3304B and 3306B Engines for Caterpillar Built Machines Caterpillar


Rocker Shaft and Pushrod - Install

Usage:

D6D 01Y

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和缩短部件寿命。





    图 1g00539829

  1. 松开调节螺钉 (3) 。 这将避免在安装摇臂轴组件的过程中气门或推杆弯曲。 安装推杆 (2) 并确保推杆座入气门挺杆。

  1. 将摇臂轴组件 (1) 安装到缸盖上。


    注意

    确保摇臂轴组件两端的定位销对准缸盖中的孔。





    图 2g00591852

    3304B 紧固次序




    图 3g00544706

    3306B 紧固次序

    注: 当将朝向发动机后面的螺栓安装到摇臂轴支座上时,更换 O 形密封圈。

  1. 6V-4876 润滑剂 涂覆在六根螺栓 (4) 的螺纹上,但贯穿后摇臂轴支座的螺栓除外(图 3 中的螺栓 (6) )。 将六根螺栓 (4) 安装到摇臂轴组件上。

  1. 请参考图 3。 按照以下步骤拧紧摇臂轴的六根螺栓 (4) :

    1. 按照数字顺序将全部螺栓拧紧至扭矩 155 N·m (115 lb ft)。

    1. 按照数字顺序将全部螺栓拧紧至扭矩 250 ± 17 N·m (185 ± 13 lb ft)。

    1. 按照数字顺序再次将全部螺栓拧紧至最终扭矩 250 ± 17 N·m (185 ± 13 lb ft)。

  1. 摇臂轴两端的弹簧的组装长度必须为 1.50 ± 0.25 mm (.059 ± .010 in)。 拆下垫圈,或将垫圈安装到弹簧后面,以便改变弹簧的组装长度。

  1. 将进气门间隙调整至 0.38 ± 0.08 mm (.015 ± .003 in),排气门间隙调整至 0.64 ± 0.08 mm (.025 ± .003 in)。 有关调整气门间隙的更多信息,请参考测试和调整, "进气与排气系统"。 将调节螺钉 (3) 的锁止螺母拧紧至扭矩 29 ± 7 N·m (21 ± 5 lb ft)。 请参考技术参数, "气门摇臂和挺杆"。

End By: 安装气门机构盖。 请参考 解体与组装, "气门室盖 - 拆卸和安装"。

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