not sequential VIN Range 5 : Begin : 1DST522D7N1703019 End : 1DST522D0N1703024 Not sequential VIN Range 6 : Begin : 1DST522D4N1703026 End : 1DST522D9N1703037 Not sequential VIN Range 7 : Begin : 1DST522D2N1703039 End : 1DST522D4N1703043 Not sequential Vehicle 4 : 2020-2022 Ditch Witch VT24 Vehicle Type : Body Style : Power Train : NR Descriptive Information : Trailers have tires installed that do not meet or exceed the axle weight ratings on the VIN plates per 49 CFR 571.120 section 5.1.2. Tire change occurred on September 1, 2020. Those products manufactured on or after that date until the change was discovered on July 19, 2022 are the subject range of potentially affected products. Production Dates : SEP 01, 2020 – JUL 19, 2022 VIN Range 1 : Begin : 1DST722M7l1701827 End : 1DST722M8N1701581 Not sequential Part 573 Safety Recall Report 22V-576 Page 3 The information contained in this report was submitted pursuant to 49 CFR §573 Description of Noncompliance : Description of the Noncompliance : 49 CFR 571.120 Sect. 5.1.2 requires that the sum of the maximum load ratings of the tires fitted to an axle shall not be less than the gross axle weight rating (GAWR) of the axle system as specified on the trailer’s certification label. The affected trailers were shipped with a GAWR on the certification label that is greater than the tire ratings. For the VT24 trailer, the GAWR on the label was 12,000 lbs. per axle, and the installed tires are rated at 5,675 lbs each, which supports a maximum GAWR of 11,350 lbs per axle. For the VT12, VT14, and VT14MV trailers, the axle ratings were 7,000 lbs per axle, and the installed tires are rated at 3,420 lbs each, which supports a maximum GAWR of 6,840 lbs per axle. When affected trailer models are designed and intended to carry only permanently mounted vacuum excavator equipment and the fluid that is vacuumed into the tank. The trailers are designed such that, when they are loaded to their maximum GVWR, the axle weights are below the GAWR on the certification label, and the installed tires are sufficient to carry the loaded trailer. When the VT24 trailer is loaded to its GVWR of 24,000 lbs, the maximum axle weight will be 22,200 lbs, or 11,100 lbs per axle. The installed tires support a GAWR of 11,350 lbs each. When the VT14 or VT14MV trailers are loaded to their GVWR of 14,000 lbs, the maximum axle weight will be 13,000 lbs, or 6,500 lbs per axle. The installed tires support a GAWR of 6,840 lbs each. When the VT12 trailers are loaded to their GVWR of 12,000 lbs, the maximum axle weight will be 10,300 lbs, or 5,150 lbs per axle. The installed tires support a GAWR of 6,840 lbs each. FMVSS 1 : NR FMVSS 2 : NR Description of the Safety Risk : If the trailer is loaded in a way that places the maximum load on an axle as currently stated, there is a possibility that the load rating of one or more of the tires will be exceeded. If this occurs, there is a potential for tire failure, which could result in the loss of control of the vehicle and could result in a crash without prior warning. The tires fitted on the trailers are capable of safely carrying the trailers’ maximum GVWR. However, if the customer loads the trailer axles to the GAWR on the VIN plate, the trailer GVWR and the tire load ratings will be exceeded, which is why the recall will involve providing corrected VIN (certification) plates and corrected instructions identifying the correct axle weight rating and tire pressure. There have been 0 reported incidents in the field and 0 reported injuries. Description of the Cause : NR Identification of Any Warning that can Occur : NR Involved Components : Part 573 Safety Recall Report 22V-576 Page 4 The information contained in this report was submitted pursuant to 49 CFR §573 Component Name 1 : This is inapplicable. Component Description : This noncompliance does not involve a component. Component Part Number : NR Supplier Identification : Component Manufacturer Name : NR Address : NR NR Country : NR Chronology : Ditch Witch originally understood the ratings to be a non-compliance issue pursuant to labeling requirements and submitted an Inconsequential Non-Compliance petition on August 26, 2022. After further review, Ditch Witch would like to conduct a recall to correct the labeling. Description of Remedy : Description of Remedy Program : Dealers and customers will be notified of the correct axle weight rating for the installed tires. A corrected certification label (VIN plate) and corrected operator instructions with updated ratings and revised tire pressure recommendations will be provided with the correct axle weight rating. How Remedy Component Differs from Recalled Component : Ditch Witch is not recalling a component; it is providing corrected GAWR ratings and corrected operator instructions for the trailers. Identify How/When Recall Condition was Corrected in Production : On July 18, 2022, the VT24, VT14, and the VT14MV certification plates were corrected, and production with the new certification plates began on July 19, 2022. On September 21, 2022, the VT certification plates were corrected, and production with the new certification plates began on September 22, 2022. Recall Schedule : Description of Recall Schedule : All dealer notifications were sent by 11/23/2022. All owner notifications were sent by 12/30/2022. Both steps have been completed. Planned Dealer Notification Date : NOV 21, 2022 – NOV 23, 2022 Planned Owner Notification Date : DEC 19, 2022 – DEC 30, 2022 Part 573 Safety Recall Report 22V-576 Page 5 The information contained in this report was submitted pursuant to 49 CFR §573 * NR – Not Reported

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OMB Control No.: 2127-0004 Part 573 Safety Recall Report 22V-576 The information contained in this report was submitted pursuant to 49 CFR §573 Manufacturer Name : Charles Machine Works, Inc. Submission Date : JAN 06, 2023 NHTSA Recall No. : 22V-576 Manufacturer Recall No. : NR Manufacturer Information : Manufacturer Name : Charles Machine Works, Inc. Address : 1959 Fir Street Box 66 Perry OK 73077 Company phone : 580-572-2223 Population : Number of potentially involved : 1,087 Estimated percentage with defect : 100 % Vehicle Information : Vehicle 1 : 2022-2022 Ditch Witch VT14MV Vehicle Type : Body Style : Power Train : NR Descriptive Information : Trailers have tires installed that do not meet or exceed the axle weight ratings on the VIN plates per 49 CFR 571.120 section 5.1.2. The first production of these units occurred on June 24, 2022. Those products manufactured on or after that date until the change was discovered on July 18, 2022 are the subject range of potentially affected products. Production Dates : APR 01, 2020 – JUL 18, 2022 VIN Range 1 : Begin : 1DST522H2N1704601 End : 1DST522H8N1704604 Not sequential Vehicle 2 : 2020-2022 Ditch Witch VT24 Vehicle Type : Body Style : Power Train : NR Descriptive Information : Trailers have tires installed that do not meet or exceed the axle weight ratings on the VIN plates per 49 CFR 571.120 section 5.1.2. Tire change occurred on September 1, 2020. Those products manufactured on or after that date until the change was discovered on July 19, 2022 are the subject range of potentially affected products. Production Dates : SEP 01, 2020 – JUL 19, 2022 VIN Range 1 : Begin : 1DST722M7l1701827 End : 1DST722M8N1701581 Not sequential Part 573 Safety Recall Report 22V-576 Page 2 The information contained in this report was submitted pursuant to 49 CFR §573 Vehicle 3 : 2020-2022 Ditch Witch VT12 Vehicle Type : Body Style : Power Train : NR Descriptive Information : Trailers have tires installed that do not meet or exceed the axle weight ratings on the VIN plates per 49 CFR 571.120 section 5.1.2. Tire change occurred on April 1, 2020. Those products manufactured on or after that date until the change was discovered on September 22, 2022 are the subject range of potentially affected products. Production Dates : APR 01, 2020 – SEP 22, 2022 VIN Range 1 : Begin : 1DST522D1L1702896 End : 1DST522D7L1702983 Not sequential VIN Range 2 : Begin : 1DST522DXM1702901 End : 1DST522D6M1703091 Not sequential VIN Range 3 : Begin : 1DST522D8N1702901 End : 1DST522D5N1703004 Not sequential VIN Range 4 : Begin : 1DST522D9n1703006 End : 1DST522D1N1703016 Not sequential VIN Range 5 : Begin : 1DST522D7N1703019 End : 1DST522D0N1703024 Not sequential VIN Range 6 : Begin : 1DST522D4N1703026 End : 1DST522D9N1703037 Not sequential VIN Range 7 : Begin : 1DST522D2N1703039 End : 1DST522D4N1703043 Not sequential Vehicle 4 : 2020-2022 Ditch Witch VT14 Vehicle Type : Body Style : Power Train : NR Descriptive Information : Trailers have tires installed that do not meet or exceed the axle weight ratings on the VIN plates per 49 CFR 571.120 section 5.1.2. Tire change occurred on September 1, 2020. Those products manufactured on or after that date until the change was discovered on July 19, 2022 are the subject range of potentially affected products. Production Dates : SEP 01, 2020 – JUL 19, 2022 VIN Range 1 : Begin : 1DST522E0L1702459 End : 1DST522E4N1702371 Not sequential Part 573 Safety Recall Report 22V-576 Page 3 The information contained in this report was submitted pursuant to 49 CFR §573 Description of Noncompliance : Description of the Noncompliance : 49 CFR 571.120 Sect. 5.1.2 requires that the sum of the maximum load ratings of the tires fitted to an axle shall not be less than the gross axle weight rating (GAWR) of the axle system as specified on the trailer’s certification label. The affected trailers were shipped with a GAWR on the certification label that is greater than the tire ratings. For the VT24 trailer, the GAWR on the label was 12,000 lbs. per axle, and the installed tires are rated at 5,675 lbs each, which supports a maximum GAWR of 11,350 lbs per axle. For the VT12, VT14, and VT14MV trailers, the axle ratings were 7,000 lbs per axle, and the installed tires are rated at 3,420 lbs each, which supports a maximum GAWR of 6,840 lbs per axle. When affected trailer models are designed and intended to carry only permanently mounted vacuum excavator equipment and the fluid that is vacuumed into the tank. The trailers are designed such that, when they are loaded to their maximum GVWR, the axle weights are below the GAWR on the certification label, and the installed tires are sufficient to carry the loaded trailer. When the VT24 trailer is loaded to its GVWR of 24,000 lbs, the maximum axle weight will be 22,200 lbs, or 11,100 lbs per axle. The installed tires support a GAWR of 11,350 lbs each. When the VT14 or VT14MV trailers are loaded to their GVWR of 14,000 lbs, the maximum axle weight will be 13,000 lbs, or 6,500 lbs per axle. The installed tires support a GAWR of 6,840 lbs each. When the VT12 trailers are loaded to their GVWR of 12,000 lbs, the maximum axle weight will be 10,300 lbs, or 5,150 lbs per axle. The installed tires support a GAWR of 6,840 lbs each. FMVSS 1 : NR FMVSS 2 : NR Description of the Safety Risk : If the trailer is loaded in a way that places the maximum load on an axle as currently stated, there is a possibility that the load rating of one or more of the tires will be exceeded. If this occurs, there is a potential for tire failure, which could result in the loss of control of the vehicle and could result in a crash without prior warning. The tires fitted on the trailers are capable of safely carrying the trailers’ maximum GVWR. However, if the customer loads the trailer axles to the GAWR on the VIN plate, the trailer GVWR and the tire load ratings will be exceeded, which is why the recall will involve providing corrected VIN (certification) plates and corrected instructions identifying the correct axle weight rating and tire pressure. There have been 0 reported incidents in the field and 0 reported injuries. Description of the Cause : NR Identification of Any Warning that can Occur : NR Involved Components : Part 573 Safety Recall Report 22V-576 Page 4 The information contained in this report was submitted pursuant to 49 CFR §573 Component Name 1 : This is inapplicable. Component Description : This noncompliance does not involve a component. Component Part Number : NR Supplier Identification : Component Manufacturer Name : NR Address : NR NR Country : NR Chronology : Ditch Witch originally understood the ratings to be a non-compliance issue pursuant to labeling requirements and submitted an Inconsequential Non-Compliance petition on August 26, 2022. After further review, Ditch Witch would like to conduct a recall to correct the labeling. Description of Remedy : Description of Remedy Program : Dealers and customers will be notified of the correct axle weight rating for the installed tires. A corrected certification label (VIN plate) and corrected operator instructions with updated ratings and revised tire pressure recommendations will be provided with the correct axle weight rating. How Remedy Component Differs from Recalled Component : Ditch Witch is not recalling a component; it is providing corrected GAWR ratings and corrected operator instructions for the trailers. Identify How/When Recall Condition was Corrected in Production : On July 18, 2022, the VT24, VT14, and the VT14MV certification plates were corrected, and production with the new certification plates began on July 19, 2022. On September 21, 2022, the VT certification plates were corrected, and production with the new certification plates began on September 22, 2022. Recall Schedule : Description of Recall Schedule : NR Planned Dealer Notification Date : NOV 21, 2022 – DEC 08, 2022 Planned Owner Notification Date : DEC 05, 2022 – DEC 15, 2022 Part 573 Safety Recall Report 22V-576 Page 5 The information contained in this report was submitted pursuant to 49 CFR §573 * NR – Not Reported

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OMB Control No.: 2127-0004 Part 573 Safety Recall Report 22V-576 The information contained in this report was submitted pursuant to 49 CFR §573 Manufacturer Name : Charles Machine Works, Inc. Submission Date : JAN 10, 2023 NHTSA Recall No. : 22V-576 Manufacturer Recall No. : 22V576 Manufacturer Information : Manufacturer Name : Charles Machine Works, Inc. Address : 1959 Fir Street Box 66 Perry OK 73077 Company phone : 580-572-2223 Population : Number of potentially involved : 1,087 Estimated percentage with defect : 100 % Vehicle Information : Vehicle 1 : 2022-2022 Ditch Witch VT14MV Vehicle Type : Body Style : Power Train : NR Descriptive Information : Trailers have tires installed that do not meet or exceed the axle weight ratings on the VIN plates per 49 CFR 571.120 section 5.1.2. The first production of these units occurred on June 24, 2022. Those products manufactured on or after that date until the change was discovered on July 18, 2022 are the subject range of potentially affected products. Production Dates : APR 01, 2020 – JUL 18, 2022 VIN Range 1 : Begin : 1DST522H2N1704601 End : 1DST522H8N1704604 Not sequential Vehicle 2 : 2020-2022 Ditch Witch VT14 Vehicle Type : Body Style : Power Train : NR Descriptive Information : Trailers have tires installed that do not meet or exceed the axle weight ratings on the VIN plates per 49 CFR 571.120 section 5.1.2. Tire change occurred on September 1, 2020. Those products manufactured on or after that date until the change was discovered on July 19, 2022 are the subject range of potentially affected products. Production Dates : SEP 01, 2020 – JUL 19, 2022 VIN Range 1 : Begin : 1DST522E0L1702459 End : 1DST522E4N1702371 Not sequential Part 573 Safety Recall Report 22V-576 Page 2 The information contained in this report was submitted pursuant to 49 CFR §573 Vehicle 3 : 2020-2022 Ditch Witch VT12 Vehicle Type : Body Style : Power Train : NR Descriptive Information : Trailers have tires installed that do not meet or exceed the axle weight ratings on the VIN plates per 49 CFR 571.120 section 5.1.2. Tire change occurred on April 1, 2020. Those products manufactured on or after that date until the change was discovered on September 22, 2022 are the subject range of potentially affected products. Production Dates : APR 01, 2020 – SEP 22, 2022 VIN Range 1 : Begin : 1DST522D1L1702896 End : 1DST522D7L1702983 Not sequential VIN Range 2 : Begin : 1DST522DXM1702901 End : 1DST522D6M1703091 Not sequential VIN Range 3 : Begin : 1DST522D8N1702901 End : 1DST522D5N1703004 Not sequential VIN Range 4 : Begin : 1DST522D9n1703006 End : 1DST522D1N1703016 Not sequential VIN Range 5 : Begin : 1DST522D7N1703019 End : 1DST522D0N1703024 Not sequential VIN Range 6 : Begin : 1DST522D4N1703026 End : 1DST522D9N1703037 Not sequential VIN Range 7 : Begin : 1DST522D2N1703039 End : 1DST522D4N1703043 Not sequential Vehicle 4 : 2020-2022 Ditch Witch VT24 Vehicle Type : Body Style : Power Train : NR Descriptive Information : Trailers have tires installed that do not meet or exceed the axle weight ratings on the VIN plates per 49 CFR 571.120 section 5.1.2. Tire change occurred on September 1, 2020. Those products manufactured on or after that date until the change was discovered on July 19, 2022 are the subject range of potentially affected products. Production Dates : SEP 01, 2020 – JUL 19, 2022 VIN Range 1 : Begin : 1DST722M7l1701827 End : 1DST722M8N1701581 Not sequential Part 573 Safety Recall Report 22V-576 Page 3 The information contained in this report was submitted pursuant to 49 CFR §573 Description of Noncompliance : Description of the Noncompliance : 49 CFR 571.120 Sect. 5.1.2 requires that the sum of the maximum load ratings of the tires fitted to an axle shall not be less than the gross axle weight rating (GAWR) of the axle system as specified on the trailer’s certification label. The affected trailers were shipped with a GAWR on the certification label that is greater than the tire ratings. For the VT24 trailer, the GAWR on the label was 12,000 lbs. per axle, and the installed tires are rated at 5,675 lbs each, which supports a maximum GAWR of 11,350 lbs per axle. For the VT12, VT14, and VT14MV trailers, the axle ratings were 7,000 lbs per axle, and the installed tires are rated at 3,420 lbs each, which supports a maximum GAWR of 6,840 lbs per axle. When affected trailer models are designed and intended to carry only permanently mounted vacuum excavator equipment and the fluid that is vacuumed into the tank. The trailers are designed such that, when they are loaded to their maximum GVWR, the axle weights are below the GAWR on the certification label, and the installed tires are sufficient to carry the loaded trailer. When the VT24 trailer is loaded to its GVWR of 24,000 lbs, the maximum axle weight will be 22,200 lbs, or 11,100 lbs per axle. The installed tires support a GAWR of 11,350 lbs each. When the VT14 or VT14MV trailers are loaded to their GVWR of 14,000 lbs, the maximum axle weight will be 13,000 lbs, or 6,500 lbs per axle. The installed tires support a GAWR of 6,840 lbs each. When the VT12 trailers are loaded to their GVWR of 12,000 lbs, the maximum axle weight will be 10,300 lbs, or 5,150 lbs per axle. The installed tires support a GAWR of 6,840 lbs each. FMVSS 1 : NR FMVSS 2 : NR Description of the Safety Risk : If the trailer is loaded in a way that places the maximum load on an axle as currently stated, there is a possibility that the load rating of one or more of the tires will be exceeded. If this occurs, there is a potential for tire failure, which could result in the loss of control of the vehicle and could result in a crash without prior warning. The tires fitted on the trailers are capable of safely carrying the trailers’ maximum GVWR. However, if the customer loads the trailer axles to the GAWR on the VIN plate, the trailer GVWR and the tire load ratings will be exceeded, which is why the recall will involve providing corrected VIN (certification) plates and corrected instructions identifying the correct axle weight rating and tire pressure. There have been 0 reported incidents in the field and 0 reported injuries. Description of the Cause : NR Identification of Any Warning that can Occur : NR Involved Components : Part 573 Safety Recall Report 22V-576 Page 4 The information contained in this report was submitted pursuant to 49 CFR §573 Component Name 1 : This is inapplicable. Component Description : This noncompliance does not involve a component. Component Part Number : NR Supplier Identification : Component Manufacturer Name : NR Address : NR NR Country : NR Chronology : Ditch Witch originally understood the ratings to be a non-compliance issue pursuant to labeling requirements and submitted an Inconsequential Non-Compliance petition on August 26, 2022. After further review, Ditch Witch would like to conduct a recall to correct the labeling. Description of Remedy : Description of Remedy Program : Dealers and customers will be notified of the correct axle weight rating for the installed tires. A corrected certification label (VIN plate) and corrected operator instructions with updated ratings and revised tire pressure recommendations will be provided with the correct axle weight rating. How Remedy Component Differs from Recalled Component : Ditch Witch is not recalling a component; it is providing corrected GAWR ratings and corrected operator instructions for the trailers. Identify How/When Recall Condition was Corrected in Production : On July 18, 2022, the VT24, VT14, and the VT14MV certification plates were corrected, and production with the new certification plates began on July 19, 2022. On September 21, 2022, the VT certification plates were corrected, and production with the new certification plates began on September 22, 2022. Recall Schedule : Description of Recall Schedule : All dealer notifications were sent by 11/23/2022. All owner notifications were sent by 12/30/2022. Both steps have been completed. Planned Dealer Notification Date : NOV 21, 2022 – NOV 23, 2022 Planned Owner Notification Date : DEC 19, 2022 – DEC 30, 2022 Part 573 Safety Recall Report 22V-576 Page 5 The information contained in this report was submitted pursuant to 49 CFR §573 * NR – Not Reported

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OMB Control No.: 2127-0004 Part 573 Safety Recall Report 22V-576 The information contained in this report was submitted pursuant to 49 CFR §573 Manufacturer Name : Charles Machine Works, Inc. Submission Date : AUG 15, 2022 NHTSA Recall No. : 22V-576 Manufacturer Recall No. : NR Manufacturer Information : Manufacturer Name : Charles Machine Works, Inc. Address : 1959 Fir Street Box 66 Perry OK 73077 Company phone : 580-572-2223 Population : Number of potentially involved : 478 Estimated percentage with defect : 100 % Vehicle Information : Vehicle 1 : 2020-2022 Ditch Witch VT24 Vehicle Type : Body Style : Power Train : NR Descriptive Information : Tire change occurred on September 1, 2020. Those products manufactured on or after that date until the change was discovered on July 12, 2022 are the subject range of potentially affected products. Production Dates : SEP 01, 2020 – JUL 12, 2022 VIN Range 1 : Begin : 1DST722M4M1701401 End : 1DST722M5N1701568 Not sequential Part 573 Safety Recall Report 22V-576 Page 2 The information contained in this report was submitted pursuant to 49 CFR §573 Description of Noncompliance : Description of the Noncompliance : 49 FR 571.120 Sect. S5.1.2 requires that the sum of the maximum load ratings of the tires fitted to an axle shall be not less than the gross axle weight rating (GAWR) of the axle system as specified on the trailer’s certification label. As described below, the tire rating is less than axle weight rating that is indicate on the trailer’s VIN plate (ie the trailer’s certification label). There have been 0 reported incidents in the field and 0 reported injuries. The axle rating on the VT24 trailer VIN plate is 12,000 lbs. per axle. The specified tire rating on the engineering drawings for the tire/wheel assembly 205-0017 is 6,000 lbs. Engineering recently discovered that on or around September 1, 2020, the supplier changed tire brands and we started receiving tires rated at 5,675 lbs. The VT24 is a trailer for Ditch Witch vacuum excavators with 800-gallon spoils tanks. The VT24 trailer is designed and intended to carry only a Ditch Witch vacuum excavator. It is not designed to be used for any other load. The gross vehicle weight rating (gvwr) for the VT24 trailer is 24,000 lbs. Trailer gross vehicle weight is the sum of the axle weights and the tongue weight. Axle weights and tongue weights vary depending on the vacuum excavator configuration and the water and spoils load. When the trailer is loaded to the maximum gvwr of 24,000 lbs., the maximum axle weight possible is 22,200 lbs., or 11,100 lbs. per axle. (24,000 lbs. gvwr – 1,800 lbs. min. tongue weight = 22,200 lbs. on 2 axles). The tongue weight is 1,800 lbs. or greater with all configurations and options available. The 5,675 lb. rated tires allow for an axle weight up to 22,700 lbs., or 11,350 lbs. per axle, which is greater than the maximum achievable axle weight of 22,200 lbs., or 11,100 lbs. per axle. (5,675 lbs./tire x 4 = 22,700 lbs.) The 5,675 lb. rated tires on the VT24 trailer cannot be overloaded without exceeding the trailer gvwr of 24,000 lbs FMVSS 1 : 120 – Wheels and rims- other than passenger cars FMVSS 2 : NR Description of the Safety Risk : None, as the 5,675 lb. rated tires on the VT24 trailer cannot be overloaded without exceeding the trailer gvwr of 24,000 lbs Description of the Cause : NR Identification of Any Warning that can Occur : NR Involved Components : Component Name 1 : NR Component Description : NR Component Part Number : NR Part 573 Safety Recall Report 22V-576 Page 3 The information contained in this report was submitted pursuant to 49 CFR §573 Supplier Identification : Component Manufacturer Name : NR Address : NR NR Country : NR Chronology : Charles Machine Works plans to submit a petition for Inconsequential Noncompliance for this matter. Description of Remedy : Description of Remedy Program : NR How Remedy Component Differs from Recalled Component : NR Identify How/When Recall Condition was Corrected in Production : NR Recall Schedule : Description of Recall Schedule : NR Planned Dealer Notification Date : NR – NR Planned Owner Notification Date : NR – NR * NR – Not Reported

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