| 摘要 |
PURPOSE:To prevent a seal member from being deteriorated by heat by forming downward a drain port with a tap at the bottom of an oil pan, carrying out positioning at the through hole of a casing under the condition where a seal member is provided, and opening a discharge pipe outlet downward of the seal member. CONSTITUTION:A drain port 14 of discharging lubricant is formed at the bottom 13a of a bottomed oil pan 13 so as to protrude downward and a drain bolt 18 is fitted. A through hole 17 is opened downward at the position opposite to the drain port of the bending face 4c of an upper casing 4. The lower end of the drain port 14 and the drain bolt 18 are fitted into the through hole 17 and a seal member 16 is interposed, then the drain port 14 and the part between the through port 17 and the drain port 14 is sealed to interrupt the communication in the inner space of a casing 3. An exhaust pipe 21 penetrates an exhaust pipe insertion part 20 provided at the inside of the oil pan 13 and the exhaust port of an exhaust pipe 21 is positioned below the seal member 16. |
