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SENR5457 20 Page © 1992 Caterpillar All Rights Reserved Printed in U.S.A. SENR5457 November 1992 320 and 320 L Excavators Hydraulic System 320: 2DL1-UP 3RK1-UP 7WK1-UP 320 L: 1TL1-UP 4BK1-UP 9KK1-UP SENR5457 20 Page JR1 JR3 JR2 JR4 JRT JRP JL4 JL2 JL1 JL3 JLTJLP Pp3 Pp3 T T A B B A AR1 BR1 ST AL2BL2 X DR R2 HL dL5 aL5 aL4 AL3BL3 aL3 aL2 AL1 BL1 aL1 PSW aR1 aR2 AR2 BR2 aR3 dR4 Y HR AR4 R1 dSW bR2 bR1 dST1 PL PR PP bL1 PAT bL2 bL3 PiB bL4 PiL bR3aR4 SA5 SA4 SA3 SA2 SA1 SB5 SB4 SB3 SB2 SB1 SP (F) BP1 BT BPi BP3 (B) AL4 J R1 S R2 X1 X2 X3 M3 A1 M1 A2 M2 R1 A3 AP2 DR2 PAC PSA DR3 Pi3 DR1 TOUT PG PG PIN JPi Pi5 Pi8 C/V PEU DR4 DR5 Pi2 Pi1 DR6 R3 R4 R3 AR3 AP1 PTA AT MU DR TT A B TP TLA2 BDr TLA1 TRA1 PSL APi TRA2 BL4 BR3 ADr BP2 Hydraulic Schematic 151-9749 MAIN CONNNECTOR LINE PILOT LINE DRAIN LINE 1 2 3 4 5 6 7 8 9 10 11 12 13 15 16 17 18 19 20 21 22 23 24 27 26 25 37 38 28 29 30 31 14 39 40 41 42 43 44 45 46 47 48 51 49 50 32 33 34 e96879 RENR3819-07 16 Page, B/W RENR3819-07 August 2005 320C Excavators Hydraulic System BEA1-UP FBA1-UP GAA1-UP GHA1-UP GLA1-UP MAA1-UP PAA1-UP ANB1-UP BCB1-UP BDB1-UP MAB1-UP PAB1-UP AMC1-UP BBC1-UP BDC1-UP FBC1-UP GAC1-UP HBC1-UP CCD1-UP BDE1-UP ALF1-UP BEF1-UP DBG1-UP EAG1-UP GNG1-UP JTG1-UP AKH1-UP AXK1-UP BBL1-UP EGL1-UP BCN1-UP SBN1-UP BER1-UP BPR1-UP HKT1-UP RAW1-UP BRX1-UP BMZ1-UP © 2005 Caterpillar All Rights Reserved Printed in U.S.A. Pi4 HR R3 HL Pi2Pi1 AR5 aR5 aR4 aR3 aR2 aR1 aL1 aL2 aL3 aL4 AR4 AR3 AR2 AR1 Pi4 AL1 AL2 AL3 AL4 BR5 BR4 BR3 BR2 BR1 BL1 BL2 BL3 R2 Pi3 bR5 bR4 bR3 bR2 bR1 DST bL1 bL2 bL3 bL4 P1 P2 PIN PSA2 PSA1 PAC T-OUT(2) DR2 RD3 RD4 Pi2 DR5 T-OUT(1) DRG 45 46 48 47 23 22 21 20 19 18 16 15 1314 10 MAIN CONTROL VALVE 41 PILOT OIL MANIFOLD f04860 17 30 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) VARIABLILTY 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 PEDAL GENERAL 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 CONDITIONER PUMP or MOTOR FLUID POWER SYMBOLS FIXED DISPLACEMENT VARIABLE DISPLACEMENT NON-COMPENSATED UNIDIRECTIONAL BIDIRECTIONAL VALVES PILOT CONTROL SYMBOLS RELEASED 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 ACTING SINGLE 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 AB PT AB PT SHIFTED POSITION INFINITE POSITION CONTROL VALVES RENR3819-07 16 Page, B/W Hydr aulic Schematic PILOT LINE DRAIN LINE IN T OUT BDr Pi2 (LOCK) Pi Dr1 A3 M1 M2 A1 A2 NO3 TOUT1 PIN PAC Pi1 P2 P1 PSA2 DR6 DR5 PSA1 DR4 DR3 DR2 DR1 BP1 BT BA T (LOWER) DR RR FR U (OUT) (IN) T S1 G F S3 Pn1 PsM2 Ps1 PsM1 (RAISE) (REV) (FWD) (R) (OPEN) (CLOSE) (L) (FWD) (REV) (TRAVEL) T P1P2 B2 A2 B1 B8B7B6C B5 B4B3B2 B1 A8A7A6A5 A4 Pn2 A3 A2 A1 E D C B G3 SDr PD6 ST G4 DB6 Pm PB2 SP1 A SP2 Pi3 Di3 DST (IN) PRPL (OUT) AR4 R1BR4 AR3BR3 AR2 BR2 Dr2 Ps2 SPi SP3 (RAISE) AR1 BR1 BR5 Di4 Pi4 AL1 bL3 AR5 G2 G1 AL4 DB2 BL1 CLOSE AL2 OPEN AB DB1 A1 R3 BL2 BPi AL3 PB1 DOWN R2 BP3 L R BP2 bR4 aR5 Pi1 aR4 bR5 HR Di1 aR3 bR3 aR2 bR2 aR1 bR1 aL1 bL1 HL aL2 bL2 bL4 Pi2 aL4 Di2 IN UP Pp3Pp3 OUT NO1 TOUT2 (SW PAR KING ) BL3 aL3 MU DR AB PG 158-8176 12 3 4 5 67 8 9 11 1 Item Component 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Component No. Item No. 21 22 23 COMPONENTS Swing Motor Left Travel Motor Right Travel Motor Bucket Cylinder Swivel Stick Drift Reduction Valve Swing Control Valve Right Travel Control Valve Attachment Control Valve Bucket Control Valve Line Relief Valve (Stick Cylinder Head End) Straight Travel Control Valve 24 25 26 27 28 29 30 Stick Unloading Valve Main Relief Valve Stick Cylinder Boom Cylinder Boom II Control Valve Stick I Control Valve Left Travel Control Valve Straight Travel Control Solenoid Stick Regeneration Valve Negative Flow Control Relief Valve Boom I Control Valve Boom Drift Reduction Valve Main Control Valve Stick II Control Valve Line Relief Valve (Bucket Cylinder Rod End) Line Relief Valve (Bucket Cylinder Head End) Boom Regeneration Valve Pressur e Switch Pressur e Switch Pilot Control Valve (Swing and Stick) Pilot Control Valve (Boom and Bucket) Pressur e Switch Accumulator Reducing Valve (Boom/Swing Priority Mode) Pressur e Sensor (Left Pump) Travel Speed Solenoid Valve 34 35 32 33 31 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 37 36 53 54 55 56 57 58 59 Valve Left Pump Pilot Pump Slow Return Check Valve Bypass Check Valve Return Filter Right Pump Pilot Relief Valve Pilot Filter Pressur e Sensor (Right Pump) 60 Oil Cooler Pilot Control Valve (Travel) Negative Flow Control Relief Valve Travel Brake Valve (Left) Travel Brake Valve (Right) Line Relief Valve (Boom Cylinder Rod End) Swing Parking Brake Solenoid Valve Solenoid Valve (Hydraulic Activation) Pilot Oil Manifold 10 12 13 14 15 16 18 19 20 21 22 23 24 25 17 28 30 26 27 29 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 55 56 57 58 59 60 54 Variable Swing Priority Valve Hydraulic Tank Case Drain Filter 7 4 8 9 55 5610 1535859574950543625 f04859 MAIN CONNECTOR LINE RENR7296-01 16 Page Hydraulic Symbols (Electrical) Electrical Symbols Table 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 Color Circuit Number Identification B A Wire Wire (EXAMPLE VALVE) Current Standard Transducer (Fluid) Transducer (Gas / Air) G Generator Electrical Wire Pressure Switch M Electric Motor Pressure Switch (Adjustable) Temperature Switch Pressure Symbol Temperature Symbol Level Symbol Flow Symbol Electrical Symbols (Electrical) 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 CONDITIONER PUMP or MOTOR FLUID POWER SYMBOLS FIXED DISPLACEMENT VARIABLE DISPLACEMENT NON-COMPENSATED UNIDIRECTIONAL BIDIRECTIONAL VALVES PILOT CONTROL SYMBOLS RELEASED 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 ACTING SINGLE 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 T RENR7296-02 March 2007 320D & 320D L Excavator Hydraulic System 320D: MCH1-UP FAL1-UP CXY1-UP JGZ1-UP 320D L: MDE1-UP KGF1-UP DHK1-UP PHX1-UP © 2007 Caterpillar All Rights Reserved Printed in U.S.A. MOTOR GP - PISTON (TRAVEL) FILTER GP MOTOR GP - SWING & SWIVELVALVE GP - MAIN CONTROL PUMP GP - PISTON (MAIN) Machine Component Locations Description Part Number Machine Location Schematic Location ACCUMULATOR 164-6981 1 A-6 CYLINDER GP - BOOM NOTE A NOTE A NOTE A NOTE A: CHECK PARTS MANUAL FOR YOUR MACHINE PART NUMBERS. 2 F-3 CYLINDER GP - BUCKET 3 F-3 G-10 CYLINDER GP - STICK 4 FILTER GP - OIL (CASE DRAIN) 126-2075 5 A-8 FILTER GP - OIL (PILOT) 158-8987 6 A-5 FILTER GP - OIL 188-4140 7 A-9 8MOTOR GP - SWING 158-8986 9 G-8 MOTOR GP - TRAVEL 209-5992 10 G-5, G-6 11 PUMP GP - PISTON (MAIN) 272-6955 234-4440 12 B-3 E-6SWIVEL 13 VALVE GP - TRAVEL COUNTERBALANCE 137-3718 14 F-5, F-6 VALVE GP - PILOT (TRAVEL) 270-5947 15 E-10 VALVE GP - SHUTTLE 185-0462 16 C-10 VALVE GP - CHECK 201-9329 17 A-10 VALVE GP - PILOT MANIFOLD 215-5037 18 B-8 VALVE GP - LOAD CONTROL (STICK) 255-5680 19 D-7 VALVE GP - LOAD CONTROL (BOOM) 255-5683 20 D-3 VALVE GP - MAIN CONTROL 259-7464 21 259-7732 B-522 VALVE GP - SWING CUSHION 158-9085 F-823 D-3 24 VALVE GP - PILOT CONTROL (LEFT JOYSTICK) 270-5951 D-10 VALVE GP - PILOT CONTROL (RIGHT JOYSTICK) 270-5952 D-9 VALVE GP - PRESSURE REDUCING (IMPLEMENT, SWING PRIORITY) 232-4102 B-5 COMPONENT LOCATIONS 9 24 15 13 10 14 7 6 5 8 23 11 10 9 24 9 24 8 23 14 22 20 12 15 13 18 21 19 1716 11 3 4 5 2 7 1 6 RENR7296-01 16 Page, Color 2 DRAIN / RETURN LINE LINES GROUP COLOR DESCRIPTIONS IMPLEMENT & LEFT TRAVEL PUMP OUTPUT IMPLEMENT & RIGHT TRAVEL PUMP OUTPUT PILOT PUMP OUTPUT ATTACHMENT CONTROL CIRCUIT SUPPLY LINE BUCKET CONTROL & BUCKET CYLINDER CIRCUIT RIGHT TRAVEL CONTROL & RIGHT TRAVEL MOTOR CIRCUIT TRAVEL SPEED CONTROL CIRCUIT STICK CONTROL & STICK CYLINDER CIRCUIT SHUTTLE VALVE CONTROL CIRCUIT COMBINED LEFT & RIGHT PUMP SIGNAL PRESSURE BOOM CONTROL & BOOM CYLINDER CIRCUIT LEFT TRAVEL CONTROL & LEFT TRAVEL MOTOR CIRCUIT SWING CONTROL & SWING MOTOR CIRCUIT 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 Connections by letter YY 1 AA THIS SCHEMATIC IS FOR THE 320D AND 320D L EXCAVATOR PART #: 259-7469 HE01 Components are shown installed on a fully operable machine with the key and engine off and transmission shifter in neutral. Refer to the appropriate Service Manual for Troubleshooting, Specifications and Systems Operations A B C D E F G 12345678910 12345678910 A B C D E F G aR3 RCV-C RCV-B RCV-A aR4 bR3 bR4 bL3 bL2 bL4 aL2 bL4 bL3 bL2 bL1 bR1 bR3 bR4 bR1 aR1 aL1 bL1 aR3 aR4 aR1 aL1aL2 AL3 BL3 AL2BL2 BR1 BL1 AL1 AR1 AR3 BR3 AR4 BR4 BR3 AR3 AR4 BR4 BR1 AR1 AL1 AL2 AL3 BL3 BL2 BL1 TRAVEL(L) TRAVEL(R) VALVE GP PILOT (TRAVEL) 270-5947 T1 T5 BACK FWD BACK FWD T2 T4 T6 T3 JLP JLT STICK SWING OUT JL1 IN JL3 R L JL2 JL4 BUCKET BOOM OPEN CLOSE DOWN UP JR1 JR2 JR3 JR4 A1 A2 A3 A4 A5 A6 A7 A8 B1 B2 B3 B4 B5 B6 B7 B8 STICK CYLINDER P2 Pi1 DR1 DR2 DR3 DR4 DR5 DR6 P-IN PSA1 PAC PSA2 T-OUT1 T-OUT2 Pi2 A C B D E F G VALVE GP CHECK 201-9329 FILTER GP OIL 188-4140 FILTER GP OIL (CASE DRAIN) 126-2075 VALVE GP SHUTTLE 185-0462 VALVE GP PILOT MANIFOLD 215-5037 JRT VALVE GP PILOT CONTROL (LEFT JOYSTICK) 270-5951 VALVE GP PILOT CONTROL (RIGHT JOYSTICK) 270-5952 ACCUMULATOR GP 164-6981 NO.1 (TRAVEL) NO.2 (SWING) NO.3 (LOCK) TRAVEL MOTOR (LEFT) TRAVEL MOTOR (RIGHT) Pp3 BG Pp3 BG T1 T2 T1 T2 AG AG A B A B BUCKET CYLINDER BOOM CYLINDER M2 G2 G1 M1 A3 A1 S1 S3 A2 Pm Pi Pn1 Pn2 Ps2 Ps1 PsM1 Dr1 Dr2 DrM PsM2 HL Di2 STICK(2) BOOM(1) ATCH BUCKET TRAVEL(R) TRAVEL(L) SWING STICK(1) BOOM(2) Pi2 Pi3 Di3 DST PL PR bR2 Di1 HR AL4 SEE LOC A-10 SEE LOC A-10 aL4 SPi SDr SP3 Di4 Pi4 Pi1 BP3 BDr BPi R3aR5 AR5 BOOM DRIFT REDUCTION BR5 BTBP1 AR2BR2 aR2 (UP) (OUT) (IN) (R) (L) (FWD) (REV) (FWD) (REV) (OPEN) (CLOSE) (UP) (DOWN) (OUT) PG DR MU BG AG AB SWING MOTOR P1 P2 T A1 A2B1 B2 aL3 MOTOR GP SWING 158-8986 VALVE GP SWING CUSHION 158-9085 MOTOR GP TRAVEL 209-5992 VALVE GP TRAVEL COUNTERBALANCE 137-3718 MOTOR GP TRAVEL 209-5992 VALVE GP TRAVEL COUNTERBALANCE 137-3718 SWIVEL GP 234-4440 VALVE GP LOAD CONTROL (BOOM) 255-5683 VALVE GP LOAD CONTROL (STICK) 255-5680 VALVE GP MAIN CONTROL 259-7464 PUMP GP PISTON (MAIN) 272-6955 RCV: RETURN CHECK VALVE FILTER GP OIL (PILOT) 158-8987 bR5 INOUT T DR A1 B1 PG U FRRR VALVE GP PRESSURE REDUCING (IMPLEMENT, SWING PRIORITY) 232-4102 VALVE GP SHUTTLE 259-7732 PC P1 JRP T BP2 PILOT I D TRAVEL BRAKETRAVEL BRAKE PRESSURE SWITCH PRESSURE SWITCH PRESSURE SWITCH SLOW RETURN BYPASS OIL COOLER RETURN DRAIN TRAVEL SPEED SWING PRIORITY PRESSURE SENSOR PROPORTIONAL REDUCING VALVE MAIN RELIEF PRESSURE SENSOR STICK DRIFT REDUCTION RCV-C RCV-A RCV-B SEE LOC A-10 SEE LOC E-2 SEE LOC G-9 SEE LOC E-8 HL HR PL PL PR PR HL HR © 2002 Caterpillar All Rights Reserved Printed in U.S.A. RENR3110-02 April 2002 365B Excavator Hydraulic System 365B L: AGD1-235 9PZ1-474 9TZ1-530 4XZ1-339 14 15 16 54 55 21 41 42 22 18 19 20 61 35 37 39 40 57 63 62 6059 58 24 46 45 43 41 55 52 5048 49 32 30 28 27 25 26 Main Control Valve 17 f00914 Pilot Manifold PIN Pi3 Pi2 Pi1 PSA3 PSA2 PSA1 PSA 4 DR3 DR2 DR1 TOUT PG Pi6 Pi5 Pi4 DR6 DR5 DR4 PAC f00915 70 71 75 76 72 P P R T1 L' L' B' A' BR BR MB MA M MB A'B' LEFT PR PG E F L2 D L1 Qmax Qmin T1 A' D F E P T M2 M1 B' B P1 P2 Dr REV FWD FWD A T2 T2 (PS) REV BL2 AL2 B LL1S PSA3 PSA2 PSA1 PG PIN TOUT DR1 DR2 DR3 Pi5 PAC Pi3 Pi2 Pi1 Pi4 Pi6 M1 T2T1 R S AS PSA4 DR6 M G aR3 aL3 bR3 bL3 aL1 aR1 bL4 aL4 bR1 PF PR bL1 R1 D1 D2 R2 AL4 BR1 R2 AR1 BL1 AL1 AR3 BR3 AL3 BL3 RIGHT S1 DR5 BL4 dR1 bL2 QmaxQmin B M2 M2g A LS2 LS2g PS2g PS2 M2g'M1g' PS1g PS1 aL2 R1 UP DR4 LS1g LS1 SA1 M1g M1 P2 P1 )( )( M MA QminQmax B A CLOSE PD P1 P2 Dr X DOWN OPEN SA2 OUT IN MAIN CONNNECTOR LINE PILOT LINE DRAIN LINE Hydraulic Schematic 140-0690 1 2 3 4 5 6 7 9 8 13 14 15 16 17 18 19 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 41 20 10 77 78 79 80 81 82 83 84 85 86 87 88 2 3 1 7 11 54 858483 86 81 888786 82 80 13 Item Component STANDARD COMPONENTS Component No. Item No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 Drain Filter 30 31 32 33 34 35 36 37 38 39 40 41 42 44 43 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 Bucket Cylinder Stick Cylinder Boom Cylinder Travel Motor (Right) Travel Brake Valve (Right) Travel Motor (Left) Swing Motor (Right) Travel Brake Valve (Left) Swing Control Valve Swing Parking Brake Solenoid Swing Motor (Left) Cushion Crossover Relief Valve Swivel Attachment Spool Proportional Valve Bucket Spool Proportional Valve (Close) Boom Spool Proportional Valve (Close) Main Control Valve Stick Spool Proportional Valve (In) Left Travel Spool Proportional Valve (Frwd) Right Travel Spool Proportional Valve (Frwd) Signal Duplication Valve (Boom Side) Signal Bypass Valve Signal Relief Valve (Travel) Signal Duplication Valve (Stick Side) Solenoid Valve (Neutral Bypass) Neutral Flow Control Valve Differential Pressure Relief Valve (Rear) Flow Compensator Valve (Attachment) Attachment Control Valve Flow Compensator Valve (Bucket) Bucket Control Valve Flow Compensator Valve (Boom) Boom Control Valve Stick Control Valve Flow Compensator Valve (Stick) Left Travel Control Valve Flow Compensator Valve (Left Travel) Right Travel Control Valve Flow Compensator Valve (Right Travel) Differential Pressure Relief Valve (Front) Signal Relief Valve (Boom Side) Signal Relief Valve (Heavy Duty) High/Low Relief Solenoid (Boom Side) Signal Relief Valve (Travel) Swing Pump Cooling Pump Pilot Pump Rear Pump Charged Pump Front Pump Drain Filter Oil Cooler Hydraulic Tank Return Filter Swing Pump Pressure Sensor Accumulator Hydraulic Activation Valve Valve Pilot Relief Valve Pilot Oil Manifold Proportional Reducing Valve Travel Speed Solenoid Valve Front Pump Pressure Sensor Cooling Fan Motor Back Pressure Valve Return Filter Bypass Check Valve Pilot Filter Right Travel Spool Proportional Valve (REV) Left Travel Spool Proportional Valve (REV) Line Relief Valve (Stick Cylinder Rod End) Stick Spool Proportional Valve (Out) Stick Drift Reduction Valve Line Relief Valve (Stick Cylinder Head End) Stick Drift Reduction Solenoid Line Relief Valve (Boom Cylinder Head End) Boom Drift Reduction Valve Boom Drift Reduction Solenoid Line Relief Valve (Boom Cylinder Rod End) Boom Spool Proportional Valve (Down) Line Relief Valve (Bucket Cylinder Rod End) Bucket Cylinder Proportional Valve (Open) Line Relief Valve (Bucket Cylinder Rod End) Attachment Spool Proportional Valve Load Signal Control Valve Signal Relief Valve (Stick Side) High/Low Relief Solenoid (Stick Side) f05416 12 11 RENR7306 20 Page, RBM © 2005 Caterpillar All Rights Reserved Printed in U.S.A. RENR7306 January 2005 365C Excavator Hydraulic System ELC1-UP MEM1-UP FEN1-UP MCS1-UP MCY1-UP 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:VARIABLEand PRESSURE COMPENSATED ENERGY TRIANGLES HYDRAULIC PNEUMATIC MEASUREMENT PRESSURE TEMPERATURE FLOW ROTATING SHAFTS UNIDIRECTIONAL BIDIRECTIONAL PUSH-PULL LEVER PEDAL GENERAL 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 CONDITIONER PUMP or MOTOR FLUID POWER SYMBOLS FIXED DISPLACEMENT VARIABLE DISPLACEMENT NON-COMPENSATED UNIDIRECTIONAL BIDIRECTIONAL VALVES PILOT CONTROL SYMBOLS RELEASED 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 ACTING SINGLE 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 AB PT AB PT SHIFTED POSITION INFINITE POSITION CONTROL VALVES Hydraulic Symbols (Electrical) Electrical Symbols Table 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 Color Circuit Number Identification B A Wire Wire (EXAMPLE VALVE) Current Standard Transducer (Fluid) Transducer (Gas / Air) G Generator Electrical Wire Pressure Switch M Electric Motor Pressure Switch (Adjustable) Temperature Switch T Pressure Symbol Temperature Symbol Level Symbol Flow Symbol Electrical Symbols (Electrical) Description Part Number Machine Location Schematic Location Accumulator GP 160-4138 8 G-10 Filter GP - Case Drain 6E-5534 1 A-14 Filter GP - Pilot 185-0336 9 B-15 Filter GP - Return 234-4454 17 B-14 Filter GP - Return 259-0681 22 A-15 Motor GP - Fan 225-4613 15 B-13 Motor GP - Swing, Left 234-4525 18 I-8 Motor GP - Swing, Right 234-4527 19 H-10 Motor GP - Travel, Lt and Rt 147-5784 5 H-11 and H-12 Pump GP - Fan 247-8968 21 B-9 Pump GP - Main, Front & Rear 225-4493 13 A-12 Pump GP - Swing 225-4495 14 B-8 Pump GP -Pilot 155-9222 6 A-10 Sensor GP - Pressure 221-8869 12 B-9 and B-12 Swivel GP 156-0622 7 G-11 Valve GP - Back Pressure 201-9381 10 D-7 Valve GP - Check, Bypass 201-9382 11 D-15 Valve GP - Counterbalance 143-8067 4 H-11 and H-12 Valve GP - Proportional 230-0081 16 F-7 Valve GP - Proportional, Swing 241-8928 20 H-10 Valve GP - Solenoid, Swing Park 140-0736 3 F-10 Valve GP - Swing 116-3420 2 H-8 Component Locations Case Drain Filters (1). Left Swing Motor (18). Right Swing Motor (19). Pilot Pump (6). Main Pumps, Front and Rear (13). Swing Pump (14). Fan Pump (21). Left Swing Motor (18). Swing Park Brake Solenoid Valve (3). Pilot Pump (6). Left Travel Motor (5). Counterbalance Valve (4). 1 14 6 7 18 19 5 13 5 2 Component Locations [...]... 13 50 20 15 51 37 58 49 17 43 21 36 22 44 45 29 87 42 88 39 86 41 56 46 54 48 16 MYA1-UP RCD1-UP BKF1-UP ANS1-UP BKX1-UP BLY1-UP 55 57 47 385B Excavator Hydraulic System 59 60 Main Control Valve © 2003 Caterpillar All Rights Reserved PSA3 PSA1 PSA2 67 PAC 63 PSA4 PIN 62 Pi1 DR4 Pi2 DR5 Pi5 Pi3 DR1 DR2 DR6 DR3 Pi6 61 PG 65 TOUT Pilot Oil Manifold Printed in U.S.A 2 Hydraulic Schematic 158-8129 6 MAIN... Identification A Wire Gauge (EXAMPLE VALVE) 20 Page, REM Part Number M RENR7376-00 Description FLOW ALLOWED IN EITHER DIRECTION The return accumulator (16) is located below the case drain filters © 2005 Caterpillar All Rights Reserved 10 TWO POSITION THREE POSITION INFINITE POSITIONING UNIDIRECTIONAL BIDIRECTIONAL DOUBLE ACTING INTERNAL PASSAGEWAYS VARIABLE DISPLACEMENT NON-COMPENSATED UNIDIRECTIONAL... Identification A Wire Gauge (EXAMPLE VALVE) 20 Page, REM Part Number M RENR7366-00 Description FLOW ALLOWED IN EITHER DIRECTION The return accumulator (16) is located below the case drain filters © 2005 Caterpillar All Rights Reserved 10 TWO POSITION THREE POSITION INFINITE POSITIONING UNIDIRECTIONAL BIDIRECTIONAL DOUBLE ACTING INTERNAL PASSAGEWAYS HYDRAULIC MOTORS VARIABLE DISPLACEMENT NON-COMPENSATED... DRAIN LINE d29548 RENR5328 April 2002 44 21 20 16 52 22 49 53 32 59 51 19 35 23 42 24 88 88 5090B Excavators Hydraulic System SJY1-UP 34 33 46 50 57 15 47 55 56 58 17 60 61 18 Main Control Valve © 2002 Caterpillar All Rights Reserved PSA3 PSA1 PSA2 67 PAC 65 PSA4 PIN 64 Pi1 DR4 Pi2 DR5 Pi5 Pi3 DR2 DR6 DR3 Pi6 63 PG f05439 DR1 69 TOUT Pilot Oil Manifold Printed in U.S.A Hydraulic Schematic 185-0379 MAIN . SENR5457 20 Page © 1992 Caterpillar All Rights Reserved Printed in U.S.A. SENR5457 November 1992 320 and 320 L Excavators Hydraulic. System BEA1-UP FBA1-UP GAA1-UP GHA1-UP GLA1-UP MAA1-UP PAA1-UP ANB1-UP BCB1-UP BDB1-UP MAB1-UP PAB1-UP AMC1-UP BBC1-UP BDC1-UP FBC1-UP GAC1-UP HBC1-UP CCD1-UP BDE1-UP ALF1-UP BEF1-UP DBG1-UP EAG1-UP GNG1-UP JTG1-UP AKH1-UP AXK1-UP BBL1-UP EGL1-UP BCN1-UP SBN1-UP BER1-UP BPR1-UP HKT1-UP RAW1-UP BRX1-UP BMZ1-UP © 2005 Caterpillar All Rights Reserved Printed in U.S.A. Pi4 HR R3 HL Pi2Pi1 AR5 aR5 aR4 aR3 aR2 aR1 aL1. Excavator Hydraulic System 320D: MCH1-UP FAL1-UP CXY1-UP JGZ1-UP 320D L: MDE1-UP KGF1-UP DHK1-UP PHX1-UP © 2007 Caterpillar All Rights Reserved Printed in U.S.A. MOTOR GP - PISTON (TRAVEL) FILTER GP MOTOR GP