22PBL HMX Tracking Rod Bracket – 2015-2023 Peterbilt 320 & 520 Refuse Trucks

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<BULLETIN DRAFT> No. 22PBL Page 1 of 13 Recall – 22PBL M320_520 HMX Tracking Rod Bracket: NHTSA #22V939, TC #2022-XXX Author: Darrell Cook 12/21/2022 Title (metadata) 22PBL: 22PBL M320_520 HMX Tracking Rod Bracket: NHTSA #22V939, TC #2022-XXX Description M320_520 HMX Tracking Rod Bracket Bulletin No. 22PBL Bulletin Category Field Service Supplier (Recall Only) Image Service Subject 22PBL M320_520 HMX Tracking Rod Bracket: NHTSA #22V939, TC #2022-XXX Section Suspension – 16 What’s New Abstract Safety Recall – Peterbilt is seeing failures on the Model 320 and Model 520 tracking rod brackets with Hendrickson HAULMAAX/EX suspensions in refuse operations. The tracking rod brackets may become detached from the axle. If this happens the axle loses its primary lateral stability, which may increase the risk of a crash. There is no warning preceding the failure of these components. Revision Condition / Chief Complaint Most failures occur on the forward drive axle tracking rod bracket where it is welded to the axle housing. Contributing factors include specific customer high load duty cycles and weld quality. 22PBL M320_520 HMX Tracking Rod Bracket: NHTSA #22V939, TC #2022-XXX 22PBL Page 2 of 13 Chassis Affected PB – 16,033 (15,658 US / 375 Canada) Model Year 2015-2022 model 320, and 520 chassis built from January 1, 2014, through November 30, of 2022 equipped with a HAULMAAX/EX suspension. Service Action Campaign Service all affected chassis that enter your dealership, even if the customer has no issue with the chassis. 1. Review the attached chassis list for your dealer code and schedule your customer(s) for service if their chassis is on the list. 2. In Service Management, select Campaign 22PBL to add it to the case. If the unit is released back into service without performing the repair, make sure to also release the Campaign in Service Management. 3. If you are not using Service Management to start repair orders, review SIR for “Complete” or “In Process” next to the “22PBL” campaign code prior to performing this repair. 4. Follow the procedures to improve the weld quality and add an additional bracket if needed. Warranty There is no time or mileage limit for this recall. Peterbilt will pay for parts at dealer net plus applicable mark up and labor: ALL vehicles within this recall will need to have the Track Rod Bracket Inspection Procedure AND Track Rod Bracket Reinforcement Procedure performed. However, the Track Rod Bracket Repair Procedure is only performed if the Track Rod Bracket weld is found to be cracked. The following 5 quick claims are to be used based on the Track Rod Reinforcement Bracket needed AND IF the Track Rod Bracket weld IS found to be cracked. • 3 hours labor to perform Track Rod Bracket Inspection Procedure, Track Rod Bracket Repair Procedure, and Track Rod Bracket Reinforcement Procedure IF Track Rod Bracket weld is found to be cracked. Use Quick 22PBL M320_520 HMX Tracking Rod Bracket: NHTSA #22V939, TC #2022-XXX 22PBL Page 3 of 13 Claim Code 22PBLA if using C77-6012 reinforcement bracket is used. • 3 hours labor to perform Track Rod Bracket Inspection Procedure, Track Rod Bracket Repair Procedure, and Track Rod Bracket Reinforcement Procedure IF Track Rod Bracket weld is found to be cracked. Use Quick Claim Code 22PBLB if using C77-6015 reinforcement bracket. • 3 hours labor to perform Track Rod Bracket Inspection Procedure, Track Rod Bracket Repair Procedure, and Track Rod Bracket Reinforcement Procedure IF Track Rod Bracket weld is found to be cracked. Use Quick Claim Code 22PBLC if using C77-6016 reinforcement bracket. • 3 hours labor to perform Track Rod Bracket Inspection Procedure, Track Rod Bracket Repair Procedure, and Track Rod Bracket Reinforcement Procedure IF Track Rod Bracket weld is found to be cracked. Use Quick Claim Code 22PBLD if using C77-6021-001 reinforcement bracket. • 3 hours labor to perform Track Rod Bracket Inspection Procedure, Track Rod Bracket Repair Procedure, and Track Rod Bracket Reinforcement Procedure IF Track Rod Bracket weld is found to be cracked. Use Quick Claim Code 22PBLE if using C77-6021-002 reinforcement bracket. The following 5 quick claims are to be used based on the Track Rod Reinforcement Bracket needed AND the Track Rod Bracket weld is NOT found to be cracked. • 2 hours labor to perform Track Rod Bracket Inspection Procedure, and Track Rod Bracket Reinforcement Procedure IF Track Rod Bracket weld is NOT found to be cracked. Use Quick Claim Code 22PBLF if using C77-6012 reinforcement bracket. • 2 hours labor to perform Track Rod Bracket Inspection Procedure, and Track Rod Bracket Reinforcement Procedure IF Track Rod Bracket weld is NOT found to be cracked. Use Quick Claim Code 22PBLG if using C77-6015 reinforcement bracket. 22PBL M320_520 HMX Tracking Rod Bracket: NHTSA #22V939, TC #2022-XXX 22PBL Page 4 of 13 • 2 hours labor to perform Track Rod Bracket Inspection Procedure, and Track Rod Bracket Reinforcement Procedure IF Track Rod Bracket weld is NOT found to be cracked. Use Quick Claim Code 22PBLH if using C77-6016 reinforcement bracket. • 2 hours labor to perform Track Rod Bracket Inspection Procedure, and Track Rod Bracket Reinforcement Procedure IF Track Rod Bracket weld is NOT found to be cracked. Use Quick Claim Code 22PBLJ if using C77-6021-001 reinforcement bracket. • 2 hours labor to perform Track Rod Bracket Inspection Procedure, and Track Rod Bracket Reinforcement Procedure IF Track Rod Bracket weld is NOT found to be cracked. Use Quick Claim Code 22PBLK if using C77-6021-002 reinforcement bracket. PRWS CLAIM CODING Campaign Code: 22PBL Campaign Type Field Repair Claim Category: Truck Repair Type Proactive Customer Concern Code 007 Causal Code 14 Corrective Action Code 21 Responsibility Code: Camp Failure Location 016-005-029 Causal Part 03-06233M001 Supplier Code SRT Code • B22-PLA 3 hours labor to perform Track Rod Bracket Inspection Procedure, 22PBL M320_520 HMX Tracking Rod Bracket: NHTSA #22V939, TC #2022-XXX 22PBL Page 5 of 13 Track Rod Bracket Repair Procedure, and Track Rod Bracket Reinforcement Procedure IF Track Rod Bracket weld is found to be cracked during the Inspection procedure. Use Quick Claim Code 22PBLA if using C77-6012 reinforcement bracket is used. Supplier Code SRT Code • B22-PLB 3 hours labor to perform Track Rod Bracket Inspection Procedure, Track Rod Bracket Repair Procedure, and Track Rod Bracket Reinforcement Procedure IF Track Rod Bracket weld 22PBL M320_520 HMX Tracking Rod Bracket: NHTSA #22V939, TC #2022-XXX 22PBL Page 6 of 13 is found to be cracked during the Inspection procedure. Use Quick Claim Code 22PBLB if using C77-6015 reinforcement bracket is used. • B22-PLC 3 hours labor to perform Track Rod Bracket Inspection Procedure, Track Rod Bracket Repair Procedure, and Track Rod Bracket Reinforcement Procedure IF Track Rod Bracket weld is found to be cracked during the Inspection procedure. Use Quick Claim Code 22PBLC if using C77-6016 22PBL M320_520 HMX Tracking Rod Bracket: NHTSA #22V939, TC #2022-XXX 22PBL Page 7 of 13 reinforcement bracket is used. • B22-PLD 3 hours labor to perform Track Rod Bracket Inspection Procedure, Track Rod Bracket Repair Procedure, and Track Rod Bracket Reinforcement Procedure IF Track Rod Bracket weld is found to be cracked during the Inspection procedure. Use Quick Claim Code 22PBLD if using C77-6021-001 reinforcement bracket is used. 22PBL M320_520 HMX Tracking Rod Bracket: NHTSA #22V939, TC #2022-XXX 22PBL Page 8 of 13 • B22-PLE 3 hours labor to perform Track Rod Bracket Inspection Procedure, Track Rod Bracket Repair Procedure, and Track Rod Bracket Reinforcement Procedure IF Track Rod Bracket weld is found to be cracked during the Inspection procedure. Use Quick Claim Code 22PBLE if using C77-6021-002 reinforcement bracket is used. • B22-PLF 2 hours labor to perform Track Rod Bracket Inspection Procedure, and Track Rod Bracket Reinforcement Procedure IF 22PBL M320_520 HMX Tracking Rod Bracket: NHTSA #22V939, TC #2022-XXX 22PBL Page 9 of 13 Track Rod Bracket weld is NOT found to be cracked during the Inspection procedure. Use Quick Claim Code 22PBLF if using C77-6012 reinforcement bracket. • B22-PLG 2 hours labor to perform Track Rod Bracket Inspection Procedure, and Track Rod Bracket Reinforcement Procedure IF Track Rod Bracket weld is NOT found to be cracked during the Inspection procedure. Use Quick Claim Code 22PBLG if using C77-6015 reinforcement bracket. 22PBL M320_520 HMX Tracking Rod Bracket: NHTSA #22V939, TC #2022-XXX 22PBL Page 10 of 13 • B22-PLH 2 hours labor to perform Track Rod Bracket Inspection Procedure, and Track Rod Bracket Reinforcement Procedure IF Track Rod Bracket weld is NOT found to be cracked during the Inspection procedure. Use Quick Claim Code 22PBLH if using C77-6016 reinforcement bracket. • B22-PLJ 2 hours labor to perform Track Rod Bracket Inspection Procedure, and Track Rod Bracket Reinforcement Procedure IF Track Rod Bracket weld is NOT found to be cracked during the 22PBL M320_520 HMX Tracking Rod Bracket: NHTSA #22V939, TC #2022-XXX 22PBL Page 11 of 13 Inspection procedure. Use Quick Claim Code 22PBLJ if using C77-6021-001 reinforcement bracket. • B22-PLK 2 hours labor to perform Track Rod Bracket Inspection Procedure, and Track Rod Bracket Reinforcement Procedure IF Track Rod Bracket weld is NOT found to be cracked during the Inspection procedure. Use Quick Claim Code 22PBLK if using C77-6021-002 reinforcement bracket. Display in SIR Only visible when completed Editable by dealer? No 22PBL M320_520 HMX Tracking Rod Bracket: NHTSA #22V939, TC #2022-XXX 22PBL Page 12 of 13 KW AutoPay Choose an item. PB AutoPay Yes Parts Quantity Part Number Description 1 Magnaflux Spotcheck Dye Penetrant kit As Needed Source Locally Lint free shop towels 1 Source Locally Epoxy Primer 1 Source locally Axalta Imron Paint *1 Part Varies Reinforcement Bracket As Needed Source Locally Masking Tape 1 Source Locally Inter-axle driveline bolt and strap kit per driveline manufacturer. ^1 03-06233M001 Track Rod Bracket (FWD-REAR) ^1 03-06232M001 Track Rod Bracket (REAR-REAR) ^1 08-01498 Routing Clip ^1 20-09700 U-nut *Reinforcement Brackets are needed per the following: • C77-6012 required if unit has torque rod bracket C11-6025 • C77-6015 required if unit has torque rod bracket C11-6027 • C77-6016 required if unit has torque rod bracket C11-6026 • C77-6021-001 required if unit has torque rod bracket C11-6027 and Dana DSX4X Drive Axles • C77-6021-002 required if unit has torque rod bracket C11-6027 and Meritor MT4X-14X Drive Axles ^These parts are only needed if the Track Rod Bracket Repair Procedure is needed IF the Track Rod Bracket weld is found to be cracked during the Inspection Procedure. Background Procedure Please follow your dealership’s safety procedures and precautions to ensure the vehicle can be safely repaired and maintained. See attached procedure in Links section. 22PBL M320_520 HMX Tracking Rod Bracket: NHTSA #22V939, TC #2022-XXX 22PBL Page 13 of 13 Links Dealer\Chassis List Procedure U.S. Customer Letter Canada English Customer Letter Canada French Customer Letter Channels KWUS ☐ KWCA☐ KWGS☐ PBUS☒ PBCA☒ Same bulletin published to KW & PB regions? No Publish On Click or tap to enter a date.

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OMB Control No.: 2127-0004 Part 573 Safety Recall Report 22V-939 The information contained in this report was submitted pursuant to 49 CFR §573 Manufacturer Name : PACCAR Incorporated Submission Date : DEC 16, 2022 NHTSA Recall No. : 22V-939 Manufacturer Recall No. : 22PBL Manufacturer Information : Manufacturer Name : PACCAR Incorporated Address : 777 106TH AVENUE NORTHEAST BELLEVUE WA 98004 Company phone : 940 591 4220 Population : Number of potentially involved : 15,658 Estimated percentage with defect : 4 % Vehicle Information : Vehicle 1 : 2015-2023 Peterbilt Models 320 & 520 Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : OTHER Power Train : DIESEL Descriptive Information : -All models 320/520 vehicles with Hendrickson HMX suspensions and in refuse applications, built within the above production dates. – Recalled components do not have additional bracket support. – 15,658 total vehicles affected (4,215 Model 320’s and 11,818 Model 520’s) Production Dates : JAN 01, 2014 – NOV 30, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Description of Defect : Description of the Defect : Peterbilt is seeing failures on the Model 320 and Model 520 tracking rod brackets with Hendrickson HAULMAAX/EX suspensions in refuse operations. The majority of failures occur on the forward drive axle tracking rod bracket where it is welded to the axle housing. FMVSS 1 : NR FMVSS 2 : NR Description of the Safety Risk : Tracking rod brackets may become detached from the axle. If this happens the axle loses its primary lateral stability and may increase the risk of a crash. Description of the Cause : Contributing factors include specific customer high load duty cycles and weld quality. Identification of Any Warning that can Occur : No prior warning Involved Components : Part 573 Safety Recall Report 22V-939 Page 2 The information contained in this report was submitted pursuant to 49 CFR §573 Component Name 1 : Bracket, Tracking Rod Component Description : Tracking Rod Bracket Welded to Rear Axle Housing Component Part Number : 03-06233M001 Supplier Identification : Component Manufacturer Name : Peterbilt Motors Company Address : 1700 Woodbrook St. Denton Texas 76205 Country : United States Chronology : 7/27/2021 – Safety & Compliance notified of a rollover in Houston, TX (chassis 100009, truck built 11/13/2014). Truck had a previous repair to the track rod bracket and axle housing with an unknown process/welder. Investigation by engineering and manufacturing of weld processes at plants. 8/16/2021 – Inspection and repair procedure drafts began internal review. 8/21/2021 – Notified of a rollover in Detroit (Chassis 173523, truck build date 7/15/2016). No pictures or parts were provided nor potential cause of incident. 10/15/2021 – Model 520 SRT truck weld inspection trial with dye penetrant conducted at Denton plant. 11/23/2021 to 4/7/2022 – Engineering worked with Rush dealer group on weld procedure, inspection and repair with service techs. 12/16/2021 – Notified NHTSA of this issue being investigated. 3/24/2022 – Update given to NHTSA 3/30/2022 – Notified of rollover in Denver (Chassis 174470, truck build date 1/13/2017) 4/5/2022 through end of 2022 – PACCAR Technical Center (PTC) testing initiated. Testing continued on current production and addition of “Wrench” reinforcement variations. A Second test stand was built to run more tests concurrently. 7/9/2022 – Customer data collection initiated 7/14/2022 – Update given to NHTSA Part 573 Safety Recall Report 22V-939 Page 3 The information contained in this report was submitted pursuant to 49 CFR §573 8/18/2022 – Updated inspection procedure 9/14/2022 – Draft of a reinforcement installation procedure provided to field service and Rush dealer group. “Wrench” reinforcement bracket installed at Rush Phoenix after continued testing at PTC. 10/11/2022 – Updated given to Safety Committee 10/20/2022 – Update on issue given to NHTSA 11/16/2022 – “Wrench” reinforcement production part installed in plant. 11/28/2022 – “Shorty” reinforcement production part installed in plant for other height variation 12/13/2022 – Safety Committee meeting Description of Remedy : Description of Remedy Program : Paccar will notify owners, and dealers will inspect welds on affected vehicles and add an additional bracket to shore up support between the tracking rod bracket and the axle housing. Owners who incurred costs to obtain a remedy for the problem addressed in the recall in advance of receiving notification may seek reimbursement through the process outlined in the general reimbursement plan on file. How Remedy Component Differs from Recalled Component : Recalled components do not have additional bracket support. Identify How/When Recall Condition was Corrected in Production : An additional support bracket is welded between the tracking rod bracket and axle housing. This bracket was put into full production 11/30/2022. Recall Schedule : Description of Recall Schedule : Customers will be notified within 60 days. Planned Dealer Notification Date : FEB 14, 2023 – FEB 14, 2023 Planned Owner Notification Date : FEB 14, 2023 – FEB 14, 2023 * NR – Not Reported

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Our records indicate that these vehicles are affected by 22PBL and are owned by Subject: Safety Recall: 22PBL – M320_520 HMX Tracking Rod Bracket NHTSA: #22V939 EXPIRATION DATE: NONE This notice applies to your vehicle. Your VIN(s) can be found on the bottom or back of this page. Dear Peterbilt Customer, This notice is sent to you in accordance with the National Traffic and Motor Vehicle Safety Act. Peterbilt has decided that a defect which relates to motor vehicle safety exists in certain 2015 – 2022 Model Year 320 and 520 vehicles built during 01/01/2014 through 11/30/2022 and equipped with a HAULMAAX/EX suspension. Certain tracking rod brackets in refuse operations may detach from the axle without warning. This can cause the axle to lose its primary lateral stability, which may increase the risk of a crash. What is the problem? Certain tracking rod brackets in refuse operations may detach from the axle. What will your dealer do? Inspect and repair of tracking rod bracket if the weld is found to be cracked. Also, the tracking rod bracket will be reinforced during the repair process. What should you do? Contact your Peterbilt dealer to schedule an appointment for repair. Peterbilt Motors Company has initiated this recall to remedy the issue at no charge to you. Your dealer will inspect and repair the tracking rod bracket if the weld is found to be cracked. Also, the tracking rod bracket will be reinforced during the repair process. Please contact your Peterbilt dealer to schedule an appointment for these services. To find your Peterbilt dealer, please visit the Dealer Locator at www.Peterbilt.com or scan the QR code. When contacting your Peterbilt dealer, reference the Safety Recall number and the NHTSA number. This repair may take up to 6 hours of labor depending on dealer scheduling. If you require further information about this recall, reimbursement of a pre-notification remedy associated with this recall, or experience any difficulty in making arrangements for this repair, please contact: Peterbilt Motors Company, 1700 Woodbrook St, Denton, TX 76205, Attn: Customer Experience Department. If you conclude that Peterbilt has not enabled you to remedy this defect in a reasonable time and without charge, you may submit a complaint to: Administrator, National Highway Traffic Safety Administration, 1200 New Jersey Avenue, S.E., 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. Federal regulation requires that any vehicle lessor receiving this recall notice must forward a copy of this notice to the lessee within ten days. If you no longer own this vehicle, we would appreciate your advising us of the new owner. Please send all known ownership and address changes to PBDiv.Warranty.Docs@paccar.com. We apologize for any inconvenience this preventive procedure may cause and thank you for your participation in helping Peterbilt provide the highest levels of customer satisfaction and service expertise. We value your business and appreciate your ongoing loyalty to Peterbilt and its dealer network. Industry-leading quality, performance and reliability are hallmarks of Peterbilt products, and we thank you for making Peterbilt your truck of choice. Sincerely, Michelle Ponsonby Director of Customer Service Peterbilt Motors Company IMPORTANT SAFETY RECALL Scan this QR code to open the Peterbilt Dealer Locator. AHEEEHA CJDHENJNDLEFJHIDO AHEEEHA BNFFFNB MGAOALIKAKBON M A BNFFFNB FOBAOCFH DFNHJDGCCBKADJAGMAINALAB ALLJFHFHEBDIANDGHJ EJOHGEGMKHBMD IEMDMFED JNMCEJHOE AFCDOGANADFML MFOEDEFHMLGBKOEIDLMLBDNJENIEOCHFI MFFNFNE ACOBBOMLCEMI KDMAHFHACOO A BBB A JCLKDADFBCG JHDAAFEAGNHHC HHHHHHH HH H H HH H H H H H H

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