374F and 390F Excavators and 390F MHPU Mobile Hydraulic Power Unit Caterpillar


Manual Hydraulic Valve - Health Check

Usage:

374F L AP4

手动液压阀(测试模式 7)运行状况检查

注: 可通过监视器或 Cat® 电子技师(Cat ET)维修工具访问 "Health Check(运行状况检查)"测试步骤。

以下步骤显示了监视器中的 "Health Check(运行状况检查)"步骤。




图 1g03609745

"Device Test(设备测试)"菜单位于从 "Main Menu(主菜单)"选择的 "Service(维修)"下面。




图 2g03609840

当选择了 "Device Test(设备测试)"菜单时,存在以下选项:

  • 可变安全阀

  • 附件阀

  • 运行状况检查




图 3g03609819

当选择了 "Health Check(运行状况检查)"菜单时,存在以下选项:

  • 动臂回路 #1

  • 动臂回路 #2

  • 斗杆回路 #1

  • 斗杆回路 #2

  • 斜盘 #1

  • 斜盘 #2

  • 手动阀

  1. 向下滚动并选择 "Manual Valve(手动阀)"

  1. 点击 "OK(确定)"按钮开始测试过程。

  1. 将液压锁定手杆设定在解锁位置。

  1. 将机器移至水平地面上。 将斗杆和铲斗油缸置于最小缩回位置并降下动臂直至连杆接触到地面。 按下 "OK(确定)"继续。



    图 4g03628846

  1. 如果需要,使用 "Slide Bar(滑杆)"增加或减少泵 #1 流量。 按下 "OK(确定)"继续。

  1. 如果需要,使用 "Slide Bar(滑杆)"增加或减少泵 #2 流量。 按下 "OK(确定)"继续。

  1. 如果需要,使用 "Slide Bar(滑杆)"增加或减少旁通 #1 阀电流。 按下 "OK(确定)"继续。

  1. 如果需要,使用 "Slide Bar(滑杆)"增加或减少旁通 #2 阀电流。 按下 "OK(确定)"继续。

  1. 如果需要,使用 "Slide Bar(滑杆)"增加或减少暖机 #1 阀电流。 按下 "OK(确定)"继续。

  1. 如果需要,使用 "Slide Bar(滑杆)"增加或减少暖机 #2 阀电流。 按下 "OK(确定)"继续。

  1. 将任意机具控制输入移至极限位置,以开始 "Health Check(运行状况检查)"。 "Health Check(运行状况检查)"完成前释放控制将导致 "Health Check(运行状况检查)"中止。

  1. "Health Check(运行状况检查)"测试启动。 观察监视器或 Cat ET 中的泵压力。 如需复位泵流量或退出测试,释放操纵杆。

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