120H, 12H, 135H, 140H, 143H, 160H and 163H Motor Graders Caterpillar


Transmission Charging Pump Pressure - Test

Usage:

143H 1AL

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

在调试变速箱传动系统时,把机器开到没有障碍物和安全通风排气的地方。 机器的突然动作或在压力下放油,可能对机上或机器附近人员造成伤害。 为避免造成伤害,在调试变速箱传动系统之前,必须遵照下列程序。



注意

在检验、保养、测试、调整及维修机器时,务必备妥盛接流出液体的容器。 在打开任何腔室或拆解任何储有液体的部件之前,要准备好用合适的容器收集液体。

按照本地法规和指令处置所有液体。


测试前,参考系统操作、测试和调整, "机器故障诊断和排除准备工作"。

表 1
所需工具    
零件号     描述     数量    
1U-5481     压力表总成     1    
1U-5482     压力适配器总成     1    
8T-0856     压力表 (0 至6,000 kPa (0 至 870 psi))     1    

  1. 开动机器,直至变速箱油达到其工作温度 51 °C (124 °F)。

  1. 停下机器。 接合停车制动器并把发动机关闭。



    图 1g00109926

    离开机器尾部

    (1) 测试口

    (2) 变速箱泵

  1. 在变速箱泵 (2) 的测压孔 (1) 装上 8T-0856 压力表 (0 至 6,000 kPa (0 至 870 psi)) 。

  1. 起动发动机。 把油门设到高怠速位置。 把差速器锁定转到 合上 位置。 参考图表2 以取得正确的变速箱油压力。 在图表3上记录压力表的读数。

    表 2
    变速箱油压力(最低)    
    低怠速下 空档 位置。     高怠速下 空档 位置。    

    2690 kPa (390 psi)    

    3240 kPa (470 psi)    

    表 3
    变速箱机油压力表    
    低怠速下 空档 位置。     高怠速下 空档 位置。    
           

  1. 发动机在低怠速下转动,重复步骤1 至步骤4。

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