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Sentetsu Tehoko-class locomotive
The Tehoko-class (テホコ) locomotives were a class of steam tender locomotives of the Chosen Government Railway (Sentetsu) with 4-6-0 wheel arrangement.[1] The "Teho" name came from the American naming system for steam locomotives, under which locomotives with 4-6-0 wheel arrangement were called "Ten Wheeler".[2] After the Liberation of Korea, of the 178 surviving locomotives of all Teho classes - including six previously owned by private railway companies - 106 went to the Korean National Railroad in the South, and 72 to the Korean State Railway in the North.[3] DescriptionThe first large class of 4-6-0 locomotives delivered to Sentetsu was the テホコ (Tehoko) class, which were express locomotives equipped with automatic injectors and other improvements, and which were much larger than the previous Teho classes.[1] The first nine, originally numbered 271–279, were built by ALCo's Schenectady Works in 1917, followed by six copies, numbered 280–285, built in the same year by the South Manchuria Railway's Shahekou Works;[1] Another twelve followed in 1918 from ALCO's Pittsburgh plant, numbered 295–306.[1] Like all Teho-type locomotives operated by Sentetsu, they had driving wheels of 1,680 mm (66 in) and a top speed of 95 km/h (59 mph),[1] and were initially used as mainline passenger power on the Gyeongbu Line; they were later relegated to branchline duties.[citation needed] In the 1938 general renumbering they became テホコ1 through テホコ36.[citation needed] The 27 locomotives on the roster at the time of the 1918 renumbering became 701–727 in that year; the last nine, delivered in 1918–19 from Shahekou, were numbered 728–736. In Sentetsu's general renumbering of 1938 the class was designated テホコ (Tehoko) class, and the locomotives were renumbered テホコ1 through テホコ38.[1] PostwarKorean National Railroad 터우5 (Teou5) class The exact dispersal of the Tehoko-class locomotives after the partition of Korea in 1945 and the division of Sentetsu assets in 1947 is uncertain, but at least seven went to the South,[citation needed] where the Korean National Railroad designated them 터우5 (Teou5) class [1] and used them until April 1955, when they were replaced by diesel locomotives.[citation needed] The only surviving Teho type locomotive in South Korea is 터우5-700, on display on a plinth at the entrance of Korail's Human Resources Department. Sentetsu held a commemoration of the 10th anniversary of the re-establishment of the Railway Bureau in Yongsan in 1935, and built 터우5-700 for display there. It was built as a cutaway displaying the internal structure of the locomotive, and it was equipped with a motor to move the driving wheels, which in turn shows the operation of the locomotive's moving parts. After use as a display item it was moved to the Railway University in Yongsan, where it was used as an instructional tool for students, until subsequently being relocated once again to its current location for preservation as part of Korea's railway cultural heritage.[citation needed] Korean State Railway 더우오 (Tŏuo) classMost of the class went to the North after the partition, where they were designated 더우오 (Tŏuo) class by the Korean State Railway, but little is known of their service lives and subsequent fates. Construction
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