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- 1. INTERACTIVE SCHEMATIC The Bookmarks panel will allow you to quickly navigate to points of interest. Click on any text that is BLUE and underlined. These are hyperlinks that can be used to navi- gate the schematic and machine views. When only one callout is showing on a machine view this button will make all of the callouts visible. This button is located in the top right corner of every machine view page. VIEW ALL CALLOUTS Cover Page Information Schematic Machine Views Component Table Tap Table Fluid Power Symbols Electrical Symbols Front Frame Rear Frame Tap Views Features Options Bookmarks X EC-C3 EC-C2 E-C60 EC-C1 E-C61 To set your screen resolution do the following: RIGHT CLICK on the DESKTOP. Select PROPERTIES. CLICK the SETTINGS TAB. MOVE THE SLIDER under SCREEN RESOLUTION until it shows 1024 X 768. CLICK OK to apply the resolution. This document is best viewed at a screen resolution of 1024 X 768. FUNCTION Zoom In HOTKEYS (Keyboard Shortcuts) Zoom Out Fit to Page Hand Tool “CTRL” / “+” KEYS “CTRL” / “-” “CTRL” / “0” (zero) “SPACEBAR” (hold down) Find “CTRL” / “F”
- 2. KENR6099-05 August 2009 Quick Coupler 320D and 323D Excavator Hydraulic System - Attachment 320D: A6F-1UP A8F1-UP A9F1-UP KGF1-UP MCH1-UP TDH1-UP FAL1-UP KLM1-UP SPN1-UP GDP1-UP 323D: TFA1-UP WGC1-UP YSD1-UP PBE1-UP WNE1-UP ZMF1-UP LFL1-UP PHX1-UP SBZ1-UP Printed in U.S.A.© 2009 Caterpillar, All Rights Reserved
- 3. COMPONENT LOCATION 328-2035 1 F-2 Note A: Refer to parts manual for specific cylinder information. Valve Gp - Solenoid & Manifold Quick Coupler Description Part Number Machine Location Schematic Location 20 21 22 24 25 26 27 28 29 30 31 32 33 34 36 37 38 39 40 41 44 45 46 47 50 51 23 48 49 Attachment: Quick Coupler Standard 320D and 323D 35 43 42 Accumulator Gp - Pilot Manifold Block Cylinder Gp - Boom Cylinder Gp - Stick Filter Gp - Case Drain Filter Gp - Pilot Hydraulic Filter Gp - Return Oil Manifold Gp - Control Motor Gp - Swing Motor Gp - Left Travel Motor Gp - Right Travel Pump Gp - Main Hydraulic Sensor As - Left Pump Pressure Sensor As - Right Pump Pressure Switch As - LH Travel Pressure Switch As - Pilot Pressure Switch As - RH Travel Pressure Swivel Gp Tank Gp - Hydraulic Oil Valve Gp - Cooler Bypass Valve Gp - LH Joystick Valve Gp - Load Control Stick Cylinder Valve Gp - Main Control Valve Gp - Pilot Travel Valve Gp - Pressure Reducing Boom/Swing Valve Gp - RH Joystick Valve Gp - Shuttle Valve Gp - Swing Cushion Valve Gp - Travel LT Counterbalance Valve Gp - Travel RT Counterbalance Cylinder Gp - Bucket Valve Gp - Load Control Boom Cylinder 087-4456 168-9759 Note A Note A Note A B-4 D-7 F-6 F-7 A-4 A-4 A-6 B-5 F-5 F-4 F-3 B-2 B-3 A-3 D-7 B-7 D-6 E-4 A-5 B-7 C-7 D-5 C-1 E-7 B-4 C-6 C-7 E-5 E-4 E-3 F-7 D-2 126-2075 158-8987 188-4140 215-5037 158-8986 209-5992 209-5992 272-6955 221-8859 221-8859 167-3466 167-3466 167-3466 234-4440 266-6561 201-9329 232-4157 255-5683 255-5680 259-7602 158-8250 232-4102 232-4158 185-0462 322-8716 137-3718 237-3718
- 4. TAP LOCATION Tap Number Description Schematic Location EE Left Pump Delivery Pressure B-3 GG Pilot Pump Delivery Pressure A-4 HH Left Pump Power Shift Pressure B-2 JJ Case Drain Pressure B-2 KK Right Pump Power Shift Pressure B-2 SOS Hydraulic Oil Sampling Port A-4 FF Right Pump Delivery Pressure A-2
- 5. FLUID POWER SYMBOLS ONE POSITION TWO POSITION THREE POSITION VENTED PRESSURIZED RETURN ABOVE FLUID LEVEL RETURN BELOW FLUID LEVEL LINES CROSSING LINES JOINING TWO-WAY THREE-WAY FOUR-WAY SPRING CONTROL VALVES RESTRICTION LINE RESTRICTION (FIXED) 2-SECTION PUMP MAIN AUX. SPRING (ADJUSTABLE) VARIABILITY LINE RESTRICTION (VARIABLE) LINE RESTRICTION VARIABLE and PRESSURE COMPENSATED PRESSURE COMPENSATION PUMP: VARIABLE and PRESSURE COMPENSATED ENERGY TRIANGLES HYDRAULIC PNEUMATIC MEASUREMENT PRESSURE TEMPERATURE FLOW ROTATING SHAFTS UNIDIRECTIONAL BIDIRECTIONAL PUSH-PULL LEVER PEDALGENERAL MANUAL PUSH BUTTON SPRING MANUAL CONTROL SYMBOLS HYDRAULIC MOTORS FIXED DISPLACEMENT VARIABLE DISPLACEMENT NON-COMPENSATED UNIDIRECTIONAL BIDIRECTIONAL HYDRAULIC PUMPS FLUID STORAGE RESERVOIRS CROSSING AND JOINING LINES VALVE ENVELOPES VALVE PORTS BASIC COMPONENT SYMBOLS FLUID CONDITIONERPUMP or MOTOR FIXED DISPLACEMENT VARIABLE DISPLACEMENT NON-COMPENSATED UNIDIRECTIONAL BIDIRECTIONAL VALVES PILOT CONTROL SYMBOLSRELEASED PRESSURE EXTERNAL RETURN INTERNAL RETURN REMOTE SUPPLY PRESSURE SIMPLIFIED COMPLETE INTERNAL SUPPLY PRESSURE ACCUMULATORS SPRING LOADED GAS CHARGED SOLENOID or MANUAL SOLENOID and PILOT SOLENOID and PILOT or MANUAL COMBINATION CONTROLS SOLENOID SERVO THERMAL DETENT HYDRAULIC AND PNEUMATIC CYLINDERS DOUBLE ACTINGSINGLE ACTING BASIC SYMBOL SPRING LOADED CHECK VALVES TWO POSITION INFINITE POSITIONING FLOW IN ONE DIRECTION FLOW ALLOWED IN EITHER DIRECTION THREE POSITION CROSS FLOW PARALLEL FLOW INTERNAL PASSAGEWAYS NORMAL POSITION A B P T A B P T SHIFTED POSITION INFINITE POSITION CONTROL VALVES ATTACHMENT MANUAL SHUTOFF SHUTTLE PILOT CONTROLLED
- 6. ELECTRICAL SYMBOLS Hydraulic Symbols (Electrical) 325-AG135 PK-14 Circuit Identification Number Wire Color Wire Gauge Harness identification code This example indicates wire 135 in harness "AG". 325-PK-14 Wire Gauge Wire Color Circuit Number Identification Wire Number Identification Codes Current Standard Previous Standard Electrical Schematic Example Hydraulic Schematic Example 325-PK Wire ColorCircuit Number Identification B A Wire Wire (EXAMPLE VALVE) Current Standard Transducer (Fluid) Transducer (Gas / Air) G Generator Electrical WirePressure Switch M Electric Motor Pressure Switch (Adjustable) Temperature Switch Pressure Symbol Temperature Symbol Level Symbol Flow Symbol Electrical Symbols (Electrical) T
- 7. LINE PATTERNS Drain / Return Lines Component Group Pilot / Load Sensing Pressure Pressure Line Attachment Air Line CALLOUTS Taps (Pressure, Sampling, Sensor - by letter) Components (By number) YY 52 DRAIN / RETURN LINE HYDRAULIC CIRCUIT COLOR DESCRIPTIONS RIGHT MAIN PUMP OUTPUT LEFT MAIN PUMP OUTPUT LEFT & RIGHT MAIN PUMP POWERSHIFT CIRCUIT PILOT PUMP OUTPUT ATTACHMENT CONTROL CIRCUIT SUPPLY LINE BUCKET CYLINDER CONTROL CIRCUIT RIGHT TRAVEL MOTOR CONTROL CIRCUIT TRAVEL SPEED CONTROL CIRCUIT STICK CYLINDER CONTROL CIRCUIT BOOM CYLINDER CONTROL CIRCUIT LEFT TRAVEL MOTOR CONTROL CIRCUIT SWING MOTOR CONTROL CIRCUIT SWING BRAKE CONTROL CIRCUIT R.C.V : RETURN CHECK VALVE NOTES THIS SCHEMATIC IS FOR THE 320D AND 323D EXCAVATOR ATTACHMENT: QUICK COUPLER MEDIA NUMBER: KENR6099-05 PART NUMBER: 282-5862, CHANGE: 03, VERSION: HE Components are shown installed on a fully operable machine. Refer to the appropriate Service Manual for Troubleshooting, Specifications. A B C D E F 1234567 A B C D E F 1234567 TRAVEL(L) TRAVEL(R) T1 T5 BACKFWDBACK FWD T2 T4 T6 T3 JLP JLT STICK SWING OUT JL1 IN JL3 R L JL2 JL4 BUCKET BOOM OPEN CLOSE DOWN UP JR1JR2 JR3JR4 A1 A2 A3 A4 A5 A6 A7 A8 B1 B2 B3 B4 B5 B6 B7 B8 TRAVEL MOTOR (LEFT) TRAVEL MOTOR (RIGHT) T1 Pp3Pp3 T2 ABA B (24) STICK CYLINDER (23) BUCKET CYLINDER M2G2 G1 M1 A3 A1 S1 S3 A2 Pm Pi Pn1 Pn2 Ps2 Ps1 PsM1 Dr1 Dr2 PsM2 P2 Pi1 P1 DR1 DR2 DR3 DR4 DR5 DR6 P-IN PSA1PSA2 T-OUT1 T-OUT2 Pi2 Di2 Pi2 Pi3 Di3 DST bR2 Di1 T AL4 aL4 SPi SDr SP3 Di4 Pi4 Pi1 BP3 BDr BPi BP2 R3aR5AR2BR2 aR2 (22) BOOM CYLINDER SWING MOTOR P1 P2 T A1 A2B1 B2 aL3 JRP JRT bR5 INOUT T TT TP PG PC PAC G4 G3 DrM T2 T1 D E F G SP2 AR5BR5 PG DR MU BG AG B A AG BG BG AG aL1 bL1 bR1 aR1 AL3 BL3 AR4 BR4 AR3 BR3 AL2BL2 aR3 aR4 bR3 bR4 bL3 bL2 bL4 aL2 bL3 bL2 bL1 bR1 bR3 bR4 BL3 AL3 AL1AL2 BL1BL2 aL2 aR1 AR1 BR1 AR3BR3 BR4 AR4 aL1 aR3 aR4 NO.1 (TRAVEL) NO.2 (SWING) NO.3 (LOCK) bL4 AR1BR1AL1BL1 R.C.V-C R.C.V-B R.C.V-A R.C.V-A R.C.V-B R.C.V-C PRPL PL PR HR HR HL HL DR A1B1 STSP1 BL3 BR4 BP1 BT STICK(2) BOOM(1) ATCH BUCKET TRAVEL(R) TRAVEL(L) SWING STICK(1) BOOM(2) (UP) (OUT) (IN) (R) (L) (FWD) (BACK) (FWD) (BACK) (OPEN) (CLOSE) (UP) (DOWN) (OUT) (IN)R1R2 P T C1 C2 UNLOCK LOCK JJ KK EE HH GG SOS (42) VALVE GP LOAD CONT. BOOM CYL 255-5683 (43) VALVE GP LOAD CONT. STICK CYL. 255-5680 (31) MOTOR GP TRAVEL RIGHT 209-5992 (30) MOTOR GP TRAVEL LEFT 209-5992 (29) MOTOR GP SWING 158-8986 (26) FILTER GP PILOT HYDRAULIC 158-8987 (20) ACCUMULATOR GP 087-4456 (27) FILTER GP RETURN OIL 188-4140 (39) TANK GP HYDRAULIC OIL 266-6561 (46) VALVE GP PRESS REDUCING BOOM/SWING 232-4102 (25) FILTER GP CASE DRAIN 126-2075 (41) VALVE GP LH JOYSTICK 232-4157 (47) VALVE GP RH JOYSTICK 232-4158 (37) SWITCH AS. RH TRAVEL PRESSURE 167-3466 (35) SWITCH AS. LH TRAVEL PRESSURE 167-3466 (36) SWITCH AS. PILOT PRESS 167-3466 (40) VALVE GP COOLER BYPASS 201-9329 (48) VALVE GP SHUTTLE 185-0462 (32) PUMP GP MAIN HYD. 272-6955 (21) BLOCK 168-9759 (45) VALVE GP PILOT TRAVEL 158-8250 (49) VALVE GP SWING CUSHION 322-8716 (51) VALVE GP TRAVEL RT COUNTERBALANCE 237-3718 (50) VALVE GP TRAVEL LT COUNTERBALANCE 137-3718 (38) SWIVEL GP 234-4440 (1) VALVE GP SOLENOID & MANIFOLD (QUICK COUPLER) 328-2035 (34) SENSOR AS RIGHT PUMP PRESSURE 221-8859 (33) SENSOR AS LEFT PUMP PRESSURE 221-8859 FF (44) VALVE GP MAIN CONTROL 259-7602 (28) MANIFOLD GP CONTROL 215-5037
- 9. MAIN PUMP & FILTER CIRCUITS KK JJ EE FF HH SOS GG 34 33 32 27 26 HYD. TANK 25 VIEW ALL CALLOUTS
- 10. QUICK COUPLER VALVE GP VIEW A A TOP VIEW 1 1