Peterbilt quick release valve on the rear brake signal hose may be missing.
The short version
PACCAR Incorporated reported a problem with the service brakes, air. Here is what owners need to know.
The quick release valve on the rear brake signal hose may be missing. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 121, "Air Brake Systems."
A missing quick release valve cannot ensure correct rear brake release timing, increasing the risk of a crash or injury.
Take it to a dealer — they will inspect the vehicles for a missing quick release valve, and install one if necessary, free of charge.
Affected vehicles
These model years are included in NHTSA campaign 21V-720.
| YEAR RANGE | MODEL |
|---|---|
| 2020–2021 | Peterbilt 520 |
What changed
Newest first. The record shows both when the recall began and what has changed since.
- Recall reported to NHTSA. LATEST
Drive one of these? Check your VIN to see if your specific vehicle is affected.
Check your VINWhat this record means
Data from the NHTSA recall database. A clean VIN check means no open federal recalls for that vehicle — not that it never had one.
Not affiliated
MyAutoRecalls is not affiliated with PACCAR Incorporated or the National Highway Traffic Safety Administration.