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KOMATSU FH40-1 FH45-1 FH50-1 FH SERIES FORKLIFT TRUCK SERVICE MANUAL – PDF DOWNLOAD
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Description
KOMATSU FH40-1 FH45-1 FH50-1 FH SERIES FORKLIFT TRUCK SERVICE MANUAL – PDF DOWNLOAD
FILE DETAILS:
KOMATSU FH40-1 FH45-1 FH50-1 FH SERIES FORKLIFT TRUCK SERVICE MANUAL – PDF DOWNLOAD
Language : English
Pages : 858
Downloadable : Yes
File Type : PDF
IMAGES PREVIEW OF THE MANUAL:
TABLE OF CONTENTS:
KOMATSU FH40-1 FH45-1 FH50-1 FH SERIES FORKLIFT TRUCK SERVICE MANUAL – PDF DOWNLOAD
CONTENTS................................................................................................................................................................. 3 00 Foreword.............................................................................................................................................................. 13 Safety notice........................................................................................................................................................ 15 How to read the shop manual.......................................................................................................................................... 26 Explanation of terms for maintenance standard........................................................................................................................ 28 Handling of electric equipment and hydraulic component............................................................................................................... 30 Handling of connectors newly used for engines........................................................................................................................ 39 How to read electric wire code....................................................................................................................................... 42 Precautions when carrying out operation.............................................................................................................................. 45 Standard tightening torque table..................................................................................................................................... 48 Conversion table..................................................................................................................................................... 52 01 General Information................................................................................................................................................... 57 Table of Contents.................................................................................................................................................... 58 Specifications....................................................................................................................................................... 59 Specification dimensions drawing................................................................................................................................. 59 Weight table..................................................................................................................................................... 61 Lubricant list................................................................................................................................................... 62 List of specified fuel and lubricant............................................................................................................................. 63 10 Structure, function and maintenance standard.......................................................................................................................... 65 Table of Contents.................................................................................................................................................... 67 Engine and cooling system............................................................................................................................................ 69 Engine mount and transfer mount.................................................................................................................................. 69 Cooling system................................................................................................................................................... 70 Power train.......................................................................................................................................................... 72 Power train...................................................................................................................................................... 72 Power train system diagram....................................................................................................................................... 73 PTO.............................................................................................................................................................. 74 HST piping diagram............................................................................................................................................... 77 HST pump......................................................................................................................................................... 78 HST motor........................................................................................................................................................ 90 Axle.............................................................................................................................................................100 Differential.....................................................................................................................................................101 Steering system......................................................................................................................................................107 Steering piping diagram (control valve - power steering cylinder)................................................................................................107 Orbitrol valve...................................................................................................................................................108 Power steering cylinder..........................................................................................................................................110 Brake system.........................................................................................................................................................111 Brake control....................................................................................................................................................111 Brake piping diagram (control valve - accumulator)...............................................................................................................112 Service brake....................................................................................................................................................113 Accumulator charge valve.........................................................................................................................................115 Brake valve......................................................................................................................................................120 Slack adjuster...................................................................................................................................................123 Accumulator (for brake)..........................................................................................................................................127 Parking brake....................................................................................................................................................128 Undercarriage and frame..............................................................................................................................................129 Rear axle........................................................................................................................................................129 Hydraulic tank piping diagram....................................................................................................................................130 Frame............................................................................................................................................................131 Hydraulic system.....................................................................................................................................................132 Control valve piping diagram (tank - control valve)..............................................................................................................132 Work equipment piping diagram (control valve - tilt cylinder/lift cylinder)......................................................................................133 Attachment piping diagram........................................................................................................................................134 Work equipment control lever linkage.............................................................................................................................135 Work equipment and steering pump.................................................................................................................................136 Control valve....................................................................................................................................................144 CLSS.............................................................................................................................................................150 Each function and operation of each valve........................................................................................................................152 Work equipment.......................................................................................................................................................167 Tilt cylinder....................................................................................................................................................167 Electrical system....................................................................................................................................................168 Electrical control system........................................................................................................................................168 HST controller...................................................................................................................................................190 Engine controller................................................................................................................................................192 Accelerator pedal sensor.........................................................................................................................................194 EPACS controller.................................................................................................................................................195 Instrument panel.................................................................................................................................................197 Pilot box........................................................................................................................................................199 DC/DC converter..................................................................................................................................................200 KOMTRAX system...................................................................................................................................................201 Sensor...........................................................................................................................................................204 Combination switch...............................................................................................................................................214 Seat switch......................................................................................................................................................215 Service switch/Preheater lamp....................................................................................................................................216 Flasher unit.....................................................................................................................................................217 Relay box........................................................................................................................................................218 Relay............................................................................................................................................................219 20 Standard value table..................................................................................................................................................221 Standard value table.................................................................................................................................................223 30 Testing and adjusting.................................................................................................................................................225 Table of Contents....................................................................................................................................................226 Testing and adjusting................................................................................................................................................227 Check of failure code of engine controller.......................................................................................................................227 Displaying, setting, checking by using HST controller............................................................................................................230 Travel speed control function for general operator...............................................................................................................232 Setting controlled travel speed..................................................................................................................................233 Maximum travel speed control function............................................................................................................................235 Banning function of changing controlled travel speed.............................................................................................................238 Electrical-system abnormality record display function............................................................................................................240 Mechanical-system abnormality record display function............................................................................................................246 Adjusting function...............................................................................................................................................247 Memory clear function............................................................................................................................................254 Automatic engine stop set interval changing function.............................................................................................................257 Releasing pressure from hydraulic piping.........................................................................................................................259 Replacement of engine oil and engine oil filter..................................................................................................................260 Replacement of fuel filter.......................................................................................................................................262 Fuel pre-filter water drain......................................................................................................................................264 Fuel filter air bleeding.........................................................................................................................................265 Radiator cleaning................................................................................................................................................266 Air cleaner inspection and element replacement...................................................................................................................267 Testing and adjusting engine speed...............................................................................................................................268 Testing and adjusting HST oil pressure...........................................................................................................................270 Testing work equipment and steering pump oil pressure............................................................................................................273 Oil level check and changing oil in differential case............................................................................................................274 Changing PTO oil and cleaning strainer...........................................................................................................................275 Inspection of hydraulic tank.....................................................................................................................................276 Measuring brake performance......................................................................................................................................278 Measurement of wear of service brake disc........................................................................................................................279 Checking parking brake...........................................................................................................................................280 Bleeding air.....................................................................................................................................................281 Adjusting brake pedal............................................................................................................................................282 Testing and adjusting brake pedal angle sensor linkage...........................................................................................................283 Initial setting of Orbitrol valve................................................................................................................................285 Measurement of hydraulic drift and forward tilt down by hydraulic drift of cylinder..............................................................................286 Lamp display of KOMTRAX terminal.................................................................................................................................287 KOMTRAX terminal start-up procedure..............................................................................................................................290 40 Troubleshooting.......................................................................................................................................................295 Table of Contents....................................................................................................................................................296 Information related to troubleshooting...............................................................................................................................299 Points to remember when troubleshooting..........................................................................................................................299 How to proceed in troubleshooting................................................................................................................................300 Checks before troubleshooting....................................................................................................................................301 Classification and procedures of troubleshooting.................................................................................................................302 Phenomena seemed to be failures and troubleshooting Nos..........................................................................................................303 Information described in troubleshooting table...................................................................................................................306 Locations of fuses...............................................................................................................................................311 Connection table for connector pin numbers.......................................................................................................................314 T-branch box and T-branch adapter table..........................................................................................................................354 Troubleshooting by failure code (HST controller system)..............................................................................................................357 Failure code list................................................................................................................................................357 Failure code [--/AB00MA] Alternator: Malfunction.................................................................................................................360 Failure code [--/B@CRNS] HST Oil: Overheating....................................................................................................................361 Failure code [--/2G40ZG] Brake accumulator: Dropped hydraulic pressure...........................................................................................362 Failure code [--/6091NX] HST oil filter: Clogging................................................................................................................363 Failure code [12/DDK6KA] FNR lever: Open circuit.................................................................................................................364 Failure code [12/DDK6KY] FNR lever: Hot short circuit............................................................................................................366 Failure code [14/DLT4KZ] Travel speed sensor A: Open circuit, ground fault, or hot short circuit.................................................................368 Failure code [14/DLT6KZ] Travel speed sensor B: Open circuit, ground fault, or hot short circuit.................................................................370 Failure code [14/DLT4KZ+DLT6KZ] Travel speed sensors A and B: Open circuit, ground fault, or hot short circuit...................................................372 Failure code [14/DLT4MA] Travel speed sensors A and B: Malfunction...............................................................................................374 Failure code [14/DLT4LC] Travel speed sensors A and B: Mismatch of rotation speed signals........................................................................375 Failure code [15/7REXKA] Seat switch: Open circuit...............................................................................................................376 Failure code [15/7REXKB] Seat switch: Ground fault...............................................................................................................378 Failure code [18/D5ZTKZ] Pump EPC valve ground return signal: Open circuit or hot short circuit..................................................................380 Failure code [22/DHHBKX] HST pump A-port pressure sensor: Open circuit or ground fault...........................................................................382 Failure code [22/DHHBKY] HST pump A-port pressure sensor: Hot short circuit......................................................................................384 Failure code [23/DHHCKX] HST pump B-port pressure sensor: Open circuit or ground fault...........................................................................386 Failure code [23/DHHCKY] HST pump B-port pressure sensor: Hot short circuit......................................................................................388 Failure code [25/DK70KZ] Brake pedal angle sensor: Open circuit or ground fault..................................................................................390 Failure code [25/DK70KY] Brake pedal angle sensor: Hot short circuit.............................................................................................392 Failure code [26/DGS1KA] HST oil temperature sensor: Open circuit................................................................................................394 Failure code [26/DGS1KB] HST oil temperature sensor: Ground fault................................................................................................396 Failure code [27/AB00KZ] Alternator R signal circuit: Open circuit or ground fault...............................................................................398 Failure code [27/AB00KY] Alternator R signal circuit: Hot short circuit..........................................................................................400 Failure code [28/DHPCKZ] Lift cylinder pressure sensor: Open circuit or ground fault.............................................................................402 Failure code [28/DHPCKY] Lift cylinder pressure sensor: Hot short circuit........................................................................................404 Failure code [29/DH2FKZ] Brake charge pressure sensor: Open circuit or ground fault..............................................................................406 Failure code [29/DH2FKY] Brake charge pressure sensor: Hot short circuit.........................................................................................408 Failure code [32/DXATKA] HST pump forward travel EPC solenoid valve: Open circuit................................................................................410 Failure code [32/DXATKB] HST pump forward travel EPC solenoid valve: Ground fault................................................................................412 Failure code [32/DXATKY] HST pump forward travel EPC solenoid valve: Hot short circuit...........................................................................414 Failure code [33/DXAUKA] HST pump reverse travel EPC solenoid valve: Open circuit................................................................................416 Failure code [33/DXAUKB] HST pump reverse travel EPC solenoid valve: Ground fault................................................................................418 Failure code [33/DXAUKY] HST pump reverse travel EPC solenoid valve: Hot short circuit...........................................................................420 Failure code [34/DXAVKA] HST motor EPC solenoid valve: Open circuit..............................................................................................422 Failure code [34/DXAVKB] HST motor EPC solenoid valve: Ground fault..............................................................................................424 Failure code [34/DXAVKY] HST motor EPC solenoid valve: Hot short circuit.........................................................................................426 Failure code [35/D110KZ] HST controller power relay: Open circuit or hot short circuit...........................................................................428 Failure code [35/D110KB] HST controller power relay: Ground fault................................................................................................430 Failure code [37/DW9NKA] Work equipment lock solenoid valve: Open circuit........................................................................................432 Failure code [37/DW9NKB] Work equipment lock solenoid valve: Ground fault........................................................................................434 Failure code [37/DW9NKY] Work equipment lock solenoid valve: Hot short circuit...................................................................................436 Failure code [38/DW9MKA] Lift lock solenoid valve: Open circuit..................................................................................................438 Failure code [38/DW9MKB] Lift lock solenoid valve: Ground fault..................................................................................................440 Failure code [38/DW9MKY] Lift lock solenoid valve: Hot short circuit.............................................................................................442 Failure code [39/D140KB] Starter relay: Ground fault.............................................................................................................444 Failure code [39/D140KY] Starter relay: Hot short circuit........................................................................................................446 Failure code [47/D161KA] Backup buzzer and backup lamp relay: Open circuit.......................................................................................448 Failure code [47/D161KB] Backup buzzer and backup lamp relay: Ground fault.......................................................................................450 Failure code [47/D161KY] Backup buzzer and backup lamp relay: Hot short circuit..................................................................................452 Failure code [48/DV00KB] Warning buzzer: Ground fault............................................................................................................454 Failure code [48/DV00KY] Warning buzzer: Hot short circuit.......................................................................................................456 Failure code [49/D19UKA] Pump EPC valve ground cutout relay: Open circuit........................................................................................458 Failure code [49/D19UKB] Pump EPC valve ground cutout replay: Ground fault.......................................................................................460 Failure code [49/D19UKY] Pump EPC valve ground cutout relay: Hot short circuit...................................................................................462 Failure code [52/DAJ0KK] HST controller: Drop of power voltage...................................................................................................464 Failure code [53/DAJ2KK] HST controller: Drop of load power supply voltage.......................................................................................466 Failure code [54/7REHKA] Accessory input circuit 2 (KEY_ACC_SIGNAL): Open circuit................................................................................468 Failure code [55/DAJ5KX] HST controller sensor 5 V-power supply: Ground fault or hot short circuit...............................................................470 Failure code [56/7REAKA] Accessory input circuit 1 (KEY_SIGNAL): Open circuit....................................................................................472 Failure code [62/DB2RKR] CAN communication (between HST controller and engine controller): Communication failure (Component system failure)......................474 Failure code [63/DAJ000] HST Controller: Memory error............................................................................................................476 Failure code [63/DAJ0KT] HST Controller: Memory error............................................................................................................476 Troubleshooting by failure code (EPACS controller system)............................................................................................................477 Display of EPACS controller failure code.........................................................................................................................477 Failure code [LED: OFF] EPACS controller abnormality.............................................................................................................478 Failure code [LED: 1 flashing] Initialization is not completed...................................................................................................479 Failure code [LED: 2 flashings] Controller is being initialized..................................................................................................480 Failure code [LED: 3 flashings] Steering wheel angle sensor abnormality..........................................................................................481 Failure code [LED: 4 flashings] Tire angle sensor abnormality....................................................................................................482 Troubleshooting for electrical system (E-mode).......................................................................................................................484 Information described in troubleshooting table...................................................................................................................484 E-1 Engine does not start........................................................................................................................................485 E-2 Engine preheater does not operate............................................................................................................................490 E-3 Parking brake reminder alarm does not sound or does not stop sounding........................................................................................492 E-4 EPACS is abnormal............................................................................................................................................494 E-5 Headlamp, clearance lamp, tail lamp and license plate lamp do not light up or go off.........................................................................497 E-6 Turn signal lamps do not light up or go off..................................................................................................................503 E-7 Brake lamps do not light up or go off........................................................................................................................506 E-8 Backup lamps do not light up or go off.......................................................................................................................508 E-9 Backup buzzer does not sound or does not stop sounding.......................................................................................................510 E-10 Horn does not sound or does not stop sounding...............................................................................................................512 E-11 Fuel level is not displayed normally........................................................................................................................514 E-12 Engine coolant temperature level is not displayed normally..................................................................................................516 E-13 All of indicator and warning lamps of instrument panel do not light up when starting switch is turned to the ON position....................................518 E-14 When starting switch is turned to the ON position, all of indicator and warning lamps of pilot box do not light up..........................................525 E-15 When starting switch is turned to the ON position, preheater lamp does not light up.........................................................................530 E-16 When starting switch is turned to the ON position, alarm buzzer does not sound..............................................................................532 E-17 ± Backup lamp of instrument panel does not light up.........................................................................................................534 E-18 Charge warning lamp lights up while engine is running.......................................................................................................536 E-19 HST oil temperature warning lamp lights up while engine is running..........................................................................................538 E-20 HST oil filter clogging warning lamp lights up while engine is running......................................................................................539 E-21 Engine oil pressure warning lamp lights up while engine is running..........................................................................................540 E-22 Sedimenter (water separator) warning lamp lights up while engine is running.................................................................................541 E-23 Abnormality warning lamp lights up while engine is running..................................................................................................542 E-24 Engine abnormality warning lamp lights up while engine is running...........................................................................................544 E-25 Travel speed restriction cannot be released or enabled......................................................................................................545 E-26 Impossible to select HST controller failure display mode, HST controller adjustment mode, speed limit setting mode, or engine stop time auto-change mode....547 E-27 ± KOMTRAX system does not operate normally..................................................................................................................550 Troubleshooting for hydraulic and mechanical system (H-mode).........................................................................................................552 How to use troubleshooting table.................................................................................................................................552 Hydraulic and mechanical system diagram..........................................................................................................................554 Table of failure modes and causes................................................................................................................................556 H-1 Lift truck cannot travel.....................................................................................................................................560 H-2 Slow travel speed............................................................................................................................................561 H-3 Insufficient towing force....................................................................................................................................562 H-4 Engine stops during traveling, or engine speed drops excessively.............................................................................................563 H-5 HST (hydraulic) oil temperature is too high..................................................................................................................564 H-6 Impossible steering..........................................................................................................................................565 H-7 Response is low during turning...............................................................................................................................566 H-8 Steering is heavy............................................................................................................................................567 H-9 Unstable during turning......................................................................................................................................568 H-10 When steering wheel is released it does not return to neutral or it rotates by itself.......................................................................569 H-11 Steering wheel is turned in reverse or it kicks (while work equipment is operated)..........................................................................569 H-12 Large shock is made when steering wheel is returned.........................................................................................................570 H-13 EPACS does not work.........................................................................................................................................571 H-14 Steering wheel vibrates.....................................................................................................................................572 H-15 Steering system makes abnormal sound........................................................................................................................572 H-16 Oil leaks from steering circuit.............................................................................................................................572 H-17 Service brake does not work or its performance is low.......................................................................................................573 H-18 Service brake is not reset or it drags......................................................................................................................574 H-19 Parking brake does not work or its performance is low.......................................................................................................575 H-20 Parking brake is not reset or it drags......................................................................................................................576 H-21 Abnormal noise around the work equipment or steering pump...................................................................................................577 H-22 Engine speed drops excessively or stops during work equipment operation or wheel steering...................................................................578 H-23 Fine control performance of entire work equipment is low or response is low.................................................................................579 H-24 Work equipment cannot be locked (and the equipment operates when operator leaves)...........................................................................580 H-25 Control valve lever does not move smoothly and it is heavy..................................................................................................581 H-26 Lift cylinder and fork do not lift..........................................................................................................................582 H-27 Lifting speed or power of lift cylinder and fork is insufficient............................................................................................583 H-28 Forklift speed lowers at specific height....................................................................................................................584 H-29 Lift cylinder natural drift is large........................................................................................................................585 H-30 Lift cylinders do not come down.............................................................................................................................586 H-31 Fork lowering speed is low or high or fine control performance is low or response is low....................................................................587 H-32 Mast does not tilt forward or backward......................................................................................................................588 H-33 Forward/backward tilting speed or force of mast is insufficient.............................................................................................589 H-34 Tilting speed lowers halfway................................................................................................................................590 H-35 Tilt cylinder natural forward drift is large................................................................................................................591 H-36 Mast is unstable during travel with load....................................................................................................................592 H-37 Work equipment is heavy when work equipment and steering are operated simultaneously........................................................................593 H-38 Steering is heavy when work equipment and steering are operated simultaneously..............................................................................594 50 Disassembly and assembly..............................................................................................................................................595 Table of Contents....................................................................................................................................................596 Related information on disassembly and assembly......................................................................................................................597 How to read this manual..........................................................................................................................................597 Coating materials list...........................................................................................................................................598 Special tools list...............................................................................................................................................601 How to use Loctite...............................................................................................................................................603 Engine and cooling system............................................................................................................................................604 Removal and installation of fuel supply pump assembly............................................................................................................604 Removal and installation of fuel injector assembly...............................................................................................................608 Removal and installation of cylinder head assembly...............................................................................................................612 Removal and installation of radiator assembly....................................................................................................................623 Removal and installation of aftercooler assembly.................................................................................................................625 Removal and installation of oil cooler assembly..................................................................................................................628 Removal and installation of engine and pump assembly.............................................................................................................629 Removal and installation of starting motor assembly..............................................................................................................637 Power train..........................................................................................................................................................640 Removal and installation of front axle and HST motor assembly....................................................................................................640 Disassembly and assembly of front axle assembly..................................................................................................................643 Removal and installation of PTO assembly.........................................................................................................................644 Disassembly and assembly of PTO assembly.........................................................................................................................645 Disassembly and assembly of differential assembly................................................................................................................648 Disassembly and assembly of axle housing assembly................................................................................................................661 Disassembly and assembly of parking brake assembly...............................................................................................................668 Disassembly and assembly of rear axle assembly...................................................................................................................669 Disassembly and assembly of power steering cylinder assembly.....................................................................................................672 Disassembly and assembly of brake pedal assembly.................................................................................................................674 Undercarriage and frame..............................................................................................................................................675 Removal and installation of counterweight assembly...............................................................................................................675 Removal and installation of head guard assembly..................................................................................................................677 Removal and installation of hood assembly........................................................................................................................681 Hydraulic system.....................................................................................................................................................683 Removal and installation of HST pump assembly....................................................................................................................683 Removal and installation of HST motor assembly...................................................................................................................687 Removal and installation of work equipment and steering pump assembly............................................................................................688 Removal and installation of control valve assembly...............................................................................................................690 Disassembly and assembly of control valve assembly...............................................................................................................692 Disassembly and assembly of orbitrol valve assembly..............................................................................................................698 Disassembly and assembly of tilt cylinder assembly...............................................................................................................705 Electrical system....................................................................................................................................................710 Removal and installation of engine controller assembly...........................................................................................................710 Removal and installation of HST controller assembly..............................................................................................................712 Removal and installation of KOMTRAX terminal assembly............................................................................................................713 Disassembly and assembly of combination switch assembly..........................................................................................................714 80 Yearly inspection criteria............................................................................................................................................715 Yearly inspection criteria...........................................................................................................................................717 90 Circuit diagrams......................................................................................................................................................737 Hydraulic Circuit Diagram............................................................................................................................................739 Electric circuit diagram (1/4).......................................................................................................................................741 Electric circuit diagram (2/4).......................................................................................................................................743 Electric circuit diagram (3/4).......................................................................................................................................745 Electric circuit diagram (4/4).......................................................................................................................................747 Connector list and layout............................................................................................................................................749 100 Masts & Work Equipment...............................................................................................................................................751 80D/100D/110D-MS 2-STAGE MASTS.......................................................................................................................................753 INTRODUCTION.....................................................................................................................................................754 INSTALLATION INSTRUCTIONS........................................................................................................................................755 PERIODIC MAINTENANCE.............................................................................................................................................760 TROUBLESHOOTING..................................................................................................................................................761 SERVICE..........................................................................................................................................................762 80D/100D/110D-MT 3-STAGE MASTS.......................................................................................................................................781 INTRODUCTION.....................................................................................................................................................782 INSTALLATION INSTRUCTIONS........................................................................................................................................783 PERIODIC MAINTENANCE.............................................................................................................................................798 TROUBLESHOOTING..................................................................................................................................................799 SERVICE..........................................................................................................................................................800 D-SERIES SIDESHIFTER.................................................................................................................................................827 E-SERIES SIDESHIFTER.................................................................................................................................................843
DESCRIPTION:
KOMATSU FH40-1 FH45-1 FH50-1 FH SERIES FORKLIFT TRUCK SERVICE MANUAL – PDF DOWNLOAD
General precautions
1) Before carrying out any greasing or repairs, read all the safety labels stuck to the lift truck. 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, lift truck, 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 working continuously for long hours and take rests at proper intervals to keep the good condition. Take rests in a fixed safe place
S.S 31/12/24
