986H Wheel Loader Machine Systems Caterpillar


Brake System Air - Purge

Usage:

986H 986

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

在以下步骤中,如果不是两人同时操作,可能造成人身伤亡。



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。


简介

此信息包括以下程序:

  • 制动系统空气 - 净化

所需工具

表 1
所需工具    
数量     零件号     说明    
根据需要使用     N/A     透明管

6.4 mm (0.25'')    

测试准备

通过完成正在维修的机器的测试和调整, "机器故障诊断和排除的准备"中指定的步骤,执行机器测试准备工作。




    图 1g03333657

    转向机架处于锁定位置

  1. 移动转向机架锁到锁定位置。

  1. 停止发动机。 接合停车制动器。

测试步骤




图 2g03344652

左前车桥壳体视图,其他拐角类似。

(1) 排气螺钉。

行车制动器的四个空气净化螺钉位于相应轴壳体顶端。

注: 每次对一个行车制动器进行该步骤。

  1. 检查液压油箱中的油位。 在整个排气过程中,确保液压油箱仍保持正确油位。

  1. 起动发动机。 使油压增至切断压力。

  1. 将直径为 6.4 mm (.25 in) 的透明油管一端固定于一个空气净化螺钉上。 将管的另一端置于合适的容器中,以收集液压油。 您还可将管引导回液压油箱。 松开排气螺钉 (1) 。

  1. 操作员应缓慢踩下制动踏板。 在整个步骤 5 中将制动器踏板固定到此位置。

  1. 当液压油流过管时,在机油中查看是否有气泡。 让油流入容器,直到看不到气泡为止。 随后上紧排气螺钉 (1) 。 松开制动踏板。

  1. 对其它每个行车制动器进行该步骤。 确保紧固所有空气净化螺钉。

  1. 如有必要,注满液压油箱。

注: 在操作开始的几个小时内,如果制动踏板不稳固,再次进行该步骤。

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