Caterpillar Equipment Manual (EN)

RENR7258-08 October 2014 Electrical Symbols Table Hydraulic Symbols (Electrical) M G Transducer (Fluid) Transducer (Gas / Air) Generator Electric Motor Electrical Wire Pressure Switch Pressure Switch (Adjustable) Temperature Switch Schematic Electrical Symbols (Electrical) T Pressure Symbol Temperature Symbol Level Symbol Flow Symbol 324D, 325D, 326D, 326D2, 328D LCR, 329D, 329D2, 330D, 336D, 336D2, 340D, 340D2, 345C, 345D, 349D, 349D2, 365C, 374D, 385C, 390D and M325D Excavators Air Conditioning Electrical System Wire Number Identification Codes Electrical Schematic Example Hydraulic Schematic Example Current Standard Current Standard Harness identification code This example indicates wire 135 in harness "AG".

Wire Wire Color Circuit Number Identification 325-AG135 PK-14 Circuit Identification Number Wire Color Wire Gauge 325-PK Previous Standard Wire Wire Color 325-PK-14 Circuit Number Identification Wire Gauge B A (EXAMPLE VALVE) © 2014 Caterpillar All Rights Reserved CAT, CATERPILLAR, their respective logos, “Caterpillar Yellow”, and the POWER EDGE trade dress as well as corporate and product identity used herein, are trademarks of Caterpillar and may not be used without permission SAFETY.CAT.COM RENR7258-08 12 Page,B/W

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1 7 1 F F F F Control Panel Type 2 1 CONN AA BU/BK-20 BR/BK-20 PK-20 BK/RD-20 L-GN/RD-20 PU/YL-20 BR/WH-20 PK/BK-20 PU/RD-20 BU/OR-20 S-BU-20 CONTROL PANEL Type 1 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 L-GRN/RD-20 L-GRN/YL-20 WH/YL-20 37 36 35 34 33 32 31 30 29 40 39 38 CONN A WH/RD-20 PU/GN-20 BLU/ORN-20 PU/RD-20 WH/RD-20 PU/GRN-20 BLU/BK-20 BR/BK-20 PK/GRN-20 ORN/BLU-20 BK/GRN-20 PU/YL-20 GY/BLU-20 BK/YL-20 BR/WH-20 GY/YL-20 BR/ORN-20 PK/BK-20 S-BLU-20 PK-18 BK/RD-20 BK-20 BK/GN-20 171819202122 28 27 26 25 24 23 8 7 6 16 15 14 13 12 11 10 9 5 4 3 2 1 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 28 27 26 25 24 23 22 21 20 19 18 17 CONN AA 21 22 23 1 2 3 24 25 26 4 5 6 27 28 29 7 8 9 10 11 12 30 31 32 33 34 35 13 14 15 16 17 18 36 37 38 39 40 19 20 1 2 1 2 PK/GN-20 GY/YL-20 BK-20 L-GN/YL-20 WH/YL-20 BK/GN-20 PU/YL-20 BK/RD-20 L-GN/RD-20 BR/BK-20 PK-20 BU/BK-20 BK-20 BR/WH-20 GY/YL-20 BK/YL-20 PK/GN-20 OR/BU-20 GY/BU-20 BU/OR-20 PK/BK-20 PU/RD-20 WH/RD-20 PU/GN-20 S-BU-20 BR/OR-20 L-GN/YL-20 WH/YL-20 CONN A DETAIL OF CONN AA Type 2 DETAIL OF CONN JJ DETAIL OF CONN HH OR/BU-20 GY/BU-20 BK/YL-20 BR/OR-20 DETAIL OF CONN AA BR/BK-20 L-GRN/RD-20 BK/GRN-20 ORN/BLU-20 DETAIL OF CONN A PU/RD-20 WH/RD-20 PU/GRN-20 BLU/BK-20 PK/GRN-20 GY/BLU-20 PU/YL-20 BK/YL-20 GY/YL-20 GY/BU-20 BK/YL-20 GY/YL-20 L-GN/RD-20 PU/YL-20 BK/GN-20 BK/YL-20 GY/BU-20 OR/BU-20 BLU/ORN-20 GY/YL-20 PK/GN-20 GY/YL-20 BR/WH-20 BK-20 BU/BK-20 BR/BK-20 PK-18 BK/RD-20 BR/WH-20 PK-18 BK-20 DETAIL OF CONN J DETAIL OF CONN H BK/RD-20 PK-20 BU/BK-20 BR/BK-20 BK-20 PK/GN-20 GY/YL-20 BR/WH-20 L-GRN/YL-20 BR/ORN-20 WH/YL-20 DETAIL OF CONN A Type 2 PK/BK-20 S-BLU-20 BK/RD-20 L-GN/RD-20 PU/YL-20 BK/GN-20 OR/BU-20 GY/BU-20 BK/YL-20 18 CONN CC CONN BB BK/GN-20 PU/YL-20 L-GN/RD-20 BK/RD-20 BU/BK-20 BR/BK-20 PK-18 BR/WH-20 GY/YL-20 PK/GN-20 BK-20 OR/BU-20 GY/BU-20 BK/YL-20 BU/OR-20 PU/RD-20 PK/BK-20 S-BU-20 PU/GN-20 WH/RD-20 BR/OR-20 WH/YL-20 L-GN/YL-20 E E PU/YL-20 L-GN/RD-20 BK/RD-20 WH/YL-20 L-GN/YL-20 1 E E DETAIL OF CONN B DETAIL OF CONN BB BK/GN-20 BU/BK-20 BR/BK-20 PK-20 BR/WH-20 GY/YL-20 PK/GN-20 BK-20 OR/BU-20 GY/BU-20 BK/YL-20 BU/OR-20 PU/RD-20 PK/BK-20 S-BU-20 PU/GN-20 WH/RD-20 BR/OR-20 CONN CC CONN B 2 1 PK/BK-20 PU/RD-20 BU/OR-20 L-GN/YL-20 WH/YL-20 S-BU-20 BR/OR-20 S-BU-20 BR/OR-20 CONN BB 1 2 3 4 5 6 7 8 9 11 10 12 13 14 1 3 2 4 5 7 6 8 9 10 DETAIL OF CONN GG CONN B BK/GN-20 PU/YL-20 L-GN/RD-20 BK/RD-20 PK-18 BR/BK-20 BU/BK-20 BK/YL-20 BK-20 PK/GN-20 GY/YL-20 BR/WH-20 GY/BU-20 OR/BU-20 BU/OR-20 PU/RD-20 PK/BK-20 S-BU-20 PU/GN-20 WH/RD-20 BR/OR-20 WH/YL-20 L-GN/YL-20 CONN C 2 3 4 WATER TEMP SENSOR 245-7831 FROST SENSOR 245-7835 RECIRC TEMP SENSOR 245-7815 WH/RD-20 PU/GN-20 PK/BK-20 PU/RD-20 BU/OR-20 WH/RD-20 PU/GN-20 L-GN/YL-20 WH/YL-20 CONN JJ CONN HH CONN GG PK/GN-20 GY/YL-20 DETAIL OF CONN C DETAIL OF CONN CC 2 1 BK/YL-20 1 2 2 1 PK/GN-20 GN/BU-20 GY/YL-20 BK/RD-20 BK-20 GY/YL-20 GY/BU-20 CONN J GY/YL-20 CONN H GY/YL-20 CONN G DETAIL OF CONN G OR/BU-20 OR/BK-20 5 BK-20 BK/RD-20 OR/BK-20 GY/YL-20 GN/BU-20 OR/BU-20 1 3 7 4 2 5 6 DETAIL OF CONN DD DETAIL OF CONN D L-GN/RD-20 GY/YL-20 PU/GN-20 PU/YL-20 WH/RD-20 GY/YL-20 MOTOR ACTUATOR 245-7817 DETAIL OF CONN K DETAIL OF CONN KK 2 1 OR/BU-20 PU/GN-20 WH/RD-20 7 6 5 4 3 2 1 DETAIL OF CONN E DETAIL OF CONN EE 17 PU/YL-20 GY/YL-20 D D BK-20 GN/BU-20 AMBIENT TEMP SENSOR 235-8874 L-GN/RD-20 D D OR/BK-20 BK/RD-20 CONN EE CONN E 1 2 OR/BU-20 GY/YL-20 CONN D CONN DD OR/BU-20 GY/YL-20 GY/YL-20 OR/BU-20 2 1 CONN K CONN KK DETAIL OF CONN F BK-20 BK/RD-20 OR/BK-20 GN/BU-20 4 3 GN/BU-20 OR/BK-20 BK/RD-20 BK-20 1 3 4 2 16 5 6 3 4 2 1 GN/BL-20 OR/BK-20 BK/RD-20 BK-20 DETAIL OF CONN FF PRESS.SW 196-1665 CONN FF CONN F 15 RD-14 BK/WH-16 OR/BK-18 RD/GN-16 PK-18 BK-14 ACTUATOR 245-7813 6 COMPRESSOR GP 245-7779 245-7780 305-0325 OR-16 RD/WH-16 RD/BU-16 OR/BK-20 1 DETAIL OF CONN S PK/BK-20 7 3 1 6 5 4 2 1 2 CONN T RD-18 BK-18 S-BU-20 CONN LL CONN L OR/BK-20 PK/BK-20 S-BU-20 DETAIL OF CONN LL DETAIL OF CONN L C C LIGHT 12 11 10 9 8 7 6 5 4 3 2 1 RD/BU-16 OR-16 RD/WH-16 BK-14 PK-18 RD/GN-16 RD-14 BK/WH-16 OR/BK-18 C C ACTUATOR 245-7817 BK/GN-20 BU/OR-20 PU/RD-20 10A 15A 10A L-GN/RD-20 3 2 1 OR-16 RD/WH-16 CONN X1 CONN S GY/YL-20 7 L-GN/RD-20 BU/OR-20 BK-16 CONN MM CONN M GY/YL-20 BK/GN-20 PU/RD-20 7 6 5 3 1 4 2 NEG POS RENR7258-08 12 Page, B/W BK-16 OR-16 OR-16 RD/WH-16 4 OR-16 GN/BU-20 BK-20 BK/WH-16 OR/BK-20 4 0R/BK-20 L-GN/YL-20 RD/GN-16 4 RD/BU-16 OR/BK-20 BR/OR-20 RD/WH-16 4 RD-14 OR/BK-20 WH/YL-20 PK/BU-14 CONN R BK/BU-14 PK/BU-14 1 2 BK/BU-14 BK-14 BR/BK-20 BU/BK-20 4 DETAIL OF CONN MM DETAIL OF CONN M 1 2 1 2 1 2 3 CONN W CONN U CONN V CONN P 2 1 3 CONN N CONN WW 1 3 2 CONN UU 1 2 3 CONN VV 1 2 3 CONN RR CONN PP CONN NN MOTOR 8 9 10 12 13 11 14 MOTOR BK-14 BR/BK-20 CONDENSER GP(BASIC) CONDENSER HI RELAY 196-1666 CLUTCH SOL RELAY 196-1666 CONDENSER RELAY 196-1666 BLOWER MAIN RELAY 196-1666 BLOWER MOTOR 245-7839 BLOWER CONTROL 245-7832 3 1 2 4 B B CONDITIONER GP-AIR(BASIC) BK/BU-14 BU/BK-20 B B OR/BK-20 RD/GN-16 DETAIL OF CONN N DETAIL OF CONN NN RD/WH-16 OR/BK-20 L-GN/YL-20 OR/BK-20 RD/BU-16 BR/OR-20 DETAIL OF CONN U DETAIL OF CONN V BK/BU-14 3 1 2 4 3 4 2 1 PK/BU-14 1 2 DETAIL OF CONN P DETAIL OF CONN PP DETAIL OF CONN UU DETAIL OF CONN VV BK/WH-16 GN/BU-20 OR/BK-20 PK/BU-14 3 1 2 4 A A RD-18 BK-18 OR-16 BK-20 WH/YL-20 RD-14 DETAIL OF CONN T DETAIL OF CONN W DETAIL OF CONN RR DETAIL OF CONN R A A BK-16 This Schematic is for the Air Conditioning and Heating System 324D, 325D, 326D, 326D2, 329D, 329D2, 330D, 336D, 336D2, 340D, 340D2, 345C, 345D, 349D, 349D2, 365C, 374D, 385C, 390D, and M325D Excavators Part #:

235-8968, 417-1993 328D LCR Excavators Part #:

357-4103 1 2 3 4 RD/WH-16 OR-16 BU-18 BK-18 DETAIL OF CONN X1 DETAIL OF CONN X2 DETAIL OF CONN WW (1) Refer to the parts manual for your machine for the current part numbers 328D LCR Condenser 7 7 1 6 5 4 3 2 2 3 4 5 6 7 8 9 10 11 12 CONN C MOTOR 7 6 5 4 3 2 6 5 4 3 2 MOTOR 7 6 5 4 3 2 1 7 6 5 4 3 2 1 COMPRESSOR GP 15 RD-18 BK-18 CONN T 1 2 LIGHT 10A 15A 10A 2 1 CONN X2 POS NEG MOTOR 14 CONDENSER GP(BASIC) 236-1907 1 OR/BK-1 2 BK/WH-1 3 RD-14 4 RD/GN-1 5 PK-18 6 BK-14 7 RD/WH-1 8 OR-16 9 RD/BU-1 10 11 12 CONN S Component Description Item Description Part # 1 Control Panel Assembly (1) 2 Water Temperature Sensor 245-7831 3 4 Frost Sensor Recirculation Temperature Sensor 245-7835 245-7815 5 Actuator (Air Outlet) 245-7817 6 Actuator (Air Inlet) 245-7813 7 Actuator (Air Temperature) 245-7817 8 Blower Control 245-7832 9 10 Blower Motor Blower Main Relay 245-7839 196-1666 11 12 Condenser Main Relay Clutch Solenoid Relay 196-1666 196-1666 13 Condenser High Relay 196-1666 14 Refrigerant Condenser (1) 15 Refrigerant Compressor (1) 16 Pressure Switch 196-1665 17 Ambient Temperature Sensor 235-8874 18 Air Conditioner Group (1) 6 5 4 3 2

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