Crankshaft Position for Valve Lash Setting
从飞轮端看曲轴时，SAE 标准发动机曲轴的旋转方向为逆时针方向。
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| 曲轴的气门间隙设置位置
标准逆时针旋转 |
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| 发动机 | 第 1 缸处于上死点位置时的冲程 (1) | 进气门 | 排气门 |
| G3516 | 压缩冲程 | 1-2-5-7-8-12-3-4 | 1-2-13-14-5-6-8-9 |
| 排气冲程 | 13-14-6-9-10-11-15-16 | 7-10-11-12-3-4-15-16 | |
| 点火顺序 | 1-2-5-6-13-14-9-10-15-16-11-12-3-4-7-8 | ||
| G3520 | 压缩冲程 | 1-2-5-6-9-10-11-13-14-17-18 | 1-2-3-4-11-12-13-14-15-16 |
| 排气冲程 | 3-4-7-8-12-15-16-19-20 | 5-6-7-8-9-10-17-18-19-20 | |
| 点火顺序 | 1-2-11-12-3-4-15-16-7-8-19-20-9-10-17-18-5-6-13-14 | ||
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| (1) | 将 1 号活塞置于上止点 (TC) 位置，确定正确冲程。 请参阅测试和调整, "查找 1 号活塞上止点位置"。 查找特定冲程的上止点 (TC) 位置，并针对正确的气缸进行调整。 拆下正时螺栓。 沿发动机正常旋转方向将飞轮转动 360 度。 这样就会将 1 号活塞置于与其另外一个冲程对应的上止点位置。 将正时螺栓安装到飞轮中，然后完成针对其余气缸的调整。 |
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