Thomas Built Buses Saf-T-Liner Efx: Service brakes — check valve

Affects Thomas Built Buses Saf-T-Liner Efx · 2017–2018 — about 109 vehicles.

The hazard

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.

What to do

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.

Critical — crash/injury risk now High — injury risk; see remedy Moderate — fix at next service Low — minor / informational