SN723 – Aerial Device Mounting Bolts Improperly Tightened – 2021-2023 Terex TL48 Trucks

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Terex South Dakota, Inc. 3140 15th Ave SE Watertown, SD 57201 USA 1-844-837-3948 • Fax 1-605-882-1842 Terex Utilities SAFETY NOTICE SN723 DATE: 10/12/2023 REVISED: TO: Owners, Users, Dealers, and Installers MODELS AFFECTED: TL48 Aerial Devices SUBJECT: Pedestal Mounting Bolts Issue: Terex model TL48 aerial devices, produced from October 2021 through May 2023, may have pedestal to sub-base mounting bolts that will loosen. The loosening of the mounting bolts may cause the bolts to fail. Failure of the mounting bolts could cause the boom to fall which could result in injury or death. Action: What the Owner Must Do: The owner must inspect their equipment and correct if required: 1. Immediately inform all users, operators, and supervisors that the pedestal to sub-base mounting bolts must be inspected before further use. Cover plates at the base of the pedestal may need to be removed to inspect the bolts, refer to Figure 1. 2. Inspect the head markings of the bolts to determine if they are grade 5 or grade 8 using Figures 2 and 3 below. Figure 1. Area of unit to inspect pedestal to sub-base mounting bolts Cover plates installed Cover plates removed 2 3. Inspect to determine if the pedestal to sub-base mounting bolts are loose. a. The inspection involves a torque check on all pedestal to sub-base mounting bolts using a calibrated torque wrench. b. Any loose pedestal to sub-base mounting bolts are to be retorqued using a calibrated torque wrench. Grade 5 bolts are to be retorqued to 300 ft-lbs and grade 8 bolts to 460 ft-lbs. c. After retorqueing all pedestal to sub-base mounting bolts, apply torque striping across the bolt head and washer to the bolting plate to aid in further visual inspections. d. Store the pedestal base cover plates and mounting hardware in a secure location, such as a body compartment, until Field Service Kit Z1702 is installed. Inform users and operators that the opening in the body floor around the pedestal may be a trip hazard until the cover plates can be reinstalled. 4. After retorqueing all pedestal to sub-base mounting bolts, the unit can be used following the instructions in the continued use section below as well as all operator, maintenance, and inspection requirements as specified in the manuals. Continued Use: Inform the users of the content of this bulletin and remind them of the daily pre-shift inspection requirements. 1. Inspect the pedestal to sub-base mounting bolt torque strip weekly until Field Service Kit Z1702 is installed. a. If the torque stripe is intact and/or the washers do not move on all pedestal to sub-base mounting bolts, machine use can continue until Field Service Kit Z1702 is installed, following all operator, maintenance, and inspection requirements as specified in the manuals and this bulletin. b. If the torque stripe is broken or the washer is loose on any of the pedestal to sub-base mounting bolts, retorque a grade 5 bolt to 300 ft-lbs and retorque a grade 8 bolt to 460 ft-lbs with a calibrated torque wrench. After retorqueing any required bolts, machine use can continue following the weekly visual inspection and retorquing requirements as needed until Field Service Kit Z1702 is installed. 2. Every 30 days after the initial torque check (Step 3 of the Action), perform a torque check on all rotation bearing bolts following the same procedure as in Step 3 of the Action. 3. Continue with the weekly visual inspection of the rotation bearing bolts and 30-day torque checks until Field Service Kit Z1702 is installed. 4. Within 10 days of receiving this bulletin contact Terex Utilities; through your nearest TEREX Utilities dealer as shown on the web site, terexutilities.com, call Terex Utilities Warranty Department at 1-844-837-3948 or by email at utilities.warranty@terex.com to arrange for repair. Figure 3. Typical Grade 8 bolt head marking Figure 4. Broken torque striping Figure 2. Typical Grade 5 bolt head marking 3 5. Always follow all operator, inspection, and maintenance requirements as specified in the manuals. What Terex will Do: Terex will provide Field Service Kit Z1702, parts and labor, at no cost to the customer. The Field Service Kit Z1702 provides replacement pedestal to sub-base mounting bolts and washers. Locate your nearest Terex Utilities Service Center by visiting our website at www.terexutilities.com and select the Service tab. To schedule repairs with Terex Utilities Field Service, call 1-844-837-3948. The Terex Utilities Warranty Department can also be reached at 1-844-837-3948 or by email at utilities.warranty@terex.com. Repairs can also be coordinated through our Dealer Service network as noted on the map included with this mailing. If you have sold the unit involved in this bulletin forward this bulletin to the new owner within 10 days and notify Terex of the serial number and contact information for the new owner. Dealers and Installers: A letter is being sent to owners of affected units. If affected units are in your area the customer may contact you to arrange the repairs. Inform owner it will take approximately one (1) hour to complete the repair. Only TL48 aerial device models produced from October 2021 to May 2023 are involved. Machines repaired in bulletin SN719 are not included. If the owner contacts you call Terex Utilities Warranty Department at 1-844-837-3948 for instructions and to arrange shipment of parts. Affected units, as shown on the owner letter, will have the repairs performed at no charge to the owner. Important: Some of the involved units may be in rental fleets. Federal Law requires you to complete the recall service on these units before renting, or to inform the renters within 10 days of receipt of this bulletin. Note to Owners: If the manufacturer or their dealer has failed or is unable to remedy the defect/noncompliance condition without charge or within a reasonable amount of time you can notify: Administrator National Highway Traffic Safety Administration 1200 New Jersey Avenue, SE, West Building Washington, DC 20590 Or call the toll-free DOT auto Safety Hotline at 1-888-327-4236 (TTY: 1-800-424-9153; or go to http://www.safercar.gov .) Terex and local industry standards (CSA and ANSI) require the purchaser of a Terex unit report to Terex the model and serial number of each machine sold, as well as the name, address, and telephone number of the new owner, within 60 days of the sale. Use the Owner Update Form in the manual to update the owner status of any of your machines. Terex also asks the seller to provide the new owner information so if you require additional copies of the Owner Update Form or have any questions, please contact Terex Utilities Warranty Department at 1-844-837-3948 or utilities.warranty@terex.com. Terex, OSHA and local industry standards, also require that the manufacturer’s bulletins be completed. It is your responsibility to communicate this important information to all machine owners and applicable branches. If you require additional copies of this bulletin or have any questions, please contact Terex Utilities at 1-844-837-3948. To register your Terex Utilities aerial device or digger derrick, click or navigate to the following link: https://www.terex.com/utilities/en/support/product-registration

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OMB Control No.: 2127-0004 Part 573 Safety Recall Report 23V-703 The information contained in this report was submitted pursuant to 49 CFR §573 Manufacturer Name : Terex South Dakota, Inc. Submission Date : OCT 19, 2023 NHTSA Recall No. : 23V-703 Manufacturer Recall No. : SN723 Manufacturer Information : Manufacturer Name : Terex South Dakota, Inc. Address : 3140 15th Ave SE PO Box 1050 Watertown SD 57201 Company phone : 18448373948 Population : Number of potentially involved : 17 Estimated percentage with defect : 100 % Vehicle Information : Vehicle 1 : 2021-2023 Terex TL48 Vehicle Type : LOW VOLUME VEHICLES Body Style : Power Train : NR Descriptive Information : The population includes all TL48 machines produced from October 22, 2021 to May 19, 2023 and then installed by Terex South Dakota, Inc from November 9, 2021 to June 5, 2023. Production Dates : OCT 22, 2021 – MAY 19, 2023 VIN Range 1 : Begin : NR End : NR Not sequential Description of Defect : Description of the Defect : There are 8 bolts used to mount the aerial device to the sub-base. The incorrect grade of bolts and incorrect torque may have been used at the time of installation of the bolts which could result in the bolts loosening during unit use and failing. FMVSS 1 : NR FMVSS 2 : NR Description of the Safety Risk : If the mounting bolts fail the aerial device could fall which could result in injury or death. Description of the Cause : The bolts used may have been the incorrect grade and may have been torqued to the incorrect value. Identification of Any Warning that can Occur : Daily visual inspection may indicate loose bolts. There may be loud popping sounds and excessive movement of the pedestal and turntable if the bolts are loose. Involved Components : Part 573 Safety Recall Report 23V-703 Page 2 The information contained in this report was submitted pursuant to 49 CFR §573 Component Name 1 : Mounting Bolt Component Description : Mounting bolt for pedestal to sub-base Component Part Number : 627083 Supplier Identification : Component Manufacturer Name : Terex South Dakota, Inc Address : 3140 15th Ave SE Watertown South Dakota 57201 Country : United States Chronology : On June 20, 2023, the Terex South Dakota, Inc production team discovered that the wrong bolts and wrong torque may have been used on previously installed machines for attaching the pedestal to sub-base. All in process machines were checked and verified to have the correct bolts and torque. An engineering analysis was completed on August 29, 2023 that determined the lower bolt torque was inadequate. Development of the field fix began at that time. Even though there are no reports of issues, a decision to recall was made on October 12, 2023. Description of Remedy : Description of Remedy Program : The bolts and washers connecting the pedestal to the sub-base will be replaced at no cost to the customer. Terex will reimburse up to one hour to have the correct hardware installed and torqued. How Remedy Component Differs from Recalled Component : The head marking of the pedestal to sub-base bolts are visibly different between the recalled grade 5 bolts and the grade 8 bolts in the remedy. Recalled machines built with grade 8 bolts will not be visibly distinguishable from remedied machines. Identify How/When Recall Condition was Corrected in Production : On August 2, 2023, the first machine was installed by Terex South Dakota, Inc after the issue was detected on June 20, 2023. The pedestal to subbase mounting hardware was provided to the production installation team in a kit with other mounting components and the production installation team was trained that the hardware was in the kit and where to find the specified torque value for the mounting hardware. Part 573 Safety Recall Report 23V-703 Page 3 The information contained in this report was submitted pursuant to 49 CFR §573 Recall Schedule : Description of Recall Schedule : Dealer notification will begin by October 27, 2023. Owner notification will begin by November 17, 2023. Planned Dealer Notification Date : OCT 27, 2023 – NR Planned Owner Notification Date : NOV 17, 2023 – NR * NR – Not Reported

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