FRONT BRAKE AIR HOSE LEAKS

What NHTSA is examining

Certain 1998-2001 freightliner century and columbia vehicles exhibit a higher rate of front brake air hose leaks than earlier vintage freightliner vehicles.the leaks have been frequently discovered at fmcsa roadside inspections since these inspections are conducted with the brakes applied (pressurizing the air hose) whereas driver pre-trip inspections may not always be performed with the brakes applied. After a thorough technical review of this matter,odi has concuded that while the subject vehicles exhibit a higher rate of front brake air hose leaks than earlier vintage and peer vehicles, these leaks appear to be minor. Freightliner has extended the warranty for this component to 5 years, 500,000 miles and will assist in alerting those vehicle owners whose vehicles are most susceptible to front brake air hose leakage by issuing a service bulletin alerting those owners to the potential for front brake air hose leakage to occur. See attached report for full technical details.

Vehicles under investigation