Finding Top Center Position for No. 1 Piston
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| 所需工具 | |||
|---|---|---|---|
| 工具 | 零件号 | 零件名称 | 数量 |
| A | 139-7063 | 正时销接头 | 1 |
| B | 136-4632 | 正时销 | 1 |
| C(1) | 9S-9082（转动端口工具）
208-0888（转动端口工具） 350-7549（减振器转动工具） 5P-7305（起动马达转动工具） 5P-7306（起动马达转动工具） |
发动机盘车工具 | 1 |
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| (1) | 转动发动机所需的工具将由飞轮壳和应用决定。 |
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| 图 1 | g01167315 |
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飞轮壳 (1) 正时孔 | |
- 从正时孔 (1) 上拆下塞，并将工具 (B) 安装到飞轮壳上的正时孔中。 工具 (C) 可用于转动飞轮壳中的飞轮。 沿发动机旋转方向转动飞轮。 从飞轮端观看发动机时，发动机旋转方向为逆时针。 转动飞轮，直到正时销与飞轮内的螺纹孔接合为止。
注: 如果飞轮转过了啮合点，必须反向转动飞轮，反向意味着与发动机正常旋转方向相反的方向。 转动飞轮大约 30 度。 接着以正常旋转方向转动飞轮，直到正时销与螺纹孔啮合为止。 当 1 号活塞处于上止点位置时，此步骤可消除齿轮的齿隙。
- 从发动机上拆下前气门机构盖。
- 如果 1 号活塞在压缩冲程并且可以用手移动摇臂，则 1 号气缸的进气门和排气门完全关闭。 如果不能移动摇臂且气门微开，则 1 号活塞处于排气冲程。
注: 当已确定实际冲程位置但需要的是另一个冲程位置时，应从飞轮上拆下正时螺栓。 随后沿发动机正常旋转方向转动飞轮 360 度并重新安装正时螺栓。
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