United States 78V209000
Volvo Trucks North America
The problem
THE SERVICE BRAKES MAY NOT RELEASE WITHIN 0.55 SECONDS, AS REQUIRED BY FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 121, "AIR BRAKE SYSTEMS".
What owners should do
DEALER WILL INSTALL A QUICK RELEASE VALVE IN THE TRAILER SERVICE BRAKE LINE, WITHOUT CHARGE TO OWNER.
Units 290