Page 1 Service Guide Crawler Excavator...
Page 2: Table Of Contents
INDEX Ⅰ. Specification Comparisions --------------------------------------------------------------------------------------------- 3 Ⅱ.Hydraulic System -------------------------------------------------------------------------------------------------------------- 7 1.Outline of Hydraulic system ------------------------------------------------------------------------------------------------- 8 2.Hydraulic Symbol --------------------------------------------------------------------------------------------------------------- 9 3.Hydraulic Circuit ---------------------------------------------------------------------------------------------------------------- 15 3-1.Main Circuit 3-2.Pilot Circuit (Crawler Type) 3-3.Pilot Circuit (Wheel Type) 3-4.Oil Return Circuit 4.Main Components --------------------------------------------------------------------------------------------------------------- 19 4-1.Main Control Valve 4-2.Main Pump 4-3.Pilot Circuit...
Page 3 1-3. Monitor Panel (Cluster) 1-4. Communication 1-5. Automatic Deceleration System 1-6. Power Boost System 1-7. Travel Speed Control System 1-8. Automatic Warming Up & Engine Overheat prevention 1-9. Anti - Restart Function 1-10. Location of Solenoid Valves 1-11. Work/Power Mode Selection 1-12.
Page 4: Ⅰ.specification Comparisions
Ⅰ.Specification Comparisions Page3 Construction Equipment...
Page 5 R140LC-7 Hyundai Komastu Hitachi Unit R140-7 PC130-6 312C ZX120 13980 Oper. Weight 13050 12200 12200 102/2100 Power, SAE net HP/rpm 86/2200 103/2100 DIN net 87/2200 91/1950 85/2100 0.58 Bucket PCSA cu m CECE cu m 0.45 0.45 Cummins Engine Komatsu Isuzu B3.9-C...
Page 6 R160LC-7 Hyundai Komastu Hitachi Unit R160LC-7 PC160-6 315C ZX160LC 17400 Oper. Weight 16530 16000 15600 116/2100 Power, SAE net HP/rpm 104.5/2100 118/2100 DIN net 106/2100 111/2150 100/1950 0.70 Bucket PCSA cu m 0.58 0.65 0.60 CECE cu m 0.53 0.55 0.55...
Page 7 R210LC-7 Hyundai Komastu Hitachi Unit R210LC-7 PC210-6 320B EX200-5 21700 Oper. Weight 21570 20518 18800 143/2100 Power, SAE net HP/rpm 133/2200 128/1800 133/1950 145/2100 DIN net 130/1800 135/1950 0.92 Bucket PCSA cu m 0.86 0.80 0.80 CECE cu m 0.70 0.70...
Page 8: Ⅱ.hydraulic System
Ⅱ.Hydraulic System Page7 Construction Equipment...
Page 9: Outline Of Hydraulic System
1.Outline of Hyd. System: the equipment to transmit the power by oil flow -Charecteristic of hydraulic oil : incompressible,automatic lubrication,less friction loss, higher cooling efficiency,more safety for overload,silent operation,precise control Hydraulic Tank Actuator Hydraulic Pump Control Valve -Hydraulic Tank : Oil Storage -Hyd.
Page 10: Hydraulic Symbol
2.Hydraulic Symbol Component Symbol Explanation Pipe or hose Color code -Main line -Supply line : red -Return line : blue -Suction line : green -Pilot line -Pilot line : brown -Drain or internal leakage -Drain or internal leakage line : green Line connected each other : Tee joint or drilled hole Line cross over without connection...
Page 11 Component Symbol Explanation Shut off valve Check valve Direction controlling device to prevent reverse flow -Without spring -With spring One check valve & pilot line in one block -Pilot check valve Hyd. tank Hyd. oil storage Filter Filtering all the dirt in hydraulic system Cooler Exhaust the heat of hyd.
Page 12 Component Symbol Explanation Hydraulic pump -One direction -fixed flow pump -Both direction, depending on rotation of pump Discharge amount of pump are flexible -Variable flow pump dependng on the pressure at actuator such as cylinder and motor Cylinder -Double acting : retract and extend by direction of oil supply -Single acting : retract by weight and extend by oil supply...
Page 13 Component Symbol Explanation -Reducing vave It is used for low pressure circuit. When the supplied pressure reach to required value, supplied oil is cut off Direction valve For double acting -2 way For single acting Double acting -3 way Controlling method of direction control valve Hand control lever Foot control pedal...
Page 14 Component Symbol Explanation Button control Hydraulic control by pilot pressure Electro-magnet control by electricity Automatic return control by spring tension Control valve is fixed with selected direction N : neutral position Motor Rotating device -Reversible motor -Irreversible motor : rotate one direction only Pressure switch Page13...
Page 15 Component Symbol Explanation Heater Accumulator Brake and clutch Applied by spring force Released by hydraulic pressure Shuttle valve Two check valve in one block Oil flow achieved by pressure difference between left & light hand side Logic valve Is combined with piston and orifice Area difference operates direction control valve Page14...
Page 16: Hydraulic Circuit
3. Hydraulic Circuit 3-1.Main Circuit Page15 Construction Equipment...
Page 17: 3-2.Pilot Circuit (Crawler Type)
3-2.Pilot Circuit (Crawler Type) Page16 Construction Equipment...
Page 18: 3-3.Pilot Circuit (Wheel Type)
3-3.Pilot Circuit (Wheel Type) Page17 Construction Equipment...
Page 19: 3-4.Oil Return Circuit
3-4.Oil Return Circuit Return Pressure (Bar) Model Oil Cooler By-pass R450LC-7 R360LC-7 R320LC-7 R200W-7 R290LC-7A R210LC-7 R180LC-7 R140LC-7 Page18 Construction Equipment...
Page 20: Main Components
R210LC-7 4. Main Components 4-1A.Main Control Valve (Kawasaki) Page19 Construction Equipment...
Page 21 R210LC-7 Side view Upper view Page20 Construction Equipment...
Page 22 R210LC-7 Bottom view Side view Page21 Construction Equipment...
Page 23 R210LC-7 Page22 Construction Equipment...
Page 24 R210LC-7,R290LC-7A 1)Foot Relief Valve Page23 Construction Equipment...
Page 25 R210LC-7,R290LC-7A 2)Direction Control Valve Page24 Construction Equipment...
Page 26 R210LC-7,R290LC-7A 3)Port Relief Valve Neutral Position Operation Position Load check Load check valve Port Relief valve Port Relief Port Relief Port Relief valve valve valve valve Center Bypass valve Page25 Construction Equipment...
Page 27 R210LC-7,R290LC-7A Page26 Construction Equipment...
Page 28 R210LC-7,R290LC-7A 4)Main Relief Valve & Load Check Valve Port Relief valve Port Relief valve Make Up valve Load check Main Relief Main Relief valve valve Main Pump Main Pump Page27 Construction Equipment...
Page 29 R210LC-7,R290LC-7A Page28 Construction Equipment...
Page 30 5)Arm-In Operation ( Regeneration) -Improve arm-in speed -Prevent arm cylinder cavitation Page29 Construction Equipment...
Page 31 Page30 Construction Equipment...
Page 32 Arm Roll Out Page31 Construction Equipment...
Page 33 6)Boom Priority System ( Boom & Swing Operation) Page32 Construction Equipment...
Page 34 7)Straight Travel Valve Page33 Construction Equipment...
Page 35 R290LC-7A 8)Boom & Arm Holding Valve Boom spool Boom Holding valve open Boom Holding valve closed Page34 Construction Equipment...
Page 36 R290LC-7A 9)Auto Idling Control System Neutral Position Operated Position Page35 Construction Equipment...
Page 37 R290LC-7 10)Straight Travel Valve at Neutral position Page36 Construction Equipment...
Page 38 R290LC-7 11)Travel and Swing Simultaneously Page37 Construction Equipment...
Page 39 R110/140/160/180LC-7 4-1B. Hanil-MCV Trav alarm PS FRONT VIEW BACK VIEW Arm Holding Straight Travel TRAVEL Valve (AHV) Valve (TS) RIGHT Work PS CD7 Signal to (NO, auto decel) open v/v TRAVEL Pc41 LEFT Main Relief SWING Valve PO (PILOT RETURN BOOM 1 Drain3 BOOM2...
Page 40 R110/140/160/180LC-7 TRAVEL LEFT Orifice BOOM 1 ARM2 OPTION EXTRA A (OPTION) (1 side) Power BUCKET & ARM boost REGENERATION Regeneration OPTION PLUG PORT DRAIN SWING PLUG PORT Page39 Construction Equipment...
Page 41 DOZER OPTION (EXTRA B) (EXTRA C) OPTION ARM1 BOOM2 BOOM2 & ARM1 SWING SWING SWING PRIORITY TRAVEL DOZER RIGHT STRAIGHT TRAVEL REGENERATION) Q2 (SUMM) V3 PLUG summation line for arm (arm 2) PO (PILOT OIL ENTRANCE) PLUGS p 2-25 p 2-23 PLUG Page40 Construction Equipment...
Page 42 R110/140/160/180LC-7 ARM1 ARM2 BOOM2 BOOM1 (OPT) BOOM HOLDING VAVLE BUCKET SWING TRAVEL LEFT OPTION STRAIGHT TRAV V/V TRAVEL RIGHT Pilot Press Page41 Construction Equipment...
Page 43 R140W-7 ⑥ ⑥ ⑪ ⑤ ⑤ ⑪ ⑩ ④ ⑩ ⑨ ③ ④ ③ ⑧ ② ⑨ ⑦ ① ② ⑧ ① ⑦ Page42 Construction Equipment...
Page 44 1) SPOOLS ① OPTION (Dozer for Wheel excavator) ② BOOM1 ③ ARM2 ④ ARM REGENERATION ⑤ BUCKET ⑥ TRAVEL ⑦ SWING ⑧ BOOM2 ⑨ ARM1 ⑩ OPTION ⑪ OPTION Page43 Construction Equipment...
Page 45 2) SPOOL Location-1 Dozer up Pb20 Boom down PORT Relief v/v Pb20 ARM-In confluence Pc42 ARM Regeneration ARM Regeneration cut PORT Relief v/v BUCKET Out Pc40 Pc42 Drain TRAVEL Reverse RH SWING SWING Priority Pc40 ARM-In OPTION B Negative Relief OPTION C Page44 Construction Equipment...
Page 46 3) SPOOL Location-2 Straight Main relief v/v Travel spool AUTO IDLE Pa20 TRAVEL Reverse SWING(LH) PORT Relief v/v Pa21 BOOM RAISE confluence(BOOM2) Pa21 Pd41 Pd40 ARM Out PORT OPTION B Pd40 Relief v/v OPTION C DOZER Down Pa20 BOOM Raise Pd41 ARM Out confluence(ARM2) Pc40 OPTION(Breaker) BUCKET In...
Page 47 4) ATTACHMENT Supply port-1 Pb21 SWING Make-up BUCKET In BUCKET Out BOOM Raise OPTION A(BREAKER) OPTION(DOZER Down) BOOM Down Drain Dr2 Drain Pb21 BOOM Holding release OPTION(DOZER Raise) Page46 Construction Equipment...
Page 48 5) ATTACHMENT SUPPLY port-2 Pc41 TRAVEL Reverse TRAVEL Forward SWING(LH) SWING(RH) ARM In ARM Out OPTION B OPTION B OPTION C OPTION C Drain PC41 ARM Holding release Page47 Construction Equipment...
Page 49 6) NEGATIVE Control port Plug 오리피스 2-8. P1,P2 Port Plug Page48 Construction Equipment...
Page 50 7) CHECK Valves -1 OPTION”C” OPTION”B” BUCKET Plug ARM 1 Regeneration OPTION”A” BOOM2 (SWING ARM 2 Priority) SWING BOOM 1 TRAVEL DOZER Page49 Construction Equipment...
Page 51 8) CHECK Valves -2 SWING Make-up BUCKET In BUCKET Out OPTION”C” BOOM Raise OPTION A(BREAKER) OPTION(DOZER Down) BOOM Down Drain Dr2 Drain Pb21 BOOM Holding release OPTION(DOZER Raise) OPTION”B” BUCKET Plug LB1,LB2 ARM 1 Regeneration OPTION”A” BOOM2 (SWING ARM 2 Priority) SWING BOOM 1...
Page 52 9) BUCKET Orifice ; When combined operation with BUCKET, it allow to supply much oil to ARM/BOOM. OPTION”C” OPTION”B” BUCKET ARM 1 Regeneration OPTION”A” BOOM2 (SWING ARM 2 Priority) SWING BOOM 1 TRAVEL DOZER Page51 Construction Equipment...
Page 53 10) NEGATIVE Relief Valve ● RCV Neutral : Bypass pressure up-Pump flow decrease ● RCV Operation : Bypass pressure down-Pump flow increase Drain 28 bar Bypass passage Page52 Construction Equipment...
Page 54 11) Holding valve 11-1) Composition Piston “A” Sest-poppet Poppet Check Piston “B” Spring”B” Spring (Drain) Pb21 Holding release port Page53 Construction Equipment...
Page 55 11-2) ARM Holding release ARM 1 SPOOL Holding release Pilot port Drain Port ARM Cyl. (Pc41) ARM In pilot When ARM In operation, PILOT pressure can Drain Port port(Pc40) act on Pc40(ARM 1 Spool),Pc41(Holding release port) and ARM will be lower down. Holding release Pilot Port (Pc41) Page54...
Page 56 11-3) ARM Holding The Return oil from ARM CYL.(A) is blocked by the Check valve(C) and so it can not flow to the ARM Spool section(B). Ⓑ Ⓐ Ⓒ Check ARM CYL. Spring Page55 Construction Equipment...
Page 57 12) ARM Regeneration 12-1) Concept While the ARM moves down from “A” to “B” position as the figure, Return oil quantity will exceed the supply oil amount cause of the ARM gravity. It can make a Cavitation. To make stop Cavitation, Return oil from (ARM Regeneration-Check v/v) cylinder flow to the supply line.
Page 58 12-2) ARM Regeneration circuit ＊ PILOT Supply port when ARM In operation ① Pc40 ARM 1 Spool ② Pc41 ARM Holding release ① ② ③ Pc42 Selection v/v ARM 1 ③ ④ Pb3 ARM 2 Spool Regen. ④ ARM 2 Pc42 Page57 Construction Equipment...
Page 59 12-3) ARM Regeneration - Action Pc42 Pc42 ARM 1 Regen. ARM 2 Page58 Construction Equipment...
Page 60 13) AUTO IDLE ; One for Attachment, the other one for travel operation check. Page59 Construction Equipment...
Page 61 4-1C. Pressure Settings UNIT: BAR 110LC-7 140LC-7 160LC-7 180LC-7 210LC-7 250LC-7 290LC-7 320LC-7 360LC-7 450LC-7 *500LC-7 MAIN CONTROL MAIN RELIEF VALVE POWER BOOST PORT RELIEF (arm, boom, bucket) *380 SWING MOTOR RELIEF PRESS (measured on swing motor) BRAKE RELEASE 33~50 30~50 33~50 33~50...
Page 62 Subject 1 : Only one attachment speed is slow 1.Problem : attachment speed is slow 2.Check & Measure : Only one attachment speed is slow 1) Condition : S Mode, max rpm 2) Test Items and Specifications Pressure Test result Measuring Point Remedy (If not) (Kg/㎠)
Page 63 3) Measuring point for pilot pressure ※ How to measure (1) disconnect Pilot Hose (2) connect the disconnect hose to Gauge “T” fitting (3) start the engine ※ Test Items and Specifications Pilot Pressure Test result Attachment Remarks (If Not) (Kg/㎠) In Neutral Full...
Page 64 4) Measuring point for main pressure ※ How to measure 1) disconnect pilot hose 2) connect the disconnect hose to gauge “T” fitting 3) start the engine Main relief ※ Test Items and specifications Pressure Relief Remarks Valve (Kg/㎠) Main 330/360Kg/㎠...
Page 65 Subject 2 : All attachment speeds are slow 1.Problem : All attachment speeds(boom,arm,bucket) are slow 2.Check & Measure : 1) Condition : H Mode, max rpm 2) Pressure check of attachment Kgf/㎠ Swing Bucket Bucket Boom + L/H Swing Travel Travel In/Out Travel...
Page 66 3.Cause 1)Abnormal result of pressure check : L/H travel, bucket out, arm in, boom up 2)Check the pressure for swing and L/H relief to find if the pump 2 oil flows to pump1. As a result, it was found that pump 2 oil flows to pump1 side of main control valve -bucket confluence check valve broken 4.Remedy Bucket confluence...
Page 67 4-2.Pump assembly 1)View of Pump assembly Pi1=Neg. Control Pm1=Flow Cut Off Connect to Regulator 1 Engine Regulator 2 Pi2=Neg. Control Pm2=Flow Cut Off EPPR Pressure EPPR Valve 35 bar P1 front P2 rear Pilot Pump Page66 Construction Equipment...
Page 68 2) The Type and circuit of regulator 2) The Type and circuit of regulator ① ② ① ⑤ ④ ⑦ ② ⑥ ③ ⑥ Section Y-Y ⑥ Section X-X ** ①~⑦ Regulator Parts Name ** ① ① : Lever 1 ③...
Page 69 3)View of regulator 3)View of regulator The Portion of Horse Power Control The Portion of Flow Control Page68 Construction Equipment...
Page 70 4) HHI Pump 4) HHI Pump regulator adjustment regulator adjustment Adjustment of max. Adjustment of min. Adjustment of outer spring flow control flow control Tightening Tightening Tightening Compensating Input amount of amount of amount of Flow Flow control starting torque Model/type adjusting adjusting...
Page 71 Adjustment of inner spring Adjustment of flow control characteristic Tightening Tightening Flow control amount of amount of Flow Input torque starting Flow change Model/type adjusting adjusting change change pressure amount screw screw amount amount change amount (627) (924) min-1 Turn L/min Nᆞm Turn...
Page 72 5) Structure of pump 5) Structure of pump Piston Servo Piston Shoe Swash Plate Gear Pump Ass`y Support Drive Shaft Cylinder Block Valve Plate Page71 Construction Equipment...
Page 73 6) View & main components of pump 6) View & main components of pump Support Drive Shaft Servo Piston Shoe Piston Swash Plate Cylinder Block Valve Plate Page72 Construction Equipment...
Page 74 Page73 Construction Equipment...
Page 75 7)Symbol of Pump Assembly R210LC-7,R290LC-7A Actuator,Cylinders,Motors Page74 Construction Equipment...
Page 76 R210LC-7 Drain Pf (EPPR) Drain Page75 Construction Equipment...
Page 77 R290LC-7 8)Pump Regulation Schematic Page76 Construction Equipment...
Page 78 9)Pump Regulating System A. Opening of a spool in the Main Control Valve results in flow increase of the pump, which supplies oil to the relevant spool. This flow increase is accomplished by pressure decrease in front of the foot relief valve. = NEGATIVE CONTROL SYSTEM signals: F1 &...
Page 79 Regulator consists of the negative flow control, total horse power control and power shift control(EPPR) Page78 Construction Equipment...
Page 80 10)Regulating Circuit FOOT RELIEF VALVE 1 FOOT RELIEF VALVE 1 F2=NEG CONTROL SIGNAL F1=NEG CONTROL SIGNAL (0..30 bar) (0..30 bar) MODE SELECTION SPEED SENSOR Remark H, S, M, U The Main Relief Valve (MR) limits the general working pressure to max. 330 bar &...
Page 81 11)Flow Pressure Chart R210LC-7 The flow pressure chart of the pump depends on the active program version of the cluster. R210LC-7(standard) R210LC-7(standard) R210LC-7, default ( = version 1.X) R210LC-7, other case ( = version 2.X) 118K 105K 161K 161K 206L Emergency mode 2100rpm 217L...
Page 82 12)Pump Regulator Qmax control, Qmin control, Qmax Cut control Qmin control Qmax control Qmax Cut control Page81 Construction Equipment...
Page 83 13)Control and Adjustment of Regulator 13)Control and Adjustment of Regulator - Flow Control Max. Flow Adjust.Screw(①) Pilot Flow Adjust. screw(③) Flow Cut Off Adjust. Screw(④) Min. Flow Adjust.Screw(②) * Pilot Flow Adjust. Screw(③) * Screw Tighten(Flow ↑) * Max Flow Screw Adjustment(①) * Screw Loosen(Flow ↓) Screw Loosen (Flow ↑) Screw Tighten (Flow ↓)
Page 84 14) Control & adjustment of regulator 14) Control & adjustment of regulator - Horsepower Control First Horse Power Adjust. Screw(⑤) Second Horse Power Adjust. First Horse Power Adjust. Second Horse Power Adjust. Screw(⑥) Screw(⑤) Screw(⑥) * First Horse Power Adjust.Screw(⑤) Screw Tighten (Flow ↑) Screw Loosen(Flow ↓) * Second Horse Power Adjust.
Page 85 Minimum flow Maximum flow REGULATOR REGULATOR Page84 Construction Equipment...
Page 86 15)Maximum flow -When a machine is operating, oil is supplied to the actuator(cylinder or motors) so that no oil pressure reaches piston A. -Then, the piston B goes back to the neutral position by the spring and the oil in the large chamber of the piston C is returned to the tank -Now the oil is supplied to LH side of the cylinder C.
Page 87 16)Over Load Preventing Function (Minimazing) -When a machine is under load or the cylinder arrives at the end of stroke, the pressure is increased Cylinder pressure > spring pressure (B + D) The pressure is applied at the piston D and compresses the spring D and B So, the valve B moves to LH side and the oil enters the piston C through the passage at piston B...
Page 88 17)Flow Control -When the engine is running, the swash plate moves to minimum angle Minimum position as per the following steps flow 1.the pressure is created by restriction of the foot relief valve 2.the pressure apply to the piston A 3.the piston A is moved to LH side 4.the valve B is opened 5.the pressure flows to the piston C...
Page 89 18)Flow Reset Function (Maximazing) -When the load at the cylinder is gone, the pressure the cylinder and in the position D is decreased Cylinder pressure < spring force (B+D) Then, the oil in the cylinder C returns to the tank as shown in figure, and the swash plate angle is increased to give maximum flow...
Page 90 19)Regulator: “Flow” Control System When operating the excavator equipment, the negative control pressure Fi inside regulator 1 or 2, drops, which results in displacement of the pilot piston and increasement of the pump flow. PILOT PISTON NEG CONTROL ADJUST SCREW PRESSURE PRESSURE PILOT SPRING...
Page 91 Flow Control Signals MAX FLOW CUT-OFF MAX FLOW CUT-OFF SIGNAL for P1 SIGNAL for P2 (35 bar ON / 0 bar OFF) (35 bar ON / 0 bar OFF) 35 bar NEG CONTROL SIGNAL FOR P1(0…40bar) REAR PUMP FRONT PUMP (P1) (P2) NEG CONTROL...
Page 92 20)Regulator: “Power” Control System By changing the mode (H,S,M,U) the CPU varies the current towards the EPPR valve (Electric Proportional Pressure Reducing Valve). This results in varying EPPR pressures, which work (together with P1 & P2 pressure) on the power piston inside each regulator.
Page 93 -When one of the power modes is selected during operation, the EPPR valve pressure is applied at the piston D The piston D compresses the spring and move the valve B to LH side Therefore, the pump oil enters to the piston C and reduces angle of swash plate So, oil delivery of the pump is reduced.
Page 94 Page93 Construction Equipment...
Page 95 R210LC-7 21)Flow Increasing Function Page94 Construction Equipment...
Page 96 R210LC-7 22)Flow Reducing Function Page95 Construction Equipment...
Page 97 R210LC-7 23)Overload Prevention Function Page96 Construction Equipment...
Page 98 R210LC-7 24)Flow Reset Function Page97 Construction Equipment...
Page 99 25)Regulator 1.Negative flow control 1.Negative flow control 2.Total horsepower control 2.Total horsepower control 3.Adjustment of input horsepower 3.Adjustment of input horsepower ①Adjustment of outer spring ②Adjustment of inner spring 4.Power shift control 4.Power shift control 5.Qmax cut control 5.Qmax cut control 6.Adjustment of maximum and minimum flows 6.Adjustment of maximum and minimum flows Page98...
Page 100 Subject 1 : Attachment operating speed for R290LC-7A is slow 1.Problem : All attachment speed is slow 2.Check & Measure 1)Test condition : S Mode, max rpm 2) Test Items and Specifications Test Measuring Point Condition Spec’ Remedy (If not) Result Unload 1750rpm...
Page 101 3) Specification for EPPR Valve Eng’ RPM Pump EPPR Mode Unload Load Current (mA) Pressure (Kg/㎠) 1950 1900 1850 1800 1750 1700 Auto Idle 1200 4) Measuring Method of EPPR Pressure By Cluster By Pressure Gauge Gauge Port Page100 Construction Equipment...
Page 102 5) Specification of Accel’ and ECM signal ※ Specification Table ※ How to find out Accel’ Dial (dL) Signal to ECM (Po) By cluster Step Signal M /rpm H /rpm S /rpm 0V/950 0V/950 0V/950 0.6/1120 0.6/1120 0.6/1120 0.8/1200 0.8/1200 0.8/1200 1.6/1450 1.6/1450...
Page 103 6) Measuring Point for Main Pressure ※ Specification Table Unit : Kg/㎠ Attachment Pressure Remarks Main Relief 330/360±10 Boom, Arm, 330/360±10 Bucket Travel 360±10 Swing 265±10 Page102 Construction Equipment...
Page 104 7) Fr & Fl pressure ※ How to measure (1) disconnect Fr or Fl hose (2) connect the disconnect hose to gauge “T” Fitting (3) start the engine ※ Specification Table RCV Lever Test result Spec’ Remarks In Neutral Below 38Kg/㎠ In Full Below 5Kg/㎠...
Page 105 Subject 2: Deviation for R290LC-7 travel 1.Problem : deviation for travel 2.Check & measure 1)Preparation - Hyd’ Temp’ : above 50℃ - H Mode, Max rpm 2)How to measure Rotate 1 turn and then measure time taken for next 3 revolution 3)Specifications Test result Spec’...
Page 106 3.Remedy 1)How to measure the Pressure - Pull Travel lever fully - Measure the travel pressure 2) Remedy according to the test result Travel Pressure Remedy Below 210Kg/㎠ A adjuster should be adjusted Above 210Kg/㎠ B adjuster should be adjusted “A”...
Page 107 avitation Subject 3 : Pump c 1.Problem :Cavitation occurs with pump 2.Check & Remedy: 1)Check if hydraulic volume proper =>Replenish specified oil to the standard level 2)Check if viscosity of hydraulic oil is too high =>Replace oil with one of proper viscosity 3)Check if suction strainer clogged =>Clean suction strainer 4) Air is intruding from pump suction line =>Retighten or replace parts 5)Check if reservoir breather is clogged =>Clean or replace reservoir breather...
Page 108: 4-3.Pilot Circuit
R290LC-7A 4-3.Pilot Circuit Page107 Construction Equipment...
Page 109 R290LC-7A Operated Position Page108 Construction Equipment...
Page 110: 4-4.Swing Motor
R140LC-7 4-4.Swing Motor 1)View of Swing Motor Page109 Construction Equipment...
Page 111 R210LC-7 All excavators have a similar swing device SWING MOTOR R210LC-7 (ser. nr below E1938) Reactionless valves Relief valves Time delay valve Remark: PG HOSE Greasing of the output shaft of swing reduction is required each 1000 hrs ! SH HOSE Page110 Construction Equipment...
Page 112 R210LC-7 2)Swing Circuit Operation Page111 Construction Equipment...
Page 113 R290LC-7A Page112 Construction Equipment...
Page 114 R290LC-7A Page113 Construction Equipment...
Page 115 R290LC-7A Neutral Position Swing is not operated Page114 Construction Equipment...
Page 116 R290LC-7A 3)Swing Port Relief Valve Page115 Construction Equipment...
Page 117 R290LC-7A 110bar Page116 Construction Equipment...
Page 118 4)Releasing of Swing Brake By operating the swing (SW), the joystick pressure (±5~20 bar) is applied on the MCV swing spool, and at the same time on the “SH” port of the swing motor: this allows pilot oil (35 bar) to enter in the brake section of the swing motor and lift up the swing piston, resulting in releasing of the brake.
Page 119 R290LC-7A 5)Swing Brake (Neutral Position) Page118 Construction Equipment...
Page 120 R290LC-7A 6)Swing Brake (Operating Position) Page119 Construction Equipment...
Page 121 R290LC-7A Page120 Construction Equipment...
Page 122 R290LC-7A Page121 Construction Equipment...
Page 123 R290LC-7A 7)Antirotation Valve Page122 Construction Equipment...
Page 124 Page123 Construction Equipment...
Page 125 When oil supplies to Motor Inlet, it flows into the chamber through bypass way(B). Then, oil returns to the Motor Outlet very shortly. Next, oil fills in the chamber of poppet through Bypass Way(A) and it results in the poppet being closed and the swing motor can be rotated When the spool of MCV is located at the neutral position, the back-pressure happens to Motor Outlet due to the force of inertia and it tries to rotate the motor reversely.
Page 126 R290LC-7A 8)Make Up Valve Page125 Construction Equipment...
Page 127 Relief Model Maker Press R140LC-7 Jeil/Sungbo DongMyung/ R180LC-7 Sungbo R210LC-7 Jeil/Sungbo DongMyung/ R290LC-7A Sungbo DongMyung/ R320LC-7 Sungbo R360LC-7A Jeil/Sungbo R500LC-7A Toshiba Page126 Construction Equipment...
Page 128 Subject 1: Both LH and RH swing actions are impossible (1) Check hydraulic oil level (2) Check gear pump pilot pressure within standard level (3) Check safety solenoid valve pressure within standard and main relief valve faulty (4) Check if swing control valve spool move lightly by hand (5) Check swing brake release valve faulty (6) Check swing motor rotation and pilot valve Subject 2 : Machine swings but does not stop...
Page 129: 4-5.Travel Motor
4-5.Travel Motor R140/160/180LC-7A (Tong Myung) serial nr below E0743 serial nr below E2079 Orifice second speed (back of Filter parking cover) brake (back of cover) COUNTER BALANCE SPOOL CHECK (323) VALVE CHECK VALVE (BALL) PISTON DRAIN OVERLOAD RELIEF VALVE P2 GAUGE SECOND SPEED SPOOL P1 GAUGE...
Page 130 R210LC-7A (Jeil) Remark This travel motor shifts automatically in 1e speed, at a pressure of 250 bar and up. SECOND SPEED SPOOL OVERLOAD RELIEF VALVE DRAIN (T SECOND SPEED SPOOL 2-SPEED- CONTROL PORT (Ps) SPEED) NPTF 1/16 PLUGS OVERLOAD RELIEF COUNTER VALVE BALANCE SPOOL...
Page 131 1) Relief Valve Piston ※ Role of the piston - Reducing shock while the piston moves when relief pressure is activated to the valve(Time delay effect). Page130 Construction Equipment...
Page 132 2) Counterbalance Valve Page131 Construction Equipment...
Page 133 Speed Control(Jeil) Speed Control Page132 Construction Equipment...
Page 134 Speed Control(Jeil) 2nd Speed Control Page133 Construction Equipment...
Page 135 Speed Control Page134 Construction Equipment...
Page 136 Speed Control P=290K P=290K Fa1+Fs> Fa2 IF Pi = 40kgf/㎠ Main pressure = 290kgf/㎠ Pi=40K Page135 Construction Equipment...
Page 137 R290LC-7A P/N:31N8-40060(Jeil) Screw Orifice (#1) Screw Orifice (#2) -Relief valve press. 330 bar -Automatic shift press. 270 bar -Brake release press. 9 bar Counter Balance valve (#1) Sec. Relief valve (#2) Speed Adjust R320LC-7 (#0456~) (Jeil)Part nr (Assy) 31N9-40020 Screw Check Valve Valve Page136...
Page 138 Regulating valve 카운터 밸런스 스플 ① ① CHECK V/V ② ② ③ ③ ④ ⑤ ①main pressure check point ④Tilting rod ②drain ⑤2 speed spool ③relief valve Page137 Construction Equipment...
Page 139 Page138 Construction Equipment...
Page 140 1.5￠ 1.0￠ Page139 Construction Equipment...
Page 141 C/balance spool & check V/V Page140 Construction Equipment...
Page 142 Brake release (brake release pressure 9Kg/㎠ Page141 Construction Equipment...
Page 143 2 Speed Spool 2 Speed ●Pi pressure = 0 bar => 1 speed ●Pi pressure > 20 bar => 2 speed Page142 Construction Equipment...
Page 144 Main pressure > 270 bar => 1 speed changed 2 Speed Spool Page143 Construction Equipment...
Page 145 R290LC-7A Travel Motor ( Negative Brake) Page144 Construction Equipment...
Page 146 R290LC-7A Brake Valve Page145 Construction Equipment...
Page 147 R290LC-7A Brake Valve (Accelerating Position) Page146 Construction Equipment...
Page 148 Relief Pressure Model Maker (bar) R55-7 Jeil R140LC-7 DongMyung R180LC-7 DongMyung R210LC-7A Jeil/Sungbo R290LC-7A Jeil/Sungbo R320LC-7A Jeil/Sungbo R360LC-7A DongMyung R500LC-7A Hydromatic Page147 Construction Equipment...
Page 149 Subject 1 :Travel does not function at all on one side (1) Check if the travel control valve spool changed over positively (2) Check if the symptom change when L/H,R/H travel relief valves are exchanged (3) Check if the symptom change when front and rear pump discharge hoses are exchanged =>...
Page 150: 4-6.Remote Control Valve
R290LC-7A 4-6.Remote Control Valve Big spring : S2 Small spring : S1 D1> D2, ( F1> F2) S1 = F1- F2 For keeping the balance between the spring force and the force( F1- F2) : S1 = F1- F2 Page149 Construction Equipment...
Page 151: 4-7.Remote Control Pedal
R290LC-7A 4-7.Remote Control Pedal Page150 Construction Equipment...
Page 152: 4-8.Turning Joint
R290LC-7A 4-8.Turning Joint Page151 Construction Equipment...
Page 153: Breaker /Double Function Piping
5.Breaker / Double Function Piping The option spool in the MCV can be used for either breaker (single function), either clamshell, shear (double function) A. POSITIONING OF THE 3 WAY VALVE D. PRESSURE SETTING Use the secondary relief valves In case of breaker operation near the “...
Page 154: 5-1.Breaker /Clamshell Piping
5-1.Breaker / Clamshell Piping OIL FLOW / RPM (select “BREAKER MODE” on the cluster) ENGINE OIL FLOW (l/min) R140LC-7 R160LC-7 R210LC-7 R290LC-7 R360LC-7 R450LC-7 R500LC-7 R180LC-7 1500 Plug at cabin bottom, is “bridged” in case of 2 way 1600 functioning system (other case: elec.
Page 155 R110LC-7 BREAKER / DOUBLE ACTING CIRCUIT (low flow) Pn2 (Neg Signal.) Pn1 (Neg Signal.) MAIN CONTROL VALVE Plug at cabin bottom, is “bridged” in case of 2 way functioning system (other case: elec. foot pedal PRESS. mounting) CHECK PORT FLOW (see p.
Page 156: 5-2.Single Acting Circuit
5-2.Single Acting Circuit Page155 Construction Equipment...
Page 157: 5-3.Double Acting
5-3.Double Acting Circuit Page156 Construction Equipment...
Page 158: 5-4.Comparison Table
5-4.Comparison Table Page157 Construction Equipment...
Page 159 5-5. Oil Flow / rpm, with “Breaker Mode” Switch On Max. Flow Breaker mode Model Remarks Flow (liter) Flow (liter) R140LC-7 130×2 2100 2100 R140W-7 130×2 2100 2100 R1400W-7 176×2 2200 2200 R160LC-7 168×2 2100 2100 R170W-7 168×2 2100 2100 R180LC-7 168×2 2100...
Page 160: Ⅲ.electric & New Capo System
Ⅲ.Electric & New CAPO System (Computer Aided Power Optimization) Page159 Construction Equipment...
Page 161: Capo System
Mechanically controlled CMS E/G 1. CAPO System 1-1. Power Mode Selection System ♧ Page160 Construction Equipment...
Page 162 Electronically controlled CMS E/G (Tier-2,3) 1-1. Power Mode Selection System ※ No Accel actuator(DC Motor) Page161 Construction Equipment...
Page 163 TS guide SUBJECT 1: Malfunction of RPM Meter on cluster(Mechanically controlled E/G) Model Serial No. Operating Hour Date ROBEX210LC-7 Dec. 2004 1. Symptoms (including the operator mention) 1) RPM Meter displays 0 RPM when start the Engine. 2) Intermittently shows 630∼680RPM on RPM Meter while E/G running. 3) Real E/G RPM is in normal.
Page 164 2) Communication between CPU Controller and CLUSTER is good. 3) No ERROR CODE on CLUSTER. 4) CONNECTOR(CN-2,CN-9,CD-17,CN-51) on HARNESS check : Finding rater in CN-2 connector. 3. Cause Short circuit between CN-2(11)-(12) by water (Speed sensor signal is not normal). 4.
Page 165: Switches On Joy Stick Lever
1-2. Switches on Joy Stick Lever ONE TOUCH DECEL -high rpm / low rpm -this button functions only when auto HORN decel function on cluster is canceled (No auto decel on R110LC-7) OPTION POWER BOOST (this button is placed (360 bar for 8 sec) in serial line with switch on dash board and puts voltage on...
Page 166 1-3. Monitor Panel (Cluster) 1) Monitor panel feature CLUSTER Connector Page165 Construction Equipment...
Page 167 2) Cluster Check Procedure (1) Start key: ON (2) Start of engine If not, change cluster Page166 Construction Equipment...
Page 168 3) How To Change The Program Version (1.X <-> 2.X) on The Cluster CHANGING PROGRAM VERSION VIA BUZZER STOP & TRAVEL SPEED SWITCH ♧ EPPR V/V CURRENT CHANGE. Page167 Construction Equipment...
Page 169 Ref.] RPM & EPPR SETTING for H & S Mode ※ Refer to the SERVICE manual for the other model. R210LC-7 #1001 ~ Option R290LC-7 ~ #111 Page168 Construction Equipment...
Page 170 4) Memory Set (U mode) Through U mode, an operator can change the engine rpm and pump power and memorize it for his preference. Ex) R360LC-7A (Latest production excavator) Page169 Construction Equipment...
Page 171 Electronically controlled CMS E/G (Tier-2,3) 1-4. Communication CLUSTER CPU CONTROLLER RS485 SERIAL CAN(J1939) COMMUNICATION COMMUNICATION RS232C SERIAL COMMUNICATION Page170 Construction Equipment...
Page 172 1-5. Automatic Deceleration System 1) Diagram ① Operation Delay time: 4 sec - Work/Travel neutral - Accel dial position: Higher than 4 ② E/G speed down shift : 1200 rpm (Refer to the POWER Mode setting classified by MODEL ) ♧위치...
Page 173 R210LC-7 2) Circuit Page172 Construction Equipment...
Page 174 TS guide SUBJECT 1 : Malfunction of Auto deceleration Model Serial No. Operating Hour Date ROBEX320LC-7 Dec.2005 1. Symptoms (including the operator mention) 1) Engine speed goes up 2000RPM(S-MODE) immediately when start the engine. 2) Malfunction of Auto deceleration. 3) No error code. 2.
Page 175 4. Remedy ; Connection of CD-7(Work pressure SW) on MCV. 5. Remarks , NC(Normal Close) type (Work) (Travel) Page174 Construction Equipment...
Page 176 7-Series 1-6. Power Boost System Power MODE condition: H,S or M Power Boost Pressure: 330 → 360bar -Location: Main pump room -Spec: 24V, 15~25Ω Page175 Construction Equipment...
Page 177 1-7. Travel Speed Control System ♧ - Location: Main pump room Low speed : Travel speed sol. – OFF, Torque-High - Spec: 24V, 15~25Ω High speed : Travel speed sol. – ON, Torque-Low Page176 Construction Equipment...
Page 178 1-8. Automatic Warming Up & Engine Overheat prevention 1) Automatic Warming Up - Coolant Temperature: Below 30℃ - Accel Dial: Lower than 3 position - E/G speed: 1000rpm 2) Overheat prevention - Coolant Temperature: Higher than 110℃ - Accel Dial: Higher than 8th position - E/G speed: Accel dial 7 setting rpm.
Page 179 1-9. Anti - Restart Function ① To protect the start motor from inadvertent restarting, CPU controller isolates the start motor control line after the engine is in operation condition. - Start relay disabled after 10sec of E/G start. ② By-pass connector (CN 92) can make the engine start when CPU controller is removed.
Page 180 TS guide SUBJECT : Malfunction of Anti-restart Model Serial No. Operating Hour Date ROBEX140LC-7 Oct.2004 1. Symptoms (including the operator mention) 1) Engine start is normal. 2) Malfunction of Anti-restart 3) No Error code. 2. Check & Measure 1) Engine speed display and Battery charge lamp are normal. 2) Check resistance between CN-50(11) and shsh : 0.3Ω(always).
Page 181 4. Remedy 1) Separation of CN-92a and CN-92b. 2) Confirmation of normal Anti-restart function. 5. Remarks CN-50(11) Page180 Construction Equipment...
Page 182 1-10. Location of Solenoid Valves 1) Safety SOL. 2) Power Booster SOL. (330<->360bar) 3) Max. Flow Cut.Off SOL. : (85% <-> 100%) 4) Travel; Speed 5) Boom Priority SOL. : (90/180도) ♧ 유압 회로 Page181 Construction Equipment...
Page 183 1-11. Work/Power Mode Selection ※ Refer to the next page for details. Page182 Construction Equipment...
Page 184 2) Work Mode Selection detail ; One of 3 work modes can be selected properly for the work condition of the machine. Swing Max flow cut- Work Mode Function priority off solenoid solenoid Operation speed for Heavy Mode Boom & arm is faster than G mode Default mode.
Page 185 3) Boom Priority System (Heavy Mode/General Mode) - When selecting HEAVY work mode, the priority solenoid CN133 is either DE-energised, either ENergised. (depends on machine type: see below) Anyhow, boom (&arm) speed will be higher and the swing speed will be lower, when operating the work equipment simultaneously. In general mode, there’s no arm regeneration (sending oil from rod cyl.
Page 186 1-12. Monitoring Display on Cluster Page185 Construction Equipment...
Page 187 1) Description of Monitoring Display Page186 Construction Equipment...
Page 188 Page187 Construction Equipment...
Page 189 Page188 Construction Equipment...
Page 190 Page189 Construction Equipment...
Page 191 2) Error Codes Table After ignition on, push 2 times the buzzer stop & select switch simultaneously, to get into the error code group. (OPTION) (OPTION) (OPTION) (OPTION) (OPTION) (OPTION) (OPTION) (Not all error codes are applicable for the R110-7) (OPTION) (OPTION) (OPTION)
Page 192 3) Engine Error Codes List for R290/360LC-7 (Cummins QSB/QSC) Page191 Construction Equipment...
Page 193 Page192 Construction Equipment...
Page 194 Page193 Construction Equipment...
Page 195 3) Engine Error Codes List for R450LC-7 (Cummins QSM) Page194 Construction Equipment...
Page 196 Page195 Construction Equipment...
Page 197 Page196 Construction Equipment...
Page 198 4) Explanation of Error Code System(Self Diagnostic System) Memorised errors: only visible at “IGNITION ON” (not at running engine!) Page197 Construction Equipment...
Page 199 1-13. Malfunction of Cluster or Mode Selection System • Check display of cluster first 5 sec after ignition on: CLUSTER All lamps should light up, with buzzer sound brown POW (IG) black yellow • If nothing appears, check on cluster: - Feed line (Brow ) 24 V blue - Ground line (Black)
Page 200 1) CPU Check(Troubleshooting) CPU FAILURE COMMUNICATION FAILURE WIRING DIAGRAM Page199 Construction Equipment...
Page 201 R210LC-7 2) Self Diagnosis for CPU controller LED Lamp Trouble Service G is Turned on Normal LED lamp R are Trouble on CPU or Change the controller Turned on G and Y are Trouble on serial Check serial lines communication line between controller Turned on and cluster.
Page 202 3) Emergency Procedure, in case of faulty CPU 3-1) ASSURING PUMP POWER CONTROL VIA EMERGENCY RESISTOR: Emergency Resistor CN19 CN47 & CN19 CN19B CN19A Connect CN19<>CN19B Disconnect CN19<>CN19A Connect Resistor with CN47 It might be that this connection was already established during normal operation: it has CN19 CN19A...
Page 203 3-2) ASSURING ENGINE SPEED CONTROL( Electronically controlled CMS E/G) 3-3) ASSURING STARTING OF MACHINE For B3.9, B5.9, C8.3, M11 engine: - DISCONNECT accelerator cable from injection pump lever CN92 - CONNECT emergency (Push-pull) cable on injection pump lever So, in this case MANUAL control of RPM is possible (SEE NEXT PAGE) CN92 For QSB, QSC, QSM engine:...
Page 204 Mechanically controlled CMS E/G 4) Emergency Engine rpm Control 3. Disconnect the connector(CN19-CN19A) 4. Connect the other connector(CN19-CN19B) 1. Disconnect the cable ( main cable) 2. Connect the emergency cable 5. Connect the connector, CN-47 Page203 Construction Equipment...
Page 205 Mechanically controlled CMS E/G 5) ENGINE ACCEL ACTUATOR (not for excavators with QS-engines) 1) ENGINE THROTTLE LEVER INJECTION PUMP EMERGENCY CABLE 2) EMERGENCY CABLE (Push-pull cable) Page204 Construction Equipment...
Page 206 6) Preparation for Emergency Operation Page205 Construction Equipment...
Page 207 Mechanically controlled CMS E/G 1-14. Accel. Actulator Reduction gear Type A (General Type) & potentiometer Page206 Construction Equipment...
Page 208 Mechanically controlled CMS E/G 1-15. Engine Speed Sensor (not for excavators with QS-engines) A. CUMMINS ENG (B, C series) B. MITSUBISHI ENG A. CUMMINS ENG (B, C series) B. MITSUBISHI ENG Page207 Construction Equipment...
Page 209 Mechanically controlled CMS E/G 1-16. Engine rpm control System Page208 Construction Equipment...
Page 210 Mechanically controlled CMS E/G 1-17. Hydraulic Oil Flow Control system Page209 Construction Equipment...
Page 211 Mechanically controlled CMS E/G 1-18. Input & Output Signal 1) Graphs for 4 signals Accel' P/Meter EPPR Page210 Construction Equipment...
Page 212 Mechanically controlled CMS E/G 2) Value table Input (Volt) Output signal (Volt) EPPR valve Pressure Step Potentiometer Engine rpm Accel’ Dial S mode H mode S mode H mode H/S mode 1020 1020 1110 1110 1200 1200 1310 1360 1420 1470 1520 1560...
Page 213 7-Series 1-19. Troubleshooting Guide ① CPU Controller connectors : CN-50(1)~(18) Normal value Conn Input Pin No. Remark ector /Output BOOM PRIORITY SOL. MAX.FLOW SOL. POWER MAX. SOL. HOUR-METER Actual:16V ENGINE PREHEATER CO. CANCEL SOL. BATTERY 24V(+) CN-50 PUMP EPPR(-) 100~700 18Ω...
Page 214 - CPU Controller connectors : CN-50(19)~(36) Normal value Conn Input Pin No. Remark ector /Output (19) PARKING SW Wheel type only (20) OVERLOAD SIG 'Active' condition (21) ENG OIL FILTER SW Tier-1 only (22) (23) ACCEL ACT(-) 0/24 Tier-1, Deactive/Active condition (24) POWER IG Key 'ON'...
Page 215 ② CPU Controller connectors : CN-51(1)~(18) Normal value Conn Input Remark ector /Output WORKING OIL PS POWER MAX. SW TRAVEL ALARM SW E/G OIL PS Tier-1 only BOOM UP PS 24V(PRESS SENSOR) GND(PRESS SENSOR) CN-51 ALTERNATOR LEVEL 26~29 E/G run condition (10) P1 PRESS SIG 500 kg/cm...
Page 216 - CPU Controller connectors : CN-51(19)~(36) Normal value Conn Input Pin No. Remark ector /Output (19) TRAVEL Hi/Lo SW (20) GND(POT&DIAL) Tier-1 only (21) 5V(POT&DIAL) Tier-1 only (22) POT-SIG 0.3~4.2 Tier-1, 'Active' condition (23) ACCEL DIAL SIG 1~3.4 'Active' condition (24) FUEL LEVEL SENSOR 'Active' condition...
Page 217 CN148: J1939 (3-PIN) Diagnosis for Cummins ECM on QSB,QSC,QSM eng (R210LC-7) Box with: - fuses - CPU - relays - emergency resistor 13 (R290LC-7, R140LC-7) (and/or emergency switch) - connectors for Hyundai & Cummins diagnosis & software updating Page216 Construction Equipment...
Page 218 2-1. Components Location (Cabin) POWER RY SAFETY RY (Fuse box) Page217 Construction Equipment...
Page 219 2-2. Fuses & Relays LOCATION: OUTSIDE OF CPU COMPARTMENT R210LC-7 Some machines (R210LC-7,…) have “circuit breakers” which have to be “reset” in case of short circuit Safety Relay has an anti-restart function Page218 Construction Equipment...
Page 220 2-3. CONTINUAL POWER Circuit brakers (or Fusible link) FUSE BOX START KEY ROOM LAMP AC&HEATER WIPER + CPU B+ AC BLOWER MASTER SW BATTERY RY CHECK Point ① ~ ④ : 24V Page219 Construction Equipment...
Page 221 2-4. IG Circuit 1. Key SW ’ON’ 1) Battery RY ‘ON’ 2) Start RY – Power supplied 3) Power RY ‘ON’ 4) IG Power supplied 2. CHECK Point ① ~ ⑦ : 24V BATT. RY Operation! Operation! POWER RY ’ON’ KEY SW Page220 Construction Equipment...
Page 222 2-5. START Circuit CHECK Point ’ST’ ① ~ ⑦ : 24V KEY SW E/G START ! SAFETY RY START MOTOR FUEL SUPPLY ! FUEL CUT-OFF Sol. Page221 Construction Equipment...
Page 223 2-6. CHARGING Circuit BATT. RY BATTERY CHARGING !!! ☞ E/G Running condition ! ’ON’ KEY SW CHECK Point ① ~ ⑦ : 25 ~29V ALTERNATOR Page222 Construction Equipment...
Page 224 2-7. LIGHTS Circuit ☞ Condition : KEY SW ‘ON’ AC&HEATER - Back light ‘ON’ HEAD LAMP ‘ON’ CASETTRADIO CHECK Point - Back light ‘ON’ ① ~ ③ : 24V SWITCH PANEL - Back Light ‘ON’ CIGAR LIGHT - Back light ‘ON’...
Page 225 2-8. MONITORING Circuit FUSE Box POWER ‘ON’ SERIAL Communication between CHECK Point Controller-CLUSTER ① ~ ② : 0 ~ 11V Pulse CLUSTER to. PC ② ① CPU CONTROLLER Page224 Construction Equipment...
Page 226 2-9. WIPER & WASHER Circuit FUSE Box POWER ‘ON’ WIPER&WASHER Operation INTERMITENT Operation ② NORMAL Operation WASHER Operation ① ( WIPER CUT SW ) WASHER ‘ON’ CHECK Point ① - GND : 0 ~ 5V ② - GND : 0 ~ 5V ③...
Page 227 Page226 Construction Equipment...

Hyundai R140-7 Service Manual

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