How long it takes to change a set of sprocket wheels and pinions.
When a track or the Coventry driving chains are too slack.
When a clutch is too fierce, and how to correct it.
When a clutch is slipping, and how to adjust it.
When secondary gears are too much worn for further service, and what is the effect of their not being fully in mesh.
How long it takes to change such gears.
When tracks or secondary gears are over or under lubricated.
When brakes are operative or not.
How long it takes to prepare a Tank for a day’s run.
How long it takes thoroughly to clean and adjust a Tank after a day’s work.