M325D L MH and M325D MH Material Handlers Hydraulic System Caterpillar


Transmission (Shift Pressure) - Test

Usage:

M325D MH EDF

表 1
所需工具    
零件号     零件描述     数量    
8T-0856     压力表 (
0 至 6,000 kPa (0 至 870 psi))    
3    
6V-3989     接头 (测试)     3    
6V-4143     快速连接连接器     6    
6V-3014     软管组件     3    



图 1g01943952

变速箱顶部测试端口的位置

(1) 测压口(一档)

(2) 测压口(二档)

检查换档压力,以便确定变速箱中是否存在泄漏。




    图 2g01943833

    先导油歧管腔室

    (3) 测压口(先导压力)

  1. 将机器停放在平地上并停止发动机。

  1. 释放液压系统压力。 请参阅测试和调整, "液压系统压力 - 释放"。

  1. 将一个 4000 kPa (580 psi) 压力表安装到测压口 (1) 和 (2) 上。

  1. 将一个 4000 kPa (580 psi) 压力表安装到测压口 (3) 上。

  1. 将停车制动器置于断开位置。

  1. 起动发动机。

  1. 在低怠速下运转发动机。

    注: 有关发动机转速设定,请参阅测试和调整, "发动机性能 - 测试(发动机转速)"。

  1. 降下左侧控制台,以释放停车制动器。

  1. 将变速箱开关置于第二档位置。

  1. 检查测压口 (2) 处压力表上的压力。 换档压力应等于测压口 (3) 上的先导压力。

  1. 将变速箱开关置于第一档位置。

  1. 检查测压口 (2) 处压力表上的压力。 测压口 (2) 处的压力应降至 0 kPa (0 psi)。

  1. 检查测压口 (1) 处压力表上的压力。 换档压力应等于先导压力。

  1. 将变速箱开关置于第二档位置。

  1. 检查测压口 (1) 处压力表上的压力。 测压口 (2) 处的压力应降至 0 kPa (0 psi)。

    注: 如果测压口 (1) 或 (2) 上的压力不等于先导蓄能器测压口处的压力,首先检查先导压力设置。

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