C4.4 (Mech) Industrial Engine Caterpillar


Finding Top Center Position for No. 1 Piston

Usage:

C4.4 2L2

简介

使用下述步骤找到 1 号活塞的上止点位置。

所需工具

表 1
所需工具    
零件号     零件描述     数量    
230-6283     曲轴正时销     1    
230-6284     凸轮轴正时销     1    

步骤




    图 1g01141681

    (1) 凸轮轴销的孔

    (2) 曲轴销的孔

  1. 卸下阀机构罩盖、电热塞和前壳体罩盖。

    注: 曲轴皮带轮仍在发动机上的情况下可以插入曲轴定时销。

  1. 以发动机正常旋转方向转动曲轴,使 4 号气缸的进气门只好开启,而 4 号气缸的排气门仍未完全关闭。

  1. 以发动机正常旋转方向转动曲轴,使曲轴中的孔与缸体和正时齿轮箱中的孔对齐。 将 230-6283 曲轴正时销 完全插入曲柄臂的孔中。

  1. 230-6284 凸轮轴正时销 穿过凸轮轴齿轮中的孔,插入正时齿轮箱中。 发动机已设在 1 号活塞的上止点位置。

    注: 已安装销后,凸轮轴齿轮可以轻微转动。

  1. 从凸轮轴齿轮和曲柄臂上卸下定时销。

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