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Komatsu H285S Hydraulic Shovel Shop Manual SN 78067 – PDF DOWNLOAD
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Komatsu H285S Hydraulic Shovel Shop Manual
SERIAL NUMBER : H285S 78067
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Description
Komatsu H285S Hydraulic Shovel Shop Manual
FILE DETAILS:
Komatsu H285S Hydraulic Shovel Shop Manual
Brands: Komatsu
Equipment Type: Hydraulic Shovel
Manuals Type: Shop Manual
Machine Model: H285S
Serial Number: 78067
Language: English
Pages: 752
File Format: Portable Document Format (PDF)
KOMATSU H285S HYDRAULIC SHOVEL SHOP MANUAL SN 78067 – PDF DOWNLOAD:
IMAGES PREVIEW OF THE MANUAL:
DESCRIPTION:
Komatsu H285S Hydraulic Shovel Shop Manual
FOREWORD:
With this service manual MANNESMANN DEMAG BAUMASCHINENM provides you wdth the description of the construction and the function of the major systems of the hydraulic excavator H 285.
The service manual consists of 3 sections:
Section 1 General View
Section 2 Functional Description. Inspections and Adjustments. He describe for you all functions and how to carry out the inspections and adjustments.
Section 3 Description of copponents This section is used to improve your knowledge and you will find descriptions of the components according to their task and functions.
TABLE OF CONTENTS:
Komatsu H285S Hydraulic Shovel Shop Manual
MAIN MENU................................................................................. 0 COVER..................................................................................... 1 FOREWORD.................................................................................. 3 LIST OF CONTENTS.......................................................................... 7 PART 1.................................................................................... 13 DIVISION OF MACHINE................................................................... 13 SUPERSTRUCTURE........................................................................ 15 UNDERCARRIAGE......................................................................... 17 EQUIPMENT............................................................................. 19 SPECIAL EQUIPMENT..................................................................... 21 TOOTH SYSTEMS......................................................................... 25 LUBRICATION........................................................................... 27 REFILLING UNIT........................................................................ 37 HYDRAULIC SYSTEM...................................................................... 39 CONTROL............................................................................... 43 CONTROL UNITS......................................................................... 45 FILTERS OF THE HYDRAULIC OIL.......................................................... 47 ASSEMBLING THE EXCAVATOR.............................................................. 49 PART 2.................................................................................... 77 LIST OF CONTENTS...................................................................... 77 HINTS FOR THE HYDRAULIC CIRCUIT DIAGRAM............................................... 85 ELECTRIC CIRCUIT DIAGRAM..............................................................101 HINTS FOR THE ELECTRIC CIRCUIT DIAGRAM............................................107 HINTS FOR CHECK AND ADJUSTMENTS...................................................119 PROPULSION............................................................................121 CUMMINS ENGINE....................................................................123 SWITCHES, SENSORS AND FILTERS.....................................................125 RPM ADJUSTMENTS...................................................................129 FAN/FAN DRIVE.....................................................................135 AIR FILTER........................................................................137 COUPLING..........................................................................139 PUMP DISTRIBUTOR GEAR.................................................................141 GEAR LUBRICATION..................................................................143 HYDRAULIC PUMPS.......................................................................147 PUMP BEARING LUBRICATION..............................................................149 PUMP REGULATION.......................................................................151 LOAD LIMIT REGULATION.............................................................155 PRESSURE CUT-OFF..................................................................165 SETTING OF THE LOAD LIMIT VALVE...................................................167 MEASURING AND SETTING OF THE PRESSURE OF THE PRESSURE CUT-OFF VALVE...............169 MEASURING AND SETTING OF THE BEGINNING OF REGULATION WITHOUT A TEST BOLT..........171 CHECKING WITH TEST SCREW..........................................................173 HYDRAULIC OIL COOLING.................................................................175 MEASURING AND SETTING OF THE FAN SPEED............................................181 COOLING CIRCUIT...................................................................185 MEASURING AND SETTING OF THE BACK PRESSURE VALVE..................................187 CHECKS TO BE PERFORMED IF HYDRAULIC TEMPERATURE IS TOO HIGH.......................189 HYDRAULIC OIL TANK....................................................................191 PILOT PRESSURE CIRCUITS...............................................................193 CONTROL OIL SUPPLY................................................................195 CHECKS AND ADJUSTMENTS............................................................199 CONTROL OIL FLOW FROM THE 4 FUNCTIONS PILOT CONTROL UNIT TO THE CONTROL BLOCKS....201 CONTROL OIL FLOW FROM PEDAL TO THE CONTROL BLOCK..................................207 CONTROL OIL FLOW FROM THE 2 FUNCTION CONTROL UNIT TO CONTROL BLOCK................209 TRAVEL PARKING BRAKE..............................................................211 SLEW PARKING BRAKE................................................................213 SERVICE LINE CIRCUITS.................................................................215 MEASUREMENTS AND PRESSURE ADJUSTMENTS/SLEW CIRCUIT................................225 TRAVEL MOTORS.....................................................................233 MEASUREMENTS AND PRESSURE ADJUSTMENTS/TRAVEL MOTORS...............................235 BUCKET CYLINDER...................................................................239 MEASUREMENTS AND PRESSURE ADJUSTMENTS/BUCKET CYLINDER.............................241 CLAM CYLINDER.....................................................................249 MEASURINGS AND PRESSURE ADJUSTMENTS/CLAM CYLINDER.................................251 STICK CYLINDER/LOADER ATTACHMENT..................................................261 MEASURINGS AND PRESSURE ADJUSTMENTS/STICK CYLINDER/LOADER ATTACHMENT..............263 BOOM CYLINDER/LOADER ATTACHMENT...................................................271 MEASURINGS AND PRESSURE ADJUSTMENTS/BOOM CYLINDERS/LOADER ATTACHMENTS.............273 BUCKET CYLINDER (BACK HOE ATTACHMENT).............................................281 MEASUREMENTS AND PRESSURE ADJUSTMENTS/BUCKET CYLINDER.............................283 STICK CYLINDER/BACK HOE ATTACHMENT................................................291 MEASURINGS AND ADJUSTMENTS/STICK CYLINDER/BACK HOE ATTACHMENT.....................293 BOOM CYLINDER/BACK HOE ATTACHMENT.................................................301 MEASURINGS AND PRESSURE ADJUSTMENTS/BOOM CYLINDERS/BACK HOE ATTACHMENT............303 AIR CONDITION DRIVE...............................................................309 MEASUREMENT AND ADJUSTMENT/AIR CONDITION DRIVE....................................311 LUBRICATION SYSTEM....................................................................313 SINGLE CIRCUIT CENTRAL LUBRICATION SYSTEM WITH PROGRESSIVE DISTIBUTORS............315 ELECTRICAL FUNCTION...............................................................321 MEASUREMENT AND PRESSURE ADJUSTMENT/COMPRESSED AIR SYSTEM.........................325 SLEW RING TOOTHING MIST LUBRICATION...............................................331 ELECTRICAL FUNCTION...............................................................335 MEASUREMENT AND PRESSURE ADJUSTMENT/COMPRESSED AIR SYSTEM.........................339 GENERATOR DRIVE.......................................................................345 MEASUREMENTS AND ADJUSTMENTS/GENERATOR DRIVE......................................347 PART 3....................................................................................353 LIST OF CONTENTS......................................................................353 PLATFORM..............................................................................363 DIESEL MOTOR..........................................................................365 COMPUSAVE ENGINE MOTOR............................................................367 COUPLING..............................................................................407 UNIVERSAL SHAFT.......................................................................409 PUMP DISTRIBUTOR GEAR.................................................................411 HYDRAULIC PUMPS.......................................................................417 MAIN PUMPS, A7V HDD...............................................................417 GEARED PUMPS......................................................................431 HYDRAULIC PUMP A2F................................................................437 HYDRAULIC PUMP A10V 0.............................................................441 HYDRAULIC PUMP A7F 0/107..........................................................445 DIESEL FUEL TANK......................................................................447 ELECTRONIC SET-UP.................................................................449 HYDRAULIC OIL TANK....................................................................453 HYDRAULIC OIL FILTERS.................................................................463 FILTERS IN THE PUMP LINE TO THE CONTROL BLOCKS....................................463 IN-LINE FILTER....................................................................467 RETURN OIL/CASE DRAIN FILTER IN THE HYDRAULIC RESERVOIR...........................469 BREATHER FILTER ON THE HYDRAULIC OIL RESERVOIR....................................471 CONTROL BLOCKS AND VALVES.............................................................473 4 FOLD CONTROL BLOCK M0 52........................................................473 PRESSURE RELIEF VALVE, PILOT OPERATED.............................................479 SECONDARY VALVE: PRE-CONTROLLED...................................................483 ANTI-CAVITATION VALVE (MAKE-UP VALVE).............................................485 LOAD HOLDING VALVES INSIDE THE SPOOLS.............................................487 SINGLE CONTROL BLOCK M0 40........................................................489 PRESSURE INCREASING VALVE.........................................................495 PRESSURE RELIEF VALVE, PILOT OPERATED.............................................499 CHECK VALVE.......................................................................503 SHUTTLE VALVE.....................................................................505 PRESSURE RELIEF VALVE, PRE-CONTROLLED.............................................507 PRESSURE RELIEF VALVE, PILOT OPERATED.............................................509 PRESSURE RELIEF VALVE, PILOT OPERATED.............................................511 PRESSURE RELIEF VALVES TYPE DB/DBW................................................513 MAGNET VALVE......................................................................515 PRESSURE RELIEF VALVE, REMOTE CONTROLLED..........................................517 LOAD LIMIT VALVE..................................................................519 NOZZLE BLOCK/PUMP REGULATING......................................................525 PRESSURE SEQUENCE VALVE (PRESSURE CUT OFF VALVE)..................................527 RESTRICTOR BLOCK..................................................................529 PILOT CONTROL UNITS, 4 BOLT UNITS.................................................531 PILOT CONTROL UNITS, 1 BOLT UNITS.................................................535 TRAVEL BRAKE VALVE................................................................537 PRESSURE ACCUMULATOR..................................................................541 TESTING THE PRECHARGE PRESSURE AND REFILLING......................................545 SLEW GEAR.............................................................................549 REPLACEMENT OF THE DISKS..........................................................553 REPLACEMENT OF THE QUAD-RINGS.....................................................555 AXIAL PISTON MOTOR................................................................557 SLEW RING.............................................................................561 UNDERCARRIAGE.........................................................................563 IDLER WHEEL ASSEMBLY..............................................................563 ALTERING THE TRACK TENSION....................................................565 BOTTOM ROLLER.....................................................................567 TOP ROLLER........................................................................569 CRAWLER DRIVE ASS'Y...............................................................571 TRAVEL GEAR.......................................................................575 REPLACEMENT OF THE DISKS......................................................579 REPLACEMENT OF THE QUAD-RINGS.................................................581 DRIVE SPROCKET....................................................................583 CRAWLER CHAIN.....................................................................585 AXIAL PISTON MOTOR................................................................587 ROTARY DISTRIBUTOR................................................................595 HYDRAULIC CYLINDERS...................................................................601 AIR CONDITIONING EQUIPMENT............................................................605 MAINTENANCE SCHEDULE..............................................................617 PRESSURE MONITORING...............................................................635 COMPRESSED AIR SYSTEM.................................................................639 COMPRESSOR AT CU ENGINE...........................................................639 AIR DRYER.........................................................................643 AUTOMATIC DRAIN VALVE.............................................................649 AIR EQUIPMENT - SERVICE UNIT......................................................651 SOLENOID VALVE....................................................................657 VENT VALVE ASSEMBLY...............................................................659 LUBE SYSTEM...........................................................................661 METERING VALVE....................................................................661 PROGRESSIVE LUBE DISTRIBUTOR......................................................669 PRESSURE CONTROL UNIT.............................................................673 TROUBLESHOOTING LUBRICATION SYSTEM................................................675 SHORT INFORMATION.....................................................................691 REVOLUTIONS/PRESSURES.............................................................691 FILLING CAPACITIES................................................................693 HYDRAULIC OIL.....................................................................695 TORQUE CHART..........................................................................697 TORQUE CHART - NM.................................................................697 TORQUE CHART - FT LBF.............................................................699 CONVERSION METRIC/INCH................................................................701 TROUBLESHOOTING H285......................................................................703 GENERAL ..............................................................................705 MALFUNCTION WHEN EXTENDING OR RETRACTING CYLINDERS....................................707 TROUBLESHOOTING SLEW CIRCUIT..........................................................709 TROUBLESHOOTING SLEW BRAKE CIRCUIT....................................................711 TROUBLESHOOTING SLEW HOUSE BRAKE CIRCUIT..............................................713 TROUBLESHOOTING TRAVEL CIRCUIT........................................................715 TROUBLESHOOTING THE TRAVEL BRAKE CIRCUIT..............................................717 TROUBLESHOOTING PUMP REGULATION CIRCUIT...............................................719 TROUBLESHOOTING OIL COOLER CIRCUIT....................................................721 HYDRAULIC/ELECTRICAL DIAGRAM..............................................................723 CONTENTS..............................................................................723 HYDRAULIC DIAGRAM.....................................................................724 ELECTRICAL DIAGRAM....................................................................727
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