C3.4B Engines for Caterpillar Built Machines Caterpillar


Position the Valve Mechanism Before Maintenance Procedures

Usage:

CD-44B 398


注意

拆卸摇臂轴前,确保执行此步骤。


表 1
所需工具    
工具     零件号     零件描述     数量    
(1)     5P-7306     壳体     1    
5P-7305 发动机盘车工具     1    
( 1 ) 该工具在电动起动马达的孔上使用。



图 1g01353215

气缸和气门的位置

(A) 进气门

(B) 排气门

  1. 拆下气门机构盖。 请参考拆解和组装, "气门机构盖 - 拆卸和安装"以了解正确步骤。



    图 2g02948536

    典型示例

  1. 选择一个排气摇臂 (1) 。 排气摇臂 (1) 可以处于任何气缸上。

  1. 使用工具 (A) 沿正常旋转方向旋转曲轴,直到液压间隙调节器开始打开排气门。 继续旋转曲轴,直到气门打开到最大程度。 这是安全位置。

    注: 发动机处于安全位置后,在前皮带轮和前壳体上做临时标记。


注意

安装摇臂轴组件前,确保曲轴位于安全位置。


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