Fluid Power and Electrical Graphic Symbols Caterpillar


Electrical Power Graphic Symbols

Usage:

SR4BHV ADT
Note: Use this module as a basic reference guide for graphic symbols. Do not use this module as a comprehensive reference guide.

Basic Component Symbols



Illustration 1g01390407
(A) Solenoid
(B) Motor
(C) Battery
(D) Exterior light
(E) Circuit breaker
(F) Fuse
(G) Backlight
(H) Potentiometer
(J) Ground
(K) Resistor
(L) Alternator
(M) Gauge
(N) Normally open relay
(P) Normally closed relay
(R) Starter

Switches



Illustration 2g01390733
(S) Disconnect switch
(T) Normally open temperature switch
(U) Normally closed temperature switch
(V) Pressure switch
(W) Normally open pressure switch
(X) Normally closed pressure switch
(Y) Toggle switch
(Z) Flow switch
(AA) Key switch

Resistors



Illustration 3g01390734
(AB) Pressure resistor
(AC) Temperature resistor
(AD) Float resistor

Wire Coloring

Red ... RD

White ... WH

Orange ... OR

Yellow ... YL

Pink ... PK

Black ... BK

Gray ... GY

Purple ... PU

Brown ... BR

Green ... GN

Blue ... BU

Wire Identification



Illustration 4g01409811
Old format
(AE) Wire label
(AF) Color code
(AG) Wire size


Illustration 5g01409813
New format
(AE) Wire label
(AF) Color code
(AG) Wire size
(AH) Wire number 5 in harness "H"

Components



Illustration 6g01409816
Old format


Illustration 7g01409817
New format

Connectors



Illustration 8g03212180
Old format
(AJ) Connector label
(AK) Receptacle side of connector
(AL) Plug side of connector


Illustration 9g03212181
New format
(AJ) Connector label
(AK) Receptacle side of connector
(AL) Plug side of connector

Note: "H" is the harness identification, "C" stands for the connector, and "P/N" is the receptacle connector part number.

Splices



Illustration 10g03212377
Old format
(AM) Splice


Illustration 11g03212379
New format
(AM) Splice
(AN) Side 2 of the splice
(AP) Side 1 of the splice

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