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KOMATSU PC270-8 PC270LC-8 HYDRAULIC EXCAVATOR SHOP MANUAL SEN00420-15 – PDF DOWNLOAD
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Description
KOMATSU PC270-8 PC270LC-8 HYDRAULIC EXCAVATOR SHOP MANUAL SEN00420-15 – PDF DOWNLOAD
FILE DETAILS:
KOMATSU PC270-8 PC270LC-8 HYDRAULIC EXCAVATOR SHOP MANUAL SEN00420-15 – PDF DOWNLOAD
Language : English
Pages : 1091
Downloadable : Yes
File Type : PDF
IMAGES PREVIEW OF THE MANUAL:
TABLE OF CONTENTS:
KOMATSU PC270-8 PC270LC-8 HYDRAULIC EXCAVATOR SHOP MANUAL SEN00420-15 – PDF DOWNLOAD
Cover........................................................................................................ 1 00 Index and foreword........................................................................................ 0 Index.................................................................................................... 3 Composition of shop manual........................................................................... 0 Table of contents.................................................................................... 6 Foreword and general information......................................................................... 15 Safety notice........................................................................................ 16 How to read the shop manual.......................................................................... 21 Explanation of terms for maintenance standard........................................................ 23 Handling of electric equipment and hydraulic component............................................... 25 Handling of connectors newly used for engines........................................................ 34 How to read electric wire code....................................................................... 37 Precautions when carrying out operation.............................................................. 40 Method of disassembling and connecting push-pull type coupler........................................ 43 Standard tightening torque table..................................................................... 46 Conversion table..................................................................................... 50 01 Specification............................................................................................. 0 Specification and technical data......................................................................... 57 Specification dimension drawings..................................................................... 58 Working range diagram................................................................................ 59 Specifications....................................................................................... 60 Weight table......................................................................................... 62 Table of fuel, coolant and lubricants................................................................ 64 10 Structure, function and maintenance standard.............................................................. 0 Engine and cooling system................................................................................ 67 Engine and cooling system............................................................................ 68 Engine related parts............................................................................. 68 Radiator, oil cooler, aftercooler and fuel cooler................................................ 69 Power train.............................................................................................. 71 Power train.......................................................................................... 72 Final drive.......................................................................................... 74 Swing machinery...................................................................................... 76 Swing circle......................................................................................... 78 Undercarriage and frame.................................................................................. 81 Undercarriage and frame.............................................................................. 82 Track frame and recoil spring.................................................................... 82 Idler............................................................................................ 84 Carrier roller................................................................................... 86 Track roller..................................................................................... 87 Track shoe....................................................................................... 88 Hydraulic system, Part 1................................................................................. 93 Hydraulic system, Part 1............................................................................. 94 Hydraulic equipment layout drawing............................................................... 94 Hydraulic tank and filter........................................................................ 96 Hydraulic pump................................................................................... 98 Pilot oil filter................................................................................. 120 Hydraulic system, Part 2................................................................................. 123 Hydraulic system, Part 2............................................................................. 124 Control valve.................................................................................... 124 CLSS............................................................................................. 135 Functions and operation by valve................................................................. 140 Hydraulic system, Part 3................................................................................. 179 Swing motor.......................................................................................... 180 Valve control........................................................................................ 228 Solenoid valve....................................................................................... 230 PPC accumulator...................................................................................... 232 Anti-drop valve for boom............................................................................. 234 Anti-drop valve for arm.............................................................................. 240 Return oil filter.................................................................................... 247 Attachment circuit selector valve.................................................................... 248 Hydraulic cylinder................................................................................... 250 Work equipment........................................................................................... 253 Work equipment....................................................................................... 254 Dimensions of components......................................................................... 254 Cab and its attachments.................................................................................. 261 Air conditioner piping............................................................................... 262 Electrical system........................................................................................ 265 Engine control....................................................................................... 266 Electrical control system............................................................................ 274 Monitor system....................................................................................... 297 Sensor............................................................................................... 324 KOMTRAX system....................................................................................... 327 20 Standard value table...................................................................................... 0 Standard service value table............................................................................. 331 Standard service value table......................................................................... 332 Standard value table for engine related parts.................................................... 332 Standard value table for chassis related parts................................................... 333 30 Testing and adjusting..................................................................................... 0 Testing and adjusting, Part 1............................................................................ 345 Testing and adjusting, Part 1........................................................................ 347 Tools for testing, adjusting, and troubleshooting................................................ 347 Sketch of special tool........................................................................... 351 Testing engine speed............................................................................. 352 Testing intake air pressure (boost pressure)..................................................... 353 Checking exhaust gas color....................................................................... 354 Adjusting valve clearance........................................................................ 355 Testing compression pressure..................................................................... 357 Testing blow-by pressure......................................................................... 359 Testing engine oil pressure...................................................................... 360 Handling fuel system parts....................................................................... 361 Releasing residual pressure from fuel system..................................................... 361 Testing fuel pressure............................................................................ 362 Testing fuel delivery, return and leak amount.................................................... 365 Bleeding air from fuel circuit................................................................... 368 Checking fuel circuit for leakage................................................................ 369 Checking and adjusting air conditioner compressor belt tension................................... 370 Replacing fan belt............................................................................... 371 Testing swing circle bearing clearance........................................................... 372 Checking and adjusting track shoe tension........................................................ 373 Testing and adjusting oil pressure in work equipment, swing, and travel circuits................. 375 Testing control circuit basic pressure........................................................... 378 Testing and adjusting oil pressure in pump PC control circuit.................................... 379 Testing and adjusting oil pressure in pump LS control circuit.................................... 382 Testing solenoid valve output pressure........................................................... 387 Testing PPC valve output pressure................................................................ 390 Adjusting play of work equipment and swing PPC valves............................................ 392 Checking parts which cause hydraulic drift of work equipment..................................... 393 Releasing residual pressure from hydraulic circuit............................................... 395 Testing oil leakage.............................................................................. 396 Bleeding air from each part...................................................................... 399 Checking cab tipping stopper..................................................................... 401 Installation and adjustment of mirrors........................................................... 402 Testing and adjusting, Part 2............................................................................ 407 Special functions of machine monitor................................................................. 408 Testing and adjusting, Part 3............................................................................ 465 Testing and adjusting, Part 3........................................................................ 466 Handling voltage circuit of engine controller.................................................... 466 Preparation work for troubleshooting of electrical system........................................ 467 Procedure for testing diodes..................................................................... 472 Pm Clinic service................................................................................ 473 40 Troubleshooting........................................................................................... 0 Failure code table and fuse locations.................................................................... 481 Failure codes table.................................................................................. 482 Fuse locations....................................................................................... 487 General Information on troubleshooting................................................................... 493 General information on troubleshooting............................................................... 494 Points to remember when troubleshooting.......................................................... 494 Sequence of events in troubleshooting............................................................ 495 Check before troubleshooting..................................................................... 496 Classification and procedures for troubleshooting................................................ 497 How to read electric wire code................................................................... 501 Information in troubleshooting table............................................................. 504 Connection table for connector pin numbers....................................................... 506 T- branch box and T- branch adapter table........................................................ 542 Troubleshooting by failure code (Display of code), Part 1................................................ 547 Failure code [989L00] Engine Controller Lock Caution 1............................................... 550 Failure code [989M00] Engine Controller Lock Caution 2............................................... 550 Failure code [989N00] Engine Controller Lock Caution 3............................................... 551 Failure code [AA10NX] Air Cleaner Clogging........................................................... 551 Failure code [AB00KE] Charge Voltage Low............................................................. 552 Failure code [B@BAZG] Eng Oil Press. Low............................................................. 554 Failure code [B@BAZK] Eng Oil Level Low.............................................................. 554 Failure code [B@BCNS] Eng Water Overheat............................................................. 555 Failure code [B@BCZK] Eng Water Level Low............................................................ 555 Failure code [B@HANS] Hydr Oil Overheat.............................................................. 556 Failure code [CA111] EMC Critical Internal Failure................................................... 556 Failure code [CA115] Eng Ne and Bkup Speed Sens Error................................................ 557 Failure code [CA122] Chg Air Press Sensor High Error................................................. 558 Failure code [CA123] Chg Air Press Sensor Low Error.................................................. 560 Failure code [CA131] Throttle Sensor High Error...................................................... 562 Failure code [CA132] Throttle Sensor Low Error....................................................... 564 Failure code [CA144] Coolant Temp Sens High Error.................................................... 566 Failure code [CA145] Coolant Temp Sens Low Error..................................................... 568 Failure code [CA153] Chg Air Temp Sensor High Error.................................................. 570 Failure code [CA154] Chg Air Temp Sensor Low Error................................................... 572 Failure code [CA155] Chg Air Temp High Speed Derate.................................................. 574 Failure code [CA187] Sens Supply 2 Volt Low Error.................................................... 576 Failure code [CA221] Ambient Press Sens High Error................................................... 578 Failure code [CA222] Ambient Press Sens Low Error.................................................... 580 Failure code [CA227] Sens Supply 2 Volt High Error................................................... 582 Failure code [CA234] Eng Overspeed................................................................... 583 Failure code [CA238] Ne Speed Sens Supply Volt Error................................................. 584 Failure code [CA271] IMV/PCV1 Short Error............................................................ 585 Failure code [CA272] IMV/PCV1 Open Error............................................................. 586 Failure code [CA322] Inj #1 Open/Short Error......................................................... 588 Failure code [CA323] Inj #5 Open/Short Error......................................................... 590 Failure code [CA324] Inj #3 Open/Short Error......................................................... 592 Failure code [CA325] Inj #6 Open/Short Error......................................................... 594 Failure code [CA331] Inj #2 Open/Short Error......................................................... 596 Failure code [CA332] Inj #4 Open/Short Error......................................................... 598 Troubleshooting by failure code (Display of code), Part 2................................................ 601 Troubleshooting by failure code (Display of code), Part 2............................................ 603 Failure code [CA342] Calibration Code Incompatibility............................................ 603 Failure code [CA351] Injectors Drive Circuit Error............................................... 604 Failure code [CA352] Sens Supply 1 Volt Low Error................................................ 606 Failure code [CA386] Sens Supply 1 Volt High Error............................................... 608 Failure code [CA428] Water in Fuel Sensor High Error............................................. 610 Failure code [CA429] Water in Fuel Sensor Low Error.............................................. 612 Failure code [CA435] Eng Oil Press Sw Error...................................................... 614 Failure code [CA441] Battery Voltage Low Error................................................... 615 Failure code [CA442] Battery Voltage High Error.................................................. 618 Failure code [CA449] Rail Press Very High Error.................................................. 620 Failure code [CA451] Rail Press Sensor High Error................................................ 622 Failure code [CA452] Rail Press Sensor Low Error................................................. 624 Failure code [CA488] Chg Air Temp High Torque Derate............................................. 626 Failure code [CA553] Rail Press High Error....................................................... 627 Failure code [CA559] Rail Press Low Error........................................................ 628 Failure code [CA689] Eng Ne Speed Sensor Error................................................... 630 Failure code [CA731] Eng Bkup Speed Sens Phase Error............................................. 632 Failure code [CA757] All Continuous Data Lost E.................................................. 634 Failure code [CA778] Eng Bkup Speed Sensor Error................................................. 636 Failure code [CA1633] KOMNET Datalink Timeout Error.............................................. 638 Failure code [CA2185] Throt Sens Sup Volt High Error............................................. 639 Failure code [CA2186] Throt Sens Sup Volt Low Error.............................................. 640 Failure code [CA2249] Rail Press Very Low Error.................................................. 641 Failure code [CA2311] IMV Solenoid Error......................................................... 642 Failure code [CA2555] Grid Htr Relay Volt High Error............................................. 644 Failure code [CA2556] Grid Htr Relay Volt Low Error.............................................. 646 Failure code [D19JKZ] Personal Code Relay Abnormality............................................ 648 Failure code [D862KA] GPS Antenna Discon......................................................... 650 Failure code [DA22KK] Pump Solenoid Power Low Error.............................................. 652 Failure code [DA25KP] 5V Sensor 1 Power Abnormality.............................................. 654 Failure code [DA29KQ] Model Selection Abnormality................................................ 660 Troubleshooting by failure code (Display of code), Part 3................................................ 663 Troubleshooting by failure code (Display of code), Part 3............................................ 665 Failure code [DA2RMC] CAN Discon (Pump Con Detected)............................................. 665 Failure code [DAF8KB] Short circuit in camera power supply....................................... 672 Failure code [DAFGMC] GPS Module Error........................................................... 674 Failure code [DAFRMC] CAN Discon (Monitor Detected).............................................. 675 Failure code [DGH2KB] Hydr Oil Sensor Short...................................................... 680 Failure code [DHPAMA] F Pump Press Sensor Abnormality............................................ 682 Failure code [DHPBMA] R Pump Press Sensor Abnormality............................................ 684 Failure code [DHS3MA] Arm Curl PPC Press Sensor Abnormality...................................... 686 Failure code [DHS4MA] Bucket Curl PPC Press Sensor Abnormality................................... 688 Failure code [DHS8MA] Boom Raise PPC Press Sensor Abnormality.................................... 690 Failure code [DHSAMA] Swing RH PPC Press Sensor Abnormality...................................... 692 Failure code [DHSBMA] Swing LH PPC Press Sensor Abnormality...................................... 694 Failure code [DHSDMA] Bucket Dump PPC Press Sensor Abnormality................................... 696 Failure code [DHX1MA] Overload Sensor Abnormality (Analog)....................................... 698 Failure code [DW43KA] Travel Speed Sol Discon.................................................... 702 Failure code [DW43KB] Travel Speed Sol Short..................................................... 704 Failure code [DW45KA] Swing Brake Sol Discon..................................................... 706 Failure code [DW45KB] Swing Brake Sol Short...................................................... 708 Failure code [DW91KA] Travel Junction Sol Discon................................................. 710 Failure code [DW91KB] Travel Junction Sol Short.................................................. 712 Failure code [DWA2KA] Service Sol Discon......................................................... 714 Failure code [DWA2KB] Service Sol Short.......................................................... 715 Failure code [DWK0KA] 2-stage Relief Sol Discon.................................................. 716 Failure code [DWK0KB] 2-stage Relief Sol Short................................................... 718 Troubleshooting by failure code (Display of code), Part 4................................................ 0 Troubleshooting by failure code (Display of code), Part 4............................................ 0 Failure code [DXA8KB] PC-EPC (F) Sol Short....................................................... 724 Failure code [DXA9KA] PC-EPC (R) Sol Discon...................................................... 726 Failure code [DXA9KB] PC-EPC (R) Sol Short....................................................... 728 Failure code [DXE0KA] LS-EPC Sol Discon.......................................................... 730 Failure code [DXE0KB] LS-EPC Sol Short........................................................... 732 Failure code [DXE4KA] Service Current EPC Discon................................................. 734 Failure code [DXE4KB] Service Current EPC Short.................................................. 736 Failure code [DXE5KA] Merge-divider Main Sol Discon.............................................. 738 Failure code [DXE5KB] Merge-divider Main Sol Short............................................... 740 Failure code [DXE6KA] Merge-divider LS Sol Discon................................................ 742 Failure code [DXE6KB] Merge-divider LS Sol Short................................................. 744 Failure code [DY20KA] Wiper Working Abnormality.................................................. 746 Failure code [DY20MA] Wiper Parking Abnormality.................................................. 748 Failure code [DY2CKA] Washer Drive Discon........................................................ 750 Failure code [DY2CKB] Washer Drive Short......................................................... 752 Failure code [DY2DKB] Wiper Drive (For) Short.................................................... 754 Failure code [DY2EKB] Wiper Drive (Rev) Short.................................................... 756 Troubleshooting of electrical system (E-mode)............................................................ 759 Troubleshooting of electrical system (E-mode)........................................................ 761 Before carrying out troubleshooting of electrical system......................................... 761 Information in troubleshooting table............................................................. 763 E-1 When starting switch turned ON, machine monitor displays nothing............................. 764 E-2 When starting switch turned ON (before starting engine), basic check item lights up.......... 766 E-3 Engine does not start (Engine does not turn)................................................. 769 E-4 Preheater does not operate................................................................... 773 E-5 Automatic warm-up system does not operate (in cold season)................................... 777 E-6 All work equipment, swing, and travel mechanism do not move or cannot be locked.............. 778 E-7 Precaution lights up while engine is running................................................. 780 E-8 Emergency stop item lights up while engine is running........................................ 785 E-9 Engine coolant temperature gauge does not indicate normally.................................. 786 E-10 Hydraulic oil temperature gauge does not indicate correctly................................. 787 E-11 Fuel level gauge does not indicate correctly................................................ 790 E-12 Contents of display by machine monitor are different from applicable machine................ 792 E-13 Machine monitor does not display some items................................................. 792 E-14 Function switch does not work............................................................... 792 E-15 Auto-decelerator does not operate normally.................................................. 793 E-16 Working mode does not change................................................................ 794 E-17 Travel speed does not change................................................................ 795 E-18 Alarm buzzer cannot be stopped.............................................................. 796 E-19 Windshield wiper and window washer do not operate........................................... 797 E-20 Power maximizing function does not operate normally......................................... 799 E-21 Swing holding brake does not operate normally............................................... 801 E-22 Travel alarm does not sound or does not stop sounding....................................... 803 E-23 Air conditioner does not operate normally (including air conditioner abnormality record).... 805 E-24 While starting switch is in OFF position, service meter is not displayed.................... 817 E-25 Machine monitor cannot be set in service mode............................................... 817 E-26 Monitoring function does not display lever control signal normally.......................... 818 E-27 KOMTRAX system does not operate normally.................................................... 826 Troubleshooting of hydraulic and mechanical system (H-mode).............................................. 829 Troubleshooting of hydraulic and mechanical system (H-mode).......................................... 832 System diagram of hydraulic and mechanical system................................................ 832 Information in troubleshooting table............................................................. 834 H-1 Speed or power of whole work equipment, swing, and travel is low............................. 835 H-2 Engine speed lowers extremely or engine stalls............................................... 837 H-3 Work equipment, swing, and travel systems do not work........................................ 838 H-4 Abnormal sound comes out from around hydraulic pump.......................................... 838 H-5 Auto-decelerator does not operate............................................................ 839 H-6 Fine control performance or response is low.................................................. 839 H-7 Speed or power of boom is low................................................................ 840 H-8 Speed or power of arm is low................................................................. 841 H-9 Speed or power of bucket is low.............................................................. 842 H-10 Work equipment does not move singly......................................................... 842 H-11 Hydraulic drift of work equipment is large.................................................. 843 H-12 Time lag of work equipment is large......................................................... 845 H-13 When part of work equipment is relieved singly, other parts of work equipment move.......... 845 H-14 Power maximizing function does not work..................................................... 846 H-15 In compound operation of work equipment, speed of part loaded more is low................... 846 H-16 When machine swings and raises boom simultaneously, boom rising speed is low................ 847 H-17 When machine swings and travels simultaneously, travel speed is low......................... 847 H-18 Machine deviates during travel.............................................................. 848 H-19 Travel speed is low......................................................................... 849 H-20 Machine is not steered well or steering power is low........................................ 850 H-21 Travel speed does not change or travel speed is low/high.................................... 851 H-22 Travel system does not move (only one side)................................................. 852 H-23 Upper structure does not swing.............................................................. 853 H-24 Swing acceleration or swing speed is low.................................................... 855 H-25 Upper structure overruns remarkably when it stops swinging.................................. 856 H-26 Large shock is made when upper structure stops swinging..................................... 857 H-27 Large sound is made when upper structure stops swinging..................................... 857 H-28 Hydraulic drift of swing is large........................................................... 858 H-29 Attachment circuit is not changed........................................................... 859 H-30 Oil flow in attachment circuit cannot be controlled......................................... 859 Troubleshooting of engine (S-mode)....................................................................... 861 Troubleshooting of engine (S-mode)................................................................... 864 Method of using troubleshooting chart............................................................ 864 S-1 Starting performance is poor................................................................. 868 S-2 Engine does not start........................................................................ 869 S-3 Engine does not pick up smoothly............................................................. 872 S-4 Engine stops during operations............................................................... 873 S-5 Engine does not rotate smoothly.............................................................. 874 S-6 Engine lack output (or lacks power).......................................................... 875 S-7 Exhaust smoke is black (incomplete combustion)............................................... 876 S-8 Oil consumption is excessive (or exhaust smoke is blue)...................................... 877 S-9 Oil becomes contaminated quickly............................................................. 878 S-10 Fuel consumption is excessive............................................................... 879 S-11 Oil is in coolant (or coolant spurts back or coolant level goes down)....................... 880 S-12 Oil pressure drops.......................................................................... 881 S-13 Oil level rises (Entry of coolant/fuel)..................................................... 882 S-14 Coolant temperature becomes too high (overheating).......................................... 883 S-15 Abnormal noise is made...................................................................... 884 S-16 Vibration is excessive...................................................................... 885 50 Disassembly and assembly.................................................................................. 0 General information on disassembly and assembly.......................................................... 887 How to read this manual.............................................................................. 888 Coating materials list............................................................................... 890 Special tools list................................................................................... 893 Sketches of special tools............................................................................ 897 Engine and cooling system................................................................................ 903 Removal and installation of fuel supply pump assembly................................................ 904 Removal and installation of fuel injector assembly................................................... 908 Removal and installation of engine front seal........................................................ 917 Removal and installation of engine rear seal......................................................... 920 Removal and installation of cylinder head assembly................................................... 923 Removal and installation of radiator assembly........................................................ 937 Removal and installation of hydraulic oil cooler assembly............................................ 940 Removal and installation of aftercooler assembly..................................................... 942 Removal and installation of fuel cooler assembly..................................................... 944 Removal and installation of engine and hydraulic pump assembly....................................... 945 Power train.............................................................................................. 955 Removal and installation of final drive assembly..................................................... 956 Disassembly and assembly of final drive assembly..................................................... 957 Removal and installation of swing motor and swing machinery assembly................................. 966 Disassembly and assembly of swing motor and swing machinery assembly................................. 968 Removal and installation of swing circle assembly.................................................... 977 Undercarriage and frame.................................................................................. 979 Disassembly and assembly of carrier roller assembly.................................................. 980 Disassembly and assembly of track roller assembly.................................................... 981 Disassembly and assembly of idler assembly........................................................... 982 Disassembly and assembly of recoil spring assembly................................................... 985 Removal and installation of sprocket................................................................. 987 Expansion and installation of track shoe assembly.................................................... 988 Removal and installation of revolving frame assembly................................................. 990 Removal and installation of counterweight assembly................................................... 992 Hydraulic system......................................................................................... 995 Removal and installation of center swivel joint assembly............................................. 996 Disassembly and assembly of center swivel joint assembly............................................. 998 Removal and installation of hydraulic tank assembly.................................................. 999 Removal and installation of control valve assembly...................................................1003 Disassembly and assembly of control valve assembly...................................................1008 Removal and installation of hydraulic main pump assembly.............................................1012 Removal and installation of oil seal in hydraulic pump input shaft...................................1016 Disassembly and assembly of work equipment PPC valve assembly........................................1017 Disassembly and assembly of travel PPC valve assembly................................................1019 Disassembly and assembly of hydraulic cylinder assembly..............................................1022 Work equipment...........................................................................................1030 Removal and installation of work equipment assembly..................................................1030 Removal and installation of anti- drop valve assembly for boom.......................................1033 Removal and installation of anti- drop valve assembly for arm........................................1036 Disassembly and assembly of anti-drop valve assembly.................................................1038 Cab and its attachments..................................................................................1041 Removal and installation of operator's cab assembly..................................................1042 Removal and installation of operator cab glass (stuck glass).........................................1045 Removal and installation of front window assembly....................................................1055 Removal and installation of floor frame assembly.....................................................1062 Electrical system........................................................................................1067 Removal and installation of air conditioner unit assembly............................................1068 Removal and installation of KOMTRAX communication modem assembly.....................................1071 Removal and installation of monitor assembly.........................................................1072 Removal and installation of pump controller assembly.................................................1074 90 Diagrams and drawings..................................................................................... 0 Hydraulic diagrams and drawings..........................................................................1077 Hydraulic circuit diagram ...........................................................................1079 Electrical diagrams and drawings.........................................................................1082 Electrical circuit diagram...........................................................................1084 Connector arrangement diagram........................................................................1089
DESCRIPTION:
KOMATSU PC270-8 PC270LC-8 HYDRAULIC EXCAVATOR SHOP MANUAL SEN00420-15 – PDF DOWNLOAD
General precautions
1) Before carrying out any greasing or repairs, read all the safety labels stuck to the machine. For the locations of the safety labels and detailed explanation of precautions, see the Operation and Maintenance Manual.
2) Decide a place in the repair workshop to keep tools and removed parts. Always keep the tools and parts in their correct places. Always keep the work area clean and make sure that there is no dirt, water, or oil on the floor. Smoke only in the areas provided for smoking. Never smoke while working.
3) When carrying out any operation, always wear safety shoes and helmet. Do not wear loose work clothes, or clothes with buttons missing.
A Always wear safety glasses when hitting parts with a hammer.
B. Always wear safety glasses when grinding parts with a grinder, etc.
4) When carrying out any operation with 2 or more workers, always agree on the operating procedure before starting. Always inform your fellow workers before starting any step of the operation. Before starting work, hang UNDER REPAIR warning signs in the operator’s compartment.
5) Only qualified workers must carry out work and operation which require license or qualification.
6) Keep all tools in good condition, learn the correct way to use them, and use the proper ones of them. Before starting work, thoroughly check the tools, machine, forklift, service car, etc.
7) If welding repairs are needed, always have a trained and experienced welder carry out the work. When carrying out welding work, always wear welding gloves, apron, shielding goggles, cap and other clothes suited for welding work.
8) Before starting work, warm up your body thoroughly to start work under good condition.
9) Avoid continuing work for long hours and take rests at proper intervals to keep your body in good condition. Take rests in specified safe places.
S.S 29/12/24
