Abstract: An oil passageway 102 for suppling oil to a torque converter 30 having a pump impeller, a turbine runner and a stator 33, or removing it therefrom is formed between the shaft member 41 of a stator shaft 40 and the boss portion 42a of its flange member 42 and extends along a transmission input shaft 20, while a pump impeller boss member 31a has an outer periphery supported facing the pump impeller boss member 31a and situated closer to the stator 33 than that portion of the pump impeller boss member 31a which is supported by the bearing and the oil passageway 102 has its openings 40b and 40c situated closer to the stator 33 than that portion of the pump impeller boss member 31a which is supported by the bearing.

Abstract: An oil passageway 102 for supplying oil to a torque converter 30 having a pump impeller, a turbine rubber and a stator 33, or removing it therefrom is formed between the shaft member 41 of a stator shaft 40 and the boss portion 42a of its flange member 42 and extends along a transmission input shaft 20, while a pump impeller boss member 31a has an outer periphery supported rotatably by a bearing 12. The boss portion 42a of the flange member 42 has its end facing the pump impeller boss member 31a and situated closer to the stator 33 than that portion of the pump impeller boss member 31a which is supported by the bearing is situated, and the oil passageway 102 has its openings 40b and 40c situated closer to the stator 33 than that portion of the pump impeller boss member 31a which is supported by the bearing is.