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KOMATSU AVANCE WA50-3 SHOP MANUAL SEBM017803 – PDF DOWNLOAD
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Description
KOMATSU AVANCE WA50-3 SHOP MANUAL SEBM017803 – PDF DOWNLOAD
FILE DETAILS:
KOMATSU AVANCE WA50-3 SHOP MANUAL SEBM017803 – PDF DOWNLOAD
Language : English
Pages : 396
Downloadable : Yes
File Type : PDF
IMAGES PREVIEW OF THE MANUAL:
TABLE OF CONTENTS:
KOMATSU AVANCE WA50-3 SHOP MANUAL SEBM017803 – PDF DOWNLOAD
COVER............................................................................................ 1 CONTENTS......................................................................................... 2 01 GENERAL....................................................................................... 25 GENERAL ASSEMBLY DRAWING..................................................................... 26 SPECIFICATIONS............................................................................... 28 WEIGHT TABLE................................................................................. 31 LIST OF LUBRICANT AND WATER.................................................................. 32 10 STRUCTURE AND FUNCTION........................................................................ 34 POWER TRAIN.................................................................................. 35 POWER TRAIN SYSTEM........................................................................... 36 RADIATOR・OIL COOLER.......................................................................... 38 HST PIPING................................................................................... 40 HST HYDRAULIC CIRCUIT DIAGRAM................................................................ 41 MAIN PISTON PUMP............................................................................. 43 HIGH-PRESSURE RELIEF VALVE................................................................... 45 LOW-PRESSURE RELIEF VALVE.................................................................... 47 WORK EQUIPMENT・STEERING PUMP, HST CHARGE PUMP................................................ 48 CHARGE PUMP OIL FILTER....................................................................... 49 SPEED RELATED VALVE (DA VALVE)............................................................... 50 PISTON MOTOR................................................................................. 51 DIRECTIONAL SHUTTLE VALVE.................................................................... 53 SERVO VALVE.................................................................................. 54 INCHING VALVE................................................................................ 55 TRANSFER..................................................................................... 56 HST CONTROL.................................................................................. 57 AXLE......................................................................................... 59 DIFFERENTIAL................................................................................. 61 FINAL DRIVE.................................................................................. 64 AXLE MOUNT................................................................................... 66 CENTER HINGE PIN............................................................................. 67 TIRE・WHEEL................................................................................... 68 STEERING PIPING.............................................................................. 69 STEERING COLUMN.............................................................................. 70 PRIORITY VALVE............................................................................... 71 STEERING VALVE (ORBIT-ROLL).................................................................. 75 BRAKE, PARKING BRAKE CONTROL................................................................. 83 BRAKE (ALSO USED AS PARKING BRAKE)........................................................... 84 WORK EQUIPMENT PIPING........................................................................ 85 WORK EQUIPMENT HYDRAULIC SYSTEM DIAGRAM...................................................... 86 WORK EQUIPMENT HYDRAULIC CIRCUIT DIAGRAM..................................................... 87 WORK EQUIPMENT LEVER LINKAGE................................................................. 88 HYDRAULIC TANK............................................................................... 89 HYDRAULIC FILTER............................................................................. 90 MAIN CONTROL VALVE........................................................................... 91 WORK EQUIPMENT LINKAGE....................................................................... 98 BUCKET.......................................................................................100 BUCKET POSITIONER............................................................................101 PROXIMITY SWITCH.............................................................................102 ROPS CANOPY..................................................................................103 CENTRAL PANEL (CLUSTER GAUGE)................................................................104 ENGINE START CIRCUIT.........................................................................105 ENGINE STOP CIRCUIT..........................................................................105 PREHEATING CIRCUIT...........................................................................106 PARKING BRAKE CIRCUIT........................................................................107 20 TESTING AND ADJUSTING.........................................................................108 STANDARD VALUE TABLE FOR ENGINE..............................................................109 STANDARD VALUE TABLE FOR CHASSIS.............................................................111 TABLE OF TOOLS FOR TESTING, ADJUSTING, AND TROUBLESHOOTING...................................116 ADJUSTING VALVE CLEARANCE....................................................................117 MEASURING COMPRESSION PRESSURE...............................................................120 TESTING AND ADJUSTING FUEL INJECTION TIMING..................................................121 BLEEDING AIR FROM FUEL CIRCUIT...............................................................127 TESTING AND ADJUSTING FAN BELT TENSION.......................................................128 TESTING FOR ABNORMALITY IN FUEL LEVEL SENSOR.................................................130 MEASURING ACCELERATOR PEDAL..................................................................131 MEASURING OPERATING EFFORT, TRAVEL OF DIRECTIONAL LEVER......................................133 MEASURING STALL SPEED........................................................................134 MEASURING HST OIL PRESSURE...................................................................135 TESTING AND ADJUSTING STEERING WHEEL.........................................................136 MEASURING OPERATING TIME FOR STEERING WHEEL..................................................137 MEASURING STEERING PRESSURE..................................................................138 TESTING AND ADJUSTING BRAKE PEDAL............................................................139 MEASURING OPERATION EFFORT, TRAVEL OF BRAKE PEDAL............................................141 MEASURING BRAKE PERFORMANCE..................................................................142 MEASURING PARKING BRAKE PERFORMANCE..........................................................143 MEASURING BRAKE DISC WEAR....................................................................144 TESTING AND ADJUSTING INCHING VALVE LINKAGE..................................................145 MEASURING AND ADJUSTING WORK EQUIPMENT CONTROL LEVER.........................................146 MEASURING TRAVEL OF MAIN CONTROL VALVE SPOOL.................................................148 MEASURING WORK EQUIPMENT PRESSURE............................................................149 TESTING AND ADJUSTING BUCKET POSITIONER......................................................151 TROUBLESHOOTING..............................................................................153 POINTS TO REMEMBER WHEN TROUBLESHOOTING..................................................154 SEQUENCE OF EVENTS IN TROUBLESHOOTING....................................................155 POINTS TO REMEMBER WHEN CARRYING OUT MAINTENANCE.........................................156 CHECKS BEFORE TROUBLESHOOTING............................................................164 TROUBLESHOOTING OF ELECTRICAL SYSTEM.....................................................165 E-1 ENGINE DOES NOT START............................................................166 TROUBLESHOOTING HYDRAULIC SYSTEM (H MODE)................................................174 TROUBLESHOOTING......................................................................175 CHECKING MACHINE BEFORE TROUBLESHOOTING..............................................175 CHECKING HST BEFORE TROUBLESHOOTING..................................................176 H-1 IMPOSSIBLE TO TRAVEL IN EITHER DIRECTION (FORWARD OR REVERSE)....................178 H-2 IMPOSSIBLE TO TRAVEL IN ONE DIRECTION ONLY (EITHER FORWARD OR REVERSE)...........179 H-3 LACKS SPEED IN BOTH DIRECTIONS (FORWARD AND REVERSE).............................180 H-4 LACKS SPEED IN ONE DIRECTION ONLY (FORWARD OR REVERSE)...........................181 H-5 LACKS DRAWBAR PULL IN BOTH DIRECTIONS (FORWARD AND REVERSE)......................181 H-6 LACKS DRAWBAR PULL IN ONE DIRECTION ONLY (FORWARD OR REVERSE)....................182 H-7 ENGINE SPEED IS HIGH WHEN STARTING IN BOTH DIRECTIONS (FORWARD AND REVERSE)......182 H-8 ENGINE SPEED IS HIGH WHEN STARTING IN ONE DIRECTION ONLY (FORWARD OR REVERSE)....182 30 DISASSEMBLY AND ASSEMBLY......................................................................183 HOW TO READ THIS MANUAL......................................................................184 PRECAUTIONS WHEN CARRYING OUT OPERATION......................................................186 SPECIAL TOOLS LIST...........................................................................188 REMOVAL OF FUEL INJECTION PUMP ASSEMBLY......................................................189 INSTALLATION OF FUEL INJECTION PUMP ASSEMBLY.................................................190 REMOVAL OF ENGINE ASSEMBLY...................................................................191 INSTALLATION OF ENGINE ASSEMBLY..............................................................197 REMOVAL OF ENGINE ASSEMBLY...................................................................205 INSTALLATION OF ENGINE ASSEMBLY..............................................................212 REMOVAL OF RADIATOR..........................................................................221 INSTALLATION OF RADIATOR.....................................................................223 REMOVAL OF RADIATOR..........................................................................225 INSTALLATION OF RADIATOR.....................................................................228 REMOVAL OF FUEL TANK.........................................................................230 INSTALLATION OF FUEL TANK....................................................................230 REMOVAL OF MAIN PISTON PUMP ASSEMBLY.........................................................231 INSTALLATION OF MAIN PISTON PUMP ASSEMBLY....................................................236 DISASSEMBLY OF MAIN PISTON PUMP ASSEMBLY.....................................................240 ASSEMBLY OF MAIN PISTON PUMP ASSEMBLY........................................................242 REMOVAL OF PISTON MOTOR ASSEMBLY.............................................................244 INSTALLATION OF PISTON MOTOR ASSEMBLY........................................................246 DISASSEMBLY OF PISTON MOTOR ASSEMBLY.........................................................248 ASSEMBLY OF PISTON MOTOR ASSEMBLY............................................................249 REMOVAL OF ENGINE AND TRANSFER ASSEMBLIES....................................................250 INSTALLATION OF ENGINE AND TRANSFER ASSEMBLY.................................................256 REMOVAL OF ENGINE AND TRANSFER ASSEMBLIES....................................................263 INSTALLATION OF ENGINE AND TRANSFER ASSEMBLIES...............................................270 DISASSEMBLY OF TRANSFER......................................................................278 ASSEMBLY OF TRANSFER ASSEMBLY................................................................281 DISASSEMBLY OF DRIVE SHAFT...................................................................285 ASSEMBLY OF DRIVE SHAFT......................................................................286 REMOVAL OF FRONT AXLE........................................................................287 INSTALLATION OF FRONT AXLE...................................................................288 REMOVAL OF REAR AXLE.........................................................................289 INSTALLATION OF REAR AXLE....................................................................292 DISASSEMBLY OF DIFFERENTIALS.................................................................295 ASSEMBLY OF DIFFERENTIAL.....................................................................298 DISASSEMBLY OF AXLE HOUSINGS.................................................................309 ASSEMBLY OF AXLE HOUSING.....................................................................314 REMOVAL OF CENTER HINGE PIN..................................................................320 INSTALLATION OF CENTER HINGE PIN.............................................................327 REMOVAL OF STEERING VALVE....................................................................337 INSTALLATION OF STEERING VALVE...............................................................337 DISASSEMBLY OF STEERING VALVE................................................................338 DISASSEMBLY OF RELIEF VALVE HOUSING SIDE OF STEERING VALVE...................................346 ASSEMBLY OF RELIEF VALVE HOUSING SIDE OF STEERING VALVE......................................347 REMOVAL OF STEERING CYLINDER.................................................................348 INSTALLATION OF STEERING CYLINDER............................................................348 REMOVAL OF PARKING BRAKE.....................................................................349 INSTALLATION OF PARKING BRAKE................................................................351 REMOVAL OF HYDRAULIC TANK....................................................................354 INSTALLATION OF HYDRAULIC TANK...............................................................354 REMOVAL OF WORK EQUIPMENT VALVE..............................................................355 INSTALLATION OF WORK EQUIPMENT VALVE.........................................................355 REMOVAL OF BUCKET CYLINDER...................................................................356 INSTALLATION OF BUCKET CYLINDER..............................................................356 REMOVAL OF BOOM CYLINDER.....................................................................357 INSTALLATION OF BOOM CYLINDER................................................................357 DISASSEMBLY OF HYDRAULIC CYLINDER ASSEMBLIES.................................................358 ASSEMBLY OF HYDRAULIC CYLINDER ASSEMBLIES....................................................360 REMOVAL OF WORK EQUIPMENT....................................................................362 INSTALLATION OF WORK EQUIPMENT...............................................................365 REMOVAL OF COUNTERWEIGHT.....................................................................368 INSTALLATION OF COUNTERWEIGHT................................................................368 REMOVAL OF INSTRUMENTS PANEL.................................................................369 INSTALLATION OF INSTRUMENTS PANEL............................................................369 40 MAINTENANCE STANDARD..........................................................................370 TRANSMISSION・ENGINE MOUNT....................................................................371 WORK EQUIPMENT・STEERING PUMP, HST CHARGE PUMP................................................372 TRANSFER.....................................................................................373 HST INCHING VALVE............................................................................375 DRIVE SHAFT..................................................................................376 DIFFERENTIAL (1/2) ..........................................................................377 DIFFERENTIAL (2/2)...........................................................................378 FINAL DRIVE..................................................................................380 AXLE MOUNT...................................................................................381 CENTER HINGE PIN.............................................................................382 STEERING COLUMN..............................................................................383 PRIORITY VALVE...............................................................................384 STEERING CYLINDER MOUNT......................................................................385 BRAKE........................................................................................386 HYDRAULIC CYLINDER...........................................................................387 WORK EQUIPMENT LINKAGE.......................................................................389 BUCKET.......................................................................................391 BUCKET POSITIONER............................................................................392 90 OTHERS........................................................................................393 ELECTRIC CIRCUIT DIAGRAM.....................................................................394
DESCRIPTION:
KOMATSU AVANCE WA50-3 SHOP MANUAL SEBM017803 – PDF DOWNLOAD
GENERAL
This shop manual has been prepared as an aid to improve the quality of repairs by giving the serviceman an accurate understanding of the product and by showing him the correct way to perform repairs and make judgements. Make sure you understand the contents of this manual and use it to full effect at every opportunity.
This shop manual mainly contains the necessary technical information for operations performed in a service workshop. For ease of understanding, the manual is divided into the following chapters; these chapters are further divided into the each main group of components.
STRUCTURE AND FUNCTION
This section explains the structure and function of each component. It serves not only to give an understanding of the structure, but also serves as reference material for troubleshooting. In addition, this section may contain hydraulic circuit diagrams, electric circuit diagrams, and maintenance standards.
TESTING AND ADJUSTING
This section explains checks to be made before and after performing repairs, as well as adjustments to be made at completion of the checks and repairs. Troubleshooting charts correlating “Problems” with “Causes” are also included in this section.
DISASSEMBLY AND ASSEMBLY
This section explains the procedures for removing, installing, disassembling and assembling each component, as well as precautions for them.
MAINTENANCE STANDARD
This section gives the judgment standards for inspection of disassembled parts. The contents of this section may be described in STRUCTURE AND FUNCTION.
OTHERS
This section mainly gives hydraulic circuit diagrams and electric circuit diagrams. In addition, this section may give the specifications of attachments and options together.
S.S 25/12/24
