The pre-war Class 15Fs were hand stoked .
The pre-war Class 15Fs were delivered without smoke deflectors , while the post-war locomotives were built with mechanical stokers , smoke deflectors and vacuum brakes on the coupled wheels as well as the tenders .
The pre-war Class 15Fs were hand stoked and were delivered without smoke deflectors , while the post-war locomotives were built with mechanical stokers , smoke deflectors and vacuum brakes on the coupled wheels as well as the tenders .