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Thomas Built Buses Saf-T-Liner HDX Recall 21V714: Loose Fan Belt Can Disable Bus, Forcing Evacuation

NHTSA campaign 21V714, reported September 15, 2021, 50 vehicles potentially affected.

What this recall means for you

The fan drive pulley assembly on certain 2022 Saf-T-Liner HDX school buses may have incorrect or improperly installed mounting bolts. Loose bolts can allow the fan belt to loosen, which can disable the bus.

A bus that stalls in traffic may need to be evacuated while it is in an uncontrolled traffic situation, which increases the risk of injury to passengers. Owners should contact Daimler Trucks North America (DTNA) at 1-800-547-0712, referencing recall FL-902. DTNA will inspect and repair the fan drive pulley assembly mounting bolts as necessary, free of charge, at an authorized dealer. Owner notification letters were mailed on November 12, 2021.

Check whether this recall is open on your vehicle

The repair is normally free at an authorized dealer.

Official recall notice

Safety recall 21V714Daimler Trucks North America, LLC
Component
ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN
Problem
Daimler Trucks North America, LLC (DTNA) is recalling certain 2022 Thomas Built Buses Saf-T-Liner HDX school buses. The fan drive pulley assembly bolts may be incorrect or improperly installed. Incorrect or improperly installed bolts may lead to a loose fan belt, resulting in a disabled bus.
Risk
A disabled school bus may require an evacuation procedure in an uncontrolled traffic situation, increasing the risk of injury.
Remedy
DTNA will inspect and repair the fan drive pulley assembly mounting bolts as necessary, free of charge. Owner notification letters were mailed on November 12, 2021. Owners may contact DTNA's customer service at 1-800-547-0712. DTNA's number for this recall is FL-902.
Notes
Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.nhtsa.gov.

Affected vehicles

Thomas Built Buses Saf-T-Liner HDX2022