G3606 and G3608 Engines Caterpillar


Valve Mechanism - Install

Usage:

G3606 3XF

安装步骤


注意

保持所有零件清洁无杂质。

杂质会造成快速磨损並縮短部件使用寿命。




    图 1g00563997

  1. 将润滑油涂在阀桥定位销和每个阀桥 (3) 的孔径上。 在原始位置安装阀桥。 拧松调整螺钉。

  2. 使用以下步骤调整阀桥:

    1. 将清洁的机油涂在阀桥的润滑油道内。

    2. 旋出调整螺钉。 用 50 ± 10 N (11 ± 2 lb) 大小的力垂直按压在桥 (3) 的上接触面上。

    3. 顺时针转动调整螺钉直至阀桥润滑油道内的油膜向内移动。 这表明调整螺钉已接触阀杆。

    4. 顺时针转动调整螺钉平衡销的端隙。

    5. 将调整螺钉固定在该位置。 拧紧锁紧螺母至扭矩为 100 ± 15 N·m (74 ± 11 lb ft)

    6. 两个阀桥均进行该步骤。 将润滑油涂在两个阀桥的上接触面上。


    图 2g03890150

  3. 将清洁的发动机机油涂在推杆 (4) 的两端。 将推杆安装在凸轮随动件内。 确保将推杆安装到原始位置。


    图 3g03890159

    注: 拧松摇臂调整螺钉后,才能拧紧摇臂轴螺栓。 如果气门接触活塞,可能导致气门弯曲。

  4. 将摇臂组件 (2)置于摇臂支撑上。

  5. 确保推杆的套筒和摇臂的球头螺钉接合。

  6. 拧松摇臂上的调整螺钉。

  7. 拧紧将摇臂轴固定至摇臂支架的螺栓 (5)。

  8. 调整气门间隙。 更多信息,请参阅技术规格手册, SENR4257, "阀摇臂、阀挺杆和阀桥"。

结束:

  1. 安装阀室盖。 请参阅拆解和组装, "气门机构盖 - 拆卸和安装"。

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