The defect
PACCAR Incorporated (PACCAR) is recalling certain 2021 Peterbilt 348 and 579 vehicles. The spring brake chamber may have been assembled with incorrect springs that were out of specification, which may cause the pressure plate to shift.
The risk
The pressure plate may tear the diaphragm, causing a loss of air pressure and increasing the risk of a crash.
The remedy
Dealers will replace brake chambers, free of charge. Owner notification letters were mailed on July 9, 2021. Owners may contact PACCAR (Peterbilt) customer service at 1-940-591-4220. PACCAR's number for this recall is 21PBE.
NHTSA's own wording · initiated by MFR
Vehicles covered
| Model | Model years |
|---|---|
| Peterbilt 348 | 2021 |
| Peterbilt 579 | 2021 |
Components: SERVICE BRAKES, AIR:DISC:CHAMBER | 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 348 | 2021 | 0 | 4 |
| Peterbilt 579 | 2021 | 1 | 9 |
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. |
| 21V720000 16 Sept 2021 | PACCAR Incorporated |
| 21V573000 27 Jul 2021 | Mack Trucks, Inc. |
| 21V383000 24 May 2021 | Great Dane Trailers |
| 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