Cleaning the Teeth

Cleaning up the teeth on the starter of Barclay diesel No.7. It is an air powered starter motor as the loco worked at Grangemouth Oil Refinery and had flameproof fittings. The gear on the starter motor had worn down and a new gear is being fitted so the teeth on the flywheel are being cleaned up to ensure proper engagement (hopefully).
Doon Valley Railway
Waterside, Ayrshire