Broken Shaft Seal May Cause Loss of Power Steering – 2020-2021 Oshkosh S-Series

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1 SAFETY NOTICE Vehicle Safety Recall – Technical Service Bulletin PROMPT ACTION REQUIRED Attention: Subject: Models Affected: Model Year: Date: Oshkosh Product Owner Power Steering Pump Oshkosh S-Series Front Discharge Mixer 2020-2021 (VIN 801358 – 809179) December 2021 VSR-TSB-033 NHTSA Campaign Number: 21V-851 Purpose: A concern affecting safety exists in some Oshkosh S-Series Front Discharge Mixers. Trucks have been identified that may be equipped with a ZF power steering pump that might contain an internal pump rotor machining defect. The defect may cause the pump’s pressure to build and cause the pump’s shaft seal to leak, resulting in a loss of power steering assist. The leaking shaft seal can also allow hydraulic oil to enter the engine oil. This bulletin provides instruction on inspecting the power steering pump serial number and steps required if power steering pump requires replacement. Affected Vehicles: The affected vehicle population is Oshkosh S-Series Front Discharge Mixers produced in 2020-2021. Units Affected: VIN 801358 – 809179 Please refer to the attached VIN list of affected vehicles. Time Completion: Complete the enclosed procedure for each affected truck. The time of accomplishment may vary due to a number of factors; however, the estimated time for pump inspection is 0.5 hours and the time for pump replacement is 2.5 hours. Required Action: Review and verify your ownership of all affected serial numbers of Oshkosh vehicles. Oshkosh records indicate that you are the owner of one or more affected trucks, a Serial Number List is enclosed. Please be reminded that it is a violation of Federal law for you to sell or lease the vehicles covered by this notification until this recall has been performed on these vehicles. Substantial civil penalties apply to violations of this law. Reimbursement of Costs: Affected trucks can be inspected using the customer’s own qualified service technicians – at no cost to the owner. The inspection should take approximately 0.5 hours and the time for pump replacement is 2.5 hours. Customers can also choose to have an Oshkosh/McNeilus service center perform the inspection and repair work free of charge. Parts/Labor Reimbursement: In order to receive credit, claims are to be submitted through the normal warranty claim system. Claims must be received within 30 days of the repair. Claims must include the Oshkosh VIN of the vehicle, the customer asset number, and the number of this bulletin. 2 Contacts: If you have questions or need further information, please contact S-Series Service Support at 888-686-7278 Enclosures: Procedure VIN List of Affected Vehicles Parts Required: Item Part Number Description Qty. 1 A000H951 PUMP, VANE SGL 1.95 F CCW A 1 2 1694630 GASKET, STEERING PUMP 1 SAFETY NOTICEPerform your company’s Lockout/Tagout procedure. If your company does not have a Lockout/Tagout procedure, follow OSHA 1910.147 and 1910.146 Confined Space as appropriate.SAFETY NOTICEUse appropriate Personal Protective Equipment (PPE) as required by your company. Procedure Preparation and Inspection 1. Park truck on flat, level surface, engage parking brake, chock truck tires, and perform your company’s Lockout/Tagout procedure. If your company does not have a Lockout/Tagout procedure, follow OSHA 1910.147 and 1910.146 Confined Space as appropriate. 2. Battery Disconnect Switch The vehicle’s BATTERY DISCONNECT switch is located on the left-hand side of the battery box. Use the battery disconnect switch when performing any maintenance so the vehicle cannot accidentally be started. a. Turn the battery disconnect switch (Figure A, Item 1) counterclockwise so the hole on the switch aligns with the hole in the bracket (Figure A, Item 2). b. Install the safety lockout device ring (Figure B, Item 1) through the holes on the battery disconnect switch and the bracket. WARNING Hydraulic systems are hot. DO NOT TOUCH!Serious personal injury may result from hot oil. When you have completed working on thehydraulic systems, thoroughly clean any spilled oil from the equipment. Do not spill any hydraulic fluids on the ground. Clean any hydraulic fluids from your skin as soon as you have completed your maintenance and repairs. Dispose of used oil and filters as required by law.WARNINGNever remove hydraulic pipes/tubing, fittings,and adapters until all pressure has been relieved from the hydraulic system.WARNINGAll hydraulic pressures must be relieved from the hydraulic system prior to removing anycomponents from the system to prevent oil from spraying or functions and systems from failing.WARNINGHydraulic systems operate under highpressure—only experienced persons shouldattempt repairs or troubleshooting on hydraulic systems. 3 c. Install a padlock (Figure B, Item 2) onto the safety lockout device ring, lock it, and put the key in your pocket. If more than one person is working on the vehicle, each person must install his or her own padlock. Figure A D ANGERThis energy source hasUnauthorized removal ofthis lock/tag may resultin immediate discharge.Remarks:been LOCKED OUT! Figure B 1 2 1 2 d. Allow truck to cool before inspecting/replacing power steering pump. Pump Inspection 3. Locate power steering pump on right-hand side of engine, see Figure 1. The pump serial number is stamped on pump body, closest to the engine block. Use a mirror to verify pump serial number on pump body. If the pump serial number matches one of the serial numbers in Table 1 continue to Step 4. If the pump serial number does not match one of the serial numbers in Table 1 pump inspection is complete and no further action is required. Power Steering Pump Figure 1 Pump Serial No. Location – Back Side of Pump TR W NO. PSXXXXXXXXXXXXXSERIAL NO. XXXXX-XXXCUST. NO. XXXXXXXXXXXXXXX Power Steering Pump Serial Number 4 Table 1 Pump Serial Numbers P3201981823 P4201271406 P4201431316 P4201570287 P4201981815 P4201981844 P3201981832 P4201271407 P4201431317 P4201570294 P4201981816 P4201982016 P4201271356 P4201271408 P4201431318 P4201570295 P4201981817 P4201982017 P4201271357 P4201271409 P4201431319 P4201570296 P4201981818 P4201982018 P4201271358 P4201271410 P4201431320 P4201570297 P4201981819 P4201982019 P4201271360 P4201271412 P4201483226 P4201570298 P4201981820 P4201982020 P4201271361 P4201271413 P4201483227 P4201570299 P4201981824 P4201982021 P4201271362 P4201271414 P4201483228 P4201570300 P4201981825 P4201982022 P4201271363 P4201271415 P4201483229 P4201570301 P4201981826 P4201982023 P4201271364 P4201431300 P4201483230 P4201570302 P4201981827 P4201982024 P4201271365 P4201431301 P4201483231 P4201570303 P4201981828 P4201982025 P4201271366 P4201431302 P4201483232 P4201570304 P4201981829 P4201982026 P4201271367 P4201431303 P4201483233 P4201570305 P4201981830 P4201982027 P4201271368 P4201431304 P4201483234 P4201570306 P4201981831 P4201982028 P4201271369 P4201431305 P4201483235 P4201570307 P4201981833 P4201982029 P4201271370 P4201431306 P4201483236 P4201981802 P4201981834 P4201982030 P4201271371 P4201431307 P4201483237 P4201981803 P4201981835 P4201271372 P4201431308 P4201483260 P4201981804 P4201981836 P4201271399 P4201431309 P4201483261 P4201981805 P4201981837 P4201271400 P4201431310 P4201483262 P4201981807 P4201981838 P4201271401 P4201431311 P4201483263 P4201981808 P4201981839 P4201271402 P4201431312 P4201483264 P4201981809 P4201981840 P4201271403 P4201431313 P4201483265 P4201981812 P4201981841 P4201271404 P4201431314 P4201483266 P4201981813 P4201981842 P4201271405 P4201431315 P4201570274 P4201981814 P4201981843 5 Pump Removal and Installation CAUTION Cap or cover ends of hydraulic lines after disconnecting lines from power steering pump. Failure to comply could result in hydraulic system comanination and component damage. 4. Loosen and remove power steering pump suction line from power steering pump, see Figure 2. Cap line and temporarily secure to side of engine near pump. 5. Loosen and remove power steering pump pressure line from power steering pump, see Figure 2. Cap line and temporarily secure to side of engine near pump. Figure 2 Suction Line Pressure Line 6. Loosen and remove two M10-1.5 flanged hex screws securing power steering pump to engine air compressor, see Figure 3. Save hardware for installation of new pump. 7. Remove power steering pump and gasket from engine air compressor, see Figure 3. Figure 3 M10-1.5 Flanged Hex Screws 6 8. Place pump on a bench and remove suction line 90° fitting from power steering pump, see Figure 4. Save fitting for reinstallation on new pump. 9. Remove pressure line 45° fitting from power steering pump, see Figure 4. Save fitting for reinstallation on new pump. Pressure Line Fitting Figure 4 Suction Line Fitting 10. Apply lube to pump pressure line 45° fitting O-ring removed in Step 9. 11. Install pump pressure line 45° fitting in new pump (A000H951). Final tighten fitting to 36 ft. lbs. and orient fitting as shown in Figure 5. Pressure Line Fitting Figure 5 86° 12. Apply lube to pump suction line 90° fitting O-ring removed in Step 8. 13. Install pump suction line 90° fitting in new pump (A000H951). Final tighten fitting to 93 ft. lbs. and orient fitting as shown in Figure 6. Suction Line Fitting Figure 6 120° 14. Clean any old gasket material from engine air compressor pump mounting surface. 7 15. Install new pump (A000H951) with gasket (1694630) on engine air compressor, see Figure 7. 16. Apply Loctite® #242 to threads of two M10-1.5 flanged hex screws removed in Step 6. 17. Secure pump to air compressor with two M10-1.5 flanged hex screws, see Figure 7. Final tighten screws to 35 ft. lbs. 18. Reconnect pump pressure line to power steering pump, see Figure 7. Final tighten to 45 ft. lbs. 19. Reconnect pump suction line to power steering pump, see Figure 7. Figure 7 Suction Line Pressure Line 20. Check engine oil level. If engine oil level is high, hydraulic oil may have entered engine from power steering pump. Change engine oil per engine manufacturer’s manual. 21. Remove lockout/tagout and tire chocks. Continue to Hydraulic System Priming Procedure to prime the new power steering pump and remove any air that may have entered the hydraulic system. Hydraulic System Priming Procedure 22. Remove hydraulic reservoir fill cap and fill reservoir to full mark with clean, new hydraulic oil, see Figure 8. Do not reinstall fill cap at this time. Figure 8 Hydraulic Oil Reservoir Fill Cap Full Mark 8 23. Slightly loosen power steering pump pressure line, see Figure 9. 24. Using pressurized air, slowly pressurize hydraulic tank until fluid is pushed through steering pump and seeps out pump pressure line connection. 25. Retighten power steering pump pressure line, see Figure 9. Figure 9 Pressure Line NOTE Perform Steps 27 – 35 with the truck’s engineoperating. 26. Start truck while keeping pressure in hydraulic reservoir. 27. Operate all vehicle hydraulic circuits, i.e. chutes, water pump, drum. If hydraulic oil level gets low during operation of hydraulic circuits, remove pressure and add hydraulic oil to reservoir. 28. Remove pressure from hydraulic reservoir and reinstall original fill cap. 29. Let truck idle for 2 minutes without steering the front wheels. 30. Steer the truck’s front wheels from full left to full right 4-5 times. 31. Point the truck’s wheels in the straight ahead position. 32. Check hydraulic oil level in hydraulic reservoir. Add clean, new hydraulic oil as required. 9 Continuous Improvement: The change included in this document is part of the McNeilus Continuous Improvement Process. McNeilus’s quality policy is providing customer satisfaction through innovative products, dedicated service, and a constant focus on continuous improvement. (888) 686-7278 www.streetsmartparts.com 33. Locate primary steering gear bleeder screw, see Figure 10. Figure 10 Bleeder Screw Front of Truck 34. Loosen steering gear bleeder screw and allow air and aerated fluid to bleed out until fluid appears without bubbles. If the bleeder screw is not visible, allow the system to bleed until fluid drains from the bleeder screw. 35. Close bleeder screw and final tighten to 45 in. lbs. 36. Turn the truck’s engine OFF. 37. Refill the hydraulic reservoir as required with clean, new hydraulic oil. 38. Clean any spilled hydraulic oil from the truck and area.

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OMB Control No.: 2127-0004 Part 573 Safety Recall Report 21V-851 The information contained in this report was submitted pursuant to 49 CFR §573 Manufacturer Name : Oshkosh Corporation Submission Date : DEC 15, 2021 NHTSA Recall No. : 21V-851 Manufacturer Recall No. : NR Manufacturer Information : Manufacturer Name : Oshkosh Corporation Address : 2307 Oregon Street PO Box 2566 Oshkosh WI 54903-2566 Company phone : 920-235-9151 Population : Number of potentially involved : 687 Estimated percentage with defect : 20 % Vehicle Information : Vehicle 1 : 2020-2021 Oshkosh S-Series Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : ALL Power Train : DIESEL Descriptive Information : The recall is based on vehicles equipped with certain power steering pumps supplied by ZF. The Oshkosh part number is A000H951. Production Dates : MAY 13, 2020 – MAR 23, 2021 VIN Range 1 : Begin : NR End : NR Not sequential Description of Defect : Description of the Defect : According to the recall report submitted by ZF, a machining defect on the internal pump rotor caused the rotor to be out of the specified flatness. This condition may cause the pressure to build and the steering shaft seal to leak, resulting in a loss of power steering assist. FMVSS 1 : NR FMVSS 2 : NR Description of the Safety Risk : A loss of power steering assist could increase the risk of a crash. Description of the Cause : NR Identification of Any Warning that can Occur : If a vehicle’ engine oil is over full, this may be a sign that of a failed pump shaft seal. Low hydraulic oil in the tank may be a sign of hydraulic oil moving past the pump shaft seal. Increased effort to steer the vehicle may be an indication of a failed steering pump. Involved Components : Part 573 Safety Recall Report 21V-851 Page 2 The information contained in this report was submitted pursuant to 49 CFR §573 Component Name 1 : Power steering pump Component Description : Power steering pump Component Part Number : A000H951 Supplier Identification : Component Manufacturer Name : ZF North America, Inc. Address : 800 Heath St Lafayette Indiana 47904 Country : United States Chronology : In August 2021, Oshkosh was contacted by its supplier, ZF, about a potential issue affecting certain power steering pumps. ZF noted that another OEM, Spartan Fire, had conducted a safety recall on a power steering pump with a similar part number. Oshkosh initiated an internal review of its experience with the power steering pump at issue and noted that while it had received a limited number of warranty claims, the majority of those claims involved failures that occurred within the first approximately five months of vehicle use. Based on this data and information from the supplier that any affected parts would have been isolated to within the first five months of vehicle use, it was believed that any issues with the power steering pumps in Oshkosh vehicles were isolated to early use of the vehicle and had already been addressed in the field. In late September 2021, Oshkosh received a report of two trucks that experienced a power steering pump failure. Upon further investigation, Oshkosh determined that these vehicles were approximately one year old at the time of the failure. Since the production date of these two vehicles fell well-outside of the timeline that suggested the parts issue was isolated to early use of the vehicle, Oshkosh began to investigate further. Oshkosh found that all related warranty claims involved reports of hydraulic power steering oil falling onto engine oil with no reports indicating an actual loss of steering assist while driving. On October 27, 2021, NHTSA contacted Oshkosh about whether it would be submitting a recall report related to this issue. Oshkosh’s investigation was already ongoing and on November 1, 2021, Oshkosh decided to initiate a safety recall to address vehicles in the field. Part 573 Safety Recall Report 21V-851 Page 3 The information contained in this report was submitted pursuant to 49 CFR §573 Description of Remedy : Description of Remedy Program : Oshkosh will provide customers with a list of serial numbers for the affected power steering pump parts and have customers inspect and replace if a suspect pump found. Oshkosh will provide customers with Instructions on how to inspect for affected pumps as well as instructions on how to install a new pump if pump replacement is needed. The replacement parts will be provided at no cost to customers and customers would also be reimbursed for labor costs. Customers can also choose to have a service center perform the inspection and repair work free of charge. How Remedy Component Differs from Recalled Component : The remedy component has been inspected by ZF and confirmed rotor flatness within their specifications. Identify How/When Recall Condition was Corrected in Production : According to the supplier, power steering pumps from ZF were measured and do not exhibit this issue after 07/23/20. No concerns have been reported on vehicles built with known good parts for rotor out of flatness specification. Recall Schedule : Description of Recall Schedule : Notifications to customers will be made via a customer letter. The 577 customer letter will be mailed pending NHTSA approval. Oshkosh does not distribute vehicles through dealers. Planned Dealer Notification Date : NR – NR Planned Owner Notification Date : DEC 13, 2021 – DEC 15, 2021 * NR – Not Reported

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OMB Control No.: 2127-0004 Part 573 Safety Recall Report 21V-851 The information contained in this report was submitted pursuant to 49 CFR §573 Manufacturer Name : Oshkosh Corporation Submission Date : DEC 07, 2021 NHTSA Recall No. : 21V-851 Manufacturer Recall No. : NR Manufacturer Information : Manufacturer Name : Oshkosh Corporation Address : 2307 Oregon Street PO Box 2566 Oshkosh WI 54903-2566 Company phone : 920-235-9151 Population : Number of potentially involved : 687 Estimated percentage with defect : 20 % Vehicle Information : Vehicle 1 : 2020-2021 Oshkosh S-Series Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : ALL Power Train : DIESEL Descriptive Information : The recall is based on vehicles equipped with certain power steering pumps supplied by ZF. The Oshkosh part number is A000H951. Production Dates : MAY 13, 2020 – MAR 23, 2021 VIN Range 1 : Begin : NR End : NR Not sequential Description of Defect : Description of the Defect : According to the recall report submitted by ZF, a machining defect on the internal pump rotor caused the rotor to be out of the specified flatness. This condition may cause the pressure to build and the steering shaft seal to leak, resulting in a loss of power steering assist. FMVSS 1 : NR FMVSS 2 : NR Description of the Safety Risk : A loss of power steering assist could increase the risk of a crash. Description of the Cause : NR Identification of Any Warning that can Occur : If a vehicle’ engine oil is over full, this may be a sign that of a failed pump shaft seal. Low hydraulic oil in the tank may be a sign of hydraulic oil moving past the pump shaft seal. Increased effort to steer the vehicle may be an indication of a failed steering pump. Involved Components : Part 573 Safety Recall Report 21V-851 Page 2 The information contained in this report was submitted pursuant to 49 CFR §573 Component Name 1 : Power steering pump Component Description : Power steering pump Component Part Number : A000H951 Supplier Identification : Component Manufacturer Name : ZF North America, Inc. Address : 800 Heath St Lafayette Indiana 47904 Country : United States Chronology : In August 2021, Oshkosh was contacted by its supplier, ZF, about a potential issue affecting certain power steering pumps. ZF noted that another OEM, Spartan Fire, had conducted a safety recall on a power steering pump with a similar part number. Oshkosh initiated an internal review of its experience with the power steering pump at issue and noted that while it had received a limited number of warranty claims, the majority of those claims involved failures that occurred within the first approximately five months of vehicle use. Based on this data and information from the supplier that any affected parts would have been isolated to within the first five months of vehicle use, it was believed that any issues with the power steering pumps in Oshkosh vehicles were isolated to early use of the vehicle and had already been addressed in the field. In late September 2021, Oshkosh received a report of two trucks that experienced a power steering pump failure. Upon further investigation, Oshkosh determined that these vehicles were approximately one year old at the time of the failure. Since the production date of these two vehicles fell well-outside of the timeline that suggested the parts issue was isolated to early use of the vehicle, Oshkosh began to investigate further. Oshkosh found that all related warranty claims involved reports of hydraulic power steering oil falling onto engine oil with no reports indicating an actual loss of steering assist while driving. On October 27, 2021, NHTSA contacted Oshkosh about whether it would be submitting a recall report related to this issue. Oshkosh’s investigation was already ongoing and on November 1, 2021, Oshkosh decided to initiate a safety recall to address vehicles in the field. Part 573 Safety Recall Report 21V-851 Page 3 The information contained in this report was submitted pursuant to 49 CFR §573 Description of Remedy : Description of Remedy Program : Oshkosh will provide customers with a list of serial numbers for the affected power steering pump parts and have customers inspect and replace if a suspect pump found. Oshkosh will provide customers with Instructions on how to inspect for affected pumps as well as instructions on how to install a new pump if pump replacement is needed. The replacement parts will be provided at no cost to customers and customers would also be reimbursed for labor costs. Customers can also choose to have a service center perform the inspection and repair work free of charge. How Remedy Component Differs from Recalled Component : The remedy component has been inspected by ZF and confirmed rotor flatness within their specifications. Identify How/When Recall Condition was Corrected in Production : According to the supplier, power steering pumps from ZF were measured and do not exhibit this issue after 07/23/20. No concerns have been reported on vehicles built with known good parts for rotor out of flatness specification. Recall Schedule : Description of Recall Schedule : Notifications to customers will be made via a customer letter. The 577 customer letter will be mailed pending NHTSA approval. Oshkosh does not distribute vehicles through dealers. Planned Dealer Notification Date : NR – NR Planned Owner Notification Date : DEC 13, 2021 – DEC 31, 2021 * NR – Not Reported

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OMB Control No.: 2127-0004 Part 573 Safety Recall Report 21V-851 The information contained in this report was submitted pursuant to 49 CFR §573 Manufacturer Name : Oshkosh Corporation Submission Date : NOV 02, 2021 NHTSA Recall No. : 21V-851 Manufacturer Recall No. : NR Manufacturer Information : Manufacturer Name : Oshkosh Corporation Address : 2307 Oregon Street PO Box 2566 Oshkosh WI 54903-2566 Company phone : 920-235-9151 Population : Number of potentially involved : 563 Estimated percentage with defect : 25 % Vehicle Information : Vehicle 1 : 2020-2021 Oshkosh S-Series Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : ALL Power Train : DIESEL Descriptive Information : The recall is based on vehicles equipped with certain power steering pumps supplied by ZF. The Oshkosh part number is A000H951. Production Dates : MAY 13, 2020 – MAR 23, 2021 VIN Range 1 : Begin : NR End : NR Not sequential Description of Defect : Description of the Defect : According to the recall report submitted by ZF, a machining defect on the internal pump rotor caused the rotor to be out of the specified flatness. This condition may cause the pressure to build and the steering shaft seal to leak, resulting in a loss of power steering assist. FMVSS 1 : NR FMVSS 2 : NR Description of the Safety Risk : A loss of power steering assist could increase the risk of a crash. Description of the Cause : NR Identification of Any Warning that can Occur : If a vehicle’ engine oil is over full, this may be a sign that of a failed pump shaft seal. Low hydraulic oil in the tank may be a sign of hydraulic oil moving past the pump shaft seal. Increased effort to steer the vehicle may be an indication of a failed steering pump. Involved Components : Part 573 Safety Recall Report 21V-851 Page 2 The information contained in this report was submitted pursuant to 49 CFR §573 Component Name 1 : Power steering pump Component Description : Power steering pump Component Part Number : A000H951 Supplier Identification : Component Manufacturer Name : ZF North America, Inc. Address : 800 Heath St Lafayette Indiana 47904 Country : United States Chronology : In August 2021, Oshkosh was contacted by its supplier, ZF, about a potential issue affecting certain power steering pumps. ZF noted that another OEM, Spartan Fire, had conducted a safety recall on a power steering pump with a similar part number. Oshkosh initiated an internal review of its experience with the power steering pump at issue and noted that while it had received a limited number of warranty claims, the majority of those claims involved failures that occurred within the first approximately five months of vehicle use. Based on this data and information from the supplier that any affected parts would have been isolated to within the first five months of vehicle use, it was believed that any issues with the power steering pumps in Oshkosh vehicles were isolated to early use of the vehicle and had already been addressed in the field. In late September 2021, Oshkosh received a report of two trucks that experienced a power steering pump failure. Upon further investigation, Oshkosh determined that these vehicles were approximately one year old at the time of the failure. Since the production date of these two vehicles fell well-outside of the timeline that suggested the parts issue was isolated to early use of the vehicle, Oshkosh began to investigate further. Oshkosh found that all related warranty claims involved reports of hydraulic power steering oil falling onto engine oil with no reports indicating an actual loss of steering assist while driving. On October 27, 2021, NHTSA contacted Oshkosh about whether it would be submitting a recall report related to this issue. Oshkosh’s investigation was already ongoing and on November 1, 2021, Oshkosh decided to initiate a safety recall to address vehicles in the field. Part 573 Safety Recall Report 21V-851 Page 3 The information contained in this report was submitted pursuant to 49 CFR §573 Description of Remedy : Description of Remedy Program : Oshkosh will provide customers with a list of serial numbers for the affected power steering pump parts and have customers inspect and replace if a suspect pump found. Oshkosh will provide customers with Instructions on how to inspect for affected pumps as well as instructions on how to install a new pump if pump replacement is needed. The replacement parts will be provided at no cost to customers and customers would also be reimbursed for labor costs. Customers can also choose to have a service center perform the inspection and repair work free of charge. How Remedy Component Differs from Recalled Component : The remedy component has been inspected by ZF and confirmed rotor flatness within their specifications. Identify How/When Recall Condition was Corrected in Production : According to the supplier, power steering pumps from ZF were measured and do not exhibit this issue after 07/23/20. No concerns have been reported on vehicles built with known good parts for rotor out of flatness specification. Recall Schedule : Description of Recall Schedule : Notifications to customers will be made via a customer letter. The 577 customer letter will be mailed pending NHTSA approval. Oshkosh does not distribute vehicles through dealers. Planned Dealer Notification Date : NR – NR Planned Owner Notification Date : NR – NR * NR – Not Reported

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