trailing wheel

Noun

(rail transport) On a steam locomotive, an unpowered wheel or axle located behind the driving wheels.

Japanese Meaning

蒸気機関車において、動輪の後ろに位置する非駆動の車輪または車軸

The engineer adjusted the valve timing after noticing a crack near the trailing wheel.

運転士は動輪の後方にある動力のない従輪付近の亀裂に気づき、バルブのタイミングを調整した。

Sense（1）

(rail transport) On a steam locomotive, an unpowered wheel or axle located behind the driving wheels.

trailing wheels

（ plural ）