Steering Arm May Fracture – 2020 Brenner Tank TKLQXDC

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TECHNICAL SAFETY BULLETIN Wabash, P.O. Box 6129, Lafayette, IN 47903 920-322-1041 TBIMT1001 Steer Arm Replacement Page 1 of 4 Subject: Smart-Steer 2.0 Axle with 702887 Steer Arm Date: 4/1/2023 Rev.:A No.: TSBIMT1001 Re.: 702887 Steer Arm Potential Failure Priority: As Needed Units Affected: Wabash trailers with Dexter 702887 Steer arm configuration on Smart-Steer 2.0 self-steer axles Background: Under certain repeated heavy loading conditions, the steer arm has the potential to fail. The following procedure outlines how to remedy this situation by replacing the steering arm with an up-dated version from the manufacture. Tools Required: QTY Floor Jack 1 Jack Stands 2 Welder 1 Socket Set 1 Die Grinder 1 Materials Required: Description Part Number QTY Replacement Steer Arm Kit 703294-01 1 CAUTION! • Wear appropriate personal protective equipment [PPE] like gloves, safety glasses and hard hat for example, when carrying out the following procedure. • Should welding or cutting be needed, do so in a well-ventilated area and wear appropriate head/face/eye protection, welding gloves and clothing. • Refer to adhesive and chemical manufacturer’s MSDS for safe use and handling instructions if applicable. • Follow your company’s safety procedures in addition to these recommendations. • Follow industry standards for installation and tightening of all fasteners where torque values are not called out Wabash P.O. Box 6129, Lafayette, IN 47903 765-771-5404 TBIMT1001 Steer Arm Replacement Page 2 of 4 Repair Procedure: 1. Remove the existing steer arms and mounting hardware. 2. Clean mounting surface and surrounding surfaces to prepare for mounting of the new bolt-on steer arm and additional welds. 3. Grind a 3/16” chamfer along the mounting face edge. 4. Mount new steer arms (Part#703294-01) with supplied hardware. a. Torque to 400 ft. lbs. Wabash P.O. Box 6129, Lafayette, IN 47903 765-771-5404 TBIMT1001 Steer Arm Replacement Page 3 of 4 5. Add welds to steer arms as shown. Wabash P.O. Box 6129, Lafayette, IN 47903 765-771-5404 TBIMT1001 Steer Arm Replacement Page 4 of 4 • Should you have questions or concerns about this repair please contact Rick Kostro @ 920-322-1041, or John Gabriel @ 765-771-5428 • The SRT for this Recall repair is 6 hours per unit affected. • Be cautious of all sharp edges in the surrounding work area and always follow your company’s safety procedures and safe work practices while performing these repairs.

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IMPORTANT SAFETY RECALL This notice applies to your vehicle, . NHTSA Recall No. 22V-821 1/23/2023 Dear This notice is sent to you in accordance with the National Traffic and Motor Vehicle Safety Act. Brenner Tank has decided that a defect, which relates to motor vehicle safety, exists in certain 2020-2021 model year Brenner Tank vehicles. Description of Defect The steer arm on the IMT lift axle has potential to fail. Risk to Motor Vehicle Safety: The fractured steer arm and tie rod can separate and fall to the ground, increasing the risk of crash or injury. Precautions You Should Take: Make immediate arrangements with a Dexter authorized service facility to replace the steer arms. Remedy: Enclosed with this notification is Safety Bulletin “#SB015”. The equipment listed within, should be inspected, and remedied per the instructions described in bulletin #SB015. This repair should take approximately 6 hours and will be performed at no cost to the owner. The owner may perform this recall and be reimbursed by Dexter Trailer Products of Canada Corporation. Contact Dexter Heavy Duty Field Service Technicians Rudy Wosing or Phil Schnurr at 226-242-5291. Further Assistance: If you have questions or concerns about this recall, please contact Brenner Tank Warranty Department at 920-322-1041, Monday-Friday, 7:00am-5:00pm, CT. If Dexter Trailer Products of Canada Corporation fails or is unable to remedy this defect without charge, or within a reasonable amount of time, you may submit a written complaint to: Administrator National Highway Traffic Safety Administration 1200 New Jersey AVE SE Washington, DC 20590 You may also call the toll-free Vehicle Safety Hotline at 1-888-327-4236 (TTY: 1-800-424- 9153); or go to http://www.safercar.gov. If you are the lessor of this vehicle, please forward a copy of this notice to the lessee within 10 days to comply with federal regulations. . If this repair has been performed at cost to the owner prior to receipt of this notification, the owner may be eligible to receive reimbursement for the cost of obtaining a pre-notification remedy of the problem associated with this recall. For more information, contact the Brenner Tank Warranty Department at 920-322-1041, Monday – Friday, 7:00am – 5:00pm, CT. If you no longer own the vehicle, contact the Brenner Tank Warranty Department at 920-322- 1041, Monday – Friday, 7:00am – 5:00pm, CT. We apologize for any inconvenience and thank you for your attention to this safety matter. Sincerely, Rick Kostro Warranty Manager Wabash 450 Arlington Ave. Fond du Lac, WI 54935

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April 18, 2023 IMPORTANT SAFETY RECALL NHTSA Recall# 22V-821 This notice applies to your vehicles with the following VIN’s Dear Wabash Customer, This notice is being sent to you in accordance with the National Traffic and Motor Vehicle Safety Act. Wabash has decided that a defect, which relates to motor vehicle safety, exists in certain 2020-2021 model year Brenner Tank LLC vehicles equipped with Dexter #702887 steer arm configuration on the Smart Steer 2.0 self-steer axle. Description of Defect: The steer arm on the Dexter Smart Steer 2.0 self-steer axle lift axle has the potential to fracture. Risk to Motor Vehicle Safety: The fractured steer arm and tie rod can separate and fall to the ground, increasing the risk of crash or injury. Precautions You Should Take: The condition of the steer arm typically will not be apparent during routine inspections. A visual inspection is needed to see if the steer arm is fractured. We feel that this inspection should take place as soon as practical, but not to exceed your normal PM cycle. Remedy: Enclosed with this notification is Wabash Technical Bulletin TSBIMT1001. The equipment listed within should be inspected and remedied per the instructions described in TSBIMT1001 as soon as practical. This repair should take approximately 6 hours and will be performed at no cost to the owner. The owner may perform this recall and be reimbursed by Wabash, or you may contact your nearest Wabash Warranty Provider for assistance. If you need assistance locating your nearest Wabash Warranty Provider, you may search the link https://onewabash.com/location-search/locations or contact the Wabash Warranty Department at 920-322-1041, Monday – Friday, 7:00am – 4:00pm, CT. for personal assistance. If Already Remedied: If this repair has been performed at cost to the owner prior to receipt of this notification, the owner may be eligible to receive reimbursement for the cost of obtaining a prenotification remedy of the problem associated with this recall. For more information, contact the Wabash Warranty Department at 920-322-1041, Monday – Friday, 7:00am – 4:00pm, CT. For Further Assistance: If you have additional questions regarding this recall, please contact the Wabash Warranty Department at 920-322-1041, Monday – Friday, 7:00am – 4:00pm, CT. If after contacting Wabash, you are not satisfied we have done our best to remedy this safety recall without charge and within a reasonable time, you may wish to write to the Administrator, National Highway Traffic Safety Administration, 1200 New Jersey Ave., S.E., Washington, D.C. 20590 or call the toll-free vehicle safety hotline at 1-888-327- 4236 (TTY: 1-800-424-9153); or go to http://www.safercar.gov. If you are the lessor of this vehicle, please forward a copy of this notice to the lessee within 10 days to comply with federal regulations. If you are no longer own the vehicle: Wabash would appreciate knowing the name and address of the new owner, if known by you. You can provide such information via email to [email protected] We apologize for any inconvenience caused by this safety recall. Thank you, Mike Jones Corp. Warranty Manager Wabash National 1000 Sagamore Parkway S Lafayette, IN 47905 Attachments: 1. Recall Remedy Instructions

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OMB Control No.: 2127-0004 Part 573 Safety Recall Report 22V-821 The information contained in this report was submitted pursuant to 49 CFR §573 Manufacturer Name : Brenner Tank, LLC Submission Date : NOV 02, 2022 NHTSA Recall No. : 22V-821 Manufacturer Recall No. : NR Manufacturer Information : Manufacturer Name : Brenner Tank, LLC Address : 450 Arlington Avenue P.O. Box 670 Fond du Lac WI 54936 Company phone : 800-558-8265 Population : Number of potentially involved : 3 Estimated percentage with defect : 100 % Vehicle Information : Vehicle 1 : 2020-2020 Brenner Tank, LLC TKLQXDC Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : OTHER Power Train : NR Descriptive Information : Population determined by Part 573 Safety Recall Report # 22E-080 from Dexter Axle Company. There are three units affected due to having this axle. No other trailers we manufacture have this affected axle. Production Dates : APR 02, 2020 – MAY 19, 2020 VIN Range 1 : Begin : 10BAAB339LF224923 End : 10BAAB339LF224923 ✔ Not sequential VIN Range 2 : Begin : 10BAAB333MF225079 End : 10BAAB333MF225079 ✔ Not sequential VIN Range 3 : Begin : 10BAAB339MF229458 End : 10BAAB339MF229458 ✔ Not sequential Description of Defect : Description of the Defect : Under low speed, high lateral loading events, the steer arm may fracture FMVSS 1 : NR FMVSS 2 : NR Description of the Safety Risk : the fractured steer arm and attached tie rod will fall to the ground causing a risk for separation. There is no loss of control of the unit when this failure occurs. Description of the Cause : The material strength was not sufficient to withstand the high lateral loads. Identification of Any Warning that can Occur : Independant castering of steer axle wheels and noise from dragging parts. Involved Components : Part 573 Safety Recall Report 22V-821 Page 2 The information contained in this report was submitted pursuant to 49 CFR §573 Component Name 1 : Bolt-on Steer Arm Component Description : bolt-on steer arm that connects the knuckle assembly to the tie rod Component Part Number : 702887-xx Supplier Identification : Component Manufacturer Name : Dexter Axle Company Address : 2900 Industrial Parkway East PO Box 250 Elkhart Indiana 46516 Country : United States Chronology : After reviewing recent claims with a key customer, a service bulletin was requested to address the customer issues. Upon further investigations and reviews, Dexter Canada conducted an analysis of the failure mode and determined the material was not robust enough to withstand the higher loading events which may occur in this configuration. Re-design activities were initiated to define a steer arm design that will withstand the unique, higher load events based on collected toad load data. Description of Remedy : Description of Remedy Program : Service work will include the following steps (per SB015): 1. Remove the existing steer arms and mounting hardware. 2. Clean mounting surface and surrounding surfaces to prepare for mounting of the new bolt-on steer arm and additional welds. 3. Grind a 3/16″ chamfer along the mounting face edge (see page three for location & detail). 4. Mount new design steer arms (Part # 703293-LH/RH) with supplied hardware and torque to 400 ft-lbs. 5. Add welds as shown on page three of this bulletin. How Remedy Component Differs from Recalled Component : New design has a higher strength material and is welded to the steer knuckle. Identify How/When Recall Condition was Corrected in Production : Implemented a new design with higher strength material as well as an additional weld connecting the arm to the knuckle into production at Dexter Canada on 30-October-2022. Part 573 Safety Recall Report 22V-821 Page 3 The information contained in this report was submitted pursuant to 49 CFR §573 Recall Schedule : Description of Recall Schedule : There is one dealer that originally purchased these three trailers. That dealer will be notified the week of December 5, 2022. That dealer sold the three trailers to one customer. That customer will be notified the week of December 12, 2022. Planned Dealer Notification Date : DEC 05, 2022 – DEC 09, 2022 Planned Owner Notification Date : DEC 12, 2022 – DEC 16, 2022 * NR – Not Reported

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OMB Control No.: 2127-0004 Part 573 Safety Recall Report 22V-821 The information contained in this report was submitted pursuant to 49 CFR §573 Manufacturer Name : Brenner Tank, LLC Submission Date : APR 18, 2023 NHTSA Recall No. : 22V-821 Manufacturer Recall No. : TSBIMT1001 Manufacturer Information : Manufacturer Name : Brenner Tank, LLC Address : 450 Arlington Avenue P.O. Box 670 Fond du Lac WI 54936 Company phone : 800-558-8265 Population : Number of potentially involved : 3 Estimated percentage with defect : 100 % Vehicle Information : Vehicle 1 : 2020-2020 Brenner Tank, LLC TKLQXDC Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : OTHER Power Train : NR Descriptive Information : Population determined by Part 573 Safety Recall Report # 22E-080 from Dexter Axle Company. There are three units affected due to having this axle. No other trailers we manufacture have this affected axle. Production Dates : APR 02, 2020 – MAY 19, 2020 VIN Range 1 : Begin : 10BAAB339LF224923 End : 10BAAB339MF229458 ✔ Not sequential Description of Defect : Description of the Defect : The steering arm may fracture during certain conditions, such as low speed and high side-loading. FMVSS 1 : NR FMVSS 2 : NR Description of the Safety Risk : The fractured steer arm and tie rod can separate and fall to the ground, increasing the risk of a crash. Brenner Tank has no knowledge of any incidents relating to this condition. Description of the Cause : The material strength was not sufficient to withstand the high lateral loads. Identification of Any Warning that can Occur : Independant castering of steer axle wheels and noise from dragging parts. Involved Components : Part 573 Safety Recall Report 22V-821 Page 2 The information contained in this report was submitted pursuant to 49 CFR §573 Component Name 1 : Bolt-on Steer Arm Component Description : bolt-on steer arm that connects the knuckle assembly to the tie rod Component Part Number : 702887-xx Supplier Identification : Component Manufacturer Name : Dexter Axle Company Address : 2900 Industrial Parkway East PO Box 250 Elkhart Indiana 46516 Country : United States Chronology : 10/26- Reviewed a recall notification letter received from Dexter Axle company, a supplier to Brenner Tank LLC., regarding a manufacturing flaw that could lead to a fracture of the steer arm. The letter gave our PO# of the axles affected in the recall. Started an investigation to determine our part number and identify what trailers have these steer arms installed that were manufactured at the Brenner facility in Wisconsin. 10/28- Held meeting with the Product Safety Team, which voted to escalate the matter to the Product Safety Committee. Scheduled Product Safety Committee meeting. 10/31- Determined that three trailers were manufactured with defective steer arms in the Brenner Tank facility in Wisconsin. These three tank trailers were manufactured and sold to one single customer. 11/1- Held Product Safety Committee meeting. Committee voted to proceed with a safety recall to remedy 5 defective steer arms, 3 installed in the Brenner Tank facility in Wisconsin and 2 installed in the Bulk Tank facility in Mexico and sold in the United States. (See 22V-822 for the 573 report for the 2 trailers manufactured by Bulk.) All 5 trailers were sold to one customer. 11/2- Submitted a 573 safety recall report to NHTSA for the three trailers manufactured by Brenner Tank LLC. (See 22V-822 for the 573 report for the 2 trailers manufactured by Bulk.) 11/4-Revised 573 per input from NHTSA RMD 3/29/2023 – It was brought to our attention that repair parts were not available from the supplier, Dexter Axle, at the time the owner was notified of this safety recall in January 2023. Accordingly, the first notification letter should have been an interim letter. Parts are now available, and a final owner notification letter will be issued by 05/01/2023 Part 573 Safety Recall Report 22V-821 Page 3 The information contained in this report was submitted pursuant to 49 CFR §573 Description of Remedy : Description of Remedy Program : New steering arms will be installed under warranty and at no cost to the customer. Customers will be reimbursed if they have incurred costs to obtain a remedy prior to receiving their notification for this condition. How Remedy Component Differs from Recalled Component : New design has a higher strength material and is welded to the steer knuckle. Identify How/When Recall Condition was Corrected in Production : Implemented a new design with higher strength material as well as an additional weld connecting the arm to the knuckle into production at Dexter Canada on 30-October-2022. Recall Schedule : Description of Recall Schedule : Final owner letter will be sent to the customer. This recall affects only one customer. With there being only one customer involved, we do not plan to issue a dealer notification for this recall. Planned Dealer Notification Date : NR – NR Planned Owner Notification Date : MAY 01, 2023 – MAY 01, 2023 * NR – Not Reported

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OMB Control No.: 2127-0004 Part 573 Safety Recall Report 22V-821 The information contained in this report was submitted pursuant to 49 CFR §573 Manufacturer Name : Brenner Tank, LLC Submission Date : NOV 04, 2022 NHTSA Recall No. : 22V-821 Manufacturer Recall No. : NR Manufacturer Information : Manufacturer Name : Brenner Tank, LLC Address : 450 Arlington Avenue P.O. Box 670 Fond du Lac WI 54936 Company phone : 800-558-8265 Population : Number of potentially involved : 3 Estimated percentage with defect : 100 % Vehicle Information : Vehicle 1 : 2020-2020 Brenner Tank, LLC TKLQXDC Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : OTHER Power Train : NR Descriptive Information : Population determined by Part 573 Safety Recall Report # 22E-080 from Dexter Axle Company. There are three units affected due to having this axle. No other trailers we manufacture have this affected axle. Production Dates : APR 02, 2020 – MAY 19, 2020 VIN Range 1 : Begin : 10BAAB339LF224923 End : 10BAAB339LF224923 ✔ Not sequential VIN Range 2 : Begin : 10BAAB333MF225079 End : 10BAAB333MF225079 ✔ Not sequential VIN Range 3 : Begin : 10BAAB339MF229458 End : 10BAAB339MF229458 ✔ Not sequential Description of Defect : Description of the Defect : The steering arm may fracture during certain conditions, such as low speed and high side-loading. FMVSS 1 : NR FMVSS 2 : NR Description of the Safety Risk : The fractured steer arm and tie rod can separate and fall to the ground, increasing the risk of a crash. Description of the Cause : The material strength was not sufficient to withstand the high lateral loads. Identification of Any Warning that can Occur : Independant castering of steer axle wheels and noise from dragging parts. Involved Components : Part 573 Safety Recall Report 22V-821 Page 2 The information contained in this report was submitted pursuant to 49 CFR §573 Component Name 1 : Bolt-on Steer Arm Component Description : bolt-on steer arm that connects the knuckle assembly to the tie rod Component Part Number : 702887-xx Supplier Identification : Component Manufacturer Name : Dexter Axle Company Address : 2900 Industrial Parkway East PO Box 250 Elkhart Indiana 46516 Country : United States Chronology : 10/26- Received notification letter in my mailbox 10/27-opened letter and reviewed. Letter gave our PO# of the three axles affected in the recall. Started the investigation to determine our part number. Scheduled emergency meeting with our Product Safety Team. 10/28- Held meeting with our Product Safety Team. Vote was to escalate and meet with Product Safety Committee. Scheduled emergency Product Safety Committee meeting. 10/31- Determined the three trailers, vin numbers and customer. I did reach out to Phil Schnurr who is the contact for Dexter in regard to the number of units affected. Our system shows we purchased five axles. Three were built at our Brenner facility and two were built at our Bulk facility. In talking with Phil, they did not send a letter to our Bulk facility as they didn’t think they needed to. All five trailers sold to the same customer. Phil said he would support repairs on all five units. 11/1- Held Product Safety Committe meeting. Vote was to proceed with recall process. I started the 573 documents. 11/2- Completed 573 and submitted. 11/4-Recevied e-mail from Sarah Shiver with necessary changes. Made changes to: chronology, describe the defect and noncompliance verbiage, describe the safety risk (consequence on PDF in e-mail), and resubmitted the 573. Part 573 Safety Recall Report 22V-821 Page 3 The information contained in this report was submitted pursuant to 49 CFR §573 Description of Remedy : Description of Remedy Program : Service work will include the following steps (per SB015): 1. Remove the existing steer arms and mounting hardware. 2. Clean mounting surface and surrounding surfaces to prepare for mounting of the new bolt-on steer arm and additional welds. 3. Grind a 3/16″ chamfer along the mounting face edge (see page three for location & detail). 4. Mount new design steer arms (Part # 703293-LH/RH) with supplied hardware and torque to 400 ft-lbs. 5. Add welds as shown on page three of bulletin supplied by Dexter Axle. How Remedy Component Differs from Recalled Component : New design has a higher strength material and is welded to the steer knuckle. Identify How/When Recall Condition was Corrected in Production : Implemented a new design with higher strength material as well as an additional weld connecting the arm to the knuckle into production at Dexter Canada on 30-October-2022. Recall Schedule : Description of Recall Schedule : There is one dealer that originally purchased these three trailers. That dealer will be notified the week of December 5, 2022. That dealer sold the three trailers to one customer. That customer will be notified the week of December 12, 2022. Planned Dealer Notification Date : DEC 05, 2022 – DEC 09, 2022 Planned Owner Notification Date : DEC 12, 2022 – DEC 16, 2022 * NR – Not Reported

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