CAT Machines Electrical Troubleshooting

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320C

320C, 322C and 325C Excavators Tool Control System – Using Caterpillar Electronic Technician

Posted on August 8, 2022 by sam

Illustration 1 g00280782 Connections for the Electronic Technician (ET) The components that are needed in order to use the CAT Electronic Technician in order to…

320C

320C, 322C and 325C Excavators Tool Control System – Harness and Wire Identification

Posted on August 8, 2022 by sam

The colors and the sizes of the wires that are shown in the Electric Circuit Diagram are identified and described in the following chart: Table…

320C

320C, 322C and 325C Excavators Tool Control System – Electrical Component and Connector Locations

Posted on August 8, 2022 by sam

The following references should be used to locate the components and connectors for the machine that is being serviced: Electrical System Schematic, Parts Manual and…

320C

320C, 322C and 325C Excavators Tool Control System – Service Tools

Posted on August 8, 2022 by sam

The following service tools should be used in order to troubleshoot the electrical system easily: 6V-7070 Digital Multimeter (Heavy Duty) 8T-3224 Needle Tip (Multimeter) 7X-1710…

320C

320C, 322C and 325C Excavators Tool Control System – Monitor Overview

Posted on August 8, 2022 by sam

The monitor displays information about many machine systems. Some machine tests require using the monitor. A machine may not display all paths that are shown…

320C

320C, 322C and 325C Excavators Tool Control System – Relays

Posted on July 6, 2022 by sam

Illustration 1 g00988314 Hydraulic Lock Relay The hydraulic lock relay is wired to the hydraulic activation control lever. This lever is to the left of…

320C

320C, 322C and 325C Excavators Tool Control System – Senders

Posted on July 6, 2022 by sam

Temperature Sender (Hydraulic Oil) Illustration 1 g00020687 Temperature Sender (Hydraulic Oil) The temperature sender for the hydraulic oil connects to the Controller at CONN171-39. The…

320C

320C, 322C and 325C Excavators Tool Control System – Sensors

Posted on July 6, 2022 by sam

Sensors provide information to the controller about changing conditions. Some types of information are listed: speed, temperature and fluid level. The sensor signal changes in…

320C

320C, 322C and 325C Excavators Tool Control System – Switches

Posted on July 6, 2022 by sam

Switch (Clockwise Rotation) Illustration 1 g00938200 (1) Switch for work tool (clockwise rotation) Illustration 2 g00938239 Switch for work tool (clockwise rotation) The switch for…

320C

320C, 322C and 325C Excavators Tool Control System – Implement Electronic Control Module (Tool)

Posted on July 6, 2022 by sam

The implement ECM is attached to machines that are equipped with a System 14 or a System 17. The implement ECM is used in order…

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