312C, 315C, 318C, 319C, 320C, 321C, 322C, 325C, 330C and M325C Excavators and 325C MHPU and 330C MHPU Mobile Hydraulic Power Units Engine and Pump Control - V2 Caterpillar


Speed Sensor - Replace

Usage:

322C ADX



图 1g00667337

转速传感器的安装

(1) 转速传感器

(2) 锁紧螺母

(3) 磁芯

(4) 齿轮

(5) 飞轮壳体

在更换传感器之前,先确保传感器出故障。 务必检查并确认已向传感器供电。 测量传感器的触点之间的电压。 检查磁力探头或轮齿上有无金属屑。

进行下述步骤来更换转速传感器。

  1. 将钥匙起动开关和断路开关转到 OFF 位置。

  1. 缓慢将转速传感器 (1) 拧入飞轮壳体 (5) 中,使磁芯 (3) 接触齿轮 (4) 。

  1. 逆时针转动转速传感器 (1) 。 转动量应约为 3/4 圈。

    注: 321C 为 4/5 - 1 圈。

  1. 暂时拧紧锁紧螺母 (2) 。

  1. 将发动机转速旋钮设定到位置 1(低怠速位置)。

  1. 将断路开关转到接通位置。

  1. 起动发动机。

  1. 启用维修模式。

  1. 输入维修代码 11 来显示发动机转速。

  1. 确认显示的转速为 800 RPM。

    注: 321C 为 1000 RPM。

  1. 如果没有显示正确的转速,则需顺时针转动转速传感器 (1) 。 转动量应不超过 1/3 圈。

  1. 关闭发动机。

  1. 将锁紧螺母 (2) 上紧到 25 N·m (18.4 lb ft) 的扭矩。

    注: 321C 为 29.5 ± 5 N·m (21 ± 4 lb ft)

  1. 确认使用新传感器后排除该故障。

  1. 清除错误记录。 请参阅测试和调整, "使用维修模式"。

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