INTERACTIVE SCHEMATIC Bookmarks *This document is best viewed at a screen resolution of 1024 X 768. X Options Features 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. Cover Page Tables Component Connector Schematic Machine Views Chassis View Cab View Engine View The Bookmarks panel will allow you to quickly navigate to points of interest. EC-C2 EC-C3 *Due to different monitor sizes and PDF reader preferences there may be some variance in linked schematic locations E-C60 E-C61 Click here to save a copy of this interactive schematic to your desktop VIEW ALL CALLOUTS EC-C1 Click on any text that is BLUE and underlined. These are hyperlinks that can be used to navigate the schematic and machine views. When only one callout is showing on a machine view, clicking on this button will make all of the callouts visible. This button is located in the top right corner of every machine view page. ELECTRICAL SYMBOLS HOTKEYS (Keyboard Shortcuts) BASIC HYDRAULIC COMPONENT SYMBOLS T FUNCTION Zoom In Zoom Out Fit to Page Hand Tool Find KEYS “CTRL” / “+” “CTRL” / “-” “CTRL” / “0” (zero) “SPACEBAR” (hold down) “CTRL” / “F” Pressure Switch Temperature Switch Level Switch Flow Switch Circuit Breaker Click here to view the Schematic Symbols and Definitions page Pump or Motor Variability Fluid Conditioner Spring (Adjustable) SCHEMATIC SYMBOLS AND DEFINITIONS INTERNAL PASSAGEWAYS VALVES ENVELOPES Two Position One Position Three Position PORTS Two-way Three-Way FLOW IN ONE DIRECTION FLOW ALLOWED IN EITHER DIRECTION Infinite Positioning Two Position PARALLEL FLOW PUMPS Unidirectional Three Position Unidirectional CONTROL AB AB P T P T Single Acting Spring Loaded Fluid Conditioner Spring (Adjustable) Spring Pressure Compensation Control Valves Line Restriction (Variable) Restriction Line Restriction (Fixed) Line Restriction Variable and Pressure Compensated 2-Section Pump Attachment Pump: Variable and Pressure Compensated Bidirectional MOTORS Double Acting Infinite Position CHECK Basic Symbol Variability FIXED DISPLACEMENT Shifted Position Normal Position Pump or Motor Bidirectional VARIABLE DISPLACEMENT NON- COMPENSATED CYLINDERS Four-Way BASIC HYDRAULIC COMPONENT SYMBOLS FIXED DISPLACEMENT CROSS FLOW ACCUMULATORS Shuttle Unidirectional VARIABLE DISPLACEMENT NON- COMPENSATED Pilot Controlled Spring Loaded Gas Charged Unidirectional PILOT CONTROL Bidirectional ROTATING SHAFTS RELEASED PRESSURE External Return Bidirectional Unidirectional Internal Return Bidirectional REMOTE SUPPLY PRESSURE Simplified Complete Internal Supply Pressure Hydraulic Pneumatic Energy Triangles COMBINATION CONTROLS Solenoid Solenoid or Manual Solenoid and Pilot Solenoid and Pilot or Manual MEASUREMENT LINES Servo Thermal Detent Crossing Joining Manual Shutoff General Manual Push Button Pedal Spring Vented Pressurized Transducer (Fluid) Transducer (Gas / Air) M Generator Electric Motor Flow Return Above Fluid Level Return Below Fluid Level ELECTRICAL SYMBOLS HYDRAULIC SYMBOLS - ELECTRICAL G Temperature Pressure FLUID STORAGE RESERVOIRS MANUAL CONTROL Push-pull Lever MAIN AUX. T Pressure Switch Pressure Switch (Adjustable) Temperature Switch Electrical Wire Pressure Switch Temperature Switch BASIC ELECTRICAL COMPONENT SYMBOLS Level Switch Flow Switch Circuit Breaker HARNESS AND WIRE SYMBOLS Wire, Cable, or Harness Assembly Identification: Includes Harness Identification Letters and Harness Connector Serialization Codes (see sample). Fuse: A component in an electrical circuit that will open the circuit if too much current flows through it. Switch (Normally Open): A switch that will close at a specified point (temp, press, etc.). The circle indicates that the component has screw terminals and a wire can be disconnected from it. Switch (Normally Closed): A switch that will open at a specified point (temp, press, etc.). No circle indicates that the wire cannot be disconnected from the component. AG-C4 111-7898 Part Number: for Connector Plug 1 L-C12 3E-5179 2 Ground (Wired): This indicates that the component is connected to a grounded wire. The grounded wire is fastened to the machine. Receptacle Pin or Socket Number Plug Ground (Case): This indicates that the component does not have a wire connected to ground. It is grounded by being fastened to the machine. Harness Identification Letter(s): (A, B, C, AA, AB, AC, ...) Harness Connector Serialization Code: The "C" stands for "Connector" and the number indicates which connector in the harness (C1, C2, C3, ...) Reed Switch: A switch whose contacts are controlled by a magnet. A magnet closes the contacts of a normally open reed switch; it opens the contacts of a normally closed reed switch. T Sender: A component that is used with a temperature or pressure gauge. The sender measures the temperature or pressure. Its resistance changes to give an indication to the gauge of the temperature or pressure. Relay (Magnetic Switch): A relay is an electrical component that is activated by electricity. It has a coil that makes an electromagnet when current flows through it. The electromagnet can open or close the switch part of the relay. Solenoid: A solenoid is an electrical component that is activated by electricity. It has a coil that makes an electromagnet when current flows through it. The electromagnet can open or close a valve or move a piece of metal that can do work. Magnetic Latch Solenoid: An electrical component that is activated by electricity and held latched by a permanent magnet. It has two coils (latch and unlatch) that make electromagnet when current flows through them. It also has an internal switch that places the latch coil circuit open at the time the coil latches. L-C12 3E-5179 5A Fuse (5 Amps) Harness identification code: This example indicates wire group 325, wire 135 in harness "AG". 9X-1123 Component Part Number 325-AG135 PK-14 Wire Gauge Wire Color 1 2 Deutsch connector: Typical representation of a Deutsch connector. The plug contains all sockets and the receptacle contains all pins. 1 2 Sure-Seal connector: Typical representation of a Sure-Seal connector. The plug and receptacle contain both pins and sockets. UENR1259-06 October 2017 M316D, M318D, M322D, M320D2 And M322D2 Wheeled Excavator M318D MH, M322D MH, M322D2 MH And M324D2 MH Material Handler Hydraulic System M316D: P6K1-UP D6W1-UP M318D: P8L1-UP D8W1-UP M322D: P2T1-UP D2W1-UP M322D2: EN21-UP M318D MH: P9M1-UP D9X1-UP M322D MH: D3X1-UP P3W1-UP M320D2: EN81-UP M322D2 MH: EN91-UP M324D2 MH: EN31-UP © 2017 Caterpillar, All Rights Reserved Printed in U.S.A. COMPONENT LOCATION Component Location Component Location - Part Machine Schematic Number Location Location Description 1 C-9 2 C-10 8U-2624 3 J-8 Accumulator Gp - Pilot 8U-6159 4 Cap - Breather (Hydraulic Tank) 194-7849 5 Control Gp -Hyd Hand (Stabilizer / Blade) Accumulator Gp - Brake 235-5646 Accumulator Gp - Osc Axle C-14 255-8547 50 Accumulator Gp - Ride Control 340-3267 51 B-12 Control Gp - Pilot Operated (VA Boom) 112-5704 52 E-12 A-5 Cylinder Gp - Hydraulic Cab Riser Note A 53 H-13 Cylinder Gp - MH Boom Note A 54 249-4939 55 257-6104 6 E-13 Note A 7 H-6 Cylinder Gp - Bucket Note A 8 G-4 Cylinder Gp - Dozer Blade Note A 9 J-12 Cylinder Gp - Osc Axle Lock Note A 10 J-8 Cylinder Gp - Stabilizer Note A 11 Cylinder Gp - Steering Note A Cylinder Gp - Stick Filter Gp - Main Pump Oil Return Part Machine Schematic Number Location Location Description Accumulator Gp - Boom Damping MH Cylinder Gp - Boom Filter Gp - Fan Circuit High Pressure Auxillary Attachments Cylinder Gp - MH Dozer Blade F-14 H-10 B-14 E-14 J-6 I-14 Cylinder Gp - MH Stick Note A 56 J-7 Cylinder Gp - Offset Boom Tilt Note A 57 I-12 12 I-8 Cylinder Gp - Quick Coupler Note A 58 H-8 Note A 13 G-5 Cylinder Gp - VA Boom Note A 59 H-8 227-6000 14 C-6 Motor Gp - Control (12.5KW Generator) 227-5999 60 F-16 15 A-4 Motor Gp - Control (15KW Generator) 152-7371 61 D-16 Motor Gp - Reversable Fan 297-1571 62 D-5 M316D , M318D 193-5973 M322D, M318D MH , M322D MH 290-5479 J-14 Filter Gp - Pilot High Pressure 145-7750 16 C-8 Solenoid As - Hyd Modulation (Implement Pump) 216-1397 63 C-8 Filter Gp - Swing Pump & Implement Pump Drain 8U-0198 17 A-7 Valve As - Cab Lowering (Inside Cab) 226-9860 64 B-10 Filter Gp - Swing Pump Make Up Circuit 109-7288 18 C-6 Valve As - Cab Lowering (Outside Cab) 226-9860 65 B-10 Filter Gp - Travel Motor Drain 8U-0198 19 A-4 Valve Gp - 2nd High Pressure Control 252-1269 66 E-9 Motor Gp - Fan 281-6268 20 D-6 Valve Gp - Anti Drift (Multi Combination Valve) 67 G-2 21 C-5 22 J-9 68 G-5 23 E-12 Valve Gp - Boom Lowering Control Valve 254-2675 69 24 B-6 Valve Gp - Check (Offset Boom) M316D 238-7021 70 I-12 Valve Gp - Control (12.5KW Generator) 192-3177 71 F-16 Valve Gp - Control (15KW Generator) 334-7445 72 D-16 Valve Gp - Control (Hydraulic Hammer) 252-5984 73 J-1 Valve Gp - Control (Quick Coupler) 340-3327 74 G-8 Valve Gp - Control (VA Boom) 251-8038 75 Motor Gp - Swing M316D 152-7374 M318D, M322D, M318D MH , M322D MH 152-7371 Motor Gp - Travel 291-3711 Pedal Gp - Travel Valve with Magnet 254-2685 with out Magnet 254-2684 M316D 251-8032 M318D , M318D MH 251-8034 M322D , M322D MH 251-8036 non MH 329-5735 MH 329-5736 Pump Gp - Fan 281-6269 Pump Gp - Implement Pump Gp - Pilot / Steering / Brake / Aux Pump Gp - Swing 25 B-7 26 C-3 27 B-8 M316D 190-8213 M318D , M318D MH 190-8199 28 B-6 M322D , M322D MH 196-8429 292-2769 Swivel Gp Tank As - Hydraulic M318D, M322D, M318D MH, M322D MH 254-0488 Valve Gp - Anti Drift (Stick) M316D 254-0489 M318D, M322D, M318D MH, M322D MH 254-0488 76 Valve Gp - Manual Shutoff 277-0954 77 H-3 78 F-12 Valve Gp - Medium Pressure Control G-13 MPF Only 254-2643 MPF & Offset 254-2644 MPF & Joystick Steering 254-2646 M318D 321-8799 MPF, Offset & Joystick Steering 254-2647 MPF & HCR 304-9344 MPF, HCR & Joystick Steering 304-9345 M322D 338-8189 338-8319 M322D MH 338-8329 30 E-8 B-15 145-7166 338-8199 M318D MH G-6 E-14 Valve Gp - Manual Boom Lowering M316D Valve Gp - Diverter Bucket Cyl (Head End) A-13 Valve Gp - Multi Combination E-15 252-5983 79 G-3 290-9591 31 G-4 Valve Gp - Pilot (Joystick Steering) 242-9670 80 H-11 290-9589 32 G-3 D-5 Valve Gp - Reversable Fan 308-1191 81 M316D 340-3336 Valve Gp - Selector (Pattern Changer) not MH's 243-5227 82 J-2 M318D 265-7154 Valve Gp - Solenoid (Dozer Blade) 196-7544 83 J-11 Valve Gp - Diverter Bucket Cyl (Rod End) Valve Gp - Main Control 29 H-5 M316D 254-0489 33 F-4 M318D MH 251-8026 Valve Gp - Solenoid (Heavy Lift) 196-7486 84 C-12 M322D 251-8025 Valve Gp - Solenoid (LH) not MH's 295-7688 85 H-10 M322D MH 251-8027 Valve Gp - Solenoid (MH Dozer Shutoff) 291-6475 86 I-6 Valve Gp - Pilot Manifold 254-2662 34 B-11 Valve Gp - Solenoid (RH) not MH's 295-7689 87 H-9 Valve Gp - Pilot Operated (Boom / Bucket) 243-4046 35 E-11 Valve Gp - Solenoid (Ride Control) 299-3659 88 H-10 Valve Gp - Pilot Operated (Stick / Swing) 243-4046 36 E-12 Valve Gp - Solenoid (Smart Boom) 265-7156 89 F-10 Valve Gp - Solenoid (Stabilizer) 196-7543 90 Valve Gp - Steering M316D, M318D 205-6215 M322D, M318D MH, M322D MH 187-3774 37 E-10 Valve Gp - Steering Priority 188-1814 38 C-8 Valve Gp - Travel Brake 322-0100 39 C-9 Valve Gp - Travel Bypass (Fast Travel) 265-7287 40 G-4 Valve Gp - Stick Lowering Control 254-2676 91 Valve Gp - VA Boom Lowering Control Valve 254-2677 92 I-7 I-14 I-15 G-8 TAP TABLE Tap Location Pressure and Sampling Tap Number Description Schematic Location AA Swing Pump Pressure C-6 BB Swing Motor Pressure B-6 CC Implement Pump Pressure B-7 DD Accumulator Service Brake (1st Brake) C-10 EE Brake Pressure C-10 FF Accumulator Service Brake (2nd Brake) C-9 GG Travel Pedal Pilot Pressure B-12 HH Travel Motor Control B-13 KK Travel Motor Pressure I-10 LL Clutch Release J-10 MM Transmission Brake Pressure I-10 NN Transmission Clutch Pressure I-10 P1 Implement Pump Outlet Pressure D-4 P2 Load Sense D-4 P3 Pilot Pressure D-4 P4 Pilot / Steering / Brake / MPF / Pump Outlet Pressure D-4 P5 Implement Pump Power Shift Pressure D-4 P6 Swing Pump Power Shift Pressure D-4 P7 Fan Pump Outlet Pressure D-4 P8 Joystick Steering Pressure D-4 16 15 14 13 12 11 10 8 9 7 6 5 4 3 2 (82) VALVE GP SELECTOR / FLOW CONTROL 243-5227 (55) CYLINDER GP MH DOZER BLADE 249-4939 SCHEMATIC FOR MH STICK CYLINDER WITHOUT STICK LOWERING CONTROL VALVES (56) CYLINDER GP 1 (73) VALVE GP CONTROL (HAMMER) 252-5984 MH STICK NOTE A P STICK U MB T1 BRAKE VALVE Z1 B T MIN A3 T2 EB MB B MR MR X X A T RELEASABLE CHECK VALVE OP A K MM b3 B3 (80) VALE GP PILOT (JOYSTICK STEERING) 242-9670 (51) ACCUM GP RIDE CONTROL 340-3267 M A1 B1 CAB UP / CAB DOWN T A B (88) VALE GP SOLENOID (RIDE CONRL) 299-3659 B A 1 2 a3 SWIVEL Y2 STICK GENERATOR OP 12.5 KW (60) MOTOR GP GENERATOR 227-5999 T B01 TO TANK SW L SW R STICK IN 4 6 3 A B HCR/OFFSET OP A MEDIUM PRESSURE FUNCTION OP B T A B a4 b4 1 T LUDV A X MR MR X A T 1 2 UP TO MAIN VALVE PORT P Psta STICK SW L SW R STICK IN P B5 4 2 b2 OUT IN T P B MB A B B 6 A (92) VALVE GP VA BOOM LOWERING 254-2677 T A a5 MR X A T 4 1 2 1 1 FWD REV 2 T (74) CONTROL QUICK COUPLER 340-3327 CONNECTS AT LOCATION C-3 CONNECTS AT LOCATION D-3 BOOM DOWN BCT CL BCT OP BOOM A X MR MR X A T P T P B L B1 R L L P T (69) VALVE GP BOOM LOWERING 254-2675 Pst B A b0 VA BOOM OP B0 A0 P AUX 1 b5 B5 A5 b4 L B4 DOZER/ STABILIZER BOOM A4 X PST A’ Y B (33) VALVE GP MAIN CONTROL M316D 340-3336 M318D 265-7154 M318D MH 251-8026 M322D 251-8025 M322D MH 251-8027 b2 A b3 (37) VALVE GP STEERING M316, M318 205-6215 M322D + MH’S 187-3774 Pst L a0 DA K MP LS P P AUX 2 a5 a0 (66) VALVE GP 2nd HIGH PRESSURE CONTROL 252-1269 S53 a4 B3 STICK S52 A3 b2 B2 A2 b1 B1 BUCKET A1 I UP JOYSTICK RIGHT HAND P T T SHUT OFF BALL VALVES (FOR SINGLE OR DOUBLE ACTING TOOL) A’ X a2 B01 G A01 MULTI COMBINED VALVE OP S5 T E PMP a1 Psta L a01 CONNECTION POINT FOR RIDE CONTROL OPTION T (81) VALVE GP REV FAN 308-1191 (62) MOTOR GP REV FAN 297-1571 REMOTE PRESSUE TAPS P1 IMPLEMENT PUMP P2 LOAD SENSE OUTLET PRESSURE PRESSURE P3 PILOT PRESSURE P4 PILOT,STEERING BRAKE,MPF,PUMP OUTLET PRESSURE P2 B P4 T (38) VALVE GP STEERING PRIORITY 188-1814 P5 T S HYDRAULIC CIRCUIT COLOR DESCRIPTIONS IMPLEMENT PUMP OUTPUT PILOT PUMP OUTPUT DOZER CYLINDER / STABILIZER CYLINDER CONTROL CIRCUIT SWING PUMP SUPPLY CIRCUIT VA BOOM CYLINDER CONTROL CIRCUIT OSC AXLE CYLINDER CONTROL CIRCUIT IMPLEMENT PUMP LOAD SENSE K B 1 2 M2 SA GEAR SHIFT B K B BB LS TRAVEL MOTOR CONTROL PMP MAIN PUMP CONTROL SWING PUMP CONTROL TO MAIN VALVE PORT P Psta A8 TO PILOT MANIFOLD PORT S M8 A7 D7 M7 A6 M6 T1/1 A5 M5 T1/2 K FF DD STEERING PRIORITY P VALVE S1 m2 TRAVEL BRAKE VALVE m1 GEAR 1 P P T N P P1 b5 B5 (1) ACCUMULATOR GP BRAKE 235-5646 A (54) CYLINDER GP BOOM NOTE A SWING MOTOR G V g max ENGINE PS R FA FA1 MB T2 C IMPLEMENT PUMP M322D /M322D MH (DIFFERENT TO IMPLEMENT PUMP M316D / M318D / M318D MH) X Z MZ X2 G FS MH Z R M A G (24) PUMP GP FAN 281-6269 MA X1 T1 P A V g max S V g min NOTE A: SEE PARTS MANUAL FOR SPECIFIC CYLINDER PART NUMBERS BB (27) PUMP GP PILOT / STEERING BRAKE / AUX M316D, M318D, M322D 329-5735 M318D MH, M322D MH 329-5736 ACCESS FROM GROUND (26) PUMP GP IMPLEMENT M322D , M322D MH 251-8036 A B R1 CC OFFSET BOOM CYLINDER / MEDIUM PRESSURE CONTROL CIRCUIT B V g min M1 SWING MOTOR SUPPLY CIRCUIT TRANSMISSION OIL CIRCULATION PUMP FAN PUMP SUPPLY CIRCUIT BRAKE CYLINDER CONTROL CIRCUIT DOZER BLADE CYLINDER MH FE R2 T1 T2 (65) VALVE AS CAB LOWERING (OUTSIDE) 226-9860 SWING MOTOR CONTROL CIRCUIT MAIN PUMP CONTROL CIRCUIT BOOM CYLINDER CONTROL CIRCUIT 2ND HIGH PRESSURE OPTION P8 JOYSTICK STEERING FAN PUMP OUTLET PRESSURE PRESSURE MX T2 ONLY M313D S INSIDE CAB P7 T1 M A PILOT PUMP (64) VALVE AS CAB LOWERING (INSIDE) 226-9860 A5 Y1 (16) FILTER GP PILOT 145-7750 B (34) VALVE GP PILOT MANIFOLD 254-2662 BOOM Y3 IMPLEMENT PUMP (2) ACCUMULATOR GP BRAKE 235-5646 SP PST MULTI COMBINATION TOOLS / HAMMER OPTION TRAVEL MOTOR CONTROL CIRCUIT P6 P5 P8 (14) FILTER GP FAN 227-6000 (21) MOTOR GP SWING M316D 152-7374 M318D, M322D, M318D MH, AND M322D MH 152-7371 AA (4) ACCUMULATOR GP PILOT 8U-6159 b5 Y2 (28) PUMP GP SWING M316D: 190-8213 M318D + MH: 190-8199 M322D + MH: 196-8429 (18) FILTER GP SWING PUMP 109-7288 Y1 S2 DS2 GEAR 2 Y2 LD AEC GG HH B2 DS P TRAVEL ACTIVATION VALVE OR TRAVEL PILOT CONTROL (63) SOLENOID AS IMPLEMENT ALL VERSIONS 216-1397 CF FAN PUMP (76) VALVE GP MANUAL BOOM LOWERING 145-7166 A1 EF SWING PUMP PILOT MANIFOLD A2 SWING BRAKE (50) ACCUMULATOR GP BOOM DAMPING 255-8547 A3 OSC AXLE REST SCHEMATIC FOR MH BOOM CYLINDER WITHOUT BOOM LOWERING CONTROL VALVES A4 DS1 B1 IMPLEMENT LOCK a5 EE a3 HEAVY LIFT OP (84) VALVE GP SOLENOID 196-7486 HEAVY LIFT CONTROL OPTION QUICK COUPLER CONTROL CIRCUIT P7 S D STEERING CONTROL CIRCUIT BUCKET CYL CONTROL CIRCUIT / BUCKET ADJ / GRAPPLE ROTATE P6 REV FAN P SUPPLY LINE DRAIN / RETURN LINE STICK CYLINDER CONTROL CIRCUIT TRANSMISSION CLUTCH CONTROL CIRCUIT (39) VALVE GP TRAVEL BRAKE 322-0100 a5 B Y A P3 MAIN VALVE SECTION SPOOL BOOM CYLINDER L S51 a1 A TO GEN MOTOR CASE DRAIN BCT OP BOOM T a2 a3 T L BCT CL b1 TRAVEL a3 a4 a5 (75) VALVE GP CONTROL (VA BOOM) 251-8038 (20) MOTOR GP FAN 281-6268 P TO MAIN VALVE PORT P AUX 2 DOWN PST T A01 LUDV BOOM A5 LSX TO MAIN VALVE PORT LS AUX SW R IN b01 LD P P TO IMP PUMP PORT X SW L STICK 4 3 F JJ C 2 (79) VALVE GP MULTI COMBINATION 252-5983 P1 TO MAIN VALVE PORT LS 1 DIVERTER BALL VALVES BUCKET b3 FAN MOTOR TO TANK 4 (32) VALVE GP DIVERTER BUCKET 290-9589 QUICK DISCONNECT TRAVEL SPOOL IN LARGED VIEW MAIN RETURN FILTER B01 J H (40) VALVE GP TRAVEL BYPASS 265-7287 TRAVEL BYPASS (FT) b4 (61) MOTOR GP GENERATOR GEN 152-7371 T 4 (67) VALVE GP ANTI-DRIFT M316D 254-0489 ALL OTHERS 254-0488 a3 Y GENERATOR OP 15 KW D 8 Psta REMOTE PRESSUE TAPS (72) VALVE GP CONTRTOL 334-7445 2 X UP P T 6 (77) VALVE GP MANUAL SHUTOFF 277-0954 QUICK DISCONNECT (68) VALVE GP ANTI-DRIFT (STICK) M316D 254-0489 ALL OTHERS 254-0488 JOYSTICK RIGHT HAND T 3 OUT P1 (31) VALVE GP DIVERTER BUCKET 290-9591 SMART BOOM OP 4 3 7 JOYSTICK LEFT HAND (8) CYLINDER GP BUCKET NOTE A (13) CYLINDER GP STICK NOTE A S52 A5 b1 a1 A01 3 STICK b0 a2 2 1 0 JOYSTICK STEERING OP B JOYSTICK LEFT HAND BOOM b5 a0 b0 OUT (54) CYLINDER GP BOOM NOTE A b5 TO PILOT MANIFOLD PORT S Y2 3 DOWN PMP b3 Y1 2 P TO MAIN VALVE PORT P AUX 2 X A R TRAVEL PEDAL TO MAIN VALVE PORT LS AUX B MR (35) VALVE GP (23) PEDAL GP PILOT (BOOM / BUCKET) TRAVEL VALVE W / MAGNET 254-2685 243-4046 WO / MAGNET 254-2684 (52) VALVE GP PILOT (VA BOOM) 112-5704 VA BOOM OP A (36) VALVE GP PILOT (STICK / SWING) 243-4046 (6) CONTROL GP HAND (STAB / BLADE) 257-6104 SWIVEL A “SPOOL IN SPOOL” DOZER STABILIZER BOOM E A PST BLCV OP MR BLCV OP BLCV OP B MA A (29) SWIVEL GP 292-2769 MR (89) VALE GP SOLENOID (SMART BOOM) 265-7156 JOYSTICK STEERING PRIORITY PRESSURE COMPENSATOR. ONLY INSTALLED WITH JOYSTICK STEERING VALVE P 1 A (69) VALVE GP BOOM LOWERING 254-2675 (69) VALVE GP BOOM LOWERING 254-2675 2 3 5 A 4 0 TO BE CONNECTED IF SMART BOOM IS NOT INSTALLED. (50) ACCUMULATOR GP BOOM DAMPING 255-8547 (76) VALVE GP MANUAL BOOM LOWERING 145-7166 B B BOOM B5 T SCHEMATIC FOR MH BOOM CYLINDER WITH BOOM LOWERING CONTROL VALVES (OPTIONAL) A01 5 B X MR JOYSTICK LEFT HAND P P VALVE GP PILOT (STICK / SWING) SEE LOCATIONE-13 OUT GEN F 1 (29) SWIVEL GP 292-2769 HAMMER OP Possible configurations BLCV,SLCV,Anti Drift Valves M300D Item Anti Drift Number Valve Location BLCV SLCV OR X X X 7 Boom Head End X X X 92 VA Boom Head End X Stick Head End 13 X X X 13 Stick Rod End X 31 Bucket Head End Note: Not all configurations shown on Hydraulic Schematic. 2ND HIGHPRESSURE OP (71) VALVE GP CONTRTOL 192-3177 2 4 3 QUICK COUPLER OP BLCV OP B (87) VALE GP SOLENOID (RH) 295-7689 (78) VALE GP MEDIUM PRESS. CONT. MPF ONLY 254-2643 MPF AND OFFSET 254-2644 MPF AND JOYSTICK STEER 254-2646 MPF, OFFSET AND JOYSTICK STEER 254-2647 MPF AND HCR 304-9344 MPF, HCR AND JOYSTICK STEER 304-9345 3 (7) CYLINDER GP BOOM NOTE A (69) VALVE GP BOOM LOWERING 254-2675 BLCV OP SMART BOOM OP G 2 (58) CYLINDER GP QUICK COUPLER NOTE A VA BOOM A B HYDRAULIC CAB RISER 1 6 5 b0 b5 Y1 (59) CYLINDER GP VA BOOM NOTE A (51) ACCUM GP RIDE CONTROL 340-3267 JOYSTICK STEERING V. OP A 1 3 STICK BLCV A BUCKET ADJUST T b5 5 P BLCV G 2 KK A 6 1 TO MAINVALVE SECTION DOZER/STABILIZER B4 BOOM GRAPPLE ROTATE 4 T P A PST DS PILOT MANIFOLD (85) VALE GP SOLENOID (LH) 295-7688 A3 5 T MK RIDE CONTROL OPTION (53) CYLINDER GP CAB RISER NOTE A STICK H M1 V2 B LS STEERING CYLINDER MA NN OFFSET BOOM TILT a5 B01 AEC C2 V1 SA MAIN VALVE A C1 BB P TO MAINVALVE SECTION DOZER/STABILIZER A4 IN T A B B1 Z2 LS AUX B A WHEEL BRAKE A EK (57) CYLINDER GP OFFSET BOOM TILT NOTE A (70) VALVE GP CHECK 238-7021 A (86) VALVE GP SOLENOID (MH DOZER SHUTOFF) 291-6475 TO PORT P AT DOZER/STABILIZER VALVES STABILIZER SHUT OFF VALVE OP P (12) CYLINDER GP STEERING NOTE A FWD SLCV OP MR SLCV OP MAX MS SCHEMATIC FOR MH STICK CYLINDER WITH STICK LOWERING CONTROL VALVES (OPTIONAL) (91) VALVE GP (91) VALVE GP STICK LOWERING CONT STICK LOWERING 254-2676 (56) CYLINDER GP CONT MH STICK NOTE A 254-2676 b3 S GEAR I OSC. AXLE LOCK REV a3 T1 G TRAVEL MOTOR THIS HOSE ROUTING IS VALID IF THE MACHINE IS EQUIPPED WITH A JOYSTICK PATTERN CHANGER (90) VALVE GP SOLENOID 196-7543 MLS B3 L TO PORT B AT DOZER/STABILIZER CYLINDER B1 ANTI DRIFT VALVE OP DOZER SHUT OFF VALVE DOZER BLADE (9) CYLINDER GP DOZER BLADE NOTE A EL (11) CYLINDER GP STABILIZER NOTE A (10) CYLINDER GP OSC. AXLE LOCK NOTE A (22) MOTOR GP TRAVEL M316D, M318D, M322D AND M318D MH, M322D MH 291-3711 LL Z1 b3 X STABILIZER WHEEL BRAKE CLUTCH RELEASE B (FOR M313D...M316D POSITION OF THE INLET ELEMENT IS BETWEEN STICK AND TRAVEL) (83) VALVE GP SOLENOID 196-7544 A OUT J (3) ACCUM GP OSC. AXLE 8U-2624 PATTERN CHANGER OP G STICK S M1 R1 R2 T1 T2 (25) PUMP GP IMPLEMENT M316D 251-8032 M318D, M318D MH 251-8034 B LINE PATTERNS LOCATION B-7 FOR TAP DESIGNATION Pressure Line Pilot / Load Sensing Pressure Drain / Return Lines Component Group Attachment Air Line CALLOUTS MAIN RETURN FILTER a5 MAIN VALVE SECTION SPOOL BOOM CYLINDER (5) CAP BREATHER 194-7849 TANK (19) FILTER GP TRAVEL MOTOR 8U-0198 BREATHER CAP A (30) TANK AS M316D 338-8199 M318D 321-8799 M322D 338-8189 M318D MH 338-8319 M322D MH 338-8329 (17) FILTER GP SWING PUMP & IMP PUMP DRAIN 8U-0198 MAIN RETURN FILTER (15) FILTER GP MAIN PUMP M316D 193-5973 M318D, M322D AND MH’S 290-5479 Taps (Pressure, Sampling, Sensor - by letter) 52 Components (By number) THIS SCHEMATIC IS FOR THE M316D, M318D, M322D, M320D2 AND M322D2 WHEELED EXCAVATOR M318D MH, M322D MH, M322D2 MH, AND M324D2 MH MATERIAL HANDLER HYDRAULIC SYSTEM MEDIA NUMBER: UENR1259-06 SCHEMATIC PART NUMBER (MACHINE): 361-4819, CHANGE: 00, VERSION: EY SCHEMATIC PART NUMBER (CYLINDER MH): 308-7476, CHANGE: 02, VERSION: EY SCHEMATIC PART NUMBER (RIDE CONTROL): 318-8778, CHANGE: 00, VERSION: EY N1 N2 N3 a5 YY Components are shown installed on a fully operable machine with the key switch and engine off, armrest position switch up, limit switches with opened windows, and transmission control in neutral position. Refer to the appropriate Service Manual for Troubleshooting, Specifications and Systems Operations. 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 A VALVE GROUP VIEW VIEW ALL CALLOUTS OSC AXLE REST SWING BRAKE HEAVY LIFT IMP LOCK GEAR SHIFT 84 34 JJ 4 HH GG TRAVEL MOTOR SWING PUMP MAIN PUMP TRAVEL PILOT VA BOOM VIEW VIEW ALL CALLOUTS 92 59 STANDARD UNDERCARRIAGE VIEW 29 VIEW ALL CALLOUTS 90 10 11 11 12 90 3 22 LL KK NN MM STANDARD BOOM AND STICK VIEW VIEW ALL CALLOUTS 8 13 7 RIDE CONTROL VIEW VIEW ALL CALLOUTS 85 87 88 51 REVERSE FAN VIEW VIEW ALL CALLOUTS 81 62 REAR DOZER VIEW D SERIES 83 9 VIEW ALL CALLOUTS QUICK COUPLER CYLINDER VIEW VIEW ALL CALLOUTS 8 58 PATTERN CHANGER OPTION VIEW VIEW ALL CALLOUTS 82 OFFSET BOOM VIEW VIEW ALL CALLOUTS 70 57 MATERIAL HANDLER DOZER BLADE VIEW 86 55 VIEW ALL CALLOUTS MATERIAL HANDLER BOOM VIEW VIEW ALL CALLOUTS 91 56 50 54 76 69 MATERIAL HANDLER BELOW CAB COMPONENTS VIEW 2 39 37 DD FF EE 1 16 VIEW ALL CALLOUTS MEDIUM PRESSURE CONTROL VIEW VIEW ALL CALLOUTS HCR / OFFSET MEDIUM PRESS GRAPPLE / ADJ JOYSTICK STEERING 78 MATERIAL HANDLER AND OPTIONAL COMPONENTS VIEW 53 78 89 75 68 26 80 73 79 67 74 VIEW ALL CALLOUTS HYDRAULIC CAB RISER VIEW VIEW ALL CALLOUTS 65 ON THE LH SIDE RH CAB VIEW 64 ON THE RH SIDE OF CAB FLOOR D SERIES STANDARD HYDRAULIC COMPONENTS VIEW VIEW ALL CALLOUTS 14 66 34 68 16 1 2 38 EE 37 20 17 15 30 CC 5 33 24 FF 40 AA BB 18 63 28 25 19 21 27 DD D SERIES CAB COMPONENTS VIEW VIEW ALL CALLOUTS 36 35 6 23 39 52 BUCKET CYLINDER OPTIONS VIEW 31 32 VIEW ALL CALLOUTS 8 77 15 KW GENERATOR VIEW 72 61 VIEW ALL CALLOUTS 12.5 KW GENERATOR VIEW 71 60 VIEW ALL CALLOUTS