Timing - Calibrate
如果表 1 中的诊断代码激活,采用此步骤。
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诊断代码表     | ||
---|---|---|
代码     | 产生此代码的状况     | 系统响应     |
261-13 发动机正时标定:需要进行标定     | 尚未标定发动机转速/正时传感器。     | 这样不会阻止发动机运转。 燃油喷射正时可能失调。     |
发动机转速/正时传感器向电子控制模块(ECM)提供发动机信息。 传感器生成一个脉冲信号。 辅助发动机转速/正时传感器和主发动机转速/正时传感器信号丢失可造成 ECM 停止向喷油器供电。
ECM 向发动机转速/正时传感器提供 12.5 ± 1.0 VDC 供电。 正时参照齿轮的独特轮齿可产生独特的工作负载循环。 该信号向 ECM 提供发动机位置信息。
如果主发动机转速/正时传感器故障,ECM 将采用辅助发动机转速/正时传感器,直到切断 ECM 的电源。 为防止出现任何不必要的停工,尽快更换主发动机转速/正时传感器。
- 安装正时标定探针。
- 将发动机控制开关(ECS)转到断开位置。
- 从飞轮壳体拆卸正时标定插头。
- 通过正时标定孔检测飞轮。 确保探针没有插入正时销孔。 如有必要,转动发动机曲轴。
- 将 6V-3093 换能器过渡接头 插入飞轮上的正时标定孔内。
- 将螺母紧固在 6V-3093 换能器过渡接头 上。
Show/hide table注意 不要将正时标定探针安装到飞轮的正时销孔内,否则会造成损坏。
- 将 7X-1695 电缆 连接在发动机正时标定探针与接头 P26 之间。
- 起动发动机。 使发动机退出冷模式作业。
- 标定燃油喷射正时。
- 从 Caterpillar 电子技师(ET)的 "Service(维修)"菜单选择 "Calibrations(标定)"。 从 "Calibrations(标定)"菜单选择 "Timing Calibration(正时标定)"。
注: 发动机转速由 ECM 在标定期间设定为 800 rpm。
- 从 Caterpillar 电子技师(ET)的 "Service(维修)"菜单选择 "Calibrations(标定)"。 从 "Calibrations(标定)"菜单选择 "Timing Calibration(正时标定)"。
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