3508C, 3512C and 3516C Marine Engines Caterpillar


Crankshaft Main Bearings - Remove

Usage:

3512C 2A2

拆卸步骤

表 1
所需工具 
工具  零件号  零件描述  数量 
9S-9082  发动机盘车工具 
9U-5023  主轴承扳手 
2P-5517  主轴承工具 
236-6688  主轴承盖工具 

开始:

  1. 拆卸机油泵。 请参阅拆解和组装, "发动机机油泵 - 拆卸"。


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 1g01125228

  1. 将侧盖 (1) 从缸体上拆下。

  2. 用工具 (A)将曲轴上配重转到缸体的顶部。


    图 2g01125196

  3. 使用工具 (B) 并松开主轴承盖上的螺栓 (3)。 将外螺栓从主轴承盖 (2)上拆下。


    图 3g01125192

  4. 安装工具 (D) 直到工具 (D) 到达缸体底部。 调整工具 (D)上的螺母,直至螺母与主轴承盖 (2)接触。 拆下主轴承盖的螺栓 (3)。


    图 4g01125205

  5. 用力均匀地松开工具 (D)的螺母,以降下主轴承盖 (2)。 放下主轴承盖 (2) 至工具 (D) 上的螺栓末端,使之接触主轴承。


    图 5g01125209

  6. 使用工具 (A) 并转动曲轴直到曲轴轴径上的机油孔在无凸舌的主轴承侧以下。 安装工具 (C) 并拆卸上轴承。

  7. 以下步骤适用于将止推板从缸体上拆下。 将止推板从中心主轴承的两端拆下。 要将止推轴承从缸体上拆下,可能需要用撬杆移动曲轴。


    图 6g01125211

  8. 从主轴承盖 (2) 上拆卸下主轴承 (4)。

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