| 摘要 |
PURPOSE:To maintain lubricating performance so as to reduce mechanical loss by passing an oil gallery through the inner center part of a boss body with the tip thereof extended in the vicinity of primary gear mechanism, as well as opening an oil nozzle at the tip part of the oil gallery, and connecting a lubricating oil supply system to this oil gallery. CONSTITUTION:A boss body 31 with the tip thereof extended in the vicinity of primary gear mechanism is protrusively provided at the clutch chamber 12 side outer face of a transmission cover 7. An oil gallery 32 is passed through the inner center of the boss body 31, and an oil nozzle 33 directed to a part of the outer periphery of the primary gear mechanism is opened at the tip part of the oil gallery 32. The oil gallery 32 is connected to an oil gallery passing through the thick wall part of the transmission cover 7, and its starting end is opened to the inner face of the transmission cover 7 and communicated with an oil pipe 27. Therefore a part of lubricating oil passes from the oil pipe 27 through the oil gallery 32 and is injected from the oil nozzle 33 to wet the primary gear mechanism and lubricate its meshed part.
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