CSN842 – Incorrect Hydraulic Plumbing to Lift Cylinders – 2017-2021 Altec AN67-E100, AA67-E100, AN67, AA67, & AN55-E88 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 AA/AN67, AA/AN67-E100, and AN55-E88 aerial devices built from June 2017 to September 2021. This is to inform you that your vehicle may contain a defect that could affect the safety of a person. The hydraulic plumbing and/or electrical wiring could be connected improperly, preventing the unit from stopping boom movement when the operating range limits are reached. Death or serious injury could result if the unit becomes unstable. Moving the boom beyond the operating range limits while using the material handling jib can cause the unit to become unstable. 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 expected to take 1 hours to complete. The repair is expected to take 1 hour to complete. 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. 21V-998 February 18, 2022 Page 1 of 8 Customer Service Notice CSN Released: February 18, 2022 Altec Use Only Inspection labor 1.0 hr Repair labor 1.0 hr Account # 010.0393.43151.000.9195.000 Travel Not included NHTSA code 98 Prime fail P/N N/A Doc ref N/A Altec Use Only Description Part No. Qty Warranty N/A N/A N/A N/A 842 Platform-to-Ground Interlock Inspection Units Affected: Certain AA/AN67, AA/AN67-E100, and AN55-E88 aerial devices built from June 2017 to September 2021. Verify your unit is affected by reviewing the attached list or accessing Altec Connect. Background: The affected units are equipped with a platform-to-ground interlock system to prevent material handling from the boom tip jib and winch with the booms in extended reach positions. Altec has learned that the hydraulic plumbing and/or the electrical wiring could be connected improperly to the platform- to-ground blocking valve, preventing the system from stopping boom movement when the operating range limits are reached. WARNING Death or serious injury could result if the unit becomes unstable. Moving the boom beyond the operating range limits while using the material handling jib can cause the unit to become unstable. Customer Action: Use the Inspection and Repair Procedure beginning on page 2 to check the interlock operation, and correct the plumbing if required. Do this no later than the next preventive maintenance interval or 30 days from the receipt of this CSN, whichever comes first. Requirements: The inspection is estimated to take 1 hour and 1 person to complete. The use of the AXIS service interface is recommended. The repair is estimated to take 1 hour and 1 person to complete. Completion and Warranty: The inspection and repair are covered under the Altec Warranty Policy and can be performed by Altec, the customer, or the customer’s warranty provider. 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 $90 for the labor to perform the inspection and up to $90 for the labor to perform the repair. Customers are responsible for the travel costs of an Altec Mobile Service technician if the technician performs the work 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 8 CSN 842 Inspection and Repair Procedure: The use of the AXIS service interface to read the lower boom angle and a digital level to read the upper boom angle is recommended for this inspection. If the AXIS is not available, two digital levels can be used with the assistance of a second person. Read and understand all steps of the instructions before beginning the procedure. Setup 1. Position the unit on a level surface with adequate clearance to fully articulate the booms. Apply the parking brake, and chock the wheels. Engage the power take-off (PTO), and properly set the outriggers. Keep the elevator stowed on units with an elevator. 2. If the temperature outside is below 32 degrees Fahrenheit (0 degrees Celsius), use the Cold Weather Start-Up procedure in the Operator’s Manual to warm the hydraulic oil before operating the unit. Do not operate the pump or engine at more than a fast idle until the hydraulic oil has warmed up. 3. Remove any tools and other items from the platform, except the liner. 4. If using the AXIS, connect it to the service port on the turntable, log in using your AXIS credentials, set it to display the lower boom angle, and use your mobile device from the platform to read the lower boom angle C during the inspection when operating the unit from upper controls. If not using the AXIS, attach a digital level to the top or bottom of the stowed lower boom, and have a second person read the lower boom angle D when required. In either case, use a digital level while in the platform to measure the upper boom angle B when required. Calculate the angles as specified according to Figure 1. Testing Upper Boom Platform-to-Ground Interlock 5. Enter the platform, and put on the personal fall protection system. Use the upper controls for steps 6 through 10. 6. Unfold the upper boom to 20 to 30 degrees above the stowed lower boom. 7. Operate the boom function(s) as described below (refer to Figure 2). • AN series: Raise the lower boom, stopping when the amber indicator light on the turntable turns on. – If using AXIS, the lower boom angle C will now be between 103 and 107 degrees. Record angle C _____. – If using a digital level, the lower boom angle D will now be between 73 and 77 degrees. Record angle D _____. • AA series: Raise the lower boom while continuously adjusting the upper boom to maintain 20 to 30 degrees between the booms, stopping both functions when the amber indicator light on the turntable turns on. – If using AXIS, the lower boom angle C will now be between 103 and 107 degrees. Record angle C _____. – If using a digital level, the lower boom angle D will now be between 73 and 77 degrees. Record angle D _____. A=angle between upper and lower booms B=upper boom angle measured with digital level C=lower boom angle displayed on AXIS D=lower boom angle measured with digital level A = C – B; B = C – A or A = 180 – B – D; B = 180 – D – A Figure 1 — Equations for Boom Angles 105° 25° Figure 2 — Boom Positions for Step 7 C=103° to 107° D=73° to 77° A= 20° to 30° Page 3 of 8 CSN 842 8. Calculate the three possibilities for angle B to use when unfolding the upper boom in step 9, based on values of 45 degrees, 55 degrees, and 60 degrees for angle A and using angle C or D from step 7 (refer to Figure 3). • If using AXIS for the lower boom angle C, calculate using B=C-A. – B1=C-45. Record angle B1 _____. – B2=C-55. Record angle B2 _____. – B3=C-60. Record angle B3 _____. – For example, if C=106, then B1=106-45=61, B2=106-55=51, and B3=106-60=46. • If using a digital level for the lower boom angle D, calculate using B=180-D-A. – B1=180-D-45. Record angle B1 _____. – B2=180-D-55. Record angle B2 _____. – B3=180-D-60. Record angle B3 _____. – For example, if D=74, then B1=180-74-45=61, B2=180-74-55=51, and B3=180-74-60=46. 9. Operate Upper Boom Unfold as described below (refer to Figure 3). • If the upper boom stops moving on its own between angles B1 and B2 as calculated in step 8 (corresponding to angle A between 45 and 55 degrees), release the control. The upper boom platform-toground interlock is functioning properly. Proceed to step 23. • If the upper boom has not stopped moving on its own when it reaches angle B3 as calculated in step 8 (corresponding to angle A = 60 degrees), release the control. The upper boom platform-to-ground interlock is not functioning properly. Proceed to step 10. Inspecting Interlock Wiring and Plumbing 10. Move the booms to place the platform at the ground, and exit from the platform. 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. 11. Remove the cover from the curb side of the turntable. Find the 2-spool platform-toground blocking valve and the lower control valve on the valve mounting plate on the side of the turntable (refer to Figure 4). 12. Check whether the turntable wiring harness is connected properly to the solenoid coils on the blocking valve as described below (refer to Figures 4 and 5). a. The connector with the violet/black and black wires and labeled LB is plugged into the lower boom coil, located between the LS1 and WP1 ports, farthest from the turntable. b. The connector with the orange/black and black wires and labeled UB is plugged into the upper boom coil, located between the LS2 and WP2 ports, closest to the turntable. Figure 4 — Valves on Turntable Lower Control Valve Platformto- Ground Blocking Valve Platform Tilt Load Sense Boost Valve Lower Boom Coil Upper Boom Coil 55° 105° Figure 3 — Boom Positions for Steps 8-9 C=103° to 107° B1, B2, B3 D=73° to 77° A Page 4 of 8 CSN 842 13. Check whether the plumbing between the blocking valve and the lower control valve is correct as described below (refer to Figure 5). a. The hose from the port on the back of the lower boom section of the lower control valve is connected to port LS1 on the blocking valve. b. The hose from the port on the back of the upper boom section of the lower control valve is connected to port LS2 on the blocking valve. c. The hose from the C2 port of the lower boom section on the front of the lower control valve is connected to port WP1 on the blocking valve. d. The hose from the C1 port of the upper boom section on the front of the lower control valve is connected to port WP2 on the blocking valve. 14. Review the results of the wiring and plumbing inspection. • If the wiring harness is connected properly to the two coils and all four hoses are connected properly between the two valves, perform additional troubleshooting and take corrective action to restore proper operation of the upper boom platform-to-ground interlock. If necessary, contact Altec Technical Support for assistance as described on page 1. To verify that proper operation has been restored, proceed to step 17. • If the wiring is reversed and/or if any hoses are connected incorrectly between the two valves, proceed to step 15. C2 C1 C2 C1 C2 C1 C2 C1 PPD UC OUT TOOLS DH1 PR1 P DH2 T PP IN LS2 WP2 LS1 WP1 BLK VIO/BLK BLK ORG/BLK LB UB Figure 5 — Proper Interlock Wiring and Plumbing Lower Control Valve, Back View Lower Control Valve, Front View Platform-to- Ground Blocking Valve Lower Boom Section Upper Boom Section Wiring Harness Page 5 of 8 CSN 842 Correcting Interlock Wiring and Plumbing 15. If the connectors on the wiring harness are plugged into the wrong coils, unplug them and plug them into the opposite coils (refer to Figures 4 and 5). WARNING Death or serious injury can result from hydraulic oil being injected into the flesh when loosening or disconnecting hydraulic components. Remove the pressure before loosening or disconnecting hydraulic components. Seek immediate medical attention if injured by escaping hydraulic oil. Serious infection or reaction can result if medical treatment is not given immediately. Spilled hydraulic oil creates slick surfaces and can cause personnel to slip and/or fall. Keep the unit and work areas clean. 16. Disconnect any improperly plumbed hoses from the elbows in the incorrect ports on the 2-spool blocking valve, and connect them to the elbows in the correct ports on this valve (refer to Figure 5). 17. Reinstall the cover on the turntable. Retesting Upper Boom Platform-to-Ground Interlock 18. Start the engine, and engage the PTO. Enter the platform, and put on the personal fall protection system. Use the upper controls for steps 19 through 23. 19. Move the lower boom to the vertical position and the upper boom to 20 to 30 degrees above the lower boom. 20. Operate the boom function(s) as described below (refer to Figure 6). • AN series: Raise the lower boom, stopping when the amber indicator light on the turntable turns on. – If using AXIS, the lower boom angle C will now be between 103 and 107 degrees. Record angle C _____. – If using a digital level, the lower boom angle D will now be between 73 and 77 degrees. Record angle D _____. • AA series: Raise the lower boom while continuously adjusting the upper boom to maintain 20 to 30 degrees between the booms, stopping both functions when the amber indicator light on the turntable turns on. – If using AXIS, the lower boom angle C will now be between 103 and 107 degrees. Record angle C _____. – If using a digital level, the lower boom angle D will now be between 73 and 77 degrees. Record angle D _____. 105° 25° Figure 6 — Boom Positions for Step 20 C=103° to 107° D=73° to 77° A= 20° to 30° Page 6 of 8 CSN 842 21. Calculate the three possibilities for angle B to use when unfolding the upper boom in step 22, based on values of 45 degrees, 55 degrees, and 60 degrees for angle A and using angle C or D from step 20 (refer to Figure 7). • If using AXIS for the lower boom angle C, calculate using B=C-A. – B1=C-45. Record angle B1 _____. – B2=C-55. Record angle B2 _____. – B3=C-60. Record angle B3 _____. – For example, if C=106, then B1=106-45=61, B2=106-55=51, and B3=106-60=46. • If using a digital level for the lower boom angle D, calculate using B=180-D-A. – B1=180-D-45. Record angle B1 _____. – B2=180-D-55. Record angle B2 _____. – B3=180-D-60. Record angle B3 _____. – For example, if D=74, then B1=180-74-45=61, B2=180-74-55=51, and B3=180-74-60=46. 22. Operate Upper Boom Unfold as described below (refer to Figure 7). • If the upper boom stops moving on its own between angles B1 and B2 as calculated in step 21 (corresponding to angle A between 45 and 55 degrees), release the control. The upper boom platform-toground interlock is functioning properly. Proceed to step 23. • If the upper boom has not stopped moving on its own when it reaches angle B3 as calculated in step 21 (corresponding to angle A = 60 degrees), release the control. The upper boom platform-to-ground interlock is not functioning properly. Perform additional troubleshooting and take corrective action to restore proper operation of the upper boom platform-to-ground interlock. If necessary, contact Altec Technical Support for assistance. When proper operation has been restored, proceed to step 23. Testing Lower Boom Platform-to-Ground Interlock 23. Move the booms to place the platform at the ground, and exit from the platform. Use the lower controls for steps 24 through 27. If using AXIS during these steps, use your mobile device from the lower controls to read the lower boom angle C. If not using AXIS during these steps, use a digital level to read the lower boom angle D. 24. Move the lower boom to the vertical position (refer to Figure 8). 25. Move the upper boom to a position 90 to 120 degrees from the lower boom. 55° 105° Figure 7 — Boom Positions for Steps 21-22 C=103° to 107° B1, B2, B3 D=73° to 77° A 90° 90° 90° Figure 8 — Boom Positions for Steps 24-25 90° to 120° C=90° D=90° Page 7 of 8 CSN 842 26. Operate Lower Boom Raise as described below (refer to Figure 9). • If the lower boom stops moving on its own at an angle C between 103 and 107 degrees according to AXIS or angle D between 73 and 77 degrees according to the digital level, release the control. The amber indicator light on the turntable should not turn on. The lower boom platform-to-ground interlock is functioning properly. Proceed to step 27. • If the lower boom does not stop moving on its own at an angle C between 103 and 107 degrees according to AXIS or angle D between 73 and 77 degrees according to the digital level, release the control. The lower boom platform-to-ground interlock is not functioning properly. Perform required troubleshooting and take corrective action to restore proper operation of the lower boom platform-to-ground interlock. If necessary, contact Altec Technical Support for assistance. When proper operation has been restored, proceed to step 27. Completion 27. Stow the booms, retract the outriggers, and put the unit back into service. 28 Complete the Inspection Sheet at the end of the CSN and return it to Altec. 105° 90° Figure 9 — Boom Positions for Step 26 90° to 120° C=103° to 107° D=73° to 77° Page 8 of 8 CSN 842 Model Altec Unit Serial Number Date Inspected Inspection Sheet Company Name: _______________________________________________ Phone____________________________ Service Company Name:_________________________________________ Phone:___________________________ Company Contact: _________________________________________________________________________________ Company Street Address:_____________________________________________________________________________ City: _______________________________________________State/Province:_________________________________ ZIP/Mailing Code:___________________________________Country:________________________________________ Signature:__________________________________________ Complete this form and submit it to Altec to document inspection completion. Choose one of these options for submission. • Online through the customer portal – Altec Connect* Sign in or Register for an account at connect.altec.com/login 1. Select Equipment 2. Select Altec Product Notices 3. Select Report a Completed APN • Scan and Email to product.safety@altec.com • FAX to 1-877-659-9929 • Mail to: Customer Outreach; PO Box 8338; Saint Joseph, MO 64508 Scan here to access Altec Connect. Submission of this form does not order parts or schedule service from Altec. * If the customer or the customer’s warranty provider performs the repair, submit a warranty claim through Altec Connect to be reimbursed for the cost of the parts and/or labor. Contact Altec for more information or to schedule the work to be done by Altec. Make copies of this form for additional units if needed.

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OMB Control No.: 2127-0004 Part 573 Safety Recall Report 21V-998 The information contained in this report was submitted pursuant to 49 CFR §573 Manufacturer Name : Altec Industries, Inc. Submission Date : DEC 20, 2021 NHTSA Recall No. : 21V-998 Manufacturer Recall No. : CSN 842 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 : 150 Estimated percentage with defect : 10 % Vehicle Information : Vehicle 1 : 2017-2021 Altec AN67-E100, AA67-E100, AN67, AA67, AN55-E88 Vehicle Type : Body Style : Power Train : NR Descriptive Information : The affected model units with the involved feature, produced between the affected dates are included in the recall population. The recall population was determined from a review of production records. Production Dates : JUN 01, 2017 – DEC 17, 2021 VIN Range 1 : Begin : NR End : NR Not sequential Description of Defect : Description of the Defect : The listed models are range limited to prevent handling material with the boom tip jib and winch in extended reach positions. On the affected units, the hydraulic plumbing to the lift cylinders of the lower and upper booms could be connected to the incorrect ports at the blocking valve in the turntable. When the unit is in the extended reach position, the incorrect plumbing to the lower and upper boom could block the hydraulic flow to the incorrect function allowing the boom to enter restricted boom positions. The defect is present at shipment and does not change during the unit’s life. FMVSS 1 : NR FMVSS 2 : NR Description of the Safety Risk : The operator could move beyond the range limits while using the material handling jib, causing the unit to tip over, resulting in potential injury or death to the worker or those nearby. Description of the Cause : NR Identification of Any Warning A preoperational inspection would detect the defect when the boom is Part 573 Safety Recall Report 21V-998 Page 2 The information contained in this report was submitted pursuant to 49 CFR §573 that can Occur : operated in the restricted boom position with the indicator light is illuminated. The warning system will indicate the unit is in a restricted boom position, but the interlock system will not disable the proper boom function. The operator should use the upper boom zone indicator light at the turntable to determine if material handling is allowed. Involved Components : Component Name 1 : Directional Control Valve (Blocking) Component Description : Directional Control Valve, 2 Position 2 Way, Blocking, 2 Spool Component Part Number : 990386486 Supplier Identification : Component Manufacturer Name : NA Address : NR NR Country : NR Chronology : In March of 2021 Altec Service notified aerial product support of 3 units with the platform to ground feature not functioning correctly. Product support communicated the repair procedure to service, and the units were repaired. The incorrect plumbing was believed to be limited to these 3 units. In August of 2021, Altec found additional units with incorrect plumbing and investigated to determine if additional units may be in the field. Altec began to sample the field population and failure mode of the affected units. The investigation found that in the production of these models, a step to verify the range limiting feature was not being completed consistently. On December 17, 2021, Altec determined there was the possibility of additional affected units in the field and decided to issue a defect report. There were no other warranty claims or field reports identified. There have been no accidents, injuries, or deaths related to this issue. Part 573 Safety Recall Report 21V-998 Page 3 The information contained in this report was submitted pursuant to 49 CFR §573 Description of Remedy : Description of Remedy Program : The remedy will include instruction to inspect the unit for incorrect plumbing and describe the steps required to repair the plumbing at the turntable. Altec Warranty policy covers the recall remedy, and the remedy will be provided free of charge when the unit is presented for repair. How Remedy Component Differs from Recalled Component : Once the plumbing is corrected, the hydraulic flow will be blocked to the correct function. The upper boom articulating cylinder flow will be blocked when the lower boom is in the extended reach position and flow to the lower boom extend function will be blocked to prevent the lower boom from entering the extended reach position when the upper boom is outside of the allowed boom position. Identify How/When Recall Condition was Corrected in Production : Quality controls checks were implemented to improve the test procedure completed on each unit in production to verify that the blocking valve plumbing is correct. Recall Schedule : Description of Recall Schedule : Altec will issue CSN 842 to the owners of the affected units. Altec does not have a dealer network and issues letters to owners only. Planned Dealer Notification Date : NR – NR Planned Owner Notification Date : FEB 18, 2022 – FEB 18, 2022 * NR – Not Reported

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