The defect
PACCAR Incorporated (PACCAR) is recalling certain 2020-2021 Peterbilt 520 vehicles. 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."
The risk
A missing quick release valve cannot ensure correct rear brake release timing, increasing the risk of a crash or injury.
The remedy
Dealers will inspect the vehicles for a missing quick release valve, and install one if necessary, free of charge. Owner notification letters were mailed on October 7, 2021. Owners may contact PACCAR's customer service at 1-940-591-4220 (Peterbilt). PACCAR's number for this recall is 21PBK.
NHTSA's own wording · initiated by MFR
Vehicles covered
| Model | Model years |
|---|---|
| Peterbilt 520 | 2020, 2021 |
Components: SERVICE BRAKES, AIR
Model years in this recall
NHTSA complaints and the number of recall campaigns for each model year this recall covers.
| Model | Year | Complaints | Recalls |
|---|---|---|---|
| Peterbilt 520 | 2020 | 3 | 12 |
| Peterbilt 520 | 2021 | 0 | 6 |
Other service brakes, air recalls in 2021
14 of the 988 recall campaigns reported to NHTSA in 2021 concerned the service brakes, air; PACCAR Incorporated filed 154 campaigns in all.
| 21V914000 22 Nov 2021 | Daimler Trucks North America, LLC |
| 21V883000 12 Nov 2021 | Timpte, Inc. |
| 21V573000 27 Jul 2021 | Mack Trucks, Inc. |
| 21V383000 24 May 2021 | Great Dane Trailers |
| 21V328000 10 May 2021 | PACCAR Incorporated |
| 21V285000 22 Apr 2021 | Blue Bird Body Company |
| 21V284000 22 Apr 2021 | Blue Bird Body Company |
| 21V227000 1 Apr 2021 | Navistar, Inc. |
NHTSA recalls (public domain) · all recalls of 2021