784C, 785C and 785C HAA Off-Highway Truck Air System and Brakes Caterpillar


General Information

Usage:

785C 1HW

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

机器突然移动或释放气压或油压,可能对机器上或机器附近的人员造成伤亡。

为避免可能造成的伤亡,在测试和调整液压系统之前,遵照以下程序。


  1. 将机器开到平整水平的地方, 远离所有正在工作的机器以及人员。

  1. 将变速箱换档杆移至 NEUTRAL 位置。 关闭发动机。

  1. 卡车上只留一名操作员。 让其他人员远离机器,或者使其他人员都在操作员的视野范围内。

  1. 启动停车制动器。

  1. 在车轮前后都垫上楔子。



    图 1g00280963

    连接至车斗的固定缆线

  1. 将卡车车斗完全升起。 然后,将固定缆线连接至卡车后部。

  1. 确保变速箱旋转式选择器滑阀处于 NEUTRAL-1 位置。

  1. 安装任何接头、软管或部件之前,请确保已释放所有气压和油压。

  1. 不断踩制动踏板,直到没有制动气压为止。

注: 液压系统与变矩器、制动器、制动器冷却系统以及举升装置的运行都有关系。 本节所述的液压系统故障诊断和排除是指处理制动器和制动器冷却系统的故障。 有关与举升装置相关的液压系统的更多信息,请参考液压系统系统运行/测试和调整部分。 有关与变矩器相关的液压系统的更多信息,请参考动力传动系测试和调整部分。

故障诊断和排除可能会比较困难。 下面几页列出了可能出现的故障。 要修复故障,请参考下面列出的故障及可能原因。

这份包含故障及可能原因的列表仅说明可能存在的故障及可能采取的修复操作。 有时可能需要采取更多的修复处理或者采取此列表中没有建议的修复操作。 请记住,一个故障通常不会仅由单个零件引发所致。 一个零件与其他零件配合不良通常也会引发故障。 此列表无法列出所有可能出现的故障及所有可能的原因。 维修人员必须首先查明故障及故障的源头, 然后再执行必要的修复工作。

Caterpillar Information System:

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