420E, 430E, 432E, 434E, 442E and 444E Backhoe Loaders Hydraulic and Steering System Caterpillar


Relief Valve (Steering Priority) - Test and Adjust

Usage:

432E BXE

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

突然移动车辆或释放油压会伤害车上或附近的人员。

为避免可能造成的伤害,在测试和调整制动系统之前,执行以下步骤。


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

即使是从针孔大小的渗漏孔中漏出的液体或压力,都能够穿透人体组织而造成严重创伤,甚至死亡。 如果喷射出的液体渗入您的皮肤,必须立即找熟悉这类型创伤的医生处置。

检测是否泄露时,务必使用木板或纸板。





图 1g01226782

(3) 信号安全阀

(4) 优先阀

优先阀 (4) 位于装载机控制阀组的进口歧管上。 装载机控制阀组位于机器右侧,靠近后桥。 从机器底部可以接近装载机控制阀组。

注: 在此测试前,执行转向安全阀测试和装载机安全阀测试,以便检查压力设置。

  1. 接合停车制动器。 起动发动机。 将机器保持在空档。

  1. 以低怠速运转发动机。

  1. 开始将方向盘从一个方向转到另一个方向。 转动方向盘的同时,开始升起装载机的提升功能。

  1. 当装载机升起时,转向旋转力不应改变。 车轮应继续持续转向。

如果转向不一致或转向困难,检查有无这些状况:

  • 优先阀中的节流孔可能因污染堵塞。

  • 优先滑阀因可能的污染卡滞在进口歧管内。

  • 优先滑阀可能需要更换。

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