| 摘要 |
PURPOSE:To supply sufficient lubricating oil for bearings of shift forks by forming on the internal peripheral faces of the bearings of the shift forks, axially wide annular oil grooves which are constantly communicated to oil path holes in a fork shaft. CONSTITUTION:When an oil pump P is driven, pressurized lubricating oil is supplied to a main oil supply passage 11, passes through oil path holes 141-143 and oil supply paths 151-153 and is then fed on the sliding faces of fork-like catches 61-63 and related shift gears 71-73 to perform forcible lubrication therebetween. Lubricating oil inside the main oil supply passage 11 is supplied between both the left and right sliding faces 171 and 181 and 173 and 183 of the bearings and the external peripheral face of a shift fork shaft 2 via axially wide annular oil grooves 161 and 163 which are formed on the internal peripheral faces of the bearings 101 and 103 of the shift forks 41 and 43 so as to perform focible lubrication therebetween. |
