Complex sentence: The locomotive worked across Van Reenen's Pass between Ladysmith and Harrismith for most of the rest of its service life, until 1938 when it was withdrawn from service because of a cracked frame and scrapped.
Split into simpler sentences: The locomotive worked across Van Reenen's Pass between Ladysmith and Harrismith for most of the rest of its service life. It was withdrawn from service in 1938 because of a cracked frame and scrapped.