Recall 22V939 affects 15,658 2015-2023 Peterbilt 320 and 520 refuse trucks for tracking-rod bracket failure. Repair is free at any franchised Peterbilt dealer.
Peterbilt is recalling 15,658 2015-2023 320 and 520 refuse trucks equipped with Haulmaax/EX suspensions because suspension tracking rod brackets can fail and detach from the forward drive axle. The failure can make the axle unstable and decrease vehicle stability and control, and Peterbilt dealers will complete the recall repair free of charge.
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What's wrong?
The tracking rod bracket on 2015-2023 Peterbilt 320 and 520 refuse trucks is welded to the rear axle housing. The tracking rod helps hold the drive axle in its proper position as the suspension moves under load. That bracket has to stay attached so the axle does not shift out of alignment while the truck is working.
On affected trucks with Haulmaax/EX or Hendrickson HMX suspensions, the bracket weld and support structure are the weak points. High load refuse duty cycles and weld quality can let the bracket crack, fail, and detach from the forward drive axle. When that happens, the axle becomes unstable instead of staying controlled by the suspension.
There is no warning sign before failure. A driver can feel normal handling until the bracket separates and the axle loses stability.
Who's affected?
Covers the 320 and 520 across the 2015 through 2023 model years, all tied to the same tracking-rod bracket on the rear axle housing.
| 2019 Peterbilt 320 | suspension component |
|---|---|
| 2023 Peterbilt 320 | suspension component |
| 2022 Peterbilt 320 | suspension component |
| 2015 Peterbilt 320 | suspension component |
| 2020 Peterbilt 320 | suspension component |
| 2015 Peterbilt 520 | suspension component |
| 2016 Peterbilt 520 | suspension component |
| 2018 Peterbilt 520 | suspension component |
| 2021 Peterbilt 320 | suspension component |
| 2018 Peterbilt 320 | suspension component |
| 2017 Peterbilt 320 | suspension component |
| 2016 Peterbilt 320 | suspension component |
| 2023 Peterbilt 520 | suspension component |
| 2019 Peterbilt 520 | suspension component |
| 2017 Peterbilt 520 | suspension component |
| 2022 Peterbilt 520 | suspension component |
| 2020 Peterbilt 520 | suspension component |
| 2021 Peterbilt 520 | suspension component |
| Units affected | 15,658 |
| Field incidents | NHTSA has logged 3 field incidents to date. |
A matching model year and model name does not confirm inclusion. Check your VIN to confirm whether your specific truck is included.
What's the safety risk?
An unstable axle can reduce vehicle stability and control, increasing the risk of a crash. There is no warning sign before the axle becomes unsafe, so schedule the inspection and bracket repair soon if your VIN is included. Repair is free at any franchised Peterbilt dealer.
What should I do?
- Check your VIN to confirm your 2015-2023 Peterbilt 320 or 520 is included in this recall.
- Contact a franchised Peterbilt dealer to schedule the free tracking-rod-bracket weld inspection and added-bracket repair that stabilizes the forward drive axle.
- Bring the owner letter if Peterbilt mailed one. If not, reference recall number 22V939 when you call.
- Drive cautiously until the repair is complete.
What happens at the repair
At the dealer, a Peterbilt technician inspects the welds at the suspension tracking rod brackets, then adds an additional bracket between the tracking rod bracket and axle housing where it is needed. The recall repair is free at a Peterbilt dealer now, with parts and labor covered. PACCAR used its general reimbursement plan for this recall, so documented repair costs paid before the recall notice can be reviewed under that plan. Bring any related repair paperwork to the service desk.
| Reimbursement | Reimbursement available |
|---|
Timeline
| December 16, 2022 | NHTSA published the recall |
|---|---|
| February 14, 2023 | Dealer notification began |
| February 14, 2023 | Dealer notification ended |
| February 14, 2023 | VIN-searchable in NHTSA's database — Check your VIN to see whether this recall applies to your specific vehicle. |
| February 14, 2023 | Interim owner notification (was planned for this date) |
| February 22, 2023 | Owner notification mailed |
Frequently asked questions
What is recall 22V939?
Recall 22V939 covers 15,658 2015-2023 Peterbilt 320 and 520 refuse trucks with Haulmaax/EX suspensions. The suspension tracking rod brackets can fail and detach from the forward drive axle, making the axle unstable. Peterbilt dealers will inspect the welds and add a bracket for free when needed.
What should I do if my 2015-2023 Peterbilt 320 or 520 is on this recall?
Check your VIN to confirm your specific truck is included in recall 22V939. If it is, contact a franchised Peterbilt dealer to schedule the suspension inspection and bracket repair. Reference recall number 22V939 or Peterbilt recall 22PBL when you call.
Is the recall repair free?
Yes. Federal recall law requires the manufacturer to repair the defect at no cost. Peterbilt dealers will inspect the welds and add the additional bracket between the tracking rod bracket and axle housing free of charge when the truck needs that repair.
What is the safety risk in recall 22V939?
The safety risk is reduced vehicle stability and control. If the tracking rod bracket fails and detaches from the forward drive axle, the axle can become unstable and increase crash risk. Confirm your VIN, then schedule the free dealer inspection and repair.
More information
| NHTSA campaign page | nhtsa.gov/vehicle-recalls/22V939000 |
|---|---|
| Peterbilt customer service | 1-940-591-4220 |
| NHTSA recall # | 22V939 |
| NHTSA recall # (full) | 22V939000 |
Source documents
-
Download Recall Document (PDF) (PDF) - Download Quarterly Report (PDF)
- Download Owner Notification Letter (PDF)
- Download Recall Acknowledgement (PDF)
- Download Recall Document (PDF) (PDF)
- Download Recall Report (PDF)
This article is generated from NHTSA's primary recall filings and reviewed against the source on May 20, 2026. RecallNotify does not paraphrase NHTSA's consequence language; that text is reproduced as written above. Editorial standards →