Steering Gear Assembled Incorrectly – 2022-2023 IC Bus CE School Buses

Dealers will inspect the steering gear serial numbers, and replace the steering gears as necessary, free of charge. Interim owner notification letters were mailed August 15, 2022. Remedy parts are expected to become available in mid-October 2022. Owners may contact Navistar customer service at 1-800-448-7825. Navistar’s number for this recall is 22514.

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SERVICE PROCEDURE SUBJECT: SAFETY RECALL 22514 October, 2022 Steering Gear on certain 2022 and 2023 IC Bus®CE school buses built 06/01/2021 through 06/07/2022 built with R.H. Sheppard M1 00P model steering gears. CUSTOMER LETTER Print ready (PDF file) copy of the Customer Letter DEFECT DESCRIPTION The steering gears may have been assembled with less than the required input shaft ball bearings and can result in a fracture of the input shaft and loss of steering. A loss of steering increases the risk of a vehicle crash. MODELS INVOLVED This safety recall involves certain 2022 and 2023 IC Bus® CE school buses built 06/01/2021 through 06/07/2022 built with R.H. Sheppard M100P model steering gears. ELIGIBILITY This procedure applies ONLY to vehicles marked in the International® Service Portal5M with Safety Recall 22514. Also complete any other open campaigns listed on the Service Portal at this time. PARTS INFORMATION NOTE: New buses in dealer inventory that are found to have a suspect steering gear, must be repaired using a steering gear for non – Delivered To User (DTU) vehicles and not a recall part number. NOTE: If your location has any steering gears in inventory, please refer to the R.H. Sheppard link later in this procedure to determine inventory steering gear status. VEHICLE RECALL 22514 © 2022 Navistar, Inc. All rights reserved. All marks are trademarks of their respective owners. 1 NOTE: Do not pre-order steering gears for inventory as only 1,600 of the 45,000 vehicles will require a replacement. Some customers may experience a higher SUSPECT percentage result. NOTE: Any suspect steering gear removed are required to be returned to Product Review Center per warranty standard procedures. See table at end of document for specific parts information. SERVICE PROCEDURE WARNING! To prevent personal mJury and / or death, or damage to property, park vehicle on hard flat surface, turn the engine off, set the parking brake and install wheel chocks to prevent the vehicle from moving in either direction. WARNING! To prevent personal injury and / or death, always wear safe eye protection when performing vehicle maintenance. WARNING! To prevent personal injury and / or death, or damage to property, allow engine/ vehicle components to cool before servicing. WARNING! To prevent personal injury and / or death, or damage to property, keep flames or sparks away from vehicle and do not smoke while servicing the vehicle’s batteries. Batteries expel explosive gases. STEERING GEAR INSPECTION 1. Park vehicle on flat surface. 2. Shift transmission to Park or Neutral and set parking brake. 3. Turn vehicle ignition to Key OFF position. 4. Install wheel chocks. 5. Unlatch and open hood to access steering gear. VEHICLE RECALL 22514 © 2022 Navistar, Inc. All rights reserved. All marks are trademarks of their respective owners. 2 2 3 0000475653 Figure 1. Gear Housing Sector Shaft Output 1. Part number 2. Gear housing sector shaft output 3. Serial number NOTE: The steering gear serial number is located on the steering gear housing at the bottom of the sector shaft outlet. The wheels may need to be turned for proper viewing. Additionally, a small portion of gears may have the serial number at the top of the sector shaft outlet. NOTE: The steering gear serial number is a two-digit year followed by an alpha numeric month – Example: 21 E (2021 May). NOTE: If the serial number and / or part number are illegible due to paint, a flat head screwdriver, wire brush, or emery cloth may be used to lightly remove paint where the numbers are located. 6. Record the entire steering gear serial number. Use the R.H. Sheppard link below to determine if the gear needs to be replaced. Sheppard Steering Gear Classification Tool (rhsheppard.com) VEHICLE RECALL 22514 © 2022 Navistar, Inc. All rights reserved. All marks are trademarks of their respective owners. 3 •. SHEPPARD Sheppard Steering Gear Classification Tool STOP!! – READ THIS BEFORE BEGINNING. Sheppard remanufa ctured steering_gears, slave gears ARE NOT affected by this recall. Refer to the Identification Guideline for identification of affected steering gears as well as interpretation of the serial and part number. Please select your vehicle make and enter the fu ll 8-character serial number before the dash(-) as shown below without any spaces or the “-C” at the end. SERIAL NUMBER EXAMPLE: 21 E07957-C .. …… ., …. _J I L.c . ,~,… . ye;:a r the steering 1n:, p ring1tyle1″”01eo~t1m1ha ~.llfW&lbuilL 11!1.inlll’dip (17’9$7 i$1ho$(1qUC1ntillL E nd~u tho mont”- tho 1e,l;l numMr lorge:ars a1eenn,ggo arwubult bl.l• th atmonth. (A• Jan,u;ary, Bsfebfw,ry, C•k’\Dri;.h.O•Aprl, E• Mly,OIC. ). NAVISTAR, INTERNATIONAL – 21 F1 2257 Search Reset Result St eerin•i Gear serial number: Good ,.,;.,, “” ba ,awm,d “/• w;,h ,o ‘””‘ . ., ,amody ,,.;,. 2 3 4 0000475655 Figure 2. Steering Gear Classification Tool 1. Select vehicle make 2. Result 3. Serial number search box 4. Search button a. Select Navistar, International from the Select Vehicle Make dropdown table (Figure 2, Item 1 ). b. Enter the serial number (Figure 2, Item 3) and select Search (Figure 2, Item 4). NOTE: Suspect serial numbers will have year/ month range of 21 C025XX through 22B041.XX. c. If the result is Good or Serial Number Entered Is Outside The Date Range, (Figure 2, Item 2), replacement is not required. Proceed to Step 23. d. If the result is Not Found (Figure 2, Item 2), follow instructions on R.H. Sheppard website. VEHICLE RECALL 22514 © 2022 Navistar, Inc. All rights reserved. All marks are trademarks of their respective owners. 4 e. If the result is Suspect (Figure 2, Item 2), the steering gear will require replacement. Proceed to Step 7. STEERING GEAR REPLACEMENT NOTE: Because the steering gear is suspect and has not failed, filter change and fluid flush are NOT included in steering gear replacement. For further reference, please refer to the link below: RH Sheppard Instructions for Installing Steering Gears 7. Place drain pan under vehicle. 8. Remove power steering return line from steering gear and drain fluid. 9. Disconnect power steering pressure line from steering gear. NOTE: Do not rotate steering wheel once the intermediate shaft has been disconnected from the steering gear. 10. Remove pinch bolt and nut from steering gear input shaft and disconnect steering column. Discard pinch bolt, nut, and washers. 11. Remove cotter pin and castellated nut from drag link and disconnect drag link from pitman arm. Discard cotter pin. 12. Support steering gear and remove steering gear mounting bolts and nuts. Save bolts and nuts for reuse. NOTE: Record the clocking of both hydraulic fittings and pitman arm necessary for them to be correctly installed on new steering gear. 13. With the steering gear on a clean work bench, transfer the hydraulic fittings and align the timing marks when installing the pitman arm to new steering gear. 14. Position new steering gear into place and install mounting bolts. Using a torque wrench, tighten bolts to 210 – 240 lb-ft (284 – 325 N·m). 15. Reconnect drag link to pitman arm, install castellated nut, tighten nut to 120 -170 lb-ft (163 – 230 N·m), and install new cotter pin. NOTE: The pitman arm to steering gear bolt should be tightened to torque value stamped on face of retainer. VEHICLE RECALL 22514 © 2022 Navistar, Inc. All rights reserved. All marks are trademarks of their respective owners. 5 16. Torque pitman arm retainer to torque value stamped onto face of retainer. If two notches of locking washer do not align with notches in the retainer continue tightening the retainer until they align. Bend retaining tabs into the notches of the retainer. 17. Reconnect steering column shaft to steering gear input shaft, install new pinch bolt, washers, and nut. Using a torque wrench, tighten bolt to 68 – 76 lb-ft. (92 – 103 N·m). 18. Install power steering pressure and return lines. Tighten pressure line fitting and return line hose clamp. 19. Fill power steering reservoir. 20. Start engine, bleed system, and inspect for leaks. CAUTION! Failure to set the adjust of the relief plungers may result in damage to the steering system. Plunger must be set or adjusted whenever a steering gear is replaced. 21. Set the AUTO relief plungers or adjust the manual relief plungers to obtain the proper wheel cut. 22. Turn vehicle ignition to Key OFF position. 23. Top off power steering fluid. 24. Close and latch hood. 25. Remove wheel chocks. END OF SERVICE PROCEDURE LABOR INFORMATION Operation Number Description A40-22514-1 Inspection Only; gear is GOOD A40-22514-2 Inspect Gear; gear is SUSPECT A40-22514-3 Replace Steering Gear VEHICLE RECALL 22514 Time 0.3 hrs 0.3 hrs 1.1 hrs © 2022 Navistar, Inc. All rights reserved. All marks are trademarks of their respective owners. 6 PARTS INFORMATION Part Number Part Description Quantity Appropriate Fluid P/N Fluid; Power Steering As needed if gear is by Vehicle replaced 4065729C1 Bolt, Hex HD, 7/16-20 UNF Grade 8 1 if gear is replaced 4066697C1 Nut, Hex Lock, 7/16-20, Grade 8 1 if gear is replaced 25846R1 Washer; 7/16 Hardened 2 if gear is replaced 137214 Pin; Cotter 1/8 X 1 3/4 Inch Lg. 1 if gear is replaced NOTE: Using the International Parts System, verify the steering gear part number that the vehicle was built with. Using the correct part number refer to the table below to determine the correct steering gear part number to order. NOTE: Submit all steering gear orders as a Critical Order – Unit Down with VIN number. NOTE: If a Steering Gear for vehicles without a DTU date is used on a vehicle with a DTU date, the parts cost will be adjusted to the Recall Part Number. Production Steering Gear Steering Gear for Steering Gear PN Description Non-DTU Buses 3554373C91 M100PMT3 3554373C91 3554374C91 M100PMR4 3554374C91 CAMPAIGN IDENTIFICATION LABEL Each vehicle corrected in accordance with this campaign must be marked with a CTS-1075 Campaign Identification Label. Complete the label and attach on a clean surface next to the vehicle identification number (VIN) plate. VEHICLE RECALL 22514 Recall Steering Gear for all buses that are sold 8900303R91 8900308R91 COMPLETED Service Location Code # © 2022 Navistar, Inc. All rights reserved. All marks are trademarks of their respective owners. 7 ADMINISTRATIVE / DEALER RESPONSIBILITIES WARRANTY CLAIMS Warranty claim expense is to be charged to Warranty. Claims are to be submitted in the normal manner, making reference to Safety Recall 22514. Section 7 of the Warranty Policy and Procedures Manual contains further information related to the submission and processing of AFC / Recall claims. As with all claim submissions, items acquired locally must be submitted in the “Other Charges” tab. The cost of any bulk items (such as a bag of cable tie straps, roll of wire, barrel of oil, or tube of silicone) should be prorated for the cost of the individual pieces/ amount used during each repair. GROUP GROUP – Enter n umber NOUN – Leave b lank ::: +– I – C (CAUSE) – Ente r either 1, 2, 3. (See below) 1. Inspected (No repair required). 2. Inspected and repaired. 3. Defective part from parts stock. – arranty Code) Enter 40. — I WARRANTY – (W TYPE PART – En PAD-Enter ‘K)() ter P for type part causing failure. — UNITED STATES AND POSSESSIONS I – ~ NOUN C WARR. TP PAD I I I I 0000047910 The National Traffic and Motor Vehicle Safety Act, as amended, provides that each vehicle that is subject to a vehicle recall campaign must be adequately repaired within a reasonable time after the owner has tendered it for repair. A failure to adequately repair within 60 days after a tender of a vehicle is prima facie evidence of failure to repair within a reasonable time. If the condition is not adequately repaired within 60 days, the owner may be entitled to replacement with an identical or reasonable equivalent vehicle at no charge, or to a refund of the purchase price less a reasonable allowance for depreciation. Dealers must correct all vehicles subject to this campaign at no charge to the owner, regardless of mileage, age of vehicle, or ownership, from this time forward. VEHICLE RECALL 22514 © 2022 Navistar, Inc. All rights reserved. All marks are trademarks of their respective owners. 8 Dealers should proceed immediately to make necessary correction to units in inventory. All inventory vehicles subject to this recall campaign must be corrected prior to sale, transfer or delivery. If vehicles have been sold or transferred and you are in receipt of Customer Notification Letters and Authorization for Recall Service cards for those vehicles, the transfer location or customer must be notified immediately from your dealer location. Dealers must make every effort to promptly schedule an appointment with each owner to repair his or her vehicle as soon as possible. However, consistent with the customer notification, dealers are expected to complete the repairs on the mutually agreed upon service date. Dealers involved in the recall process will be furnished a listing of owner names and addresses to enable them to follow up with owners and have the vehicles corrected. Use of this listing must be limited to this campaign because the list may contain information obtained from state motor vehicle registration records, and the use of such motor vehicle registration data for purposes other than this campaign is a violation of law in several states. CANADA Dealers must correct all vehicles subject to this campaign at no charge to the owner, regardless of mileage, age of vehicle, or ownership, from this time forward. Dealers should proceed immediately to make necessary correction to units in inventory. All inventory vehicles subject to this recall campaign must be corrected prior to sale, transfer or delivery. If vehicles have been sold or transferred and you are in receipt of Customer Notification Letters and Authorization for Recall Service cards for those vehicles, the transfer location or customer must be notified immediately from your dealer location. Dealers must make every effort to promptly schedule an appointment with each owner to repair his or her vehicle as soon as possible. However, consistent with the customer notification, dealers are expected to complete the repairs on the mutually agreed upon service date. Dealers involved in the recall process will be furnished a listing of owner names and addresses to enable them to follow up with owners and have the vehicles corrected. Use of this listing must be limited to this campaign because the list may contain information obtained from state motor vehicle registration records, and the use of such motor vehicle registration data for purposes other than this campaign is a violation of law in several states. VEHICLE RECALL 22514 © 2022 Navistar, Inc. All rights reserved. All marks are trademarks of their respective owners. 9 EXPORT Export Distributors should proceed immediately to make necessary correction to units in inventory. All inventory vehicles subject to this recall campaign must be corrected prior to sale, transfer or delivery. If vehicles have been sold or transferred and you are in receipt of Customer Notification Letters and Authorization for Recall Service cards for those vehicles, the transfer location or customer must be notified immediately from your distributor location. Export Distributors are to submit warranty claims in the usual manner making reference to this recall number. Export Distributors are expected to provide full cooperation and follow-up with respect to this important subject matter. If you have any questions or need further assistance, please contact the Regional Service Manager at your regional office. NAVISTAR, INC. VEHICLE RECALL 22514 © 2022 Navistar, Inc. All rights reserved. All marks are trademarks of their respective owners. 10

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A IMWSI.IR COMPANY IC Bus, LLC 2701 Navistar Drive Lisle, IL 60532 USA navistar.com IMPORTANT SAFETY RECALL 22514 INTERIM NOTICE NHTSA RECALL NO. 22V-429 This notice applies to your vehicle identified on the enclosed card. Dear IC Bus Customer, This notice is sent to you in accordance with the requirements of the National Traffic and Motor Vehicle Safety Act. IC Bus has decided that a defect which relates to motor vehicle safety exists in certain 2022 and 2023 CE school bus models built 06/01/2021 thru 06/07/2022 with R. H. Sheppard HD94E, M100P, M110P, HD94P, XD120P, MD83P, SD110P, M83P, M90P, or M80P model steering gears. REASON FOR THIS RECALL The steering gears may have been assembled with less than the required input shaft ball bearings and can result in a fracture of the input shaft and loss of steering. RISK TO MOTOR VEHICLE SAFETY A loss of steering increases the risk of a vehicle crash. DEFECT REMEDY A final remedy has been determined. Parts have been ordered and wilt be available in mid-October. When parts become available, you will be notified of additional actions you should take. ACTIONS YOU SHOULD TAKE IN THE INTERIM To minimize the potential occurrence of this defect in the interim period, please keep low speed high effort maneuvers to a minimum. If you are the lessor of this vehicle, please forward a copy of this notice to the lessee within ten days to comply with federal regulations. [Ml£□ Cbrn@ AUG 1 5 2022 CCI.,,,,,, A • By: •••• ,.-,/.~✓–d.~~” IF YOU NEED ASSISTANCE AUGUST2022 IC Bus requests your prompt attention and patience regarding the correction of this defect and apologizes for any inconvenience this may cause you. IC Bus, LLC

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IC Bus, LLC 2701 Navistar Drive Lisle, IL 60532 USA navistar.com IMPORTANT SAFETY RECALL 22514 NHTSA RECALL NO. 22V-429 This notice applies to your vehicle identified on the enclosed card. NOVEMBER 2022 Dear IC Bus Customer, This notice is sent to you in accordance with the requirements of the National Traffic and Motor Vehicle Safety Act. IC Bus has decided that a defect which relates to motor vehicle safety exists in certain 2022 and 2023 CE school bus models built 06/01/2021 thru 06/07/2022 with R. H. Sheppard HD94E, M100P, M110P, HD94P, XD120P, MD83P, SD110P, M83P, M90P, or M80P model steering gears. REASON FOR THIS RECALL The steering gears may have been assembled with less than the required input shaft ball bearings and can result in a fracture of the input shaft and loss of steering. RISK TO MOTOR VEHICLE SAFETY A loss of steering increases the risk of a vehicle crash. DEFECT REMEDY The repair will involve replacing steering gears found with a suspect serial number. Dealers have parts and instructions to repair your vehicle. The repair will be performed free of charge and take approximately 30 minutes to 1 hour and 30 minutes to complete. ACTIONS YOU SHOULD TAKE If you own this vehicle, please schedule an appointment with any IC Bus dealer to have your vehicle repaired. You can find your nearest dealer by using the dealer locator at http://www.icbus.com or by calling 1-800-448-7825. If you have already paid for repairs prior to this notice that corrected the defect, you may be eligible for reimbursement of certain repair expenses if they occurred 06/16/2021 thru 12/01/2022. Present your original repair paperwork and proof of payment to any IC Bus dealer and your eligibility will be reviewed. You may also submit a claim using the enclosed Request for Reimbursement card. If you are the lessor of this vehicle, please forward a copy of this notice to the lessee within ten days to comply with federal regulations. If you do not own this vehicle, please fill out and return mail the enclosed card so that you will not be contacted again about this recall. IF YOU NEED ASSISTANCE If you believe that IC Bus has failed to remedy the defect without charge or within a reasonable time, please follow the procedure described in the Owner Assistance Guide section in your Owner’s Manual or call toll free 1-800-448- 7825. You may also submit a complaint to the Administrator, National Highway Traffic Safety Administration, 1200 New Jersey Ave, SE, Washington, DC 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. IC Bus requests your prompt attention and patience regarding the correction of this defect and apologizes for any inconvenience this may cause you. IC Bus, LLC

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OMB Control No.: 2127-0004 Part 573 Safety Recall Report 22V-429 The information contained in this report was submitted pursuant to 49 CFR §573 Manufacturer Name : Navistar, Inc. Submission Date : JUN 16, 2022 NHTSA Recall No. : 22V-429 Manufacturer Recall No. : 22514 Manufacturer Information : Manufacturer Name : Navistar, Inc. Address : 2701 Navistar Drive Lisle IL 60532 Company phone : 331-332-1590 Population : Number of potentially involved : 3,570 Estimated percentage with defect : 1 % Vehicle Information : Vehicle 1 : 2022-2023 IC CE School bus Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : OTHER Power Train : DIESEL Descriptive Information : • The suspect population is identified by models equipped with R. H. Sheppard HD94E, M100P, M110P, HD94P, XD120P, MD83P, SD110P, M83P, M90P, and M80P model steering gears. The inclusive dates of manufacture were determined by when Navistar manufacturing received steering gears with suspect serial numbers through the time the issue was contained in manufacturing. • The vehicles in the suspect population may have been built with steering gears with suspect serial numbers and all other similar vehicles were not. There are 3,570 CE school buses in the suspect population Production Dates : JUN 01, 2021 – JUN 07, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Description of Defect : Description of the Defect : As reported by R. H. Sheppard Co., Inc. in 22E-047, steering gears were assembled with fewer than the required number of recirculating balls which can lead to a fracture in the steering gear worm-shaft and loss of vehicle steering. FMVSS 1 : NR FMVSS 2 : NR Description of the Safety Risk : As reported by R. H. Sheppard Co., Inc in 22E-047, a steering gear with fewer than the required number of recirculating balls may bind when loads are applied. In some cases, the balls may align on the same side of the gear’s worm-shaft and concentrated loads may cause the gear’s internal parts to fracture resulting in loss of vehicle steering. Loss of steering increases the Part 573 Safety Recall Report 22V-429 Page 2 The information contained in this report was submitted pursuant to 49 CFR §573 likelihood of a crash. Description of the Cause : As reported by R. H. Sheppard Co., Inc in 22E-047, an anomaly in the steering gear recirculating ball insertion operation occurred during assembly. Subsequent rework processes and inspections did not detect the missing recirculating balls. Identification of Any Warning that can Occur : As reported by R. H. Sheppard Co., Inc in 22E-047, the internal fracture, the steering may be perceived as strained by the driver. No audible or visual warning is available. Involved Components : Component Name 1 : Steering gear Component Description : Steering gear Component Part Number : Various Supplier Identification : Component Manufacturer Name : Bendix Commercial Vehicle Systems LLC Address : 35500 Chester Rd. Avon Ohio 44011 Country : United States Chronology : • 05/23/2022 – RH Sheppard notifies Navistar they have filed a 573 report to NHTSA related to several steering gear models. • 05/25/2022 – RH Sheppard meets with Navistar Compliance, Engineering, and Quality to determine the impact to International trucks and IC buses; determine failure mode and potential root cause. • 06/01/2022 – Navistar Compliance and Engineering narrow the scope of vehicle configurations built with potential suspect steering gears. • 06/02/2022 – Navistar Compliance Committee meets to discuss initial suspect population, potential root cause and failure mode. The Committee outlines next steps necessary to contain and inspect suspect vehicles and inventory at Navistar’s Parts Distribution Centers (PDCs). • 06/08/2022 – Navistar quarantines 4,952 vehicles at their assembly plants for inspection and 85 steering gears were placed on quality hold at the PDCs. • 06/09/2022 – Bendix provides Navistar a list of 1,590 suspect steering gear serial numbers that they believe may contain a smaller than normal number of recirculating balls. Part 573 Safety Recall Report 22V-429 Page 3 The information contained in this report was submitted pursuant to 49 CFR §573 • 06/09/2022 – Navistar Compliance Committee meets to determine final suspect population, review suspect steering gear serial numbers, potential field remedy, and declares a Safety Recall. Description of Remedy : Description of Remedy Program : • The remedy will involve replacing any steering gear found with a suspect serial number. • Navistar’s plan for reimbursement of pre-notification remedies, on file with NHTSA and dated 05/06/2022, applies and reimbursement instructions will be included in the customer notification. How Remedy Component Differs from Recalled Component : The remedy steering gears were assembled with the correct number of recirculating balls where the recalled steering gears may not have been. Identify How/When Recall Condition was Corrected in Production : 06/08/2022 – Navistar manufacturing quarantined all vehicles at our manufacturing plants and began inspections of all steering gears for suspect serial numbers. This will be updated once the inspections have been completed. Additionally, the PDCs placed a stop ship on steering gears at the PDCs and began returning them to R. H. Sheppard for inspection to be certified. Recall Schedule : Description of Recall Schedule : It is estimated that the Customer and Dealer notification letters will be mailed by 08/18/2022. Planned Dealer Notification Date : AUG 18, 2022 – AUG 18, 2022 Planned Owner Notification Date : AUG 18, 2022 – AUG 18, 2022 * NR – Not Reported

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