Komatsu PC1250-11E0 PC1250SP-11E0 Hydraulic Excavator Operation & Maintenance Manual EENAM03930 PDF

Komatsu PC1250-11E0 PC1250SP-11E0 Hydraulic Excavator Operation & Maintenance Manual EENAM03930 – PDF DOWNLOAD

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Komatsu PC1250-11E0 PC1250SP-11E0 Hydraulic Excavator Operation & Maintenance Manual EENAM03930 – PDF DOWNLOAD

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Komatsu PC1250-11E0 PC1250SP-11E0 Hydraulic Excavator Operation & Maintenance Manual EENAM03930 – PDF DOWNLOAD

• The Komatsu PC1250-11E0 PC1250SP-11E0 Hydraulic Excavator Operation & Maintenance Manual (EENAM03930) is an essential resource for anyone who operates or maintains Komatsu PC1250-11E0 or PC1250SP-11E0 hydraulic excavators. This manual provides important information on the proper operation and maintenance of the hydraulic excavator, which is crucial for ensuring its longevity and performance.
• The Komatsu PC1250-11E0 PC1250SP-11E0 Hydraulic Excavator Operation & Maintenance Manual covers a wide range of topics, including daily pre-operation checks, operation instructions, maintenance procedures, and more. The manual provides clear and detailed instructions for each procedure, along with illustrations and diagrams to help users understand the process. The instructions are written in an easy-to-follow format, and are designed to help users avoid common mistakes that can lead to incorrect operation or damage to the hydraulic excavator.
• One of the key features of the Komatsu PC1250-11E0 PC1250SP-11E0 Hydraulic Excavator Operation & Maintenance Manual is its focus on safety. The manual includes important safety information and precautions to take during the operation and maintenance process, which can help users avoid injury and ensure that their hydraulic excavator is operated and maintained safely.
• In addition to providing important information on the operation and maintenance of the hydraulic excavator, the manual also includes information on the latest tools and technologies used in the maintenance and repair of hydraulic excavators. This information can help users take advantage of the latest advancements in the field to operate and maintain their hydraulic excavator more efficiently and effectively.
• The Komatsu PC1250-11E0 PC1250SP-11E0 Hydraulic Excavator Operation & Maintenance Manual is a comprehensive resource that can help users operate and maintain their hydraulic excavator correctly. The manual is an essential tool for anyone who wants to ensure that their hydraulic excavator is operated and maintained properly and is ready to perform at its best. It can also save users time and money by enabling them to avoid common mistakes and avoid the need for costly repairs.
• In conclusion, the Komatsu PC1250-11E0 PC1250SP-11E0 Hydraulic Excavator Operation & Maintenance Manual (EENAM03930) is an indispensable resource for anyone who operates or maintains Komatsu PC1250-11E0 or PC1250SP-11E0 hydraulic excavators. The manual provides a wealth of information that can help users operate and maintain their hydraulic excavator correctly, and can help ensure that their hydraulic excavator is ready to perform at its best for many years to come.

TABLE OF CONTENTS:

Komatsu PC1250-11E0 PC1250SP-11E0 Hydraulic Excavator Operation & Maintenance Manual EENAM03930 – PDF DOWNLOAD

FOREWORD…………………………………………………………………………………………………………………………….. 3
CONTENTS…………………………………………………………………………………………………………………………. 4
READ THIS MANUAL………………………………………………………………………………………………………………….. 8
KOMATSU MACHINE OPERATOR PRIVACY POLICY……………………………………………………………………………………………… 9
SAFETY INFORMATION………………………………………………………………………………………………………………… 12
NOISE……………………………………………………………………………………………………………………………. 13
VIBRATION LEVELS………………………………………………………………………………………………………………….. 14
VIBRATION – OPERATING CONDITION…………………………………………………………………………………………………. 14
GUIDE TO REDUCE VIBRATION LEVELS ON MACHINE………………………………………………………………………………………. 14
INTRODUCTION……………………………………………………………………………………………………………………… 16
MAIN USE OF MACHINE……………………………………………………………………………………………………………. 16
DIRECTIONS OF MACHINE………………………………………………………………………………………………………….. 16
VISIBILITY FROM OPERATOR’S SEAT…………………………………………………………………………………………………. 17
ENGINE TECHNOLOGY TO CONFORM EXHAUST GAS EMISSION…………………………………………………………………………………….. 19
PRODUCT INFORMATION……………………………………………………………………………………………………………….. 20
LOCATION OF PRODUCT IDENTIFICATION NUMBER (PIN)/MACHINE SERIAL NO. PLATE…………………………………………………………….. 20
LOCATION OF ENGINE NUMBER PLATE…………………………………………………………………………………………………. 20
SERVICE METER LOCATION…………………………………………………………………………………………………………. 21
FLUORINATED GREENHOUSE GASES……………………………………………………………………………………………………. 21
YOUR MACHINE SERIAL NUMBERS AND DISTRIBUTOR………………………………………………………………………………………. 21
SERIAL PLATE………………………………………………………………………………………………………………….. 22
DECLARATION OF CONFORMITY………………………………………………………………………………………………………. 22
SAFETY………………………………………………………………………………………………………………………………. 23
SAFETY LABELS…………………………………………………………………………………………………………………….. 24
LOCATION OF SAFETY LABELS………………………………………………………………………………………………………. 25
CONTENTS OF SAFETY LABELS………………………………………………………………………………………………………. 26
GENERAL PRECAUTIONS COMMON TO OPERATION AND MAINTENANCE……………………………………………………………………………….. 33
PRECAUTIONS BEFORE STARTING OPERATION……………………………………………………………………………………………. 33
ENSURE SAFE OPERATION………………………………………………………………………………………………………. 33
UNDERSTAND THE MACHINE……………………………………………………………………………………………………… 33
PREPARATIONS FOR SAFE OPERATION…………………………………………………………………………………………………. 33
PRECAUTIONS FOR SAFETY-RELATED EQUIPMENT……………………………………………………………………………………… 33
INSPECT MACHINE……………………………………………………………………………………………………………. 33
WEAR WELL-FITTING CLOTHES AND PROTECTIVE EQUIPMENT…………………………………………………………………………….. 33
KEEP MACHINE CLEAN…………………………………………………………………………………………………………. 34
PRECAUTIONS FOR INSIDE OPERATOR’S COMPARTMENT…………………………………………………………………………………. 34
PROVIDE FIRE EXTINGUISHER AND FIRST AID KIT…………………………………………………………………………………… 34
IF ANY PROBLEM IS FOUND…………………………………………………………………………………………………….. 34
PRECAUTIONS TO PREVENT FIRE…………………………………………………………………………………………………….. 35
ACTIONS IF FIRE OCCURS……………………………………………………………………………………………………… 35
PREVENT FIRE………………………………………………………………………………………………………………. 35
PRECAUTIONS WHEN GETTING ON OR OFF MACHINE……………………………………………………………………………………….. 37
USE HANDRAILS AND STEPS WHEN GETTING ON OR OFF MACHINE…………………………………………………………………………. 37
NO JUMPING ON OR OFF MACHINE………………………………………………………………………………………………… 37
LIFTING OF PERSONNEL PROHIBITED……………………………………………………………………………………………… 37
NO PEOPLE ON ATTACHMENTS……………………………………………………………………………………………………. 38
PRECAUTIONS WHEN STANDING UP FROM OPERATOR’S SEAT……………………………………………………………………………… 38
PRECAUTIONS WHEN LEAVING MACHINE…………………………………………………………………………………………….. 38
EMERGENCY EXIT FROM OPERATOR’S CAB…………………………………………………………………………………………… 38
ELECTROMAGNETIC INTERFERENCE………………………………………………………………………………………………… 38
DO NOT GET CAUGHT IN WORK EQUIPMENT……………………………………………………………………………………………… 40
PRECAUTIONS RELATED TO PROTECTIVE STRUCTURES……………………………………………………………………………………… 40
PROTECTION AGAINST FALLING, FLYING OR INTRUDING OBJECTS……………………………………………………………………………. 40
UNAUTHORIZED MODIFICATION………………………………………………………………………………………………………. 41
PRECAUTIONS RELATED TO ATTACHMENTS AND OPTIONS……………………………………………………………………………………. 41
PRECAUTIONS RELATED TO CAB GLASS………………………………………………………………………………………………… 41
PRECAUTIONS WHEN RUNNING ENGINE INSIDE BUILDING…………………………………………………………………………………… 41
PRECAUTIONS FOR OPERATION………………………………………………………………………………………………………….. 42
PRECAUTIONS FOR JOBSITE………………………………………………………………………………………………………… 42
INVESTIGATE AND CONFIRM JOBSITE CONDITIONS……………………………………………………………………………………. 42
PRECAUTIONS WHEN WORKING ON LOOSE GROUND……………………………………………………………………………………… 42
DO NOT GO CLOSE TO HIGH-VOLTAGE CABLES……………………………………………………………………………………….. 43
ENSURE GOOD VISIBILITY……………………………………………………………………………………………………… 43
CHECK SIGNS AND SIGNALMAN’S SIGNALS………………………………………………………………………………………….. 44
BEWARE OF ASBESTOS DUST…………………………………………………………………………………………………….. 44
START ENGINE………………………………………………………………………………………………………………….. 45
USE WARNING TAGS…………………………………………………………………………………………………………… 45
CHECKS AND ADJUSTMENT BEFORE STARTING ENGINE………………………………………………………………………………….. 45
PRECAUTIONS WHEN STARTING ENGINE…………………………………………………………………………………………….. 46
IN COLD WEATHER……………………………………………………………………………………………………………. 46
START ENGINE WITH JUMPER CABLES……………………………………………………………………………………………… 47
PRECAUTIONS FOR OPERATION………………………………………………………………………………………………………. 48
CHECKS BEFORE OPERATION…………………………………………………………………………………………………….. 48
PRECAUTIONS WHEN TRAVELLING IN FORWARD OR REVERSE AND SWINGING………………………………………………………………….. 48
PRECAUTIONS WHEN TRAVELING………………………………………………………………………………………………….. 50
PRECAUTIONS WHEN TRAVELING ON SLOPES…………………………………………………………………………………………. 51
PRECAUTIONS WHEN OPERATING ON SLOPES…………………………………………………………………………………………. 52
PROHIBITED OPERATIONS………………………………………………………………………………………………………. 52
PRECAUTIONS WHEN OPERATING ON SNOW OR FROZEN SURFACES………………………………………………………………………….. 54
PRECAUTIONS WHEN PARKING MACHINE…………………………………………………………………………………………….. 54
PRECAUTIONS FOR TRANSPORTATION………………………………………………………………………………………………….. 55
PRECAUTIONS WHEN LOADING AND UNLOADING……………………………………………………………………………………….. 55
TOWING AND BEING TOWED…………………………………………………………………………………………………………. 56
PRECAUTIONS FOR TOWING AND BEING TOWED……………………………………………………………………………………….. 56
LIFTING OPERATION BY USING BUCKET WITH HOOK………………………………………………………………………………………. 57
PRECAUTIONS FOR LIFTING OPERATIONS…………………………………………………………………………………………… 57
PRECAUTIONS FOR MAINTENANCE………………………………………………………………………………………………………… 58
PRECAUTIONS BEFORE STARTING INSPECTION AND MAINTENANCE…………………………………………………………………………….. 58
DISPLAY WARNING TAG DURING INSPECTION AND MAINTENANCE………………………………………………………………………….. 58
KEEP WORK PLACE CLEAN AND TIDY………………………………………………………………………………………………. 58
SELECT SUITABLE PLACE FOR INSPECTION AND MAINTENANCE…………………………………………………………………………… 58
ONLY AUTHORIZED PERSONNEL…………………………………………………………………………………………………… 58
APPOINT LEADER WHEN WORKING WITH OTHERS………………………………………………………………………………………. 58
STABILITY…………………………………………………………………………………………………………………. 59
GUARDS……………………………………………………………………………………………………………………. 59
END OF SERVICE LIFE………………………………………………………………………………………………………… 59
STOP ENGINE BEFORE CARRYING OUT INSPECTION AND MAINTENANCE……………………………………………………………………… 60
TWO WORKERS FOR MAINTENANCE WHEN ENGINE IS RUNNING…………………………………………………………………………….. 61
PRECAUTIONS WHEN INSTALLING, REMOVING, OR STORING ATTACHMENTS…………………………………………………………………… 61
PRECAUTIONS FOR WORKING AT HIGH PLACES……………………………………………………………………………………….. 61
PRECAUTIONS WHEN WORKING ON MACHINE………………………………………………………………………………………….. 62
PRECAUTIONS WHEN WORKING UNDER MACHINE OR WORK EQUIPMENT……………………………………………………………………….. 62
USE PROPER TOOLS…………………………………………………………………………………………………………… 62
PRECAUTIONS FOR CHECK AND MAINTENANCE……………………………………………………………………………………………. 63
TURN BATTERY DISCONNECT SWITCH TO OFF POSITION………………………………………………………………………………… 63
PRECAUTIONS FOR WELDING…………………………………………………………………………………………………….. 63
HANDLE BATTERY…………………………………………………………………………………………………………….. 63
PRECAUTIONS WHEN USING HAMMER……………………………………………………………………………………………….. 64
PRECAUTIONS FOR HIGH-TEMPERATURE COOLANT……………………………………………………………………………………… 64
PRECAUTIONS FOR HIGH-TEMPERATURE OIL…………………………………………………………………………………………. 65
PRECAUTIONS FOR HIGH-TEMPERATURE PARTS……………………………………………………………………………………….. 65
PRECAUTIONS FOR HIGH-PRESSURE OIL……………………………………………………………………………………………. 65
PRECAUTIONS FOR HIGH-PRESSURE FUEL…………………………………………………………………………………………… 65
HANDLE HIGH-PRESSURE HOSES AND PIPING………………………………………………………………………………………… 66
PRECAUTIONS FOR HIGH VOLTAGE………………………………………………………………………………………………… 66
PRECAUTIONS FOR NOISE………………………………………………………………………………………………………. 66
PRECAUTIONS FOR HIGH-PRESSURE GREASE WHEN ADJUSTING TRACK TENSION……………………………………………………………….. 67
DO NOT DISASSEMBLE RECOIL SPRING…………………………………………………………………………………………….. 68
HANDLE ACCUMULATOR AND GAS SPRING……………………………………………………………………………………………. 68
PRECAUTIONS FOR COMPRESSED AIR………………………………………………………………………………………………. 68
MAINTENANCE OF AIR CONDITIONER………………………………………………………………………………………………. 68
CHEMICAL HAZARD……………………………………………………………………………………………………………. 68
PRECAUTIONS FOR DISPOSING OF WASTE MATERIALS………………………………………………………………………………….. 69
METHOD FOR SELECTING WINDOW WASHER FLUID……………………………………………………………………………………… 69
PERIODIC REPLACEMENT OF DEFINED LIFE PARTS……………………………………………………………………………………. 69
OPERATION……………………………………………………………………………………………………………………………. 71
GENERAL VIEW……………………………………………………………………………………………………………………… 72
MACHINE EQUIPMENT NAME…………………………………………………………………………………………………………. 72
CAB EQUIPMENT NAMES……………………………………………………………………………………………………………. 74
CONTROLS AND GAUGES NAMES………………………………………………………………………………………………………. 75
MACHINE MONITOR EQUIPMENT NAME………………………………………………………………………………………………. 76
EXPLANATION OF COMPONENTS………………………………………………………………………………………………………….. 78
EXPLANATION OF MACHINE MONITOR EQUIPMENT…………………………………………………………………………………………. 78
BASIC OPERATION OF MACHINE MONITOR…………………………………………………………………………………………… 79
WARNING DISPLAY……………………………………………………………………………………………………………. 87
ACTION LEVEL DISPLAY……………………………………………………………………………………………………….. 88
ENGINE COOLANT TEMPERATURE CAUTION LAMP………………………………………………………………………………………. 92
HYDRAULIC OIL TEMPERATURE CAUTION LAMP……………………………………………………………………………………….. 92
FUEL LEVEL CAUTION LAMP…………………………………………………………………………………………………….. 93
SYSTEM CAUTION LAMP………………………………………………………………………………………………………… 93
HYDRAULIC SYSTEM CAUTION LAMP……………………………………………………………………………………………….. 94
KDPF SYSTEM CAUTION LAMP……………………………………………………………………………………………………. 94
KDPF SOOT ACCUMULATION CAUTION LAMP………………………………………………………………………………………….. 95
NOx CONTROL SYSTEM CAUTION LAMP……………………………………………………………………………………………… 95
ENGINE SYSTEM CAUTION LAMP………………………………………………………………………………………………….. 96
ENGINE SUDDEN STOP BY AUTO IDLE STOP CAUTION LAMP……………………………………………………………………………… 96
ENGINE OIL PRESSURE CAUTION LAMP…………………………………………………………………………………………….. 97
ENGINE OIL LEVEL CAUTION LAMP……………………………………………………………………………………………….. 97
ENGINE OVERRUN CAUTION LAMP…………………………………………………………………………………………………. 98
RADIATOR COOLANT LEVEL CAUTION LAMP………………………………………………………………………………………….. 98
CHARGE LEVEL CAUTION LAMP…………………………………………………………………………………………………… 98
HYDRAULIC OIL FILTER CLOGGING CAUTION LAMP……………………………………………………………………………………. 99
AIR CLEANER CLOGGING CAUTION LAMP……………………………………………………………………………………………. 99
AIR CONDITIONER SYSTEM CAUTION LAMP………………………………………………………………………………………….. 99
MAINTENANCE TIME CAUTION LAMP………………………………………………………………………………………………..100
SEATBELT CAUTION LAMP……………………………………………………………………………………………………….100
CAMERA SYSTEM CAUTION LAMP…………………………………………………………………………………………………..101
CAMERA SYSTEM CAUTION LAMP…………………………………………………………………………………………………..101
PILOT DISPLAY AND METER DISPLAY………………………………………………………………………………………………102
MONITOR SWITCHES……………………………………………………………………………………………………………113
FUNCTION SWITCHES…………………………………………………………………………………………………………..124
USER MENU………………………………………………………………………………………………………………….129
SWITCHES………………………………………………………………………………………………………………………166
STARTING SWITCH…………………………………………………………………………………………………………….167
FUEL CONTROL DIAL…………………………………………………………………………………………………………..167
CIGARETTE LIGHTER…………………………………………………………………………………………………………..167
SWING LOCK SWITCH…………………………………………………………………………………………………………..168
LAMP SWITCH………………………………………………………………………………………………………………..168
HORN SWITCH………………………………………………………………………………………………………………..168
ROOM LAMP SWITCH……………………………………………………………………………………………………………169
PUMP SECONDARY DRIVE SWITCH………………………………………………………………………………………………….170
SWING PARKING BRAKE CANCEL SWITCH…………………………………………………………………………………………….171
LOCK LEVER AUTOMATIC LOCK CANCEL SWITCH……………………………………………………………………………………….172
REVOLVING LAMP SWITCH……………………………………………………………………………………………………….172
ENGINE SHUTDOWN SECONDARY SWITCH……………………………………………………………………………………………..173
LOWER WIPER SWITCH………………………………………………………………………………………………………….174
SEAT HEATER SWITCH………………………………………………………………………………………………………….174
MACHINE PUSH-UP SWITCH………………………………………………………………………………………………………175
STAIRCASE LIGHTING SWITCH……………………………………………………………………………………………………175
BOOM SHOCK ABSORBING CONTROL SWITCH…………………………………………………………………………………………..175
WALK-THROUGH LIGHT SWITCH……………………………………………………………………………………………………176
CONTROL LEVERS AND PEDALS……………………………………………………………………………………………………….177
LOCK LEVER…………………………………………………………………………………………………………………177
TRAVEL LEVER……………………………………………………………………………………………………………….179
WORK EQUIPMENT CONTROL LEVER…………………………………………………………………………………………………180
OTHER EQUIPMENT………………………………………………………………………………………………………………..181
METHOD FOR OPENING AND CLOSING CAB FRONT WINDOW………………………………………………………………………………..181
EMERGENCY ESCAPE HAMMER……………………………………………………………………………………………………..186
METHOD FOR USING DOOR LOCK…………………………………………………………………………………………………..187
CAB DOOR HINGE……………………………………………………………………………………………………………..187
CAP AND COVER WITH LOCK……………………………………………………………………………………………………..188
DRINK BOX………………………………………………………………………………………………………………….188
MAGAZINE BOX……………………………………………………………………………………………………………….188
CUP HOLDER…………………………………………………………………………………………………………………188
ASHTRAY……………………………………………………………………………………………………………………189
POWER SUPPLY OUTLET…………………………………………………………………………………………………………189
FUSE………………………………………………………………………………………………………………………190
CIRCUIT BREAKER…………………………………………………………………………………………………………….192
TOOL BOX…………………………………………………………………………………………………………………..193
FIRE EXTINGUISHER…………………………………………………………………………………………………………..193
BATTERY DISCONNECT SWITCH……………………………………………………………………………………………………194
SYSTEM OPERATING LAMP……………………………………………………………………………………………………….195
GREASE PUMP………………………………………………………………………………………………………………..195
HANDLE Komatsu Diesel Particulate Filter (KDPF)………………………………………………………………………………..198
Komatsu Closed Crankcase Ventilation (KCCV)……………………………………………………………………………………209
NOx CONTROL SYSTEM FUNCTION………………………………………………………………………………………………….209
KOMTRAX Plus……………………………………………………………………………………………………………….215
MACHINE OPERATIONS AND CONTROLS……………………………………………………………………………………………………..216
CHECKS AND ADJUSTMENT BEFORE STARTING ENGINE………………………………………………………………………………………216
METHOD FOR WALK-AROUND CHECK…………………………………………………………………………………………………216
METHOD FOR CHECKING BEFORE STARTING…………………………………………………………………………………………..218
METHOD FOR ADJUSTING………………………………………………………………………………………………………..231
METHOD FOR OPERATIONS AND CHECKS BEFORE STARTING ENGINE…………………………………………………………………………248
METHOD FOR STARTING ENGINE………………………………………………………………………………………………………251
METHOD FOR MANUAL PREHEATING WHEN STARTING ENGINE………………………………………………………………………………253
TURBOCHARGER PROTECTION FUNCTION……………………………………………………………………………………………..253
METHOD FOR OPERATIONS AND CHECKS AFTER STARTING ENGINE……………………………………………………………………………..254
METHOD FOR CHECKING STARTING CONDITION AND UNUSUAL NOISE OF ENGINE……………………………………………………………….254
METHOD FOR CHECKING LOW-SPEED RUN AND ACCELERATION OF ENGINE…………………………………………………………………….255
METHOD FOR RUNNING-IN THE NEW MACHINE…………………………………………………………………………………………255
METHOD FOR ENGINE WARM-UP OPERATION…………………………………………………………………………………………..256
METHOD FOR HYDRAULIC SYSTEM WARM-UP OPERATION………………………………………………………………………………….259
METHOD FOR OPERATION AFTER COMPLETION OF WARM-UP OPERATION………………………………………………………………………264
METHOD FOR STOPPING ENGINE………………………………………………………………………………………………………266
STOP ENGINE IN EMERGENCY…………………………………………………………………………………………………….268
METHOD FOR STARTING MACHINE (TRAVEL FORWARD AND REVERSE) AND STOPPING MACHINE…………………………………………………………272
PREPARATIONS FOR MOVING MACHINE………………………………………………………………………………………………272
METHOD FOR TRAVELING FORWARD…………………………………………………………………………………………………273
METHOD FOR TRAVELING REVERSE…………………………………………………………………………………………………274
METHOD FOR STOPPING MACHINE………………………………………………………………………………………………….275
METHOD FOR STEERING MACHINE……………………………………………………………………………………………………..276
METHOD FOR STEERING (CHANGE THE DIRECTION) MACHINE……………………………………………………………………………..276
METHOD FOR SWINGING MACHINE……………………………………………………………………………………………………..278
METHOD FOR OPERATING WORK EQUIPMENT………………………………………………………………………………………………279
HANDLE WORKING MODE…………………………………………………………………………………………………………….280
METHOD FOR SELECTING WORKING MODE…………………………………………………………………………………………….280
ECONOMY MODE SELECTION………………………………………………………………………………………………………281
PROHIBITED OPERATIONS…………………………………………………………………………………………………………..282
PROHIBITION OF OPERATIONS USING SWING FORCE……………………………………………………………………………………282
PROHIBITION OF OPERATIONS USING TRAVEL FORCE…………………………………………………………………………………..282
PROHIBITION OF OPERATIONS USING HYDRAULIC CYLINDERS TO STROKE END………………………………………………………………..282
DO NOT PERFORM THE WORK IF FOREIGN MATERIAL IS ACCUMULATED AROUND HYDRAULIC CYLINDER……………………………………………….283
PROHIBITION OF OPERATIONS USING BUCKET DROPPING FORCE…………………………………………………………………………..283
PROHIBITION OF OPERATIONS USING BUCKET AS LEVER………………………………………………………………………………..283
PROHIBITION OF OPERATIONS USING MACHINE DROPPING FORCE………………………………………………………………………….284
PROHIBITION OF DIGGING OPERATION AT AN ANGLE WITHOUT ENGAGING TEETH………………………………………………………………284
PROHIBITION OF DIGGING OPERATION ON HARD ROCKY GROUND…………………………………………………………………………..284
PROHIBITION OF OPERATIONS WHEN MACHINE IS NOT STABLE……………………………………………………………………………285
PROHIBITION OF SWINGING OR TRAVELING WHEN ROCK IS ON TOP OF TRACK ASSEMBLY………………………………………………………..285
PROHIBITION OF SUDDEN LEVER OR PEDAL SHIFT DURING HIGH SPEED TRAVEL………………………………………………………………285
PROHIBITION OF HIGH-SPEED TRAVEL OPERATIONS ON ROUGH GROUND……………………………………………………………………..286
DO NOT TRAVEL LONG -TIME CONTINUOUSLY…………………………………………………………………………………………286
PRECAUTIONS FOR OPERATION……………………………………………………………………………………………………….287
PRECAUTIONS FOR TRAVELLING…………………………………………………………………………………………………..287
PRECAUTIONS FOR HIGH SPEED TRAVEL…………………………………………………………………………………………….287
PRECAUTIONS WHEN PERFORMING OPERATIONS CONTINUOUSLY WITH THE WORK EQUIPMENT IN THE SAME POSTURE……………………………………..287
PERMISSIBLE DEPTH OF WATER, SOIL AND DIRT……………………………………………………………………………………..288
PRECAUTIONS FOR WORKING ON SLOPE…………………………………………………………………………………………………289
METHOD FOR ESCAPING FROM MUD…………………………………………………………………………………………………….291
RECOMMENDED APPLICATIONS………………………………………………………………………………………………………..292
DIGGING WORK……………………………………………………………………………………………………………….292
DITCHING WORK………………………………………………………………………………………………………………292
LOADING WORK……………………………………………………………………………………………………………….292
EFFECTIVE USE OF HYDRAULIC EXCAVATOR……………………………………………………………………………………………..293
METHOD FOR CHANGING BUCKET………………………………………………………………………………………………………293
METHOD FOR PARKING MACHINE………………………………………………………………………………………………………295
METHOD FOR CHECKING AFTER FINISHING WORK………………………………………………………………………………………….296
LOCK………………………………………………………………………………………………………………………….297
METHOD FOR OPENING AND CLOSING CAP WITH LOCK…………………………………………………………………………………..298
METHOD FOR OPENING AND CLOSING COVER WITH LOCK…………………………………………………………………………………298
METHOD FOR OPENING AND CLOSING CAB DOOR……………………………………………………………………………………….299
HANDLE AIR CONDITIONER……………………………………………………………………………………………………………..300
EXPLANATION OF AIR CONDITIONER EQUIPMENT………………………………………………………………………………………….301
OFF SWITCH…………………………………………………………………………………………………………………301
FAN SWITCH…………………………………………………………………………………………………………………301
TEMPERATURE SET SWITCH………………………………………………………………………………………………………302
VENT SELECTOR SWITCH………………………………………………………………………………………………………..303
AUTO SWITCH………………………………………………………………………………………………………………..304
FRESH/RECIRC AIR SELECTOR SWITCH……………………………………………………………………………………………..304
DISPLAY MONITOR…………………………………………………………………………………………………………….304
AIR CONDITIONER SWITCH………………………………………………………………………………………………………305
SUNLIGHT SENSOR…………………………………………………………………………………………………………….305
METHOD FOR OPERATING AIR CONDITIONER……………………………………………………………………………………………..306
METHOD FOR AUTOMATIC OPERATION……………………………………………………………………………………………….306
METHOD FOR STOPPING AUTOMATIC OPERATION……………………………………………………………………………………….307
METHOD FOR MANUAL OPERATION………………………………………………………………………………………………….308
METHOD FOR STOPPING MANUAL OPERATION………………………………………………………………………………………….309
METHOD FOR OPERATING WITH COLD AIR TO FACE AND WARM AIR TO FEET………………………………………………………………….310
METHOD FOR OPERATING DEFROSTER……………………………………………………………………………………………….312
HANDLING RADIO…………………………………………………………………………………………………………………….314
EXPLANATION OF RADIO EQUIPMENT…………………………………………………………………………………………………..314
POWER BUTTON……………………………………………………………………………………………………………….314
BAND/AUX SELECTOR BUTTON…………………………………………………………………………………………………….314
VOLUME CONTROL BUTTON……………………………………………………………………………………………………….314
TUNING/TIME ADJUSTMENT BUTTON………………………………………………………………………………………………..314
PRESET BUTTON………………………………………………………………………………………………………………315
DISPLAY SELECTOR BUTTON……………………………………………………………………………………………………..315
SOUND CONTROL BUTTON………………………………………………………………………………………………………..315
DISPLAY……………………………………………………………………………………………………………………315
AUX……………………………………………………………………………………………………………………….316
METHOD FOR CONTROLLING RADIO…………………………………………………………………………………………………….317
METHOD FOR ADJUSTING FREQUENCY……………………………………………………………………………………………….317
METHOD FOR ADJUSTING FREQUENCY (AUTO PRESETTING)……………………………………………………………………………….317
METHOD FOR CALLING PRESET……………………………………………………………………………………………………317
METHOD FOR REGISTERING PRESET………………………………………………………………………………………………..318
METHOD FOR ADJUSTING SOUND BALANCE……………………………………………………………………………………………318
METHOD FOR ADJUSTING HIGH REGISTER RANGE (TREBLE)………………………………………………………………………………318
METHOD FOR ADJUSTING LOW REGISTER RANGE (BASS)…………………………………………………………………………………318
METHOD FOR ADJUSTING CLOCK…………………………………………………………………………………………………..319
STOW ANTENNA…………………………………………………………………………………………………………………..319
KomVision…………………………………………………………………………………………………………………………320
PRECAUTIONS WHEN USING KomVision…………………………………………………………………………………………………320
MONITOR DISPLAY………………………………………………………………………………………………………………..320
TRANSPORTATION…………………………………………………………………………………………………………………….322
PRECAUTIONS FOR TRANSPORTING MACHINE……………………………………………………………………………………………..322
SELECT TRANSPORTATION METHOD…………………………………………………………………………………………………….322
METHOD FOR LIFTING MACHINE………………………………………………………………………………………………………323
PRECAUTIONS FOR LOADING MACHINE………………………………………………………………………………………………….324
MACHINE CONFIGURATION FOR TRANSPORTATION………………………………………………………………………………………….325
COLD WEATHER OPERATION……………………………………………………………………………………………………………..334
COLD WEATHER OPERATION INFORMATION……………………………………………………………………………………………….334
FUEL AND LUBRICANTS…………………………………………………………………………………………………………334
COOLANT……………………………………………………………………………………………………………………334
BATTERY……………………………………………………………………………………………………………………335
PRECAUTIONS AFTER DAILY WORK COMPLETION IN COLD WEATHER…………………………………………………………………………….336
AFTER COLD WEATHER SEASON……………………………………………………………………………………………………….336
PRECAUTIONS FOR LONG-TERM STORAGE……………………………………………………………………………………………………337
PREPARATION FOR LONG-TERM STORAGE………………………………………………………………………………………………..337
MAINTENANCE DURING LONG-TERM STORAGE……………………………………………………………………………………………..337
STARTING MACHINE AFTER LONG-TERM STORAGE………………………………………………………………………………………….338
TROUBLES AND ACTIONS……………………………………………………………………………………………………………….339
ACTIONS WHEN RUNNING OUT OF FUEL…………………………………………………………………………………………………339
PROCEDURES FOR BLEEDING AIR FROM FUEL CIRCUIT………………………………………………………………………………….339
PHENOMENA THAT ARE NOT FAILURES………………………………………………………………………………………………….340
PRECAUTIONS FOR TOWING MACHINE…………………………………………………………………………………………………..341
PRECAUTIONS FOR SEVERE JOB CONDITION……………………………………………………………………………………………..341
PRECAUTIONS FOR DISCHARGED BATTERY……………………………………………………………………………………………….342
METHOD FOR REMOVING AND INSTALLING BATTERY…………………………………………………………………………………….343
PRECAUTIONS FOR CHARGING BATTERY……………………………………………………………………………………………..344
START ENGINE WITH JUMPER CABLES………………………………………………………………………………………………345
OTHER TROUBLE………………………………………………………………………………………………………………….347
PHENOMENA AND ACTIONS FOR ELECTRICAL SYSTEM……………………………………………………………………………………347
PHENOMENA AND ACTIONS FOR CHASSIS…………………………………………………………………………………………….348
PHENOMENA AND ACTIONS FOR ENGINE RELATED PARTS…………………………………………………………………………………349
IF MACHINE MONITOR SHOWS WARNING DISPLAY………………………………………………………………………………………351
MAINTENANCE…………………………………………………………………………………………………………………………..353
PRECAUTIONS FOR MAINTENANCE…………………………………………………………………………………………………………354
CHECK SERVICE METER READING……………………………………………………………………………………………………..354
KOMATSU GENUINE REPLACEMENT PARTS………………………………………………………………………………………………..354
KOMATSU GENUINE LUBRICANTS………………………………………………………………………………………………………354
ALWAYS USE CLEAN WASHER FLUID……………………………………………………………………………………………………354
FRESH AND CLEAN LUBRICANTS………………………………………………………………………………………………………354
CHECK DRAINED OIL AND USED FILTER………………………………………………………………………………………………..354
PRECAUTIONS FOR REFILLING OIL OR FUEL…………………………………………………………………………………………….354
WELDING INSTRUCTIONS……………………………………………………………………………………………………………354
DO NOT DROP THINGS INSIDE MACHINE………………………………………………………………………………………………..354
PRECAUTIONS FOR KDPF……………………………………………………………………………………………………………354
DUSTY JOBSITES…………………………………………………………………………………………………………………355
AVOID MIXING OIL……………………………………………………………………………………………………………….355
LOCK INSPECTION COVERS………………………………………………………………………………………………………….355
BLEED AIR FROM HYDRAULIC CIRCUIT…………………………………………………………………………………………………355
PRECAUTIONS WHEN INSTALLING HYDRAULIC HOSES……………………………………………………………………………………….355
CHECKS AFTER INSPECTION AND MAINTENANCE…………………………………………………………………………………………..355
FUEL AND LUBRICANTS TO MATCH THE AMBIENT TEMPERATURE……………………………………………………………………………….355
OUTLINE OF MAINTENANCE……………………………………………………………………………………………………………..356
HANDLE OIL, FUEL, COOLANT, AND PERFORMING OIL CLINIC……………………………………………………………………………….356
OIL……………………………………………………………………………………………………………………….356
FUEL………………………………………………………………………………………………………………………357
PARAFFIN-BASED FUEL…………………………………………………………………………………………………………357
COOLANT AND WATER FOR DILUTION……………………………………………………………………………………………….358
GREASE…………………………………………………………………………………………………………………….358
PERFORM KOWA (Komatsu Oil Wear Analysis)………………………………………………………………………………………359
STORE OIL AND FUEL………………………………………………………………………………………………………….360
FILTER…………………………………………………………………………………………………………………….360
HANDLE ELECTRICAL COMPONENTS…………………………………………………………………………………………………….360
STANDARD TIGHTENING TORQUE FOR BOLTS AND NUTS…………………………………………………………………………………………361
MAINTENANCE SCHEDULE……………………………………………………………………………………………………………….363
MAINTENANCE SCHEDULE TABLE………………………………………………………………………………………………………363
MAINTENANCE INTERVAL WHEN DIESEL FUEL MIXED WITH BIO-FUEL IS USED……………………………………………………………………365
MAINTENANCE PROCEDURE………………………………………………………………………………………………………………366
INITIAL 100 HOURS MAINTENANCE (ONLY AFTER THE FIRST 100 HOURS)………………………………………………………………………366
INITIAL 500 HOURS MAINTENANCE (ONLY AFTER THE FIRST 500 HOURS)………………………………………………………………………366
WHEN REQUIRED………………………………………………………………………………………………………………….367
METHOD FOR CHECKING, CLEANING AND REPLACING AIR CLEANER…………………………………………………………………………367
METHOD FOR CLEANING INSIDE OF COOLING SYSTEM…………………………………………………………………………………..373
METHOD FOR CHECKING LOOSENESS AND TIGHTENING TRACK SHOE BOLTS……………………………………………………………………376
METHOD FOR CHECKING AND ADJUSTING TRACK TENSION………………………………………………………………………………..376
METHOD FOR REPLACING BUCKET TEETH (XS)………………………………………………………………………………………..379
METHOD FOR REMOVING SLING……………………………………………………………………………………………………381
METHOD FOR ADJUSTING BUCKET CLEARANCE…………………………………………………………………………………………383
METHOD FOR CHECKING WINDOW WASHER FLUID LEVEL, ADDING FLUID……………………………………………………………………..384
METHOD FOR CHECKING AND MAINTENANCE AIR CONDITIONER…………………………………………………………………………….385
METHOD FOR WASHING WASHABLE FLOOR…………………………………………………………………………………………….387
METHOD FOR CHECKING GAS SPRING……………………………………………………………………………………………….391
METHOD FOR BLEEDING AIR FROM HYDRAULIC CIRCUIT…………………………………………………………………………………392
METHOD FOR BLEEDING AIR FROM FUEL CIRCUIT……………………………………………………………………………………..395
METHOD FOR CLEANING LINE FILTER AND REMOVING DIRT………………………………………………………………………………396
METHOD FOR CHECKING CAMERA VISIBILITY…………………………………………………………………………………………397
CHECKS BEFORE STARTING………………………………………………………………………………………………………….398
EVERY 10 HOURS MAINTENANCE………………………………………………………………………………………………………399
METHOD FOR LUBRICATING………………………………………………………………………………………………………399
EVERY 100 HOURS MAINTENANCE……………………………………………………………………………………………………..401
METHOD FOR LUBRICATING SWING CIRCLEZ………………………………………………………………………………………….401
EVERY 250 HOURS MAINTENANCE……………………………………………………………………………………………………..402
METHOD FOR CHECKING OIL LEVEL IN FINAL DRIVE CASE, ADDING OIL……………………………………………………………………402
METHOD FOR CHECKING BATTERY ELECTROLYTE LEVEL………………………………………………………………………………….403
METHOD FOR CHECKING LOOSENESS AND TIGHTENING TRACK FRAME AND AXLE CONNECTING BOLTS…………………………………………………404
EVERY 500 HOURS MAINTENANCE……………………………………………………………………………………………………..405
METHOD FOR CHANGING OIL IN ENGINE OIL PAN, REPLACING ENGINE OIL FILTER CARTRIDGE…………………………………………………..405
METHOD FOR REPLACING FUEL PREFILTER CARTRIDGE………………………………………………………………………………….407
METHOD FOR CHECKING SWING PINION GREASE LEVEL, ADD GREASE……………………………………………………………………….409
METHOD FOR CHECKING AND CLEANING RADIATOR FINS, OIL COOLER FINS, AFTERCOOLER FINS, FUEL COOLER FINS, AND AIR CONDITIONER CONDENSER FINS….410
METHOD FOR CHECKING AND REPLACING ALTERNATOR AND AIR CONDITIONER COMPRESSOR DRIVE BELT……………………………………………..412
METHOD FOR CLEANING AIR CONDITIONER FRESH/RECIRC FILTERS………………………………………………………………………..413
METHOD FOR CLEANING PTO LUBRICATION FILTER STRAINER…………………………………………………………………………….415
METHOD FOR REPLACING PILOT FILTER ELEMENT……………………………………………………………………………………..416
METHOD FOR REPLACING DRAIN FILTER CARTRIDGE……………………………………………………………………………………416
EVERY 1000 HOURS MAINTENANCE…………………………………………………………………………………………………….417
METHOD FOR REPLACING HYDRAULIC OIL FILTER ELEMENT………………………………………………………………………………417
METHOD FOR CHANGE OIL IN SWING MACHINERY CASE………………………………………………………………………………….418
METHOD FOR CHANGING OIL IN PTO CASE…………………………………………………………………………………………..420
METHOD FOR REPLACING FUEL MAIN FILTER CARTRIDGE………………………………………………………………………………..421
METHOD FOR REPLACING FUEL TANK BREATHER ELEMENT………………………………………………………………………………..423
METHOD FOR CHECKING AND LUBRICATING TENSION PULLEY ASSEMBLY OF ALTERNATOR AND AIR CONDITIONER COMPRESSOR DRIVE BELT……………………423
METHOD FOR CHECKING ALL TIGHTENING POINTS OF ENGINE INTAKE PIPE CLAMPS……………………………………………………………423
METHOD FOR CHECKING WELDED STRUCTURE………………………………………………………………………………………….423
METHOD FOR REPLACING HYDRAULIC TANK BREATHER ELEMENT……………………………………………………………………………427
METHOD FOR REPLACING SWING MOTOR COOLING FILTER ELEMENT…………………………………………………………………………428
EVERY 2000 HOURS MAINTENANCE…………………………………………………………………………………………………….431
METHOD FOR CHANGING OIL IN FINAL DRIVE CASE……………………………………………………………………………………431
METHOD FOR CLEANING HYDRAULIC TANK STRAINER……………………………………………………………………………………432
METHOD FOR CHECKING AND RELEASING NITROGEN GAS CHARGE PRESSURE IN ACCUMULATOR (FOR CONTROL CIRCUIT)………………………………….433
METHOD OF CHECKING BOOST PIPING HOSE CLAMP…………………………………………………………………………………….436
METHOD FOR CHECKING ALTERNATOR……………………………………………………………………………………………….436
METHOD FOR CHECKING AND ADJUSTING ENGINE VALVE CLEARANCE………………………………………………………………………..436
METHOD FOR REPLACING KCCV FILTER ELEMENT………………………………………………………………………………………437
EVERY 4000 HOURS MAINTENANCE…………………………………………………………………………………………………….440
REPLACE DEFINED LIFE PARTS…………………………………………………………………………………………………..440
METHOD FOR CHECKING WATER PUMP……………………………………………………………………………………………….440
METHOD FOR CHECKING STARTING MOTOR……………………………………………………………………………………………440
METHOD FOR REPLACING ACCUMULATOR (FOR CONTROL CIRCUIT)………………………………………………………………………….441
METHOD FOR CHECKING AND ADJUSTING AIR COMPRESSOR……………………………………………………………………………….441
METHOD FOR CHECKING FOR LOOSENESS OF ENGINE HIGH-PRESSURE PIPING CLAMP, HARDENING OF RUBBER…………………………………………442
METHOD FOR CHECKING FOR MISSING FUEL SPRAY PREVENTION CAP, HARDENING OF RUBBER…………………………………………………….443
METHOD FOR REPLACING RADIATOR CAP…………………………………………………………………………………………….444
EVERY 4500 HOURS MAINTENANCE…………………………………………………………………………………………………….445
METHOD FOR CLEANING KDPF…………………………………………………………………………………………………….445
METHOD FOR CLEANING FUEL DOSER……………………………………………………………………………………………….445
CHECK FOR MISSING FUEL SPRAY PREVENTION CAP ON FUEL DOSER PIPING, HARDENING OF RUBBER………………………………………………445
EVERY 5000 HOURS MAINTENANCE…………………………………………………………………………………………………….446
METHOD FOR CHANGING OIL IN HYDRAULIC TANK, CLEANING HYDRAULIC TANK STRAINER……………………………………………………….446
METHOD FOR CHECKING LOOSENESS AND TIGHTENING SWING CIRCLE BOLTS………………………………………………………………….448
EVERY 8000 HOURS MAINTENANCE…………………………………………………………………………………………………….450
METHOD FOR REPLACING ENGINE HIGH-PRESSURE PIPING CLAMP………………………………………………………………………….450
METHOD FOR REPLACING FUEL SPRAY PREVENTION CAP…………………………………………………………………………………450
METHOD FOR OVERHAULING STARTING MOTOR AND ALTERNATOR……………………………………………………………………………450
EVERY 9000 HOURS MAINTENANCE…………………………………………………………………………………………………….451
METHOD FOR REPLACING FUEL SPRAY PREVENTION CAP ON FUEL DOSER PIPING………………………………………………………………451
SPECIFICATIONS………………………………………………………………………………………………………………………..453
SPECIFICATIONS…………………………………………………………………………………………………………………….454
SPECIFICATIONS: PC1250-11E0……………………………………………………………………………………………………..454
SPECIFICATIONS: PC1250SP-11E0……………………………………………………………………………………………………457
ATTACHMENTS AND OPTIONS………………………………………………………………………………………………………………..461
PRECAUTIONS FOR USING ATTACHMENT AND OPTIONS………………………………………………………………………………………….462
PRECAUTIONS WHEN SELECTING………………………………………………………………………………………………………462
READ THE OPERATION AND MAINTENANCE MANUAL THOROUGHLY……………………………………………………………………………….462
PRECAUTIONS WHEN REMOVING AND INSTALLING………………………………………………………………………………………….462
PRECAUTIONS FOR USING…………………………………………………………………………………………………………..462
ATTACHMENTS AND OPTIONS…………………………………………………………………………………………………………….464
INSTALL ATTACHMENT……………………………………………………………………………………………………………..464
TRACK SHOES SELECTION…………………………………………………………………………………………………………..467
HANDLE AUTO-GREASING SYSTEM…………………………………………………………………………………………………………468
EXPLANATION OF COMPONENTS IN AUTO-GREASING SYSTEM………………………………………………………………………………….468
GREASING MODE SELECTOR SWITCH………………………………………………………………………………………………..469
AUTO-GREASING CAUTION LAMP…………………………………………………………………………………………………..469
AUTO-GREASING OPERATION PILOT LAMP……………………………………………………………………………………………470
MANUAL-GREASING OPERATION PILOT LAMP………………………………………………………………………………………….470
AUTO-GREASING AND GREASE GUN SELECTOR VALVE LEVER………………………………………………………………………………471
GREASE PUMP………………………………………………………………………………………………………………..471
REGULATOR………………………………………………………………………………………………………………….471
INJECTOR…………………………………………………………………………………………………………………..471
GREASING POINTS FOR AUTO-GREASING SYSTEM………………………………………………………………………………………….472
MACHINE OPERATIONS AND CONTROLS………………………………………………………………………………………………….473
METHOD FOR CHECKING BEFORE STARTING OPERATION………………………………………………………………………………….473
METHOD FOR OPERATING GREASING MODE SELECTOR SWITCH……………………………………………………………………………..473
SET AUTO-GREASING INTERVAL…………………………………………………………………………………………………..475
METHOD FOR ADJUSTING INJECTOR DISCHARGED VOLUME………………………………………………………………………………..476
TROUBLES AND ACTIONS……………………………………………………………………………………………………………478
AUTO-GREASING CAUTION LAMP…………………………………………………………………………………………………..478
INJECTOR ACTION INDICATOR……………………………………………………………………………………………………479
CHECK AND MAINTENANCE…………………………………………………………………………………………………………..480
METHOD FOR REPLACING GREASE PAIL……………………………………………………………………………………………..480
METHOD FOR BLEEDING AIR FROM GREASE LINE………………………………………………………………………………………481
INJECTOR POSITION IN AUTO-GREASING SYSTEM AND METHOD FOR GREASING………………………………………………………………..483
EVERY 10 HOURS MAINTENANCE…………………………………………………………………………………………………..486
HANDLE THE HYDRAULICALLY OPERATED STAIRWAY……………………………………………………………………………………………487
PROCEDURE FOR OPERATING THE HYDRAULICALLY OPERATED STAIRWAY…………………………………………………………………………487
PROCEDURE FOR LOWERING STAIRWAY BY OPERATING FROM MACHINE……………………………………………………………………….488
PROCEDURE FOR STORING STAIRWAY BY OPERATING FROM MACHINE………………………………………………………………………..488
ACTIONS IF MACHINE DOES NOT MOVE BY PROXIMITY SWITCH FAILURE ETC…………………………………………………………………….489
METHOD FOR CHECKING AND ADJUSTING PROXIMITY SWITCH…………………………………………………………………………………489
ACTIONS IF PROXIMITY SWITCH HAS FAILED……………………………………………………………………………………………491
STAIRWAY CAUTION LAMP……………………………………………………………………………………………………….491
HANDLE EXTERNAL POWER SUPPLY ENGINE PREHEATER…………………………………………………………………………………………492
INSTALLATION PROCEDURES FOR EXTERNAL POWER SUPPLY SYSTEM FOR EXTERNAL POWER SUPPLY ENGINE PREHEATER……………………………………..492
FABRICATE EXTERNAL POWER SUPPLY CABLE…………………………………………………………………………………………….493
INSTALL EXTERNAL POWER SUPPLY SYSTEM……………………………………………………………………………………………..495
PROCEDURE FOR HANDLING EXTERNAL POWER SUPPLY ENGINE PREHEATER……………………………………………………………………….498
METHOD FOR OPERATING EXTERNAL POWER SUPPLY HEATER………………………………………………………………………………….498
WHEN YOU USE THE EXTERNAL POWER SUPPLY ENGINE PREHEATER…………………………………………………………………………….500
NO USE OF PREHEATING HEATER……………………………………………………………………………………………………..500
HANDLE MOVABLE DIESEL PREHEATER……………………………………………………………………………………………………..503
GENERAL VIEW…………………………………………………………………………………………………………………..506
EXPLANATION OF MOVABLE DIESEL PREHEATER EQUIPMENT………………………………………………………………………………….507
METHOD FOR STARTING OPERATION……………………………………………………………………………………………………511
STOP MACHINE…………………………………………………………………………………………………………………..514
IF FUEL IS NOT SUPPLIED NORMALLY…………………………………………………………………………………………………515
CAUSE OF TROUBLE AND ACTIONS…………………………………………………………………………………………………….516
MACHINE WITH LOADING SHOVEL SPECIFICATION………………………………………………………………………………………………..519
EXPLANATION OF COMPONENTS…………………………………………………………………………………………………………..520
SWITCHES………………………………………………………………………………………………………………………520
FUSE………………………………………………………………………………………………………………………….523
MACHINE OPERATIONS AND CONTROLS……………………………………………………………………………………………………..524
METHOD FOR OPERATING WORK EQUIPMENT………………………………………………………………………………………………524
PRECAUTIONS DURING OPERATION…………………………………………………………………………………………………….526
PROHIBITION OF OPERATIONS USING SWING FORCE……………………………………………………………………………………526
PROHIBITION OF OPERATIONS USING TRAVEL FORCE…………………………………………………………………………………..526
PROHIBITION OF OPERATIONS USING HYDRAULIC CYLINDERS TO STROKE END………………………………………………………………..527
DO NOT PERFORM THE WORK IF FOREIGN MATERIAL IS ACCUMULATED AROUND HYDRAULIC CYLINDER……………………………………………….527
PROHIBITION OF OPERATIONS USING BUCKET DROPPING FORCE…………………………………………………………………………..527
PRECAUTIONS TO STABILIZE MACHINE WHEN MACHINE SWINGS……………………………………………………………………………527
DO NOT DO DIGGING BY TILT OPERATION…………………………………………………………………………………………..528
DO NOT DO GRASP OPERATION……………………………………………………………………………………………………528
DO NOT DO LEVELING WITH BUCKET……………………………………………………………………………………………….528
PRECAUTIONS NOT TO SPILL LOAD………………………………………………………………………………………………..528
PRECAUTIONS NOT TO HIT UNDERCARRIAGE………………………………………………………………………………………….529
DO NOT DO SCRAPE-DOWN OPERATION………………………………………………………………………………………………529
DIG ROCK-BED……………………………………………………………………………………………………………….529
PHENOMENA THAT ARE NOT FAILURES………………………………………………………………………………………………529
PRECAUTIONS FOR OPERATION……………………………………………………………………………………………………531
PRECAUTIONS WHEN TRAVELING…………………………………………………………………………………………………..531
PRECAUTIONS WHEN TRAVELING ON SLOPES………………………………………………………………………………………….531
PRECAUTIONS WHEN PARKING MACHINE……………………………………………………………………………………………..532
RECOMMENDED APPLICATIONS……………………………………………………………………………………………………………533
DIGGING WORK…………………………………………………………………………………………………………………..533
LOADING WORK…………………………………………………………………………………………………………………..533
PRECAUTIONS WHEN YOU DISASSEMBLE MACHINE……………………………………………………………………………………………..534
RELEASE PRESSURE……………………………………………………………………………………………………………….534
RELEASE PRESSURE IN WORK EQUIPMENT CIRCUIT, SWING CIRCUIT, AND TRAVEL CIRCUIT……………………………………………………..534
RELEASE PRESSURE IN ACCUMULATOR CIRCUIT……………………………………………………………………………………….535
TRANSPORTATION…………………………………………………………………………………………………………………….535
MACHINE CONFIGURATION FOR TRANSPORTATION………………………………………………………………………………………….535
CONSUMABLE PARTS…………………………………………………………………………………………………………………..544
CONSUMABLE PARTS……………………………………………………………………………………………………………….544
PERIODIC MAINTENANCE……………………………………………………………………………………………………………….545
CHECKS BEFORE STARTING………………………………………………………………………………………………………….545
METHOD FOR CHECKING OIL LEVEL IN HYDRAULIC TANK, ADDING OIL…………………………………………………………………………545
EVERY 10 HOURS MAINTENANCE………………………………………………………………………………………………………….547
LUBRICATION……………………………………………………………………………………………………………………547
EVERY 5000 HOURS MAINTENANCE………………………………………………………………………………………………………..549
METHOD FOR CHANGING OIL IN HYDRAULIC TANK, CLEANING HYDRAULIC TANK STRAINER…………………………………………………………..549
SPECIFICATIONS: PC1250-11…………………………………………………………………………………………………………..551
COMBINATION OF WORK EQUIPMENT……………………………………………………………………………………………………….552
WORKING RANGE DRAWINGS: PC1250-11………………………………………………………………………………………………..553
REPLACEMENT PARTS……………………………………………………………………………………………………………………..555
PERIODIC REPLACEMENT OF DEFINED LIFE PARTS……………………………………………………………………………………………556
DEFINED LIFE PARTS LIST…………………………………………………………………………………………………………556
CONSUMABLE PARTS…………………………………………………………………………………………………………………..557
CONSUMABLE PARTS……………………………………………………………………………………………………………….557
RECOMMENDED FUEL, COOLANT, AND LUBRICANT……………………………………………………………………………………………..559
LUBRICATION CHART………………………………………………………………………………………………………………560
USE OF FUEL, COOLANT AND LUBRICANTS TO ACCORDING TO AMBIENT TEMPERATURE………………………………………………………………561
RECOMMENDED BRANDS AND QUALITIES OTHER THAN KOMATSU GENUINE OILS…………………………………………………………………….562
INDEX…………………………………………………………………………………………………………………………………563