CSN851 – Shear Plates May Fail – 2018-2021 Altec DC & DM Series Digger Derricks & AM Series Aerial Devices

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Customer Outreach PO Box 8338 product.safety@altec.com Phone 1-877-GO ALTEC Saint Joseph, MO 64508 connect.altec.com/login Facsimile 1-877-659-9929 IMPORTANT SAFETY RECALL This notice applies to your vehicle. Refer to the provided list. NHTSA Recall Number: Dear Altec Owner, This notice is sent to you in accordance with the National Traffic and Motor Vehicle Safety Act and Canada Motor Vehicle Safety Act. Altec Industries, Inc. has decided that a defect which relates to motor vehicle safety exists in certain DC45/47 and DM45/47B digger derricks and AM55E aerial devices built from May 2018 to January 2021. This is to inform you that your vehicle may contain a defect that could affect the safety of a person. The front bulkhead plate on the subbase on the affected units was manufactured from a material having a lower than specified yield strength. This could cause cracking of the bulkhead plate. Cracking of the bulkhead plate could lead to failure of the outrigger attachment, causing uncontrolled boom movement. Death or serious injury could result from uncontrolled boom movement. Refer to the included notice for the items covered under the Altec Warranty Policy. If you had this repair performed before you received this notice, you may be eligible to receive reimbursement for the cost of obtaining a pre-notification remedy of the problem associated with this recall. All work will be performed at no charge to the customer when presented for repair. Compare your unit’s identifying information with the provided list to verify your unit is affected. You may also contact Altec or view your fleet through Altec Connect to determine if there are any other outstanding notices. The inspection and repair can be performed by the customer, or you may contact Altec for further assistance. The inspection is estimated to take one person 30 minutes to complete. The repair is estimated to take one person four hours for reinforcement plate installation on all units, and an additional six hours for crack repair on units that require this. If you have sold or retired the unit, update the records through Altec Connect. If you have leased this equipment to another person or company, you are required by Federal Law to forward a copy of this notice to the lessee by first class mail within ten (10) days of the receipt of this notice. For US owners: after contacting Altec, if you are still not able to have the safety condition remedied without charge and within a reasonable time, you may submit a complaint to: Administrator, National Highway Traffic Safety Administration, 1200 New Jersey Avenue SE, Washington, DC 20590 or call toll-free 1-888-327-4236 (TTY: 1-800-424-9153) or go to http://www.safercar.gov. For Canadian Owners: if you are still not able to have the safety condition remedied by your dealer within a reasonable time, please contact Altec. We regret this inconvenience; however, we are taking this action in the interest of your safety and continued satisfaction with Altec products. Thank you for your immediate attention on this important matter. 22V-071 April 8, 2022 Page 1 of 3 Customer Service Notice CSN Released: April 8, 2022 Altec Use Only Inspection labor 0.5 hr Repair labor 4.0 hr for doubler installation on all units 6.0 hr additional for crack repair if required Account # 010.0690.43151.000.9212.000 Travel Not included NHTSA code 16 Prime fail P/N 970498549, 970513646 Doc ref 074900816 Altec Use Only Description Part No. Qty Warranty Subbase bulkhead doubler kit, standard height 991465427 1 Yes Subbase bulkhead doubler kit, 2″-4″ drop 991464953 1 Yes 851 Subbase Bulkhead Plate Reinforcement Units Affected: Certain DC45/47 and DM45/47B digger derricks and AM55E aerial devices built from May 2018 to January 2021. Verify your unit is affected by reviewing the attached list or accessing Altec Connect. Background: Altec has learned that the front bulkhead plate on the subbase on the affected units was manufactured from a material having a lower than specified yield strength. This could cause cracking of the bulkhead plate. WARNING Death or serious injury could result from uncontrolled boom movement. Cracking of the bulkhead plate could lead to failure of the outrigger attachment, causing uncontrolled boom movement. Customer Action: The unit must have a reinforcement plate installed on the front bulkhead plate on the subbase. No later than 30 days from the receipt of this CSN, use the Inspection Procedure beginning on page 2 to check for cracks and determine which reinforcement kit is required for the unit. Order and install the reinforcement kit, or schedule the required kit installation to be performed by Altec. If no cracks are found, schedule to install the kit no later than the next preventive maintenance interval or 90 days from the receipt of this CSN, whichever comes first. If crack(s) are found, schedule to install the kit no later than 30 days from the date of the inspection. Requirements: The inspection is estimated to take one person 30 minutes to complete. The repair is estimated to take one person four hours for reinforcement plate installation on all units, and an additional six hours for crack repair on units that require this. All welds must be applied by a welder having the AWS D1.1 3G qualification for uphill progression welding on steel. Completion and Warranty: This inspection and repair are covered under the Altec Warranty Policy and can be performed by Altec, the customer, or the customer’s warranty provider. An Altec Mobile Service technician can perform this inspection but is not able to perform this repair. Altec will perform the work for free at an Altec facility. If the customer or the customer’s warranty provider performs the work, a warranty claim must be submitted to be reimbursed for the cost of the parts and/or labor. Altec will allow up to $45 for the labor to perform the inspection, up to $360 for the labor to perform the repair plate installation on all units, and up to an additional $540 for the labor to perform crack repair on units requiring this. Customers are responsible for the travel costs of an Altec Mobile Service technician if the technician performs the inspection at the owner’s location. Altec Contact Info: Altec Connect: connect.altec.com/login Phone: 1-877-GO ALTEC (1-877-462-5832) | Options: 1 – Parts; 2 – Shop Service; 3 – Mobile Service; 4 – Technical Support; 5 – Global Rental Service Request; 6 – Chassis Repair Page 2 of 3 CSN 851 Inspection Procedure: No tools other than a paint stick or felt-tip marker are required for this inspection. Read and understand all steps of the instructions before beginning the procedure. 1. Position the unit on a level surface, apply the parking brake, and chock the wheels. Engage the power take-off (PTO), and extend the front outriggers far enough to remove the bulge from the front tires. Do not extend the rear outriggers. Disengage the PTO, and turn off the engine. Remove the key from the ignition, and secure it following your employer’s vehicle lockout/tagout procedure. 2.Find the bulkhead plate welded to the front end of the subbase and the front surface of the A-frame outriggers located directly behind the chassis cab (refer to Figures 1 and 2). Confirm whether the ends of the bulkhead are unnotched, as shown in Figure 1, or notched, as shown in Figure 2. 2X 2.90 55.20 .25 2X CURVED PORTION AT END 2X SLOT 2X 2.17 46.67 .25 2X SLOPED PORTION AT END 2X SLOT Figure 1 — Outrigger with Unnotched Bulkhead Plate Figure 2 — Outrigger with Notched Bulkhead Plate Bulkhead Plate Unnotched Ends Outrigger Interlock Switch Assembly Bulkhead Plate Notched Ends Outrigger Interlock Switch Assembly Page 3 of 3 CSN 851 3. Inspect for cracks in the bottom portion of the bulkhead plate at both ends (refer to Figure 3). If cracks are found, mark them with a paint stick or felt-tip marker. 4. Based on the inspection result from step 2, determine the part number of the kit required to repair the unit as described below. • If the bulkhead plate has unnotched ends, the unit requires the Subbase Bulkhead Doubler Kit, Standard Height, part number 991465427. • If the bulkhead plate has notched ends, the unit requires the Subbase Bulkhead Doubler Kit, 2″-4″ Drop, part number 991464953. 5. Order and schedule the installation of the required kit, or schedule to have the required kit installed at an Altec facility. Determine the required schedule for the kit installation based on the inspection result from step 3 as described below. • If no cracks were found, install the kit no later than the unit’s next preventive maintenance interval or 90 days from the receipt of this CSN, whichever comes first. • If crack(s) were found, install the kit no later than 30 days from the date of the inspection. If the customer or the customer’s warranty provider installs the kit, all welds must be applied by a welder having the AWS D1.1 3G qualification for uphill progression welding on steel. 6. Put the unit back into service while awaiting installation of the kit. 55.20 .25 2X CURVED PORTION AT END 2X SLOT 46.67 2X SLOPED PORTION AT END 2X SLOT View of Front Outrigger Looking Toward Rear Bulkhead Plate Unnotched Design Bulkhead Plate, Notched Design Areas to Inspect for Cracks Figure 3 — Crack Inspection Outrigger Interlock Switch Assembly Outrigger Interlock Switch Assembly

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OMB Control No.: 2127-0004 Part 573 Safety Recall Report 22V-071 The information contained in this report was submitted pursuant to 49 CFR §573 Manufacturer Name : Altec Industries, Inc. Submission Date : FEB 09, 2022 NHTSA Recall No. : 22V-071 Manufacturer Recall No. : CSN 851 Manufacturer Information : Manufacturer Name : Altec Industries, Inc. Address : 210 Inverness Center Drive Birmingham AL 35242 Company phone : 205 991 7733 Population : Number of potentially involved : 167 Estimated percentage with defect : 100 % Vehicle Information : Vehicle 1 : 2018-2021 Altec DC & DM Series Digger Derricks, AM series aerial devices Vehicle Type : Body Style : Power Train : NR Descriptive Information : Units produced between the affected dates with the involved components are included in the recall population. The recall population was determined from a review of production records. Production Dates : APR 01, 2018 – JAN 20, 2021 VIN Range 1 : Begin : NR End : NR Not sequential Description of Defect : Description of the Defect : The unit subbase could develop cracks in bulkhead plate. FMVSS 1 : NR FMVSS 2 : NR Description of the Safety Risk : If cracks develop, the plate could break. This could cause the stress in the shear plates to exceed design stresses. Failure of the shear plates could result in the separation of the subbase and truck frame, increasing the risk of death or serious injury to the worker or those nearby. Description of the Cause : NR Identification of Any Warning that can Occur : During a preoperational or periodic inspection, a crack in the bulkhead plate or shear plate should be identified. Involved Components : Part 573 Safety Recall Report 22V-071 Page 2 The information contained in this report was submitted pursuant to 49 CFR §573 Component Name 1 : Subbase bulkhead plate Component Description : Subbase bulkhead plate Component Part Number : 970498549 Component Name 2 : Subbase bulkhead plate Component Description : Subbase bulkhead plate Component Part Number : 970513646 Supplier Identification : Component Manufacturer Name : NR Address : NR NR Country : NR Chronology : A production audit on September 30th, 2021, determined that the incorrect steel grade was used to produce parts cut from ¼ inch thick plate steel. On October 1st, 2021, Altec completed containment on all WIP after confirming the production error. Altec began to evaluate all assemblies where the incorrect material was used. On October 14th, 2021, the subbase plate was identified as a component at risk of exceeding design stress. The subbase designs that included the subject bulkhead plate were modeled and had an FEA set up to analyze the stresses in the material. On January 25th, 2022, a task was created to track the subbase issue after FEA indicated a risk of failure. On February 4th, 2022, after reviewing the analysis results, Altec determined that the material deficiency in the identified units was a safety risk. There have been no warranty claims or field reports identified. There have been no accidents, injuries, or deaths related to this issue. Description of Remedy : Description of Remedy Program : Altec will issue CSN 851 to all affected customers requiring them to inspect and add a reinforcement plate to the bulkhead plate that a qualified service provider can install. Altec Warranty policy covers the recall remedy, and the remedy will be provided free of charge when the unit is presented for repair. Part 573 Safety Recall Report 22V-071 Page 3 The information contained in this report was submitted pursuant to 49 CFR §573 How Remedy Component Differs from Recalled Component : The remedy includes a reinforcement plate to provide additional strength to the incorrect material grade plate installed in production. Identify How/When Recall Condition was Corrected in Production : After identifying the nonconformance, Altec began to audit the laser program and material selection process monthly to confirm that the material used matches the material specified in the design. Recall Schedule : Description of Recall Schedule : Altec will issue CSN 851 to the owners of the affected units. Altec does not have a dealer network and issues letters to owners only. Planned Dealer Notification Date : APR 08, 2022 – APR 08, 2022 Planned Owner Notification Date : APR 08, 2022 – APR 08, 2022 * NR – Not Reported

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