| 摘要 |
PROBLEM TO BE SOLVED: To provide an extension member for a hub for mounting a double wheel, made easily accessible to a bolt and a nut, to a front axle. SOLUTION: A hub extension device 10 consisting of two parts for adding the double wheel to a front driving axle comprises an inner extension ring 14 for surrounding a cover 26 of a final drive of the front axle and an outer extension member 16 of small diameter outwardly extended from the inner extension ring. The inner extension ring is outwardly extended enough to pass through the cover of the final drive. A bolt 62 for mounting the inner extension ring penetrates the inner extension ring for easily reacting in which the head part the bolt 62 is on the outside of the inner extension ring. The outer extension member is mounted to the inner extension ring by a long bolt 80 extended to the inside of an axle hub 20. The double wheel is mounted to an outer wheel hub.
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