Service manual Komatsu WA600-3, WA600-3D 50001 & Up | SEBM013216

Komatsu WA600-3, WA600-3D 50001 & Up SEBM013216 (Preview)

MAIN MENU
COVER
CONTENTS
SAFETY
– SAFETY NOTICE
FOREWORD
– GENERAL
– HOW TO READ THE SHOP MANUAL
– HOISTING INSTRUCTIONS
– METHOD OF DISASSEMBLING, CONNECTING PUSH-PULL TYPE COUPLER
– COATING MATERIALS
– STANDARD TIGHTENING TORQUE
– ELECTRIC WIRE CODE
– CONVERSION TABLE
– UNITS
01 GENERAL
– GENERAL ASSEMBLY DRAWING
– SPECIFICATIONS
– WEIGHT TABLE
– LIST OF LUBRICANT AND WATER
10 STRUCTURE AND FUNCTION
– POWER TRAIN
– POWER TRAIN SYSTEM
– RADIATOR, HYDRAULIC OIL COOLER
– RADIATOR, HYDRAULIC OIL COOLER (WITH SUCTION FAN)
– TORQUE CONVERTER AND TRANMISSION PIPING
– HYDRAULIC CIRCUIT FOR POWER TRAIN
– HYDRAULIC CIRCUIT DIAGRAM FOR POWER TRAIN
– TORQUE CONVERTER
– TORQUE CONVERTER REGULATOR VALVE (SERIAL NO.: 52001 AND UP)
– TRANSMISSION
– TRANSMISSION CONTROL VALVE
– TORQUE CONVERTER OIL COOLER
– TORQUE CONVERTER OIL FILTER
– TRANSFER
– DRIVE SHAFT
– CENTER SUPPORT
– AXLE
– DIFFERENTIAL
– LIMITED SLIP DIFFERENTIAL
– FINAL DRIVE
– AXLE MOUNT
– CENTER HINGE PIN
– STEERING PIPING
– STEERING COLUMN
– STEERING UNIT (ORBIT-ROLL VALVE)
– STEERING VALVE
– TWO-WAY RESTRICTION VALVE
– STOP VALVE
– EMERGENCY STEERING PIPING
– DIVERTER VALVE (FOR EMERGENCY STEERING)
– BRAKE PIPING
– BRAKE CIRCUIT DIAGRAM
– BRAKE VALVE
– CHARGE VALVE
– ACCUMULATOR (FOR BRAKE)
– SLACK ADJUSTER
– BRAKE
– PARKING BRAKE
– SPRING CYLINDER
– PARKING BRAKE SOLENOID VALVE
– HYDRAULIC PIPING
– WORK EQUIPMENT HYDRAULIC CIRCUIT DIAGRAM
– WORK EQUIPMENT LEVER LINKAGE
– HYDRAULIC TANK
– ACCUMULATOR (FOR PPC VALVE)
– PPC VALVE
– PPC RELIEF VALVE
– CUT-OFF VALVE
– MAIN CONTROL VALVE
– AUTO GREASE SYSTEM
– LUBRICATION OF WORK EQUIPMENT
– WORK EQUIPMENT LINKAGE
– BUCKET
– BUCKET POSITIONER AND BOOM KICK-OUT
– OPERATION OF PROXIMITY SWITCH
– ROPS CANOPY
– CAB
– CAB HEATER
– AIR CONDITIONER
– ELECTRIC CIRCUIT DIAGRAM
– MACHINE MONITOR SYSTEM
– MAIN MONITOR
– MAINTENANCE MONITOR
– MACHINE WITH JOYSTICK AND AUTOMATIC SHIFT CONTROL
– ENGINE STARTING CIRCUIT
– ENGINE STOP CIRCUIT
– AUTO PRIMING SYSTEMS (APS) (SERIAL NO.: 50001-52000)
– PRE-HEATING CIRCUIT (SERIAL NO.: 52001 AND UP)
– ELECTRIC TRANSMISSION CONTROL
– KICK-DOWN, HOLD SWITCH
– KICK-DOWN ELECTRICAL CIRCUIT
– ELECTRIC PARKING BRAKE CONTROL
– E.C.S.S. (ELECTRONICALLY CONTROLLED SUSPENSION SYSTEM)
20 TESTING AND ADJUSTING
– STANDARD VALUE TABLE
— STANDARD VALUE TABLE FOR ENGINE RELATED PARTS
— STANDARD VALUE TABLE FOR CHASSIS RELATED PARTS
— STANDARD VALUE TABLE FOR ELECTRICAL PARTS
– TESTING AND ADJUSTING
— TABLE OF TOOLS FOR TESTING, ADJUSTING, AND TROUBLESHOOTING
— MEASURING ENGINE SPEED
— MEASURING EXHAUST GAS COLOR
— ADJUSTING VALVE CLEARANCE
— TESTING AND ADJUSTING INJECTOR LIFT (SERIAL NO.: 52001 AND UP)
— MEASURING COMPRESSION PRESSURE
— MEASURING BLOW-BY PRESSURE
— MEASURING ENGINE OIL PRESSURE
— TESTING AND ADJUSTING FUEL INJECTION TIMING (SERIAL NO.: 50001-52000)
— REPLACING FAN BELT ADJUSTING AUTO-TENSIONER
— TESTING AND ADJUSTING ALTERNATOR BELT TENSION
— TESTING AND ADJUSTING BELT TENSION FOR AIR CONDITIONER COMPRESSOR
— HANDLING EQUIPMENT IN FUEL CIRCUIT (SERIAL NO.: 52001 AND UP)
— MEASURING FUEL PUMP OUTLET PORT PRESSURE (SERIAL NO.: 52001 AND UP)
— BLEEDING AIR FROM FUEL CIRCUIT (SERIAL NO.: 52001 AND UP)
— MEASURING EXHAUST TEMPERATURE
— MEASURING AIR SUPPLY PRESSURE (BOOST PRESSURE)
— ADJUSTING SPEED SENSOR
— ADJUSTING FUEL CONTROL CABLE (SERIAL NO.: 50001-52000)
— METHOD FOR ADJUSTING ENGINE STOP MOTOR CABLE (SERIAL NO.: 50001-52000)
— TESTING AND ADJUSTING TORQUE CONVERTER, TRANSMISSION OIL PRESSURE
— PROCEDURE FOR FLUSHING TORQUE CONVERTER, TRANSMISSION HYDRAULIC CIRCUIT
— PROCEDURE FOR MOVING MACHINE WHEN TRANSMISSION VALVE FAILS
— TESTING AND ADJUSTING STEERING OIL PRESSURE
— TESTING AND ADJUSTING STEERING STOP VALVE
— TESTING BRAKE OIL PRESSURE
— MEASURING WEAR OF BRAKE DISC
— MEASURING BRAKE PERFORMANCE
— TESTING AND ADJUSTING PARKING BRAKE
— TESTING AND ADJUSTING ACCUMULATOR CHARGE CUT-IN AND CUT-OUT PRESSURE
— TESTING AND ADJUSTING PPC OIL PRESSURE
— MEASURING WORK EQUIPMENT HYDRAULIC PRESSURE
— ADJUSTING WORK EQUIPMENT LEVER LINKAGE
— TESTING AND ADJUSTING OF BUCKET POSITIONER
— TESTING AND ADJUSTING OF BOOM KICK-OUT
— TESTING PROXIMITY SWITCH ACTUATION PILOT LAMP
— ADJUSTING MAIN MONITOR (SPEEDOMETER MODULE)
— BLEEDING AIR
— RELEASING REMAINING PRESSURE IN HYDRAULIC CIRCUIT
— PM CLINIC INSPECTION TABLE
– TROUBLESHOOTING
— POINTS TO REMEMBER WHEN TROUBLESHOOTING
— SEQUENCE OF EVENTS IN TROUBLESHOOTING
— POINTS TO REMEMBER WHEN CARRYING OUT MAINTENANCE
— CHECKS BEFORE TROUBLESHOOTING
— CONNECTOR TYPES AND MOUNTING LOCATIONS
— CONNECTOR ARRANGEMENT DIAGRAM
— CONNECTION TABLE FOR CONNECTOR PIN NUMBERS
— METHOD OF USING TROUBLESHOOTING CHARTS
— METHOD OF USING MATRIX TROUBLESHOOTING TABLES
— TROUBLESHOOTING OF ENGINE SYSTEM (S MODE)
— METHODS OF USING TROUBLESHOOTING CHARTS
— S-1 STARTING PERFORMANCE IS POOR (STARTING ALWAY TAKES TIME)
— S-2 ENGINE DOES NOT START
—- (1) ENGINE DOES NOT TURN
—- (2) ENGINE TURNS BUT NO EXHAUST SMOKE COMES OUT (FUEL IS NOT BEING INJECTED)
—- (3) EXHAUST GAS COMES OUT BUT ENGINE DOES NOT START (FUEL IS BEING INJECTED)
— S-3 ENGINE DOES NOT PICK-UP SMOOTHLY (FOLLOW UP IS POOR)
— S-4 ENGINE STOPS DURING OPERATIONS
— S-5 ENGINE DOES NOT ROTATE SMOOTHLY (HUNTING)
— S-6 ENGINE LACKS OUTPUT
— S-7 EXHAUST SMOKE IS BLACK (INCOMPLETE COMBUSTION)
— S-8 OIL CONSUMPTION IS EXCESSIVE (OR EXHAUST SMOKE IS BLUE)
— S-9 OIL BECOMES CONTAMINATED QUICKLY
— S-10 FUEL CONSUMPTION IS EXCESSIVE
— S-11 OIL IS IN COOLING WATER, OR WATER SPURTS BACK, OR WATER LEVEL GOES DOWN
— S-12 OIL PRESSURE LAMP LIGHT UP (DROP IN OIL PRESSURE)
— S-13 OIL LEVEL RISES
— S-14 WATER TEMPERATURE BECOMES TOO HIGH (OVERHEATING)
— S-15 ABNORMAL NOISE IS MADE
— S-16 VIBRATION IS EXCESSIVE
— TROUBLESHOOTING OF ENGINE CONTROLLER SYSTEM (EA) MODE
— METHOD OF ERROR CODE DISPLAY
— ACTION TAKEN BY CONTROLLER AND CONDITION OF MACHINE WHEN ERROR CODE IS DISPLAYED
— SCHEMATIC DIAGRAM FOR ENGINE CONTROL SYSTEM
— EA-1 ERROR CODE [111] (ABNORMALITY IN CONTROLLER MEMORY)
— EA-2 ERROR CODE [112] (ABNORMALITY IN TIMING RAIL ACTUATOR)
— EA-3 ERROR CODE [113] (ABNORMALITY WITH ELECTRIC CURRENT IN TIMING RAIL ACTUATOR SYSTEM)
— EA-4 ERROR CODE [115] (ABNORMALITY IN ENGINE SPEED SENSOR 2 SYSTEM)
— EA-5 ERROR CODE [116] (ABNORMALITY IN TIMING RAIL PRESSURE SENSOR SYSTEM HIGH LEVEL)
— EA-6 ERROR CODE [117] (ABNORMALITY IN TIMING RAIL PRESSURE SENSOR SYSTEM LOW LEVEL)
— EA-7 ERROR CODE [118] (ABNORMALITY IN FUEL PUMP PRESSURE SENSOR SYSTEM HIGH LEVEL)
— EA-8 ERROR CODE [119] (ABNORMALITY IN FUEL PUMP PRESSURE SENSOR SYSTEM LOW LEVEL)
— EA-9 ERROR CODE [121] (ABNORMALITY IN ENGINE SPEED SENSOR 1 SYSTEM)
— EA-10 ERROR CODE [122] (ABNORMALITY IN BOOST PRESSURE SENSOR SYSTEM HIGH LEVEL)
— EA-11 ERROR CODE [123] (ABNORMALITY IN BOOST PRESSURE SENSOR SYSTEM LOW LEVEL)
— EA-12 ERROR CODE [131] (ABNORMALITY IN ACCELERATOR SENSOR SYSTEM HIGH LEVEL)
— EA-13 ERROR CODE [132] (ABNORMALITY IN ACCELERATOR SYSTEM LOW LEVEL)
— EA-14 ERROR CODE [135] (ABNORMALITY IN OIL PRESSURE SENSOR SYSTEM HIGH LEVEL)
— EA-15 ERROR CODE [141] (ABNORMALITY IN OIL PRESSURE SENSOR SYSTEM LOW LEVEL)
— EA-16 ERROR CODE [143] (ABNORMAL DROP IN OIL PRESSURE (LEVEL1))
— EA-17 ERROR CODE [144] (ABNORMALITY IN WATER TEMPERATURE SENSOR SYSTEM HIGH LEVEL)
— EA-18 ERROR CODE [145] (ABNORMALITY IN WATER TEMPERATURE SENSOR SYSTEM LOW LEVEL)
— EA-19 ERROR CODE [151] (ABNORMAL RISE IN WATER TEMPERATURE)
— EA-20 ERROR CODE [153] (ABNORMALITY IN INTAKE AIR TEMPERATURE SENSOR SYSTEM HIGH LEVEL)
— EA-21 ERROR CODE [154] (ABNORMALITY IN INTAKE AIR TEMPERATURE SENSOR SYSTEM LOW LEVEL)
— EA-22 ERROR CODE [221] (ABNORMALITY IN ATMOSPHERIC PRESSURE SENSOR SYSTEM HIGH LEVEL)
— EA-23 ERROR CODE [222] (ABNORMALITY IN ATMOSPHERIC PRESSURE SENSOR SYSTEM LOW)
— EA-24 ERROR CODE [234] (OVERSPEED)
— EA-25 ERROR CODE [254] (ABNORMALITY IN FUEL SHUT-OFF VALVE SYSTEM VOLTAGE)
— EA-26 ERROR CODE [259] (ABNORMALITY IN FUEL SHUT-OFF VALVE)
— EA-27 ERROR CODE [261] (ABNORMAL RISE IN FUEL TEMPERATURE)
— EA-28 ERROR CODE [263] (ABNORMALITY IN FUEL TEMPERATURE SENSOR SYSTEM HIGH LEVEL)
— EA-29 ERROR CODE [265] (ABNORMALITY IN FUEL TEMPERATURE SENSOR SYSTEM LOW LEVEL)
— EA-30 ERROR CODE [316] (ABNORMALITY IN FUEL PUMP ACTUATOR SYSTEM CURRENT)
— EA-31 ERROR CODE [318] (ABNORMALITY IN FUEL PUMP ACTUATOR)
— EA-32 ERROR CODE [343] (ABNORMALITY IN CONTROLLER INTERNAL COMMUNICATIONS)
— EA-33 ERROR CODE [346] (ABNORMALITY IN CONTROLLER POWER DOWN)
— EA-34 ERROR CODE [384] (ABNORMALITY IN PREHEATING HEATER CONTROL SYSTEM)
— EA-35 ERROR CODE [415] (ABNORMAL DROP IN OIL PRESSURE (LEVEL2))
— EA-36 ERROR CODE [423] (ABNORMALITY IN TIMING RAIL PRESSURE SENSOR SYSTEM IN RANGE)
— EA-37 ERROR CODE [431] (ABNORMALITY 1 IN IDLING VALIDATION SWITCH SYSTEM)
— EA-38 ERROR CODE [432] (IDLING VALIDATION PROCESS ERROR)
— EA-39 ERROR CODE [441] (ABNORMALITY IN BATTERY VOLTAGE LOW LEVEL)
— EA-40 ERROR CODE [442] (ABNORMALITY IN BATTERY VOLTAGE HIGH LEVEL)
— EA-41 ERROR CODE [451] (ABNORMALITY IN FUEL RAIL PRESSURE SENSOR SYSTEM HIGH LEVEL)
— EA-42 ERROR CODE [452] (ABNORMALITY IN FUEL RAIL PRESSURE SENSOR SYSTEM LOW LEVEL)
— EA-43 ERROR CODE [455] (ABNORMALITY IN FUEL RAIL ACTUATOR SYSTEM CURRENT)
— EA-44 ERROR CODE [467] (ABNORMALITY IN TIMING RAIL ACTUATOR CONTROL)
— EA-45 ERROR CODE [468] (ABNORMALITY IN FUEL RAIL ACTUATOR CONTROL)
— EA-46 ERROR CODE [514] (ABNORMALITY IN FUEL RAIL ACTUATOR)
— EA-47 ERROR CODE [527] (ABNORMALITY IN DUAL OUTPUT SOLENOID A SYSTEM)
— EA-48 ERROR CODE [551] (ABNORMALITY 2 IN IDLING VALIDATION SWITCH SYSTEM)
— EA-49 ERROR CODE [554] (ABNORMALITY IN FUEL RAIL PRESSURE SENSOR IN RANGE)
— TROUBLESHOOTING OF MAIN MONITOR SYSTEM (M MODE)
— ELECTRICAL CIRCUIT DIAGRAM FOR MAIN MONITOR
— ELECTRICAL CIRCUIT DIAGRAM FOR LAMP AND HORN
— M-1 MAIN MONITOR DOES NOT WORK
— M-2 WHEN STARTING SWITCH IS TURNED ON AND ENGINE IS STARTED IMMEDIATELY, ALL LAMP STAY LIT UP
— M-3 SPEEDOMETER DISPLAY DOES NOT WORK PROPERLY
— M-4 ABNORMALITY IN SHIFT INDICATOR
—- A) DISPLAYS N EVEN WHEN DIRECTION LEVER IS AT F
—- B) DISPLAYS N EVEN WHEN DIRECTIONAL LEVER IS AT R
—- C) DOES NOT DISPLAY N EVEN WHEN DIRECTIONAL LEVER IS AT N
—- D) DOES NOT DISPLAY 1ST EVEN WHEN SPEED CONTROL LEVER IS AT 1ST
—- E) DOES NOT DISPLAY 2ND EVEN WHEN SPEED CONTROL LEVER IS AT 2ND
—- F) DOES NOT DISPLAY 3RD EVEN WHEN SPEED CONTROL LVER IS AT 3RD
—- G) DOES NOT DISPLAY 4TH EVEN WHEN SPEED CONTROL LEVER IS AT 4TH
— M-5 HIGH BEAM DISPLAY DOES NOT LIGHT UP
— M-6 TURN SIGNAL DISPLAY DOES NOT LIGHT UP
—- A) L.H. TURN SIGNAL DOES NOT LIGHT UP
—- B) R.H. TURN SIGNAL DISPLAY DOES NOT LIGHT UP
— M-7 ABNORMALITY IN PARKING LAMP DISPLAY
—- A) PARKING LAMP DISPLAY DOES NOT LIGHT UP
—- B) PARKING LAMP DISPLAY STAYS LIT UP
— M-8 ABNORMALITY IN PREHEATING DISPLAY
—- A) PREHEATING DISPLAY DOES NOT LIGHT UP
—- B) PREHEATING DISPLAY STAYS LIT UP
— M-9 NIGHT LIGHTING OF MONITOR DOES NOT LIGHT UP
— M-10 ABNORMALITY IN FRONT WORKING LAMP
—- A) NEITHER MONITOR DISPLAY NOR FRONT WORKING LAMP LIGHT UP
—- B) WORKING LAMP LIGHT UP BUT MONITOR DISPLAY DOES NOT LIGHT UP
—- C) MONITOR DISPLAY LIGHT UP BUT WORKING LAMP DOES NOT LIGHT UP
— M-11 ABNORMALITY IN REAR WORKING LAMP
—- A) NEITHER MONITOR DISPLAY NOR REAR WORKING LAMP LIGHT UP
—- B) WORKING LAMP LIGHT UP BUT MONITOR DISPLAY DOES NOT LIGHT UP
—- C) MONITOR DISPLAY LIGHT UP BUT WORKING LAMP DOES NOT LIGHT UP
— M-12 ABNORMALITY IN TRANSMISSION CUT-OFF
—- A) WHEN TRANSMISSION CUT-OFF SWITCH IS PRESSED, CUT-OFF FUNCTION IS NOT SWITCHED AND DISPLAY DOES NOT CHANGE
—- B) WHEN TRANMISSION CUT-OFF SWITCH IS TURNED OFF, CUT-OFF FUNCTION IS ALWAYS ACTUATED
—- C) TRANSMISSION CUT-OFF SWITCH IS TURNED ON, BUT CUT-OFF FUNCTION IS NOT ACTUATED
— M-13 ABNORMALITY IN PARKING BRAKE DRAGGING WARNING
—- A) A WHEN PARKING BRAKE IS APPLIED, BUZZER SOUNDS INTERMITTENTLY AND CAUTION LAMP FLASHES EVEN WHEN DIRECTIONAL LEVER IS AT N
—- B) WHEN PARKING BRAKE IS APPLIED, BUZZER DOES NOT SOUND AND CAUTION LAMP DOES NOT LIGHT UP EVEN WHEN DIRECTIONAL LEVER IS AT
— M-14 WHEN PARKING BRAKE DRAGGING WARNING IS GIVEN, BUZZER AND CAUTION LAMP ARE ACTUATED CONTINUOUSLY, OR THEY ARE NOT ACTUATE
—- A) ACTUATED CONTINUOUSLY
—- B) NOT ACTUATED
— M-15 ABNORMALITY IN BUZZER
—- A) BUZZER DOES NOT SOUND FOR 3 SECONDS DURING SELF-CHECK WHEN STARTING SWITCH IS TURNED ON
—- B) BUZZER ALWAYS SOUNDS
— M-16 CONDITION OF MONITOR SWITCHES IS NOT STORED IN MEMORY
— M-17 ABNORMALITY IN FAILURE DISPLAY MODE
—- A) FAILURE DISPLAY MODE DOES NOT WORK
—- B) COUNT FOR TIME ELAPSED SINCE FAILURE IN FAILURE DISPLAY MODE DOES NOT ADVANCE
— M-18 ABNORMALITY IN EMERGENCY STEERING DISPLAY
—- A) EMERGENCY STEERING DISPLAY DOES NOT FLASH
—- B) EMERGENCY STEERING DISPLAY STAYS FLASHED
— M-19 ABNORMALITY IN AUTO-GREASING SYSTEM
—- A) FORCED GREASING CANNOT BE CARRIED OUT
—- B) MONITOR DISPLAY FLASHES RAPIDLY (2 TIMES/SEC)
—- C) WHEN NO MORE GREASE REMAINS, MONITOR DISPLAY FLASHES RAPIDLY (2 TIME/SEC)
—- D) MONITOR DISPLAY FLASHES SLOWLY (1 TIME/SEC)
—- E) MONITOR DISPLAY GOES OUT
— M-20 ABNORMALITY IN ECSS SYSTEM
—- A) DISPLAY DOES NOT CHANGE WHEN SWITCH IS PRESSED
—- B) MONITOR DISPLAY LIGHTS UP BUT ECSS FUNCTION DOES NOT WORK
—- C) MONITOR LAMP DOES NOT LIGHT UP
— M-21 FAILURE CODE IS NOT SENT TO MAIN MONITOR (ABNORMALITY IN NETWORK)
— TROUBLESHOOTING OF MAINTENANCE MONITOR SYSTEM (K MODE)
— ELECTRICAL CIRCUIT DIAGRAM FOR MAINTENANCE MONITOR
— K-1 WHEN STARTING SWITCH IS TURNED ON, ALL DISPLAYS ON MAINTENANCE MONITOR DO NOT LIGHT OF 3 SEC MAINTENANCE MONITOR DOES NO
—- A) NO LAMPS ON MAINTENANCE MONITOR LIGHT UP
—- B) SOME LAMPS DO NOT LIGHT UP
— K-2 WHEN STARTING SWITCH IS TURNED ON, ALL LAMPS ON MAINTENANCE MONITOR LIGHT UP BUT DO NOT GO OUT EVEN AFTER 3 SEC
— K-3 WHEN ENGINE IS STARTED IMMEDIATELY AFTER STARTING SWTICH IS TURNED ON WITHIN 3 SEC, NO LAMPS ON MAINTENANCE MONITOR GO OU
— K-4 WHEN ENGINE IS STOPPED AND STARTING SWITCH IS TURNED ON, CHECK ITEM DISPLAY FLASHES
—- A) ENGINE OIL LEVEL DISPALY FLASHES
—- B) ENGINE WATER LEVEL DISPLAY FLASHES
— K-5 WHEN ENGINE IS STOPPED AND STARTING SWITCH IS TURNED ON, CAUTION ITEM DISPLAY FLASHES
—- A) ENGINE OIL PRESSURE DISPLAY FLASHES
—- B) BATTERY CHARGE DISPLAY FLASHES
—- C) BRAKE OIL PRESSURE DISPLAY FLASHES
—- D) AIR CLEANER CLOGGED DISPLAY FLASHES
— K-6 CAUTION ITEM DISPLAY IS FLASHING, BUT CAUTION BUZZER DOES NOT SOUND
— K-7 NO MONITOR DISPLAY LIGHT UP, BUT CAUTION BUZZER SOUNDS
— K-8 CAUTION ITEM DISPLAY IS FLASHING, BUT CENTRAL CHECK LAMP OR CENTRAL CAUTION LAMP DOES NOT FLASH
—- A) CHECK LAMP
—- B) CAUTION LAMP
— K-9 NO MAINTENANCE MONITOR DISPLAY LIGHTS UP, BUT CENTRAL CHECK LAMP OR CENTRAL CAUTION LAMP LIGHTS UP
—- A) CHECK LAMP
—- B) CAUTION LAMP
— K-10 ONLY NIGHT LIGHTING OF MONITOR DOES NOT LIGHT UP WHEN LAMP SWITCH IS TURNED ON
— K-11 NIGHT LIGHTING OF MONITOR LIGHTS UP EVEN WHEN LAMP SWITCH IS OFF
— K-12 SERVICE METER DOES NOT WORK
— K-13 SERVICE METER IS RUNNING EVEN WHEN ENGINE IS STOPPED
— K-14 ABNORMALITY IN GAUGES
—- A) ABNORMALITY IN FUEL GAUGE
—- B) ABNORMALITY IN ENGINE WATER TEMPERATURE GAUGE
—- C) ABNORMALITY IN TORQUE CONVERTER OIL TEMPERATURE GAUGE
— TROUBLESHOOTING OF ELECTRICAL SYSTEM (E MODE)
— ELECTRICAL CIRCUIT DIAGRAM FOR POWER SUPPLY, ENGINE STARTING, ENGINE STOPPING, APS SYSTEM
— ELECTRICAL CIRCUIT DIAGRAM FOR TRANSMISSION AND PARKING BRAKE
— ELECTRICAL CIRCUIT DIAGRAM FOR LAMP AND HORN
— ELECTRICAL CIRCUIT DIAGRAM FOR BOOM KICK-OUT AND BUCKET POSITIONER
— E-1 ENGINE DOES NOT START
—- A) STARTING MOTOR DOES NOT TURN
—- B) STARTING MOTOR TURNS
— E-2 ENGINE DOES NOT STOP (SERIAL NO.: 50001-52000)
— E-3 ENGINE STOPS WHEN MACHINE IS TRAVELING (SERIAL NO.: 50001-52000)
— E-4A ABNORMALITY IN APS SYSTEM (SERIAL NO.: 50001-52000)
—- A) WHEN PREHEATING SWITCH IS TURNED AUTO, PREHEATING LAMP DOES NOTLIGHT UP, BUT NO PILOT LED ON APS CONTROLLER LIGHTS UP
—- B) WHEN PREHEATING SWITCH IS TURNED AUTO AND ENGINE WATER TEMPERATURE IS BELOW 20c, PREHEATING LAMP FLASHES, BUT PILOT LED ON
—- C) AFTER PREHEATING, FUEL IS NOT INJECTED FROM APS NOZZLE WHEN STARTING SWITCH IS TURNED START, BUT PILOT LET ON APS CONTROLL
—- D) LED 1 OF PILOT LED ON APS CONTROLLER SHOWS ABNORMAL
—- E) LED 2 OF PILOT LED ON APS CONTROLLER SHOWS ABNORMAL
—- F) LED 3 OF PILOT ON APS CONTROLLER SHOWS ABNORMAL
—- G) LED 4 OF PILOT LED ON APS CONTROLLER SHOWS ABNORMAL
—- H) LED 5 OF PILOT LED ON APS CONTROLLER SHOWS ABNORMAL
—- I) LED 6 OF PILOT ON APS CONTROLLER SHOWS ABNORMAL
—- J) WHEN PREHEATING SWITCH IS OFF, PREHEATING LAMP LIGHT UP
— E-4B PREHEATING FAULT
— E-5 PARKING BRAKE DOES NTO HAVE EFFECT
—- A) PARKING BRAKE HAS NOT EFFECT WHEN PARKING BRAKE HAS NO EFFECT WHEN PARKING BRAKE SWITCH IS TURNED ON
—- B) PARKING BRAKE HAS NO EFFECT AND DOES NOT WORK AS EMERGENCY BRAKE WHEN PARKING BRAKE PRESSURE DROPS
— E-6 PARKING BRAKE IS APPLIED WHEN MACHINE IS TRAVELING
— E-7 PARKING BRAKE IS RELEASED WHEN STARTING SWITCH IS TURNED ON
— E-8 TRANSMISSION DOES NOT CHANGE TO NEUTRAL WHEN PARKING BRAKE IS APPLIED, BUT PARKING BRAKE WORKS NORMALLY
— E-9 TRANSMISSION DOES NOT WORK PROPERLY
—- A) ABNORMALITY IN PARKING BRAKE CIRCUIT, TRANSMISSION CUT-OFF SWITCH CIRCUIT OR NEUTRALIZER RELAY CIRCUIT
—- B) NO CONTINUITY IN TRABEL FORWARD SOLENOID CIRCUIT
—- C) NO CONTINUITY IN TRAVEL REVERSE SOLENOID CIRCUIT
—- D) SHORT CIRCUIT TO CHASSIS GROUND IN DIRECTIONAL SOLENOID CIRCUIT
—- E) ABNORMALITY IN SHIFT SOLENOID CIRCUIT
—- F) SHORT CIRCUIT TO CHASSIS GROUND IN SHIFT SOLENOID CIRCUIT
— E-10 KICK-DOWN SWITCH DOES NOT WORK
— E-11 KICK-DOWN WORKS ONLY WHEN KICK-DOWN SWITCH IS BEING TURNED ON
— E-12 KICK-DOWN ALWAYS WORKS
— E-13 KICK-DOWN SWITCH WORKS EVEN WHEN TRAVELING FORWARD IN 2ND
— E-14 BOOM KICK-OUT DOES NOT WORK
— E-15 DEFECTIVE BUCKET POSITIONER
— E-16 POWER WINDOW DOES NOT WORK
—- A) POWER WINDOW DOES NOT RISE
—- B) POWER WINDOW DOES NOT LOWER
— E-17 ABNORMALITY IN FRONT WORKING LAMP
— E-18 ABNORMALITY IN REAR WORKING LAMP
— E-19 ABNORMALITY IN TRANSMISSION CUT-OFF
— E-20 ABNORMALITY IN PARKING BRAKE DRAGGING WARNING
— E-21 ABNORMALITY IN BUZZER
— TROUBLESHOOTING OF HYDRAULIC AND MECHANICAL SYSTEM (H MODE)
— POWER TRAIN
—- H-1 MACHINE DOES NOT START
—- H-2 TRAVEL SPEED IS SLOW, OR LACKS POWER IN ALL SPEED RANGES
—- H-3 EXCESSIVE TIME LAG WHEN STARTING MACHINE OR SHIFTING GEAR
—- H-4 TORQUE CONVERTER OIL TEMPERATURE IS HIGH
— STEERING SYSTEM
—- H-5 STEERING WHEEL DOES NOT TURN
—- H-6 STEERING DOES NOT TURN (MACHINE WITH JOYSTICK)
—- H-7 TURNING, RESPONSE OF STEERING IS POOR
—- H-8 TURNING, RESPONSE OF STEERING IS POOR [MACHINE WITH JOYSTICK]
—- H-9 STEERING IS HEAVY
—- H-10 JOYSTICK IS HEAVY [MACHINE WITH JOYSTICK]
—- H-11 STEERING WHEEL SHAKES OR JERKS
—- H-12 STEERING SHAKES OR THERE IS EXCESSIVE SHOCK [MACHINE WITH JOYSTICK]
—- H-13 TURNING RADIUS IS DIFFERENT BETWEEN LEFT AND RIGHT AT MAXIMUM STEERING
— BRAKE SYSTEM
—- H-14 WHEEL BRAKES DO NOT WORK OR BRAKING EFFECT IS POOR
—- H-15 WHEEL BRAKES ARE NOT RELEASED OR BRAKES DRAG
—- H-16 PARKING BRAKE DOES NOT WORK OR BRAKING EFFECT IS POOR
—- H-17 PARKING BRAKE IS NOT RELEASED OR BRAKE DRAGS (INCLUDING EMERGENCY RELEASE SYSTEM)
— WORK EQUIPMENT
—- H-18 NEITHER BOOM NO BUCKET MOVE
—- H-19 BOTH BOOM AND BUCKET ARE SLOW OR LACK POWER
—- H-20 BOOM DOES NOT MOVE
—- H-21 BOOM DOES NOT MOVE [MACHINES WITH REMOTE BOOM CONTROL]
—- H-22 BOOM IS SLOW OR BOOM LACK POWER
—- H-23 BOOM IS SLOW OR BOOM LACK POWER [MACHINES WITH REMOTE BOOM CONTROL]
—- H-24 BOOM CANNOT BE SET TO FLOAT OR CANNOT BE RELEASED FROM FLOAT
—- H-25 BOOM DROPS MOMENTARILY WHEN CONTROL LEVER IS OPERATED FROM HOLD TO RAISE
—- H-26 REMOTE BOOM CONTROL DOES NOT WORK [MACHINES WITH REMOTE CONTROL]
—- H-27 EXCESSIVE HYRAULIC DRIFT OF BOOM
—- H-28 BUCKET DOES NOT MOVE
—- H-29 BUCKET IS SLOW OR LACKS POWER
—- H-30 EXCESSIVE HYDRAULIC DRIFT OF BUCKET
—- H-31 ECSS DOES NOT WORK, AND THERE IS PITCHING AND BOUNCING [MACHINES WITH ECSS]
— TROUBLESHOOTING OF TRANSMISSION CONTROL SYSTEM (T MODE) ( ONLY FOR MACHINE WITH JOYSTICK AND AUTOMATIC SHIFT CONTROL)
— METHOD FOR DISPLAYING ACTION CODE AND FAILURE CODE
— JUDGEMENT TABLE FOR TRANSMISSION CONTROL SYSTEM
— ACTION TAKEN BY CONTROLLER WHEN ABNORMALITY OCCURS, AND PROBLEMS ON MACHINE
— ELECTRICAL CIRCUIT DIAGRAM FOR TRANSMISSION CONTROL SYSTEM
— T-1 FAILURE CODE [10] (SHORT CIRCUIT, DISCONNECTION OR SHORT CIRCUIT WITH POWER SUPPLY IN BACKUP LAMP RELAY) IS DISPLAYED
— T-2 FAILURE CODE [12] (SHORT CIRCUIT, DISCONNECTION, OR SHORT CIRCUIT WITH POWER SUPPLY IN F SOLENOID) IS DISPLAYED
— T-3 FAILURE CODE [13] (SHORT CIRCUIT, DISCONNECTION, OR SHORT CIRCUIT WITH POWER SUPPLY IN R SOLENOID) IS DISPLAYED
— T-4 FAILURE CODE [14] (SHORT CIRCUIT, DISCONNECITON, OR SHORT CIRCUIT WITH POWER SUPPLY IN 1ST SOLENOID) IS DISPLAYED
— T-5 FAILURE CODE [15] (SHORT CIRCUIT, DISCONNECTION, OR SHORT CIRCUIT WITH POWER SUPPLY IN 2ND SOLENOID) IS DISPLAYED
— T-6 FAILURE CODE [16] (SHORT CIRCUIT, DISCONNECTION, OR SHORT CIRCUIT WITH POWER SUPPLY IN 3RD SOLENOID) IS DISPLAYED
— T-7 FAILURE CODE [17] (SHORT CIRCUIT, DISCONNECTION, OR SHORT CIRCUIT WITH POWER SUPPLY IN 4TH SOLENOID) IS DISPLAYED
— T-8 FAILURE CODE [19] (SHORT CIRCUIT, OR DISCONNECTION IN JOYSTICK DIRECTIONAL SWITCH SYSTEM) IS DISPLAYED
— T-9 FAILURE CODE [20] (SHORT CIRCUIT, OR DISCONNECTION IN DIRECTIONAL SWITCH SYSTEM) IS DISPLAYED
— T-10 FAILURE CODE [21] (SHORT CIRCUIT, OR DISCONNECTION IN SHIFT SWITCH SYSTEM) IS DISPLAYED
— T-11 FAILURE CODE [22] (DISCONNECTION IN TRAVEL SPEED SENSOR) IS DISPLAYED
— T-12 FAILURE CODE [23] (SHORT CIRCUIT, OR DISCONNECTON IN ENGINE SPEED SENSOR SYSTEM) IS DISPLAYED
— T-13 SHIFT-UP DOES NOT WORK
— T-14 SHIFT-DOWN DOES NOT WORK
— T-15 TRANSMISSION CUTOFF DOES NOT WORK OR STAYS WORKING
— T-16 NEUTRALIZER DOES NOT WORK OR STAYS WORKING
— T-17 BUZZER DOES NOT WORK
— T-18 ABNORMALITY IN NETWORK SYSTEM
— T-19 ABNORMALITY IN TRANSMISSION CONTROLLER POWER SUPPLY
— T-20 SHORT CIRCUIT IN TRAVEL SPEED SENSOR SYSTEM
— T-21 ABNORMALITY IN MACHINE SELECTION WIRING HARNESS
— TROUBLESHOOTING OF JOYSTICK STEERING SYSTEM (J MODE) (ONLY FOR MACHINE WITH JOYSTICK AND AUTOMATIC SHIFT CONTROL)
— JUDGEMENT TABLE FOR JOYSTICK CONTROL SYSTEM
— ACTION TAKEN BY CONTROLLER WHEN ABNORMALITY OCCURS AND PROBLEMS ON MACHINE
— ELECTRICAL CIRCUIT DIAGRAM FOR JOYSTICK STEERING SYSTEM
— J-1 FAILURE CODE [56] (SHORT CIRCUIT, OR DISCONNECTION IN CAUTION RELAY OUTPUT) IS DISPLAYED
— J-2 FAILURE CODE [57] (SHORT CIRCUIT IN STEERING RIGHT SOLENOID (DETECTED WHEN SIGNAL IS OUT PUT)) IS DISPLAYED
— J-3 FAILURE CODE [58] (SHORT CIRCUIT IN STEERING LEFT SOLENOID (DETECTED WITH SIGNAL IS OUTPUT)) IS DISPLAYED
— J-4 FAILURE CODE [59] (SHORT CIRCUIT IN STEERING RIGHT SOLENOID (POWER SUPPLY SIDE)) IS DISPLAYED
— J-5 FAILURE CODE [60] (SHORT CIRCUIT IN STEERING LEFT SOLENOID (POWER SUPPLY SIDE)) IS DISPLAYED
— J-6 FAILURE CODE [61] (SHORT CIRCUIT, OR DISCONNECTION IN STEERING SOLENOID CUT RELAY OUTPUT ) IS DISPLAYED
— J-7 FAILURE CODE [62] (SHORT CIRCUIT, OR DISCONNECTION IN JOYSTICK STEERING NEUTRAL CIRCUIT) IS DISPLAYED
— J-8 FAILURE CODE [63] (SHORT CIRCUIT, OR DISCONNECTION IN JOYSTICK STEERING LEVER POTENTIOMETER) IS DISPLAYED
— J-9 ABNORMALITY IN POWER SUPPLY, OR POWER SUPPLY VOLTAGE
— J-10 ABNORMALITY IN JOYSTICK STEERING ON-OFF CIRCUIT
— J-11 DISCONNECTION IN STEERING RIGHT SOLENOID
— J-12 DISCONNECTION IN STEERING LEFT SOLENOID
— TROUBLESHOOTING OF ECSS (ELECTRONICALLY CONTROLLED SUSPENSION SYSTEM) (D MODE)
— ACTION TAKEN BY TRANMISSION CONTROLLER WHEN ABNORMALITY OCCURS AND PROBLEMS ON MACHINE
— ELECTRICAL CIRCUIT DIAGRAM FOR ECSS
— D-1 ECSS DOES NOT WORK
—- A) ERROR CODE [D0] IS DISPLAYED
—- B) ERROR CODE [D1] IS DISPLAYED
—- C) ERROR CODE [D2] IS DISPLAYED
—- D) ERROR CODE [D3] IS DISPLAYED
—- E) ERROR CODE [D4] IS DISPLAYED
—- F) ERROR CODE [D5] IS DISPLAYED
—- G) ERROR CODE [D6] IS DISPLAYED
—- H) NO ABNORMALITY DISPLAY IS GIVEN
— D-2 ECSS CANNOT BE CANCELLED
30 DISASSEMBLY AND ASSEMBLY
– METHOD OF USING MANUAL
– PRECAUTIONS WHEN CARRYING OUT OPERATION
– SPECIAL TOOL LIST
– SKETCHES OF SPECIAL TOOLS
– STARTING MOTOR
— REMOVAL AND INSTALLATION
– ALTERNATOR
— REMOVAL AND INSTALLATION
– ENGINE OIL COOLER (SERIAL NO.: 50001-52000)
— REMOVAL AND INSTALLATION
– FUEL INJECTION PUMP (SERIAL NO.: 50001-52000)
— REMOVAL AND INSTALLATION
– WATER PUMP (SERIAL NO.: 50001-52000)
— REMOVAL AND INSTALLATION
– NOZZLE HOLDER (SERIAL NO.: 50001-52000)
— REMOVAL AND INSTALLATION
– TURBOCHARGER (SERIAL NO.: 50001-5200)
— REMOVAL
— INSTALLATION
– ENGINE FRONT SEAL (SERIAL NO.: 50001-52000)
— REPLACEMENT
– ENGINE REAR SEAL (SERIAL NO.: 50001-52000)
— REPLACEMENT
– CYLINDER HEAD (SERIAL NO.: 50001-52000)
— REMOVAL
— INSTALLATION
– THERMOSTAT (SERIAL NO.: 50001-52000)
— REMOVAL AND INSTALLATION
– AFTERCOOLER (SERIAL NO.: 50001-52000)
— REMOVAL
— INSTALLATION
– RADIATOR
— REMOVAL
— INSTALLATION
– RADIATOR (WITH SUCTION FAN)
— REMOVAL
— INSTALLATION
– ENGINE AND TORQUE CONVERTER ASSEMBLY
— REMOVAL
— INSTALLATION
– TORQUE CONVERTER
— REMOVAL AND INSTALLATION
— DISASSEMBLY
— ASSEMBLY
– TRANSMISSION
— REMOVAL
— INSTALLATION
— DISASSEMBLY
— ASSEMBLY
– TRANSMISSION VALVE
— REMOVAL AND ASSEMBLY
– TRANSFER
— DISASSEMBLY
— ASSEMBLY
– CENTER SUPPORT
— REMOVAL AND INSTALLATION
— DISASSEMBLY
— ASSEMBLY
– DRIVE SHAFT
— DISASSEMBLY
— ASSEMBLY
– FRONT AXLE
— REMOVAL
— INSTALLATION
– FRONT DIFFERENTIAL
— REMOVAL
— INSTALLATION
– REAR AXLE
— REMOVAL
— INSTALLATION
– REAR DIFFERENTIAL
— REMOVAL
— INSTALLATION
– DIFFERENTIAL GEAR
— DISASSEMBLY
— ASSEMBLY
– LIMITED SLIP DIFFERENTIAL
— DISASSEMBLY
— ASSEMBLY
– FINAL DRIVE
— REMOVAL
— ASSEMBLY
– ORBIT-ROLL
— REMOVAL AND INSTALLATION
– STEERING CYLINDER
— REMOVAL
— INSTALLATION
— DISASSEMBLY
— ASSEMBLY
– STEERING VALVE
— REMOVAL
— INSTALLATION
– CUT-OFF VALVE
— REMOVAL AND INSTALLATION
– BRAKE VALVE
— REMOVAL AND INSTALLATION
– BRAKE VALVE (R.H.)
— DISASSEMBLY
— ASSEMBLY
– BRAKE VALVE (L.H.)
— DISASSEMBLY
— ASSEMBLY
– SLACK ADJUSTER
— REMOVAL AND INSTALLATION
— DISASSEMBLY
— ASSEMBLY
– BRAKE
— REMOVAL AND INSTALLATION
— DISASSEMBLY
— ASSEMBLY
– HYDRAULIC PUMP
— REMOVAL
— INSTALLATION
– HYDRAULIC TANK
— REMOVAL
— INSTALLATION
– HYDRAULIC FILTER
— REMOVAL AND INSTALLATION
– PPC VALVE
— REMOVAL AND INSTALLATION
— DISASSEMBLY AND ASSEMBLY
– WORK EQUIPMENT VALVE
— REMOVAL
— INSTALLATION
– MAIN CONTROL VALVE
— DISASSEMBLY
— ASSEMBLY
– DUMP CYLINDER
— REMOVAL
— INSTALLATION
– LIFT CYLINDER
— REMOVAL
— INSTALLATION
– LIFT CYLINDER AND DUMP CYLINDER
— DISASSEMBLY
— ASSEMBLY
– CENTER HINGE PIN
— REMOVAL
— INSTALLATION
– WORK EQUIPMENT
— REMOVAL
— INSTALLATION
– BULKHEAD
— REMOVAL
— INSTALLATION
– FLOOR FRAME
— REMOVAL
— INSTALLATION
– COUNTERWEIGHT
— REMOVAL AND INSTALLATION
– FUEL TANK
— REMOVAL
— INSTALLATION
– CAB
— REMOVAL
— INSTALLATION
– STOP VALVE
— REMOVAL AND INSTALLATION
– ACCUMULATOR
— REMOVAL AND INSTALLATION
– ACCUMULATOR CHARGE VALVE
— REMOVAL AND INSTALLATION
– PARKING BRAKE SOLENOID VALVE
— REMOVAL AND INSTALLATION
– DIVERTER VALVE
— REMOVAL AND INSTALLATION
– EMERGENCY STEERING PUMP
— REMOVAL AND INSTALLATION
– PARKING BRAKE
— REMOVAL AND INSTALLATION
– PARKING BRAKE CALIPERS
— DISASSEMBLY
— ASSEMBLY
– PARKING BRAKE PAD
— REMOVAL AND INSTALLATION
– REAR TIRES
— REMOVAL AND INSTALLATION
– AIR CONDITIONER COMPRESSOR
— REMOVAL
— INSTALLATION
– AIR CONDITIONER CONDENSER
— REMOVAL AND INSTALLATION
– RECEIVER TANK
— REMOVAL AND INSTALLATION
– AIR CONDITIONER UNIT
— REMOVAL
— INSTALLATION
– MONITOR
— REMOVAL AND INSTALLATION
40 MAINTENANCE STANDARD
– ENGINE MOUNT
– TRANSMISSION MOUNT
– TORQUE CONVERTER
– TORQUE CONVERTER REGULATOR VALVE (SERIAL NO.: 52001 AND UP)
– TRANSMISSION
– TRANSFER
– TRANSMISSION CONTROL VALVE
– DRIVE SHAFT
– CENTER SUPPORT
– DIFFERENTIAL
– LIMITED SLIP DIFFERENTIAL (OP)
– FINAL DRIVE
– AXLE MOUNT
– CENTER HINGE PIN
– STEERING COLUMN
– STEERING VALVE
– EMERGENCY STEERING PUMP
– DIVERTER VALVE
– STEERING CYLINDER MOUNT
– BRAKE VALVE
– SLACK ADJUSTER
– BRAKE
– PARKING BRAKE
– HYDRAULIC PUMP
– PPC VALVE
– CUT-OFF VALVE
– MAIN CONTROL VALVE
– HYDRAULIC CYLINDER
– WORK EQUIPMENT LINKAGE
– BUCKET
– BUCKET POSITIONER AND BOOM KICK-OUT
– ROPS CANOPY
90 OTHERS
– ELECTRIC CIRCUIT DIAGRAM
— FOR STANDARD MACHINE (SERIAL NO.: 50001-52000)
— ELECTRIC CIRCUIT DIAGRAM (1/4)
— ELECTRIC CIRCUIT DIAGRAM (2/4)
— ELECTRIC CIRCUIT DIAGRAM (3/4)
— ELECTRIC CIRCUIT DIAGRAM (4/4)
— FOR MACHINE WITH JOYSTICK AND AUTOMATIC SHIFT CONTROL (SERIAL NO.: 50001-52000)
— ELECTRIC CIRCUIT DIAGRAM (1/4)
— ELECTRIC CIRCUIT DIAGRAM (2/4)
— ELECTRIC CIRCUIT DIAGRAM (3/4)
— ELECTRIC CIRCUIT DIAGRAM (4/4)
— FOR STANDARD MACHINE (SERIAL NO.: 52001 AND UP)
— ELECTRIC CIRCUIT DIAGRAM (1/5)
— ELECTRIC CIRCUIT DIAGRAM (2/5)
— ELECTRIC CIRCUIT DIAGRAM (3/5)
— ELECTRIC CIRCUIT DIAGRAM (4/5)
— ELECTRIC CIRCUIT DIAGRAM (5/5)
— FOR MACHINE WITH JOYSTICK AND AUTOMATIC SHIFT CONTROL (SERIAL NO. 52001 AND UP)
— ELECTRIC CIRCUIT DIAGRAM (1/3)
— ELECTRIC CIRCUIT DIAGRAM (2/3)
— ELECTRIC CIRCUIT DIAGRAM (3/3)