Komatsu Hydraulic Mining Shovel PC8000E-6 Operator & Maintenance Manual – PDF DOWNLOAD

Komatsu Hydraulic Mining Shovel PC8000E-6 Operator & Maintenance Manual – PDF DOWNLOAD

DESCRIPTION:

Komatsu Hydraulic Mining Shovel PC8000E-6 Operator & Maintenance Manual – PDF DOWNLOAD

SERIAL NUMBER 12086

1.1BEFORE READING THIS MANUAL
This manual gives details of the operation and methods of inspection and maintenance for this machine that must be obeyed in order to use the machine safely. Most accidents are caused by the failure to follow fundamental safety rules for the operation and maintenance of machines.
Read, understand and follow all precautions and warnings in this manual and on the machine before performing operation and maintenance. Failure to do so may result in serious injury or death.
Komatsu cannot predict every circumstance that may involve a potential hazard when the machine is used. Therefore, the safety messages in this manual and on the machine may not include all possible safety precautions. If you carry out any operation, inspection or maintenance under conditions that are not described in this manual, understand that it is your responsibility to take the necessary precautions to ensure safety. In no event should you or others engage in prohibited uses or actions described in this manual. Improper operation and maintenance of the machine can be hazardous and could result in serious injury or death.
If you sell the machine, be sure to give this manual to the new owner together with the machine.
This manual uses the international units (SI) for units of measurement. For reference, units that have been used in the past are given in ( ).
The explanations, values, and illustrations in this manual have been prepared based on the latest information available as of the date of publication. Continuing improvements in the design of this machine may lead to additional changes that are not reflected in this manual. Consult Komatsu or your Komatsu distributor for the latest available information concerning your machine or with questions regarding information contained in this manual.
The numbers in circles in the illustrations correspond to the numbers in ( ) in the text. (For example:
Komatsu delivers machines that comply with all applicable regulations and standards of the country to which it has been shipped. If the machine has been purchased in another country, it may lack certain safety devices and specifications that are necessary for use in your country. If there is any question about whether your product complies with the applicable standards and regulations of your country, consult Komatsu or your Komatsu distributor before operating the machine.
Always keep the Operation and Maintenance Manual in the storage space provided inside the operator’s cabin (see Fig. 1-1) so that all relevant personnel can read it at any time. If this manual is lost or damaged, contact your distributor immediately to arrange for its replacement.

TABLE OF CONTENTS:

Komatsu Hydraulic Mining Shovel PC8000E-6 Operator & Maintenance Manual – PDF DOWNLOAD

1 FOREWORD 1-1
11BEFORE READING THIS MANUAL 1-2
12EC DECLARATION OF CONFORMITY 1-3
13PRIVACY POLICY ON MACHINES EQUIPPED WITH MACHINE MONITORING SYSTEMS 1-4
14RADIO WAVE REGULATIONS FOR KOMTRAX AND KOMTRAX PLUS 1-8
15DIRECTIONS OF THE MACHINE 1-9
16SPECIFICATION AND SERIAL PLATE 1-10
161 PRODUCT IDENTIFICATION NUMBER 1-10
17DIVISION OF THE BINDER 1-11
18DESIGNATED USE OF THE SHOVEL 1-12
19DELIVERY OF THE SHOVEL 1-13
191 SPARE PARTS 1-13
192 SERVICE 1-13
110EXPLANATION OF ABBREVIATIONS 1-14
2 SAFETY 2-1
21SAFETY INFORMATION 2-2
22OVERVIEW 2-3
221 NORMAL OPERATIONS 2-3
222 REGULAR MAINTENANCE 2-3
223 TROUBLESHOOTING, ADJUSTMENTS AND REPAIR 2-3
224 ADDITIONAL SAFETY PRECAUTIONS 2-3
23SOUND PRESSURE AND VIBRATION LEVELS IN THE OPERATOR’S CAB 2-4
231 SOUND 2-4
232 VIBRATION 2-4
24GENERAL PRECAUTIONS COMMON TO OPERATION ON THE EXCAVATOR 2-5
241 UNDERSTANDING THE MACHINE 2-5
242 PRECAUTIONS BEFORE STARTING OPERATION ON THE EXCAVATOR 2-5
243 PREPARATIONS FOR SAFE OPERATION 2-5
244 FIRE PREVENTION 2-7
245 PRECAUTIONS WHEN GETTING ON OR OFF THE MACHINE 2-10
246 BURN PREVENTION 2-11
247 PRECAUTIONS WHEN CLEANING CAB GLASS 2-12
248 PRECAUTIONS RELATED TO PROTECTIVE STRUCTURES 2-12
249 PRECAUTIONS RELATED TO AIRBOURNE AND EJECTED DEBRIS 2-13
2410 ELECTROMAGNETIC COMPATIBILITY (EMC) 2-13
2411 PRECAUTIONS AT JOBSITE 2-14
2412 STARTING MOTOR 2-20
2413 OPERATION 2-21
25PRECAUTION FOR MAINTENANCE 2-27
251 GENERAL PRECAUTIONS 2-27
252 PRECAUTIONS FOR INSPECTION AND MAINTENANCE 2-35
253 PRECAUTIONS WITH HIGH PRESSURE FLUID 2-36
26ADDITIONAL SAFETY INFORMATION FOR TROUBLESHOOTING AND ADJUSTMENTS 2-41
261 INSPECTION OF THE HYDRAULIC SYSTEM 2-41
262 TWO WORKERS ONLY WHEN THE MACHINE IS RUNNING DURING ADJUSTMENTS 2-41
263 AREAS OF POTENTIAL DANGER AROUND THE EXCAVATOR 2-41
27SPECIAL SAFETY EQUIPMENT 2-42
271 FRONT GUARD PROTECTIVE STRUCTUR ’FOPS’ FOR OPERATOR’S CAB 2-43
272 OBJECT HANDLING 2-43
273 LIGHTING 2-43
274 WARNING BEACON 2-43
275 SAFETY HARNESS IN CONFORMITY WITH EN 361 (EUROPEAN STANDARD) 2-43
28HIGH VOLTAGE SAFETY INSTRUCTIONS FOR MACHINES WITH ELECTRIC MOTOR 2-51
281 QUALIFICATION OF PERSONNEL 2-51
282 ELECTRICAL TOOLS 2-51
283 GENERAL PREPARATION BEFORE WORKING ON ELECTRICAL EQUIPMENT 2-52
284 CONNECTION OF PILOT LINE (GROUND CHECK WIRE) 2-52
285 PREPARATION BEFORE WORKING ON THE CABLE DRUM 2-52
286 PREPARATION BEFORE WORKING ON THE CABLE GUIDE 2-53
287 MODIFICATION OF THE ELECTRICAL SYSTEM 2-53
288 FIRE 2-53
289 GENERAL INSTRUCTIONS 2-54
2810 GROUNDING PROCEDURE FOR THE HIGH VOLTAGE SYSTEM 2-54
29SAFETY WARNING SIGNS 2-71
291 LOCATION AND DESCRIPTION OF THE SIGNS 2-72
3 OPERATION 3-89
31FOREWORD 3-90
32CONSTRUCTION OF THE SHOVEL 3-91
321 OVERALL VIEW WITH BACKHOE ATTACHMENT 3-91
322 OVERALL VIEW WITH BOTTOM DUMP BUCKET ATTACHMENT 3-92
323 SUPERSTRUCTURE 3-94
324 UNDERCARRIAGE 3-102
325 HYDRAULICALLY OPERATED ACCESS LADDER 3-104
326 EMERGENCY ESCAPE LADDER AT THE OPERATOR’S CAB PLATFORM 3-108
327 EMERGENCY ESCAPE LADDER AT THE UPPER DECK AND MACHINERY HOUSE
ESCAPE DOOR 3-110
328 EMERGENCY ESCAPE LADDER AND ESCAPE HATCH IN THE MACHINERY
HOUSE 3-112
329 FOLDING LADDER INSIDE OF CARBODY 3-114
3210 BOOM ACCESS LADDER AND WALKWAY 3-116
3211 EMERGENCY MOTOR SHUTDOWN FROM GROUND MAN OR OPERATOR WARNING
SYSTEM 3-118
3212 OPERATOR’S CAB WITH INTEGRATED FALLING OBJECT PROTECTIVE
STRUCTURE (FOPS) 3-120
33OPERATOR’S CAB – CONTROLS 3-130
331 CONTROLS WITH BACKHOE ATTACHMENT 3-130
332 CONTROLS WITH BOTTOM DUMP BUCKET ATTACHMENT 3-134
333 OPERATOR’S CONSOLE 3-139
334 INTERFACE PANEL FOR DIAGNOSTICS 3-145
34KOMTRAX PLUS– VEHICLE HEALTH MONITOR 3-146
341 SEQUENCE OF DISPLAYS 3-147
342 OPENING SCREEN 3-147
343 MAIN GAUGE SCREENS 1 TO 3 3-148
344 ENERGY CONSUMPTION SCREEN 3-153
345 FAILURE MESSAGE HISTORY SCREEN FOR OPERATOR 3-153
346 MAIN SCREEN – CHANGE >TIME >SMR >DATE 3-154
347 MAINTENANCE MONITOR 3-154
348 SETTINGS FOR OPERATOR 3-155
349 SERVICE MENU 3-159
3410 AUTOMATIC MESSAGES 3-159
35CAMERA SYSTEM WITH MONITORS (SPECIAL EQUIPMENT) 3-164
351 LOCATION OF MONITORS AND CONTROL UNITS 3-165
36OPERATING THE HEATER, VENTILATION AND AIR CONDITIONING 3-172
37MACHINERY HOUSE 3-176
371 MOTOR SHUTDOWN SWITCHES 3-177
372 MOTOR LOAD CUT-OFF SWITCH BOX (SPECIAL EQUIPMENT) 3-179
373 BATTERY MAIN SWITCHES AND SAFETY SWITCH FOR MAINTENANCE 3-181
374 CENTRAL CONTROL AND FILTER PANEL 3-183
375 CONTROL AND FILTER PANEL ON FRONT- AND REAR PTO 3-185
376 FLUID MONITORING MODULE (SPECIAL EQUIPMENT ONLY) 3-185
38MEDIUM VOLTAGE SWITCH CABINET IN CAB BASE 3-186
381 COMPONENTS IN THE MEDIUM VOLTAGE SWITCH CABINET 3-189
382 LOW VOLTAGE SWITCH BOARD IN CAB BASE 3-191
383 MASTER TURBO CONTROLLER MTC – LED INDICATIONS 3-193
384 BINARY FAULT CODE LIST 3-200
385 TABLE OF LOCATION NUMBERS FOR ELECTRICAL COMPONENTS 3-202
386 MONITOR AND CONTROL PANEL 3-205
39PREHEATING SYSTEM 3-208
391 HYDRAULIC OIL AND PTO GEAR OIL HEATINGS 3-209
310CHECKS BEFORE STARTING THE MOTORS 3-212
311STARTING THE MAIN DRIVE MOTORS 3-216
3111 STARTING PROCEDURE 3-219
312MOVING THE SHOVEL 3-223
3121 TRAVEL CONTROL WITH FOOT PEDALS 3-223
3122 TRAVELLING INSTRUCTIONS 3-225
3123 UNDERCARRIAGE TRACK SLIDERS 3-228
313SLEWING AND BRAKING THE SUPERSTRUCTURE 3-230
3131 SLEWING THE SUPERSTRUCTURE 3-230
314WORKING WITH THE ATTACHMENT 3-232
3141 COMBINED OPERATION CYCLES 3-233
315WORKING INSTRUCTIONS 3-236
3151 STABILITY OF THE SHOVEL 3-236
3152 FURTHER OPERATING PRACTICES 3-238
3153 LOADING TRUCKS 3-242
316PARKING THE SHOVEL 3-243
317PARKING THE SHOVEL 3-244
318STOPPING THE MAIN DRIVE MOTORS 3-246
3181 RELIEVE PRESSURE IN THE HYDRAULIC SYSTEM 3-249
319OPERATION OF THE LUBRICATION SYSTEM 3-250
3191 CENTRAL LUBRICATION SYSTEM -CLS- FOR SUPERSTRUCTURE 3-250
3192 SWING CIRCLE PINION LUBRICATION SYSTEM -SLS- 3-252
320FIRE DETECTION, ACTUATION AND SUPPRESSION SYSTEM 3-254
3201 CONTROL UNITS FOR THE FIRE DETECTION, ACTUATION AND SUPPRESSION
SYSTEMS 3-255
3202 REMOTE HIGH LEVEL ALARM *FIRE* LOCATED ON THE CAB 3-259
3203 ACTUATION MODES OF THE FIRE SUPPRESSION SYSTEM 3-259
3204 IN THE CASE OF A FIRE 3-261
3205 DISPLAY MODULE 3-263
3206 INTERFACE CONTROL MODULE 3-265
321TRANSFER PUMP FOR HYDRAULIC OIL 3-266
3211 OPERATING THE TRANSFER PUMP 3-267
3212 TRANSFUSION PROCEDURE 3-269
322CENTRAL REFILLING SYSTEM 3-272
3221 SYSTEMS CONNECTED TO THE REFILLING SYSTEM 3-273
3222 OPERATING THE HYDRAULIC SERVICE ARM 3-275
3223 RECEIVER PANEL AND MONITOR BOX 3-277
3224 REFILLABLE GREASE CONTAINERS OF THE AUTOMATIC LUBRICATION
SYSTEMS MOUNTED ON THE POWER HOUSE ROOF 3-279
323SERVICE CRANE (SPECIAL EQUIPMENT) 3-280
3231 OPERATING THE CRANE 3-281
324CABLE DRUM (SPECIAL EQUIPMENT) 3-284
3241 DESCRIPTION OF MAIN COMPONENTS 3-285
3242 OPERATION OF THE CABLE DRUM 3-287
325CABLE GUIDE (IF SO EQUIPPED) 3-291
3251 LIFTING DEVICE FOR THE POWER CABLE 3-291
326WORK ON THE LOADER ATTACHMENT 3-292
327TRANSPORTATION AND LIFTING OF THE SHOVEL 3-293
3271 DISASSEMBLING OF THE SHOVEL 3-293
3272 TRANSPORTATION AND LIFTING 3-293
328RETRIEVAL PROCEDURE 3-294
329SHOVEL STORAGE 3-295
3291 PREPARING FOR STORAGE 3-295
3292 ONE MONTH REPETITIVE SERVICE PERIOD 3-295
3293 SIX MONTH REPETITIVE SERVICE PERIOD 3-295
3294 PREPARING FOR OPERATION 3-296
330TROUBLE SHOOTING 3-297
3301 GENERAL 3-297
3302 MAIN DRIVE ELECTRIC MOTOR 3-297
3303 HYDRAULIC SYSTEM 3-298
3304 FINAL DRIVES AND SWING GEAR 3-299
3305 CRAWLER TRACKS 3-299
4 MAINTENANCE 4-301
41FOREWORD 4-302
42PRECAUTIONS FOR MAINTENANCE 4-303
421 GROUNDING PROCEDURES FOR THE HIGH VOLTAGE SYSTEM 4-304
43FLUIDS AND LUBRICANTS 4-305
431 LUBRICANTS FOR OPERATIONS IN COLD & ARCTIC CLIMATES 4-305
432 FLUIDS AND LUBRICANTS FOR MODERATE AND HOT CLIMATES 4-306
433 MAIN DRIVE ELECTRIC MOTORS – BEARING LUBRICATION 4-309
44FILLING CAPACITIES 4-310
45STANDARD TORQUE LIST 4-311
451 TORQUE FOR FLANGE JOINTS 4-312
452 TORQUES FOR SPECIAL COMPONENTS 4-313
46LUBRICATION AND MAINTENANCE SCHEDULE 4-316
461 INITIAL SERVICING 4-316
462 SERVICING THE CRITICAL BOLT CONNECTIONS 4-317
463 PERIODIC SERVICING INTERVALS 4-317
464 PERIODIC SERVICING SCHEDULE 4-318
465 MAINTENANCE SCHEDULES OF FILTER ELEMENTS AND OTHER COMPONENTS
OF THE HYDRAULIC SYSTEM 4-322
466 MAINTENANCE OF THE MAIN DRIVE ELECTRIC MOTORS 4-323
47SAFETY CRITICAL PARTS 4-324
471 REPLACEMENT OF HYDRAULIC HOSE LINES AND FUEL HOSE LINES 4-324
472 INSPECTION OF HOSE LINES 4-325
473 PERIODIC REPLACEMENT OF FURTHER SAFETY CRITICAL PARTS 4-325
48FIRST SERVICING 4-326
481 WORKING ATTACHMENT – INITIAL CHECKS FOR PROPER LUBRICATION 4-326
482 ATTACHMENT – CHECK GREASE INJECTORS AND GREASE CONNECTIONS 4-327
483 CAR BODY AND RACEWAY OF SLEW RING – CHECK GREASE INJECTORS AND
GREASE CONNECTIONS 4-328
484 SWING CIRCLE PINION – CHECK GREASE INJECTORS AND GREASE
CONNECTIONS 4-329
485 SWING CIRCLE TOOTHING LUBRICATION 4-331
486 SWING CIRCLE – CHECK TORQUE OF BOLT CONNECTIONS 4-332
487 RE-TIGHTENING PROCEDURE OF THE CRAWLER CARRIER MOUNTING BOLTS 4-333
49WHEN NECESSARY 4-336
491 CYLINDER ROD PROTECTION (IF EQUIPPED), CHANGE SLIDING BLOCKS 4-337
492 AUTOMATIC LUBRICATION SYSTEMS FILL GREASE CONTAINERS 4-339
493 GUIDE WHEELS – REPLACE FLOATING SEALS 4-341
410EVERY 10 OPERATING HOURS OR DAILY 4-342
4101 WALK – AROUND INSPECTION 4-343
4102 CYLINDER ROD PROTECTION (IF EQUIPPED), VISUAL CHECK 4-347
4103 BOOM – CHECK LADDER AND WALKWAY 4-349
4104 CLEANING THE TRACK GROUPS 4-349
4105 SLIDERS (OPTIONAL SPECIAL EQUIPMENT)- CHECK CONDITION 4-350
4106 ELECTRICAL EQUIPMENT – CHECK CONDITION 4-350
4107 CAMERA SYSTEM 4-353
4108 EMERGENCY ESCAPE ROUTE FROM OPERATOR’S CAB 4-355
411EVERY 50 OPERATING HOURS OR WEEKLY 4-356
4111 SWING GEARS AND MOTOR ADAPTER HOUSINGS – CHECK OIL LEVEL 4-357
4112 TRAVEL GEARS WITH NUMBER 927 842 40, CHECK OIL LEVEL IN GEAR
BOXES, BRAKE HOUSINGS AND MOTOR ADAPTER HOUSINGS 4-361
4113 TRAVEL GEARS WITH NUMBER 943 190 40, CHECK OIL LEVEL IN GEAR BOXES AND
MOTOR ADAPTER HOUSINGS 4-363
4114 FINAL DRIVE HOUSINGS – CHECK OIL LEVEL 4-365
4115 PUMP DISTRIBUTOR GEARS – CHECK OIL LEVEL 4-367
4116 HYDRAULIC ACCESS LADDER – CHECK SAFETY SENSOR 4-369
4117 HYDRAULIC OIL COOLERS – INSPECT AND CLEAN IF NECESSARY 4-371
4118 PTO GEAR OIL COOLERS – INSPECT AND CLEAN IF NECESSARY 4-375
412EVERY 250 OPERATING HOURS OR MONTHLY 4-376
4121 UNDERCARRIAGE PIN CONNECTIONS – LUBRICATE 4-377
4122 HYDRAULIC OIL COOLER FAN BEARINGS – CHECK FOR LEAKAGE AND CLEAN
BREATHER FILTER 4-377
4123 SIGNAL HORN COMPRESSOR – LUBRICATE 4-377
4124 AUTOMATIC LUBRICATION SYSTEM – CLEAN BREATHER FILTER ON PUMP
STATION 4-379
4125 CABIN AIR CLEANER – INSPECT 4-381
4126 WINDSHIELD WASHER RESERVOIR – CHECK FLUID LEVEL 4-383
4127 SLIP RING UNIT – VISUAL CHECK 4-384
4128 AIR CONDITIONING FOR OPERATOR’S CAB – CHECK REFRIGERANT LEVEL 4-387
4129 ADDITIONAL AIR CONDITIONING FOR OPERATOR’S CAB – CHECK REFRIGERANT
LEVEL 4-389
41210 CABIN HEATER FILTER – INSPECT 4-391
413EVERY 500 OPERATING HOURS OR MONTHLY 4-392
4131 BATTERIES – CHECK FLUID LEVEL 4-393
4132 GREASE INJECTORS – CHECK INDICATOR STEMS 4-394
4133 CHECKING THE SLEW RING 4-395
4134 CHECKING THE SLIDERS (OPTIONAL EQUIPMENT) FOR WEAR 4-395
4135 CYLINDER ROD PROTECTION (IF EQUIPPED), INSPECT 4-397
4136 DRIVE SHAFT HOUSINGS ON PTO GEARS – CHECK OIL LEVEL 4-399
4137 CRAWLER TRACK – INSPECTION 4-401
4138 GROUND CABLE OF OPERATOR’S CAB – CHECK FOR CORRECT CONNECTION 4-407
4139 EMERGENCY LOWERING OF ACCESS LADDER – TEST FUNCTIONALITY 4-409
414EVERY 1000 OPERATING HOURS OR EVERY 6 MONTH 4-410
4141 CRITICAL BOLT CONNECTIONS 4-411
4142 ELECTRICAL EQUIPMENT – MAINTENANCE 4-417
4143 HYDRAULIC SYSTEM – FILTER SERVICE 4-419
4144 PTO’S (PUMP DISTRIBUTOR GEARS), SWING GEARS AND TRAVEL GEARS – OIL
SAMPLE ANALYSIS 4-431
4145 SIGNAL HORN COMPRESSOR – CLEAN AND LUBRICATE 4-433
4146 HYDRAULIC TRACK TENSIONING SYSTEM – CHECK PRESSURE ACCUMULATORS 4-435
4147 EMERGENCY MOTOR SHUTDOWN SWITCHES – TEST FUNCTIONALITY 4-437
4148 TEST MAINTENANCE SAFETY SWITCH 4-439
4149 MOTOR SHUTDOWN PULL CHAINS (SPECIAL EQUIPMENT) – TEST
FUNCTIONALITY 4-439
41410 HYDRAULIC OIL COOLER – INSPECT AND LUBRICATE DOOR HINGES 4-441
41411 MACHINERY HOUSE DOORS – INSPECT AND LUBRICATE DOOR HINGES 4-443
41412 ALL OTHER HINGES AND AREAS TO LUBRICATE 4-445
41413 CABIN AIR CLEANER – REPLACE FILTER 4-447
41414 SLIP RING UNIT – LUBRICATE 4-449
415EVERY 2000 OPERATING HOURS OR YEARLY 4-450
4151 HYDRAULIC SYSTEM – CHANGE OIL, REPLACE SUCTION STRAINERS AND
PULSATION DAMPER 4-451
4152 EMERGENCY ESCAPE LADDERS – INSPECTION 4-463
4153 HYDRAULIC HOSES – CHECK CONDITION 4-469
4154 PREVENTATIVE MAINTENANCE (PM) CLINIC – PERFORM TEST 4-471
4155 EMERGENCY ESCAPE ROUTE FROM OPERATOR’S CAB 4-473
4156 SLIP RING UNIT – MAINTENANCE 4-473
416EVERY 3000 OPERATING HOURS HOWEVER AT LEAST ONCE A YEAR 4-478
4161 SWING GEARS AND MOTOR ADAPTER HOUSING – CHANGE OIL 4-479
4162 TRAVEL GEARS, CHANGE OIL IN GEAR BOXES, BRAKE HOUSINGS AND MOTOR
ADAPTER HOUSINGS 4-487
4163 TRAVEL GEARS WITH PART NUMBER 924 800 40, CHANGE OIL IN GEAR BOXES AND
MOTOR ADAPTER HOUSINGS 4-491
4164 FINAL DRIVE HOUSINGS – CHANGE OIL 4-493
4165 PTO (PUMP DISTRIBUTOR GEAR) – CHANGE OIL 4-495
4166 FLEXIBLE COUPLING – VISUAL CHECK 4-497
417CRITICAL BOLT CONNECTIONS – EVERY 3000 OPERATING HOURS 4-498
4171 CRITICAL BOLT CONNECTIONS – CHECK TORQUE LOAD 4-499
4172 CHECKING THE STEEL STRUCTURES 4-537
418EVERY 6000 OPERATING HOURS OR ONCE A YEAR 4-538
4181 AUTOMATIC LUBRICATION SYSTEMS – REPLACE PUMP OUTLET GREASE
FILTERS 4-539
4182 HIGH PRESSURE FILTERS – REPLACE 4-541
419FIRE PREVENTION 4-542
4191 PRECAUTIONS 4-543
420WELD REPAIRS 4-544
4201 GENERAL PROTECTIVE MEASURES 4-545
4202 WELD REPAIRS ON MAJOR COMPONENTS OF THE EXCAVATOR 4-545
4203 PROTECTIVE MEASURES BEFORE STARTING WELD REPAIRS ON THE
UNDERCARRIAGE 4-547
4204 PROTECTIVE MEASURES BEFORE STARTING WELD REPAIRS ON THE LOADER
ATTACHMENT 4-549
4205 PROTECTIVE MEASURES BEFORE STARTING WELD REPAIRS ON THE
SUPERSTRUCTURE 4-551
4206 AFTER FINISHING THE WELD REPAIRS ON THE SUPERSTRUCTURE 4-555

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