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Komatsu PC290LC-7K PC290NLC-7K HYDRAULIC EXCAVATOR Operation & Maintenance Manual – PDF Download
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- Komatsu PC290LC-7K PC290NLC-7K HYDRAULIC EXCAVATOR Operation & Maintenance Manual
- SERIAL NUMBER:
PC290LC-7K – K40001 and up
PC290NLC-7K – K40001 and up - PUBLICATION NUMBER:UEAM001603
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Description
Komatsu PC290LC-7K PC290NLC-7K HYDRAULIC EXCAVATOR Operation & Maintenance Manual
Description:
Komatsu PC290LC-7K PC290NLC-7K HYDRAULIC EXCAVATOR Operation & Maintenance Manual
This manual provides rules and guidelines which will help you use this machine safely and effectively. The precautions in this manual must be followed at all times while operating or performing maintenance . Most accidents are caused by the failure to follow fundamental safety rules for the operation and maintenance of machines. Accidents can be prevented by knowing beforehand conditions that may cause a hazard when performing operation and maintenance.
Table of Contents:
Komatsu PC290LC-7K PC290NLC-7K HYDRAULIC EXCAVATOR Operation & Maintenance Manual
FOREWORD.................................................................................. 3 FOREWORD.............................................................................. 4 SAFETY INFORMATION.................................................................... 5 NOISE............................................................................. 7 VIBRATION......................................................................... 7 INTRODUCTION.......................................................................... 8 DIRECTIONS OF MACHINE............................................................. 8 PRODUCT INFORMATION................................................................... 9 MACHINE SERIAL NUMBER PLATE AND ITS LOCATION...................................... 9 ENGINE SERIAL NUMBER PLATE AND ITS LOCATION....................................... 9 SERVICE METER LOCATION............................................................ 10 TABLE TO ENTER SERIAL NO. AND DISTRIBUTOR......................................... 10 SAFETY.................................................................................... 17 SAFETY INFORMATION.................................................................... 18 POSITION FOR ATTACHING SAFETY LABELS.................................................. 20 POSITION FOR ATTACHING SAFETY LABELS.............................................. 20 SAFETY LABELS..................................................................... 21 SAFETY INFORMATION.................................................................... 28 SAFETY RULES...................................................................... 28 IF ABNORMALITIES ARE FOUND........................................................ 28 WORKING WEAR AND PERSONAL PROTECTIVE ITEMS........................................ 28 FIRE EXTINGUISHER AND FIRST AID KIT............................................... 28 SAFETY EQUIPMENT.................................................................. 29 KEEP MACHINE CLEAN................................................................ 29 KEEP OPERATOR'S COMPARTMENT CLEAN................................................. 29 LEAVING OPERATOR'S SEAT WITH LOCK................................................. 29 HANDRAILS AND STEPS............................................................... 30 MOUNTING AND DISMOUNTING.......................................................... 31 NO PERSONS ON ATTACHMENTS......................................................... 31 BURN PREVENTION................................................................... 31 FIRE PREVENTION AND EXPLOSION PREVENTION.......................................... 32 ACTION IF FIRE OCCURS............................................................. 33 WINDSHIELD WASHER FLUID........................................................... 33 FALLING OBJECTS, FLYING OBJECTS AND INTRUDING OBJECTS PREVENTION.................. 33 ATTACHMENT INSTALLATION........................................................... 33 ATTACHMENT COMBINATIONS........................................................... 34 CAB WIDOW GLASSES................................................................. 34 UNAUTHORIZED MODIFICATIONS........................................................ 34 SAFETY AT JOBSITE................................................................. 34 WORKING ON LOOSE GROUND........................................................... 34 DISTANCE TO HIGH VOLTAGE CABLES................................................... 35 ENSURE GOOD VISIBILITY............................................................ 35 VENTILATION FOR ENCLOSED AREA..................................................... 36 SIGNALMAN'S SIGNAL AND SIGNS...................................................... 36 EMERGENCY EXIT FROM OPERATOR'S CAB................................................ 36 ELECTROMAGNETIC INTERFERENCE...................................................... 36 ASBESTOS DUST HAZARD PREVENTION................................................... 36 SAFETY MACHINE OPERATION.............................................................. 37 STARTING ENGINE................................................................... 37 CHECKS BEFORE STARTING ENGINE................................................. 37 SAFETY RULES FOR STARTING ENGINE.............................................. 38 STARTING ENGINE IN COLD WEATHER............................................... 38 OPERATION......................................................................... 39 CHECKS AFTER STARTING ENGINE.................................................. 39 SAFETY RULES FOR CHANGING MACHINE DIRECTIONS.................................. 39 SAFETY RULES FOR TRAVELLING................................................... 40 TRAVELLING ON SLOPES.......................................................... 41 OPERATIONS ON SLOPES.......................................................... 42 PROHIBITED OPERATIONS......................................................... 42 OPERATIONS ON SNOW............................................................ 43 PARKING MACHINE............................................................... 44 TRANSPORTATION.................................................................... 45 SHIPPING THE MACHINE.......................................................... 45 BATTERY........................................................................... 46 BATTERY HAZARD PREVENTION..................................................... 46 STARTING ENGINE WITH BOOSTER CABLES........................................... 47 TOWING............................................................................ 48 SAFETY RULES FOR TOWING....................................................... 48 LIFTING OBJECTS WITH BUCKET....................................................... 49 SAFETY RULES FOR LIFTING OBJECTS.............................................. 49 SAFETY MAINTENANCE INFORMATION........................................................ 50 WARNING TAG....................................................................... 50 KEEP WORK PLACE CLEAN AND TIDY.................................................... 50 APPOINT LEADER WHEN WORKING WITH OTHERS........................................... 50 STOP ENGINE BEFORE CARRYING OUT MAINTENANCE....................................... 51 TWO WORKERS FOR MAINTENANCE WHEN ENGINE IS RUNNING................................ 52 PROPER TOOLS...................................................................... 52 ACCUMULATOR....................................................................... 53 PERSONNEL......................................................................... 53 ATTACHMENTS....................................................................... 53 WORK UNDER THE MACHINE............................................................ 53 NOISE............................................................................. 54 WHEN USING HAMMER................................................................. 54 WELDING WORKS..................................................................... 54 REMOVING BATTERY TERMINALS........................................................ 54 SAFETY FIRST WHEN USING HIGH-PRESSURE GREASE TO ADJUST TRACK TENSION.............. 55 DO NOT DISASSEMBLE RECOIL SPRINGS................................................. 55 SAFETY RULES FOR HIGH-PRESSURE OIL................................................ 55 SAFETY HANDLING HIGH-PRESSURE HOSES............................................... 56 WASTE MATERIALS................................................................... 56 AIR CONDITIONER MAINTENANCE....................................................... 56 COMPRESSED AIR.................................................................... 56 PERIODIC REPLACEMENT OF SAFETY CRITICAL PARTS..................................... 57 OPERATION................................................................................. 59 GENERAL VIEW.......................................................................... 60 GENERAL VIEW OF MACHINE........................................................... 60 GENERAL VIEW CONTROLS AND GAUGES.................................................. 61 EXPLANATION OF COMPONENTS............................................................. 62 MACHINE MONITOR................................................................... 62 BASIC OPERATION OF MACHINE MONITOR............................................ 63 BASIC CHECK ITEMS................................................................. 65 CAUTION ITEMS................................................................. 67 EMERGENCY STOP ITEMS.......................................................... 70 METER DISPLAY PORTION......................................................... 72 MONITOR SWITCHES.............................................................. 76 WORKING MODE SELECTOR SWITCH (BASIC SWITCH)................................... 77 AUTO-DECELERATION SWITCH...................................................... 78 TRAVEL SPEED SELECTOR SWITCH.................................................. 79 WIPER SWITCH.................................................................. 80 WINDOW WASHER SWITCH.......................................................... 80 MAINTENANCE SWITCH............................................................ 81 SELECT SWITCH................................................................. 83 BACK SWITCH................................................................... 84 UP SWITCH, DOWN SWITCH........................................................ 84 INPUT CONFIRMATION SWITCH..................................................... 84 LIQUID CRYSTAL MONITOR ADJUSTMENT SWITCH...................................... 85 SWITCHES.......................................................................... 87 STARTING SWITCH............................................................... 87 FUEL CONTROL DIAL............................................................. 88 CIGARETTE LIGHTER............................................................. 88 SWING LOCK SWITCH............................................................. 89 LAMP SWITCH................................................................... 89 ALARM BUZZER STOP SWITCH...................................................... 90 HORN SWITCH................................................................... 90 KNOB SWITCH................................................................... 90 ROOM LAMP SWITCH.............................................................. 91 EMERGENCY PUMP DRIVE SWITCH................................................... 91 SWING BRAKE CANCEL SWITCH..................................................... 91 LOWER WIPER SWITCH............................................................ 92 REVOLVING WARNING LAMP SWITCH................................................. 92 HEATED OPERATOR SEAT SWITCH................................................... 92 CONTROL LEVERS, PEDALS............................................................ 93 SAFETY LOCK LEVER............................................................. 93 TRAVEL LEVERS................................................................. 94 WORK EQUIPMENT CONTROL LEVER.................................................. 95 CEILING WINDOW.................................................................... 96 FRONT WINDOW...................................................................... 97 EMERGENCY EXIT FROM OPERATOR'S CAB................................................102 DOOR LOCK.........................................................................102 CAP, COVER WITH LOCK..............................................................103 METHOD OF OPENING AND CLOSING CAP WITH LOCK...................................103 METHOD OF OPENING AND CLOSING COVER WITH LOCK.................................103 HOT AND COOL BOX..................................................................104 CAB RADIO.........................................................................104 MAGAZINE BOX......................................................................104 ASHTRAY...........................................................................105 HANDLING AIR CONDITIONER..........................................................106 GENERAL LOCATIONS OF CONTROL PANEL............................................106 METHOD OF OPERATION...........................................................110 PRECAUTIONS WHEN USING AIR CONDITIONER........................................117 CHECK, MAINTAIN MACHINE EQUIPPED WITH AIR CONDITIONER.........................117 OTHER FUNCTIONS...............................................................118 CAR RADIO.........................................................................119 FUSE..............................................................................120 FUSE CAPACITIES AND CIRCUIT NAMES.............................................121 FUSIBLE LINK......................................................................121 CONTROLLER (COMPUTER).............................................................122 TOOLBOX...........................................................................122 GREASE GUN HOLDER.................................................................122 REFUELLING PUMP...................................................................123 HANDLING THE ACCUMULATOR..........................................................123 RELEASING PRESSURE IN CONTROL CIRCUIT ON MACHINE EQUIPPED WITH ACCUMULATOR....124 MACHINE OPERATIONS AND CONTROLS.......................................................125 BEFORE STARTING ENGINE............................................................125 WALK-AROUND CHECKS............................................................125 CHECKS BEFORE STARTING........................................................126 ADJUST BEFORE OPERATION.......................................................131 SEAT BELT.....................................................................134 OPERATIONS BEFORE STARTING ENGINE.............................................135 STARTING ENGINE...................................................................138 NORMAL STARTING...............................................................138 STARTING ENGINE IN COLD WEATHER...............................................139 AFTER STARTING ENGINE.............................................................142 BREAKING-IN THE NEW MACHINE...................................................142 WARMING-UP OPERATION..........................................................143 IN COLD AREAS (AUTOMATIC WARMING-UP OPERATION)....................................146 STOPPING THE ENGINE...............................................................150 CHECK AFTER SHUTTING OFF ENGINE...................................................150 MACHINE OPERATION.................................................................151 PREPARATIONS FOR MOVING THE MACHINE OFF.......................................151 MOVING MACHINE FORWARD........................................................152 MOVING MACHINE BACKWARD.......................................................153 STOPPING MACHINE..............................................................154 STEERING THE MACHINE..............................................................155 Steering......................................................................155 SWINGING..........................................................................157 WORK EQUIPMENT CONTROLS AND OPERATIONS............................................158 OPERATING WORKING MODE............................................................159 PROHIBITED OPERATIONS.............................................................160 OPERATIONS USING SWING FORCE..................................................160 OPERATIONS USING TRAVEL FORCE.................................................160 OPERATIONS USING HYDRAULIC CYLINDER STROKE ENDS...............................160 OPERATIONS USING BUCKET DROPPING FORCE........................................161 OPERATIONS USING MACHINE DROPPING FORCE.......................................161 DIGGING HARD ROCKY GROUND.....................................................161 SUDDEN LEVER SHIFTING HIGH SPEED TRAVEL.......................................161 GENERAL OPERATION INFORMATION.....................................................162 TRAVELLING....................................................................162 HIGH SPEED TRAVEL.............................................................162 PERMISSIBLE WATER DEPTH.......................................................162 TRAVELLING ON SLOPES..............................................................163 TRAVELLING DOWNHILL...........................................................164 ENGINE STOPPED ON SLOPE.......................................................164 PRECAUTIONS ON SLOPES.........................................................164 ESCAPE FROM MUD...................................................................165 STUCK ONE SIDE OF TRACK.......................................................165 STUCK BOTH SIDES OF TRACKS....................................................165 RECOMMENDED APPLICATIONS..........................................................166 BACKHOE WORK..................................................................166 SHOVEL WORK...................................................................166 DITCHING WORK.................................................................166 LOADING WORK..................................................................167 REPLACEMENT AND INVERSION OF BUCKET...............................................168 REPLACEMENT...................................................................168 INVERSION.....................................................................170 PARKING MACHINE...................................................................171 CHECK AFTER FINISHING WORK........................................................172 LOCKING...........................................................................173 TRANSPORTATION........................................................................174 TRANSPORTATION PROCEDURE..........................................................174 LOADING AND UNLOADING WITH TRAILER................................................175 LOADING.......................................................................176 SECURING MACHINE..............................................................178 UNLOADING.....................................................................180 LIFTING MACHINE...................................................................182 STANDARD SPECIFICATION MACHINE................................................182 COLD WEATHER OPERATION................................................................184 COLD WEATHER OPERATION INFORMATION................................................184 FUEL AND LUBRICANTS...........................................................184 COOLING SYSTEM COOLANT........................................................184 BATTERY.......................................................................185 AFTER DAILY WORK COMPLETION.......................................................186 AFTER COLD WEATHER SEASON.........................................................187 LONG TERM STORAGE.....................................................................188 BEFORE STORAGE....................................................................188 DURING STORAGE....................................................................188 AFTER STORAGE.....................................................................189 STARTING MACHINE AFTER LONG-TERM STORAGE......................................189 TROUBLESHOOTING.......................................................................190 AFTER RUNNING OUT OF FUEL.........................................................190 PHENOMENA THAT ARE NOT FAILURES...................................................190 TOWING THE MACHINE................................................................191 LIGHTWEIGHT TOWING HOOK...........................................................191 PRECAUTIONS ON PARTICULAR JOBSITES................................................192 DISCHARGED BATTERY................................................................193 REMOVAL AND INSTALLATION OF BATTERY...........................................194 BATTERY CHARGES...............................................................194 STARTING ENGINE WITH BOOSTER CABLES...........................................195 OTHER TROUBLE.....................................................................197 ELECTRICAL SYSTEM.............................................................197 CHASSIS.......................................................................198 ENGINE........................................................................199 ELECTRONIC CONTROL SYSTEM.....................................................201 MAINTENANCE...............................................................................205 MAINTENANCE INFORMATION...............................................................206 SERVICE METER READING.............................................................206 KOMATSU GENUINE REPLACEMENT PARTS.................................................206 KOMATSU GENUINE LUBRICANTS........................................................206 WINDSHIELD WASHER FLUID...........................................................206 FRESH AND CLEAN LUBRICANTS........................................................206 CHECK DRAINED OIL AND USED FILTER.................................................206 FUEL STRAINER.....................................................................206 WELDING INSTRUCTIONS..............................................................206 DO NOT DROP THINGS INSIDE MACHINE.................................................207 DUSTY JOBSITE.....................................................................207 AVOID MIXING LUBRICANTS...........................................................207 LOCKING THE INSPECTION COVERS.....................................................207 HYDRAULIC SYSTEM - AIR BLEEDING...................................................207 HYDRAULIC HOSE INSTALLATION.......................................................208 CHECKS AFTER INSPECTION AND MAINTENANCE WORKS.....................................208 SELECTING FUEL AND LUBRICANTS TO MATCH AMBIENT TEMPERATURE........................208 LUBRICANTS, COOLANT AND FILTERS.......................................................209 HANDLING OIL, FUEL, COOLANT, AND PERFORMING OIL CLINIC............................209 OIL...........................................................................209 FUEL..........................................................................209 COOLING SYSTEM COOLANT........................................................210 GREASE........................................................................210 CARRYING OUT KOWA (Komatsu Oil Wear Analysis).................................210 OIL AND FUEL STORAGE..........................................................211 FILTERS.......................................................................212 EXPLANATION OF LUBRICATION CHART DECAL............................................213 ELECTRIC SYSTEM MAINTENANCE.......................................................214 HANDLING HYDRAULIC SYSTEM.........................................................215 WEAR PARTS LIST.......................................................................216 USE OF FUEL, COOLANT AND LUBRICANTS ACCORDING TO AMBIENT TEMPERATURE..................217 PROPER SELECTION OF FUEL, COOLANT AND LUBRICANTS..................................217 TIGHTENING TORQUE SPECIFICATIONS......................................................220 TIGHTENING TORQUE LIST............................................................220 PERIODIC REPLACEMENT OF SAFETY CRITICAL PARTS.........................................221 SAFETY CRITICAL PARTS.............................................................221 MAINTENANCE SCHEDULE..................................................................222 MAINTENANCE SCHEDULE CHART........................................................222 Initial 250 Hours Maintenance (Only after the first 250 hours)................222 When Required.................................................................222 Checks Before Starting........................................................222 Every 100 Hours Maintenance...................................................222 Every 250 Hours Maintenance...................................................223 Every 500 Hours Maintenance...................................................223 Every 1000 Hours Maintenance..................................................223 Every 2000 Hours Maintenance..................................................223 Every 4000 Hours Maintenance..................................................224 Every 5000 Hours Maintenance..................................................224 MAINTENANCE INTERVAL FOR HYDRAULIC BREAKER........................................225 MAINTENANCE PROCEDURE.................................................................226 INITIAL 250 HOURS MAINTENANCE (ONLY AFTER THE FIRST 250 HOURS)....................226 WHEN REQUIRED.....................................................................227 CHECK, CLEAN AND REPLACE AIR CLEANER ELEMENT..................................227 CLEAN INSIDE OF COOLING SYSTEM................................................232 CHECK AND TIGHTEN TRACK SHOE BOLTS............................................235 CHECK AND ADJUST TRACK TENSION................................................236 CHECK ELECTRICAL INTAKE AIR HEATER............................................238 REPLACE BUCKET TEETH..........................................................239 ADJUST BUCKET CLEARANCE.......................................................239 CHECK WINDOW WASHER FLUID LEVEL, ADD FLUID....................................241 CHECK AND ADJUST AIR CONDITIONER (IF EQUIPPED)................................242 WASHING WASHABLE FLOOR........................................................243 METHOD OF SETTING MACHINE ANGLE...............................................245 BLEEDING AIR FROM HYDRAULIC SYSTEM............................................246 METHOD FOR RELEASING INTERNAL PRESSURE IN HYDRAULIC CIRCUIT...................248 CHECK BEFORE STARTING.............................................................249 EVERY 100 HOURS MAINTENANCE.......................................................250 LUBRICATING...................................................................250 LUBRICATING...................................................................250 EVERY 250 HOURS MAINTENANCE.......................................................251 LUBRICATING...................................................................251 CHECK OIL LEVEL IN MACHINERY CASE, ADD OIL....................................252 CHECK OIL LEVEL IN FINAL DRIVE CASE, ADD OIL..................................253 CHECK LEVEL OF BATTERY ELECTROLYTE............................................254 CHECK, ADJUST TENSION OF AIR CONDITIONER COMPRESSOR BELT......................257 EVERY 500 HOURS MAINTENANCE.......................................................258 LUBRICATING...................................................................258 LUBRICATE SWING CIRCLE (2 POINTS).............................................259 CHANGE OIL IN ENGINE OIL PAN, REPLACE ENGINE OIL FILTER CARTRIDGE.............260 REPLACE FUEL FILTER CARTRIDGE.................................................261 CHECK SWING PINION GREASE LEVEL, ADD GREASE...................................262 CLEAN AND INSPECT RADIATOR FINS, OIL COOLER FINS AND CONDENSER FINS...........262 CLEAN INTERNAL AND EXTERNAL AIR FILTERS OF AIR CONDITIONER SYSTEM.............263 REPLACE BREATHER ELEMENT IN HYDRAULIC TANK....................................265 EVERY 1000 HOURS MAINTENANCE......................................................266 REPLACE HYDRAULIC FILTER ELEMENT..............................................266 CHANGE OIL IN SWING MACHINERY CASE............................................267 CHECK OIL LEVEL IN DAMPER CASE, ADD OIL.......................................268 CHECK ALL TIGHTENING PARTS OF TURBOCHARGER....................................268 CHECK PLAY OF TURBOCHARGER ROTOR..............................................268 CHECK FAN BELT TENSION AND REPLACE FAN BELT...................................268 EVERY 2000 HOURS MAINTENANCE......................................................269 CHANGE OIL IN FINAL DRIVE CASE................................................269 CLEAN HYDRAULIC TANK STRAINER.................................................270 CLEAN, CHECK TURBOCHARGER.....................................................270 CHECK ALTERNATOR, STARTING MOTOR..............................................270 CHECK ENGINE VALVE CLEARANCE, ADJUST..........................................270 CHECK VIBRATION DAMPER........................................................270 EVERY 4000 HOURS MAINTENENCE......................................................271 CHECK WATER PUMP..............................................................271 EVERY 5000 HOURS MAINTENANCE......................................................272 CHANGE OIL IN HYDRAULIC TANK..................................................272 SPECIFICATIONS............................................................................273 SPECIFICATIONS........................................................................274 WORKING RANGE MONO BOOM...........................................................275 WORKING RANGE 2 PIECE BOOM........................................................276 EXPLANATION OF LIFTING CAPACITY CHART.............................................277 EXPLANATION OF LIFTING CAPACITY CHART (PC290LC,NLC-7K 2 PIECE BOOM)...............280 PC290LC-7K 2 PIECE BOOM.......................................................281 PC290NLC-7K 2 PIECE BOOM......................................................282 ATTACHMENTS AND OPTIONS...................................................................283 GENERAL PRECAUTIONS...................................................................284 PRECAUTIONS RELATED TO SAFETY.....................................................284 PRECAUTIONS WHEN INSTALLING ATTACHMENTS...........................................286 HANDLING BUCKET WITH HOOK.............................................................287 CHECKING FOR DAMAGE TO BUCKET WITH HOOK...........................................287 PROHIBITED OPERATIONS.............................................................287 PRECAUTIONS DURING OPERATIONS.................................................287 MACHINES READY FOR ATTACHMENTS........................................................288 EXPLANATION OF COMPONENTS.........................................................288 STOP VALVE....................................................................288 SELECTOR VALVE................................................................289 ATTACHMENT CONTROL PEDAL......................................................289 LOCK PIN......................................................................289 ADDITIONAL FILTER FOR BREAKER.................................................290 ACCUMULATOR...................................................................290 HYDRAULIC CIRCUIT.................................................................291 SWITCHING HYDRAULIC CIRCUIT...................................................291 ADJUSTING OIL FLOW............................................................291 SWITCHING BETWEEN BREAKER AND GENERAL ATTACHMENT..............................291 HYDRAULIC CIRCUIT CONNECTION..................................................292 PATH OF OIL...................................................................292 REPLACE ADDITIONAL BREAKER FILTER ELEMENT.....................................293 ATTACHMENT MOUNTING/DISMOUNTING PROCEDURE.........................................294 OPERATION.........................................................................296 LONG-TERM STORAGE.................................................................298 SPECIFICATIONS....................................................................298 ATTACHMENT GUIDE......................................................................299 COMBINATIONS OF WORK EQUIPMENT....................................................299 SELECTION OF TRACK SHOES..........................................................301 METHOD OF SELECTING SHOES.....................................................301 SELECTION OF BUCKET TEETH.........................................................302 METHOD OF SELECTING TEETH.....................................................302 Use of vertical pin teeth.....................................................302 Use of horizontal pin teeth...................................................302 Use of long-life teeth........................................................302 Self-sharpening teeth (both vertical pin type and horizontal pin type)........302 STANDARDS FOR SELECTING VERTICAL PIN TYPE AND HORIZONTAL PIN TYPE TEETH...........302 HANDLING OF RUBBER PAD SHOE AND ROAD LINER........................................303 WORKING ENVIRONMENT...........................................................303 WORKING CONDITIONS............................................................303 STORAGE AND MAINTENANCE.......................................................304 EXTENT OF DAMAGE TO RUBBER....................................................304 CHECK ROAD LINER (MACHINES EQUIPPED WITH ROAD LINER)..........................304 HANDLING TRAPEZOIDAL BUCKET.......................................................305 HOW TO PERFORM EXCAVATION.....................................................305 HANDLING EXTENSION ARM............................................................306 HANDLING CLAMSHELL BUCKET.........................................................307 PRECAUTIONS WHEN USING........................................................307 LUBRICATING...................................................................307 RECOMMENDED ATTACHMENT OPERATIONS.....................................................308 HYDRAULIC BREAKER.................................................................308 MAIN APPLICATIONS.............................................................308 PROHIBITED WORKS..............................................................310 GREASING POSITION FOR HYDRAULIC BREAKER.......................................312 2-PC BOOM.............................................................................313 FEATURES OF 2-PIECE BOOM & ARM....................................................313 OPERATION.........................................................................314 BEFORE STORAGE POSTURE WHEN LEAVING MACHINE...................................315 TESTING AND ADJUSTING.........................................................316 PERODIC MAINTENANCE...........................................................316 TRANSPORTATION....................................................................317
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