Kenworth T680; Peterbilt 579 (2026-2027): Service brakes, air
Recall 26V442000 · Jul 8, 2026 · PACCAR Incorporated
8
vehicles affected
8
vehicles affected
Facts
- Recall number
- 26V442000
- Date
- Jul 8, 2026
- Maker
- PACCAR Incorporated
- Units affected
- 8
- Kind
- Vehicles
- Component
- Service brakes, air > Supply > Quick release valve
- Model years
- 2026-2027
- Started by
- The maker
- Hazard
- Crash risk
What is wrong
PACCAR Incorporated (PACCAR) is recalling certain 2026-2027 Peterbilt 579 and 2027 Kenworth T680 tractors. The trailer air connection quick release (QR) valve in the air brake system may have been incorrectly installed, which can cause the trailer to become unstable after the driver applies the brakes. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 121, "Air Brake Systems."
What can happen
An incorrectly installed quick release valve that does not function properly can increase the risk of a crash.
The fix
Recall repairs are free of charge.
Paccar inspected and reinstalled the valves, as necessary, free of charge. All affected tractors have been repaired and therefore no owner notification letters are necessary. Owners may contact Peterbilt's customer service at 1-940-591-4220 and Kenworth's customer service at 1-425-828-5888. PACCAR's number for this recall is 26PACC.
Vehicles covered
2 models, 3 model years in all
Related pages
Questions and answers
Which vehicles are in recall 26V442000?
2 models: Kenworth T680 (2027), Peterbilt 579 (2026-2027), about 8 vehicles in all.
What is the fix for recall 26V442000?
Paccar inspected and reinstalled the valves, as necessary, free of charge. All affected tractors have been repaired and therefore no owner notification letters are necessary. Owners may contact Peterbilt's customer service at 1-940-591-4220 and Kenworth's customer service at 1-425-828-5888. PACCAR's number for this.
What can happen?
An incorrectly installed quick release valve that does not function properly can increase the risk of a crash.
A recall means the maker found a safety problem and offers a free fix; it does not mean every unit has the problem. Units affected are as reported by the company. Popular models sell more and so have more recalls and complaints. Official public data; texts are shortened. A dealer can tell whether a single vehicle still needs the repair.