TUBE AS 2124138 - Caterpillar

5P7277 VOLTAGE TESTER
6V3030 DIGITAL MULTIMETER
8S4627 CIRCUIT TESTERCode And Abbreviations
Use the table that follows for identification of wire colors in the schematics. The three digit number before the color specifies the circuit. If there is a two digit number that follows the color, it tells the gauge of the wire. The gauge of the wire will be 16 if there is no two digit number.Connectors
Some harnesses are connected together by connectors that plug together (one part of one connector goes into the other connector). The connector pins and locations are shown as follows:Some of the connectors shown in the schematics are:
37 PIN CONNECTOR
8V1618 HARNESS "N" PLUG
7V9342 HARNESS "A" RECEPTACLE
25 PIN CONNECTOR
8V1619 HARNESS "F" PLUG
8V1635 HARNESS "C" RECEPTACLE
12 PIN CONNECTOR
8V1618 HARNESS "N" PLUG
8V1635 HARNESS "C" RECEPTACLE
8V1618 HARNESS "N" PLUG
7V9342 HARNESS "A" RECEPTACLE
10 PIN CONNECTOR
7V9342 HARNESS "A" PLUG
7V9513 HARNESS "D" RECEPTACLE
8V1635 HARNESS "C" PLUG
7V9342 HARNESS "A" RECEPTACLE
7 PIN CONNECTOR
ENGINE SHUTDOWN CONTROL MOD.
8V1635 HARNESS "C" RECEPTACLE
6 PIN CONNECTOR
FIRE DETECTION CONTROL MOD.
7V9838 HARNESS "M" RECEPTACLE
4 PIN CONNECTOR
8V1631 HARNESS "BB" PLUG
8V1634 HARNESS "B" RECEPTACLE
4 PIN CONNECTOR
8V1634 HARNESS "B" PLUG
8V1631 HARNESS "BB" RECEPTACLE
8V1634 HARNESS "B" PLUG
8V1618 HARNESS "N" RECEPTACLE
7V9838 HARNESS "M" PLUG
7V9342 HARNESS "A" RECEPTACLE2 Pin Connector
2M104 WIRE AS. "P" PLUG
8V1619 HARNESS "F" RECEPTACLE
8V1619 HARNESS "F" PLUG
8V1618 HARNESS "N" RECEPTACLE
3T2087 HARNESS "T" PLUG
8V1618 HARNESS "N" RECEPTACLEBlock Diagram
The block diagram of the 992C WHEEL LOADER FIRE SUPPRESSION SYSTEM shows the flow of electricity to the different parts of the system. It does not show all components, wires and connections. The block diagram shows which of the components work together.The dashed (broken) lines in the block diagram are an indication of a control connection, for example a switch that controls a relay.