Starting and Charging Systems Caterpillar


Analyzer Test Description

Usage:

768C 02X

分析仪测试说明

注: 该手册中列出的电压是有两种例外情况的直流电压。 以下基本示意图是典型的带有诊断接头的 Caterpillar 机器。 下面对两种例外情况进行说明:

  1. 所有机器将不配备示意图中所示的所有部件。 例如,起动辅助、主继电器和两个起动马达。

    示意图中部件的导线连接与包含相同部件的所有机器相同。

  2. 用于连接部件的线束接头如示意图中所示。

所有线束接头未显示在示意图中。 当对机器进行故障测试时,应将线束接头考虑在内。 由分析仪进行的测试包括电路中的接头。

对基本示意图和要测试的机器的电路图进行比较。 判断分析仪测试点中的接头和配线线束。

对以下主题中分析仪所进行的每个电路测试进行基本的解释。 各个主题的示意图仅显示本测试部分的电路。

请参阅机器的电路图,以了解实际上的机器配线。



图 1g01275680
(A) 开路器密封
(B) 主要开路器
(C) 冷却液开关
(D) 交流发电机开路器
(E) 主开路器
(F) 主继电器
(G) 起动辅助电磁阀
(H) 交流发电机
(I) 起动继电器 2
(J) 车辆载荷
(K) 起动马达 2
(L) 起动辅助开关
(M) 起动继电器 1
(N) 起动马达开关
(O) 钥匙起动开关
(P) 起动马达 1
(Q) 断开开关(如有配备)
(1) 测试点
(2) 测试点
(3) 测试点
(4) 测试点
(5) 测试点
(6) 测试点
(7) 测试点
(8) 测试点
(9) 测试点
(10) 测试点
(11) 测试点
(12) 测试点
(13) 测试点
(14) 测试点

注: 示意图中测试点的位置编号与诊断接头上的针编号一致。 例如,示意图中的测试点 1 即是接头上的针 1。

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