Suspension Pivot Bolt Improperly Tightened – 2022-2023 STE Hackney Kidron Refrigerated Trailers

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OMB Control No.: 2127-0004 Part 573 Safety Recall Report 23V-363 The information contained in this report was submitted pursuant to 49 CFR §573 Manufacturer Name : ST Engineering Hackney, Inc Submission Date : MAY 24, 2023 NHTSA Recall No. : 23V-363 Manufacturer Recall No. : NR Manufacturer Information : Manufacturer Name : ST Engineering Hackney, Inc Address : 911 West 5th Street PO Box 880 Washington NC 27889 Company phone : 252-946-6521 Population : Number of potentially involved : 120 Estimated percentage with defect : 70 % Vehicle Information : Vehicle 1 : 2022-2023 KIDRON REFRIGERATED TRAILER Vehicle Type : TRAILERS Body Style : ALL Power Train : NR Descriptive Information : The suspension pivot bolt may not have been properly torqued during the alignment process on Hendrickson trailers with Quick-Align systems manufactured in our Montgomery, PA facility. Specific risk period is between November 18, 2022 and March 24, 2023. In an abundance of caution all units completed with Hendrickson suspensions with Quick- Align from 1/1/22 forward are included. Production Dates : JAN 01, 2022 – MAR 31, 2023 VIN Range 1 : Begin : NR End : NR Not sequential Description of Defect : Description of the Defect : The suspension pivot bolt may not have been properly torqued during the alignment process on Hendrickson trailers with Quick-Align systems manufactured in our Montgomery, PA. The pivot bolt head will snap off when properly torqued. FMVSS 1 : NR FMVSS 2 : NR Description of the Safety Risk : In certain circumstances failure of the pivot bolts may cause the suspension and the attached axle to separate form the trailer increasing the risk of a crash. Description of the Cause : The operator conducting final alignment had not been properly trained on the Hendrickson Quik-Align suspension. Identification of Any Warning Excessive tire wear and road noise could indicate the suspension alignment bolts have not been properly torqued. Also – the pivot bolt nut can be visually Part 573 Safety Recall Report 23V-363 Page 2 The information contained in this report was submitted pursuant to 49 CFR §573 that can Occur : inspected – the nut will be removed if it has been completely torqued. Involved Components : Component Name 1 : Not Applicable Component Description : NR Component Part Number : NR Supplier Identification : Component Manufacturer Name : Not applicable Address : NR NR Country : NR Chronology : Chronology March 22, 2023 communication from Sysco to Kidron warranty regarding issue with loose alignment and adjuster bolt. (Unit #253724) Internal investigation determined current operator had not been trained properly on alignment process for Hendrickson Quik-Align system. Records showed this operator had completed units since January 2023. March 27, 2023 Service Bulletin 230327 issued with 24 potential units identified for one specific customer effected. April 26, 2023 Sysco reported another unit with identical issue outside of the service bulletin scope. Expanded investigation to previous operator(s) who had conducted suspension alignment on the Hendrickson Quik-Align system. Records show that operators that had installed Hendrickson Quik-Align beginning November 18, 2022 had not been properly trained. April 27, 2023 scope was expanded to all 2023 model year units for Sysco. The investigation was submitted for engineering review. May 18, 2023 determination was made that a recall of Hendrickson Quik-Align suspensions was warranted to determine that the pivot bolt had been properly torqued. In abundance of caution, all units completed since 1/1/22 were included. May 23, 2023 determination of potential units effected by the recall. Part 573 Safety Recall Report 23V-363 Page 3 The information contained in this report was submitted pursuant to 49 CFR §573 Description of Remedy : Description of Remedy Program : STE Hackney has defined the units built with Hendrickson Quick-ALign system between 1/1/22 and 3/31/23 A recall notice will be sent to all effected customers and leasors with instructions defining how to inspect for and remedy the defect. STE Hackney warranty will compensate customers for 1.0 hour of inspection and alignment verification time. Additional labor and material will be compensated per the existing warranty policy. STE Hackney QA and warranty will monitor recall response rates and initiate follow up communications as required. How Remedy Component Differs from Recalled Component : The pivot bolt adjustment bolt should be snapped off when proper torque is achieved. Visual inspection will indicate that the bolt head is missing and the bolt has been properly torqued. Identify How/When Recall Condition was Corrected in Production : March 2023 Internal campaign conducted for all units in process. March 24, 2023 training conducted for all operators. Verification process was added requiring pictures of the completed installation confirming that the pivot adjustment bolt has been correctly snapped off. Recall Schedule : Description of Recall Schedule : STE Hackney warranty will begin the notification process within two working days after receipt of the recall approval and number from NHTSA Planned Dealer Notification Date : MAY 25, 2023 – JUN 01, 2023 Planned Owner Notification Date : MAY 25, 2023 – JUN 01, 2023 * NR – Not Reported

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STE Hackney 911 W. Fifth Street P.O. Box 880 Washington, North Carolina 27889, USA Phone: 252.9+46.6521 Fax: 252.9758340 www.kidron.com IMPORTANT SAFETY NOTICE SAFETY RECALL 23V363 Dear STE Hackney customer, This notice is sent to you in accordance with the requirements of the National Traffic and Motor Safety Act. STE Hackney, Inc. has identified that a defect which relates to motor vehicle safety exists in certain 2021, 2022 and 2023 Kidron Refrigerated Trailers, manufactured at our Montgomery, Pennsylvania facility from January 2022 to March 2023 and equipped with Hendrickson Trailer suspension with Quik-Align systems. Reason for this recall: STE Hackney is recalling certain refrigerated trailers equipped with Hendrickson Intraax and Vantraax suspensions with Quik-Align™ system; single axle fixed, tandem axle fixed, and sliding tandem axle; all air ride suspensions. The pivot bolt may not have been properly torqued during the alignment process. Risk to motor vehicle safety: Failure of the pivot bolts may cause the suspension and attached axle to separate from the trailer, increasing the risk of a crash. Actions you should take: Inspect if the adjuster bolt was properly torqued; The following illustration shows a bolt that has been properly torqued. If your bolt looks like this there is no action required, Please return the post card with the no action needed and send it back to Kidron. Upon receipt of the post card Kidron will reimburse up to 1.0 hour labor for the inspection. STE Hackney 911 W. Fifth Street P.O. Box 880 Washington, North Carolina 27889, USA Phone: 252.9+46.6521 Fax: 252.9758340 www.kidron.com The following illustration show a bolt that was improperly torqued. If this condition exists, immediately contact Mihai Serban of STE Hackney to receive corrective action instructions at 330-857-6810 and/or [email protected] STE Hackney will reimburse up to the estimated to take 1.0 hour that will take to complete the corrective action. If pivot bolts are missing replacement bolts will be shipped at no cost to you. If you do not own this vehicle: Our records indicate you are the owner of the vehicle identified on the enclosed card. If you do not own this vehicle, please fill out the Authorization for Recall Service card so you will not be contacted again regarding this recall. If you need assistance: If you believe that STE Hackney has failed to perform this repair within a reasonable amount of time, or the existing condition was not remedied without charge, please contact STE Hackney 800-763-0700. You may also wish to submit a complaint to: Administrator National Highway Traffic Safety Administration, 1200 New Jersey Ave. S.E. Washington, D.C., 20590 Or call the toll-free Vehicle Safety Hot-Line at 1-888-327-4236 (TTY:1-800-424-9152) or go to www.safercar.gov Lessor Requirements: Federal regulations require that any vehicle lessor receiving this Recall notice must forward a copy of this notice to the lessee within ten days. STE Hackney 911 W. Fifth Street P.O. Box 880 Washington, North Carolina 27889, USA Phone: 252.9+46.6521 Fax: 252.9758340 www.kidron.com Reimbursement Eligibility: If you have previously paid for repairs as a result of this issue, you may be entitled to recovery of those expenses. Contact Kidron for details. We request your prompt attention to the correction of this issue and apologize for any inconvenience this may cause you. Sincerely, Rosa Hernandez Director of Quality Assurance STE Hackney.

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OMB Control No.: 2127-0004 Part 573 Safety Recall Report 23V-363 The information contained in this report was submitted pursuant to 49 CFR §573 Manufacturer Name : ST Engineering Hackney, Inc Submission Date : JUN 01, 2023 NHTSA Recall No. : 23V-363 Manufacturer Recall No. : NR Manufacturer Information : Manufacturer Name : ST Engineering Hackney, Inc Address : 911 West 5th Street PO Box 880 Washington NC 27889 Company phone : 252-946-6521 Population : Number of potentially involved : 120 Estimated percentage with defect : 70 % Vehicle Information : Vehicle 1 : 2021-2023 KIDRON REFRIGERATED TRAILER Vehicle Type : TRAILERS Body Style : ALL Power Train : NR Descriptive Information : The suspension pivot bolt may not have been properly torqued during the alignment process on Hendrickson trailers with Quick-Align systems manufactured in our Montgomery, PA facility. Specific risk period is between November 18, 2022 and March 24, 2023. In an abundance of caution all units completed with Hendrickson suspensions with Quick- Align from 1/1/22 forward are included. Production Dates : JAN 01, 2022 – MAR 31, 2023 VIN Range 1 : Begin : NR End : NR Not sequential Part 573 Safety Recall Report 23V-363 Page 2 The information contained in this report was submitted pursuant to 49 CFR §573 Vehicle 2 : 2021-2023 KIDRON REFRIGERATED TRAILER Vehicle Type : TRAILERS Body Style : ALL Power Train : NR Descriptive Information : The suspension pivot bolt may not have been properly torqued during the alignment process on Hendrickson trailers with QUick-Align systems manufactured in our Montgomery, PA facility. Recall products include those trailers with Quick-Align systems that require the pivot bolt head to be broken off to confirm correct torque level is reached. Records indicate that operators installing Hendrickson suspensions beginning November 18, 2022 had not been properly trained. In an abundance of caution the recall population includes all trailers completed beginning January 1, 2022 Production Dates : JAN 01, 2022 – MAR 31, 2023 VIN Range 1 : Begin : NR End : NR Not sequential Description of Defect : Description of the Defect : The suspension pivot bolt may not have been properly torqued during the alignment process on Hendrickson trailers with Quick-Align systems manufactured in our Montgomery, PA. The pivot bolt head will snap off when properly torqued. FMVSS 1 : NR FMVSS 2 : NR Description of the Safety Risk : In certain circumstances failure of the pivot bolts may cause the suspension and the attached axle to separate form the trailer increasing the risk of a crash. Description of the Cause : The operator conducting final alignment had not been properly trained on the Hendrickson Quik-Align suspension. Identification of Any Warning that can Occur : Excessive tire wear and road noise could indicate the suspension alignment bolts have not been properly torqued. Also – the pivot bolt nut can be visually inspected – the nut will be removed if it has been completely torqued. Involved Components : Part 573 Safety Recall Report 23V-363 Page 3 The information contained in this report was submitted pursuant to 49 CFR §573 Component Name 1 : VANTRAAX.33558 Component Description : HKARL46K 9 10RHL77HPST QDX7SHD Component Part Number : K953097-1-GV Component Name 2 : VANTRAAX.22481 Component Description : HKARL46K 9 11RHL77HNST QDX7SHD Component Part Number : K950585 Component Name 3 : VANTRAAX.33816 Component Description : HKARL46K 9 11RHL77HNST QD430MM Component Part Number : K955036 Component Name 4 : INTSUSP.21274 Component Description : AAT23K 14RH L77NST X7SHD Component Part Number : K952866 Component Name 5 : INTSUSP.32327 Component Description : AAT23K 14RH L77NST 430MMH Component Part Number : K955071 Component Name 6 : VANTRAAX.34216 Component Description : HKANT46K 9 16RHL71HNST QDMAX41 Component Part Number : K955079 Component Name 7 : VANTRAAX.32705 Component Description : HKANT40KH9 16RHL77HNST QDX7SHD Component Part Number : K952475-1 Part 573 Safety Recall Report 23V-363 Page 4 The information contained in this report was submitted pursuant to 49 CFR §573 Component Name 8 : INTSUSP.32880 Component Description : AAT23K 14RH L77NST X7 SHD Component Part Number : K955245 Component Name 9 : VANTRAAX.34207 Component Description : HKANT40KH9 16RHL77HNST QDX7SHD Component Part Number : K955238 Component Name 10 : VANTRAAX.34349 Component Description : HKARL46K 9 11RHL77HNST QDX7SHD Component Part Number : K955305 Component Name 11 : INTSUSP.31329 Component Description : AAT23K 14RH L71NST X7 SHD Component Part Number : K954861 Component Name 12 : INTSUSP.34037 Component Description : AAT23K 14RH L77NST 430MMH Component Part Number : K955578 Component Name 13 : VANTRAAX.28653 Component Description : HKARL46K 9 11RHL77HNST QDX7SHD Component Part Number : K953282 Component Name 14 : VANTRAAX.34900 Component Description : HKARL46K 9 11RHL77HNST QD430MM Component Part Number : K955580 Part 573 Safety Recall Report 23V-363 Page 5 The information contained in this report was submitted pursuant to 49 CFR §573 Component Name 15 : INTSUSP.34312 Component Description : AAT23K 14RH L77NST 430MMH Component Part Number : K955722 Component Name 16 : INTSUSP.34590 Component Description : AAT23K 14RH L77NST X7SHD Component Part Number : K955776 Supplier Identification : Component Manufacturer Name : Hendrickson Vehicle Systems Address : 2070 Industrial Place SE Canton Ohio 44707 Country : United States Chronology : Chronology March 22, 2023 communication from Sysco to Kidron warranty regarding issue with loose alignment and adjuster bolt. (Unit #253724) Internal investigation determined current operator had not been trained properly on alignment process for Hendrickson Quik-Align system. Records showed this operator had completed units since January 2023. March 27, 2023 Service Bulletin 230327 issued with 24 potential units identified for one specific customer effected. April 26, 2023 Sysco reported another unit with identical issue outside of the service bulletin scope. Expanded investigation to previous operator(s) who had conducted suspension alignment on the Hendrickson Quik-Align system. Records show that operators that had installed Hendrickson Quik-Align beginning November 18, 2022 had not been properly trained. April 27, 2023 scope was expanded to all 2023 model year units for Sysco. The investigation was submitted for engineering review. May 18, 2023 determination was made that a recall of Hendrickson Quik-Align suspensions was warranted to determine that the pivot bolt had been properly torqued. In abundance of caution, all units completed since 1/1/22 were included. May 23, 2023 determination of potential units effected by the recall. Part 573 Safety Recall Report 23V-363 Page 6 The information contained in this report was submitted pursuant to 49 CFR §573 Description of Remedy : Description of Remedy Program : STE Hackney has defined the units built with Hendrickson Quick-ALign system between 1/1/22 and 3/31/23 A recall notice will be sent to all effected customers and leasors with instructions defining how to inspect for and remedy the defect. STE Hackney warranty will compensate customers for 1.0 hour of inspection and alignment verification time. Additional labor and material will be compensated per the existing warranty policy. STE Hackney QA and warranty will monitor recall response rates and initiate follow up communications as required. How Remedy Component Differs from Recalled Component : The pivot bolt adjustment bolt should be snapped off when proper torque is achieved. Visual inspection will indicate that the bolt head is missing and the bolt has been properly torqued. Identify How/When Recall Condition was Corrected in Production : March 2023 Internal campaign conducted for all units in process. March 24, 2023 training conducted for all operators. Verification process was added requiring pictures of the completed installation confirming that the pivot adjustment bolt has been correctly snapped off. Recall Schedule : Description of Recall Schedule : STE Hackney warranty will begin the notification process within two working days after receipt of the recall approval and number from NHTSA Planned Dealer Notification Date : JUN 02, 2023 – JUN 07, 2023 Planned Owner Notification Date : JUN 02, 2023 – JUN 07, 2023 * NR – Not Reported

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