770G and 772G Off-Highway Truck Systems Caterpillar


Brake System Air - Purge

Usage:

770G ECM

表 1
所需工具    
零件号     说明     所需数量    
6V-4144     快速连接连接器     1    
235-7104     软管组件     2    
1S-8937     针阀     1    

每个后轮的液压制动器上均具有快速断开接头。 排出系统油内的空气前,制动系统蓄能器必须完全充压。

------ WARNING! ------

制动液压系统的机油中存在空气会造成人员伤亡。

系统中存在空气会影响制动器完全发挥作用,且机器上的车轮可能无法停止。

要使制动液压系统正常工作,其中的机油不得存在空气。


------ WARNING! ------

机器移动会造成人员伤亡。

将挡块放在车轮前后,以确保停车制动器未接合时,机器不会移动。



注意

在进行检验、保养、测试、调整及维修产品期间,必须小心以确保装好排放出的油液。 在打开任何舱室或解体任何储有液体的部件之前,要准备好合适的容器收集液体。

有关收集和盛接 Cat 产品上油液的适用工具和用品,请参阅专门出版物, NENG2500, "代理商维修工具目录"。

按照当地法规和要求处置所有液体。


注: 一次只排出一个车轮的空气

行车制动器和缓速器

后制动器

  1. 通过组装以下部件构成排气软管组件:一个 6V-4144 连接器 、两个 235-7104 软管组件 和一个 1S-8937 针阀



    图 1g01334583

    排气软管组件

    (1) 软管组件

    (2) 快速连接连接器

    (3) 针阀




    图 2g01332716

    (1) 软管组件

    (2) 快速连接连接器

    (4) 右后制动器快速断开

  1. 6V-4144 快速连接器 (2) 连接到后制动器的快速断开接头 (4) 上。



    图 3g01332737

    注: 为了确保制动器蓄能器完全充压,每次制动器接合前高怠速运行发动机 20 秒钟。

  1. 拆下液压油箱 (5) 上的盖板并将排气软管组件 (1) 的另一头插入加注管颈。

  1. 以低怠速运转发动机。

  1. 打开 1S-8937 针阀 (3) 。打开该阀将允许机油流向液压油箱。

  1. 踩下行车制动器踏板。 固定制动器踏板大约 20 秒。 踩下踏板将排出液压制动器机油中的空气。

  1. 关闭 1S-8937 针阀 (3) 。

  1. 松开行车制动器踏板。

  1. 6V-4144 快速连接器 (2) 从后制动器的快速断开接头 (4) 上断开。

  1. 对其他后轮制动器重复步骤 2 到 9。

前制动器

注: 为了确保制动器蓄能器完全充压,每次制动器接合前高怠速运行发动机 20 秒钟。

  1. 踩下行车制动器踏板。 以低怠速运转发动机。



    图 4g02422518

    前行车制动器卡尺的视图

    (6) 排气阀

  1. 将来自排气阀 (6) 的排油软管连接到液压油箱或适当的容器上。

  1. 打开前轮制动器壳体上的排气阀 (6) 并对制动系统排气。

  1. 重复步骤 1 至 3,直到出现持续的油流。

  1. 关闭排气阀。 松开制动踏板。

  1. 对其他前轮制动器完成步骤 1 到 5。

  1. 清除排放软管。

Caterpillar Information System:

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