390F Excavator Machine System Caterpillar


Travel on Level Ground - Test - Optional Test

Usage:

390F FEH

技术规格

表 1
"在平地上行驶 - 测试(可选测试)"    
旋转三圈的时间(单位:秒)    
底盘系统     行驶速度     翻新     维修极限     来自压力表的    
向右 向左
长型     高速     前进     30.3 ± 2.5     35.4 或以下     39.0 或以下            
后退    
LOW(低速) 前进     49.2 ± 2.5     55.4 或以下     64.0 或以下            
后退    

简介

在平地上行驶的步骤不能执行时,该测试可作为替代测试。

注: 发动机转速和 / 或测试期间所用的机器配置可能对测试结果产生影响。 有关此项测试所用的发动机转速,请参阅测试和调整, "发动机性能 - 测试(发动机转速)"。 有关此项测试所用的机器配置,请参阅测试和调整, "操作检查"。

注: 执行操作检查之前,必须根据卸压阀压力技术规范设定卸压阀压力。 请参阅测试和调整, "技术规范"。

所需工具

表 2
说明     数量    
秒表     1    

测试步骤

  1. 起动发动机。

  1. 将机器停放在水平地面上。

  1. 将液压油温度提高至 55°± 5°C (131°± 9°F)。



    图 1g00297292

  1. 将一条履带升离地面。 参考图 1。

  1. 在升起的履带的履带板上作标记。

  1. 将机器控制置于以下设定:发动机转速旋钮 "10" 和 AEC 开关关闭。

  1. 将行驶速度控制开关置于高速位置。

  1. 将升起的履带的行驶操纵杆移动至满行程位置。

  1. 测量升起的履带完整旋转三圈所需的时间。 测量每个方向所需的时间。

    注: 前后方向的时差不得超过 0.5 秒钟(高速 行程)或 1.0 秒钟(低速行程)。

  1. 将行驶速度控制开关置于低速位置,然后重复步骤 8 至 9。

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