Mainwaring starts to make his way over the top of the train to retrieve the missing wheel that the Verger is brandishing, and although Jones goes with Mainwaring, he is as usual a complete liability, and Mainwaring has to save him from falling off several times. Once they reach the back of the train, Hodges throws the wheel, and Mainwaring catches it, then he and Jones start to make their way back to the cab.
Mainwaring attempts to retrieve a missing wheel from the Verger, accompanied by Jones who proves to be an obstacle due to his clumsiness. They reach the train's rear, where Hodges throws the wheel, which Mainwaring catches and they continue their journey back to the cab.