G3500 Engines Caterpillar


Crankshaft Position for Valve Lash Setting

Usage:

G3508 2TJ
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。

表 1
曲轴的气门间隙设置位置
标准逆时针旋转 
发动机  第 1 缸处于上死点位置时的冲程 (1)  进气门  排气门 
G3508  压缩冲程  1-2-6-8  1-2-3-7 
排气冲程 3-4-5-7  4-5-6-8 
点火顺序 1-2-7-3-4-5-6-8 
G3512  压缩冲程  1-3-6-7-10-12  1-4-5-6-9-12 
排气冲程 2-4-5-8-9-11  2-3-7-8-10-11 
点火顺序 1-12-9-4-5-8-11-2-3-10-7-6 
G3516  压缩冲程  1-2-5-7-8-12-13-14  1-2-3-4-5-6-8-9 
排气冲程 3-4-6-9-10-11-15-16  7-10-11-12-13-14-15-16 
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 
曲轴的气门间隙设置位置
可选的顺时针旋向 
G3508  压缩冲程  1-3-4-8  1-2-7-8 
排气冲程 2-5-6-7  3-4-5-6 
点火顺序 1-8-7-2-6-5-4-3 
G3512  压缩冲程  1-3-4-6-7-12  1-4-5-8-9-12 
排气冲程 2-5-8-9-10-11  2-3-6-7-10-11 
点火顺序 1-4-9-8-5-2-11-10-3-6-7-12 
G3516  压缩冲程  1-2-5-6-7-8-13-14  1-2-3-4-5-6-9-10 
排气冲程 3-4-9-10-11-12-15-16  7-8-11-12-13-14-15-16 
点火顺序 1-6-5-4-3-10-9-16-15-12-11-14-13-8-7-2 
G3520  压缩冲程  1-2-5-6-9-11-12-13-14-17-18  1-2-5-6-9-11-12-13-14-17-18 
排气冲程 3-4-7-8-10-15-16-19-20  5-6-7-9-10-14-17-18,19-20 
点火顺序 1-12-11-4-3-16-15-8-7-20-19-10-9-18-17-6-5-14-13-2 
(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"。 找到某一冲程的上死点(TC)位置,并对相应的气缸进行调整。 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 (TC) 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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