page_title: South African Class 17 4-8-0TT
section_title: Rebuilding
hierarchical_section_title: South African Class 17 4-8-0TT / Rebuilding
caption_attribution_description: English: Natal Government Railways Class A no. 105 (4-8-2T), later SAR no. 151Builder's number: Dübs 3481/1897
context_page_description: The South African Railways Class 17 4-8-0TT of 1926 was a steam locomotive from the pre-Union era in the Natal Colony.
  Between 1926 and 1929, to address a shortage of suitable shunting locomotives, the South African Railways rebuilt twenty-one Class A 4-8-2 Mountain type tank steam locomotives to Class 17 4-8-0 Mastodon type tank-and-tender locomotives.
context_section_description: When a shortage of suitable shunting locomotives developed in the 1920s as a result of increasing traffic throughout the country and particularly on the Witwaters­rand, the SAR modified twenty-one of the Class A Belpaire 4-8-2 Mountain type tank loco­mo­tives.
  The modifications were done between 1926 and 1929 and consisted of the removal of their trailing bissel bogies and coal bunkers, the shortening of their main frames and the addition of tenders to increase their coal and water capacity, thereby converting them to 4-8-0 Mastodon type tank-and-tender locomotives.
  Tenders from various scrapped locomotive types were used. The tender depicted in the main picture is a three-axle tender while the official SAR locomotive diagram depicts a tender with four axles on two bogies.
caption: NGR Class D1 no. 105, c. 1900
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