The defect
Daimler Trucks North America LLC (DTNA) is recalling certain 2017-2018 Thomas Built Buses Saf-T-Liner EFX transit buses. The check valve for the air brake system may not be plumbed correctly which can cause the primary air system to not be isolated from the secondary air system.
The risk
In the event of a rapid loss of air pressure in the secondary system, the incorrectly plumbed check valve can cause rapid air loss in both secondary and primary system, causing the parking brakes to activate suddenly. This will increase the risk of a crash.
The remedy
DTNA will notify owners, and dealers will inspect and repair the check valve as needed, free of charge. The recall began on August 12, 2018. Owners may contact DTNA customer service at 1-800-547-0712. DTNA's number for this recall is FL-774.
NHTSA's own wording · initiated by MFR
Vehicles covered
| Model | Model years |
|---|---|
| Thomas Built Buses SAF-T-Liner EFX | 2017, 2018 |
Components: SERVICE BRAKES, AIR:SUPPLY:CHECK VALVE
Model years in this recall
NHTSA complaints and the number of recall campaigns for each model year this recall covers.
| Model | Year | Complaints | Recalls |
|---|---|---|---|
| Thomas Built Buses SAF-T-Liner EFX | 2017 | 0 | 16 |
| Thomas Built Buses SAF-T-Liner EFX | 2018 | 0 | 14 |
Other service brakes, air recalls in 2018
29 of the 912 recall campaigns reported to NHTSA in 2018 concerned the service brakes, air; Daimler Trucks North America LLC filed 213 campaigns in all.
| 18V932000 26 Dec 2018 | Spartan Motors USA |
| 18V865000 5 Dec 2018 | Elgin Sweeper Company Inc. |
| 18V859000 4 Dec 2018 | Newmar Corporation |
| 18V821000 20 Nov 2018 | Navistar, Inc. |
| 18V780000 5 Nov 2018 | Thor Motor Coach |
| 18V770000 31 Oct 2018 | Forest River, Inc. |
| 18V750000 23 Oct 2018 | Proterra |
| 18V703000 5 Oct 2018 | Daimler Trucks North America LLC |
NHTSA recalls (public domain) · all recalls of 2018