 Locomotive tenders were also changed as new , improved designs became available . Some examples of the second batch ( 70025 – 70029 ) were equipped with the BR1A tender , which had a higher water capacity of 5 @,@ 000 gallons . Members of the third batch ( 70045 – 70054 ) were equipped with another tender design , the BR1D , which had 9 tons of coal and 4 @,@ 750 gallons of water , due to the fact that they were intended for use on longer runs in the north of the railway network . This tender design also featured a steam @-@ powered coal pusher , which eliminated the need for crew members to mount the tender to pull forward coal when the locomotive was at a stop . 
