Daewoo Doosan Wheel Loader Mega 250-V Shop Manual K1000898E – PDF DOWNLOAD

Description

Daewoo Doosan Wheel Loader Mega 250-V Shop Manual K1000898E – PDF DOWNLOAD

DESCRIPTION:

Daewoo Doosan Wheel Loader Mega 250-V Shop Manual K1000898E – PDF DOWNLOAD

Mega 250-V
Shop Manual
K1000898E
Serial Number 3001 and Up

GENERAL SAFETY ESSENTIALS:

ACCESSORY APPLICATIONS :

• This wheel loader has been designed primarily for moving earth with a bucket. For use as a grapple or for other object handling, contact DOOSAN. Lifting-work applications are permitted in approved lift configuration, to rated capacity only, with no side-loading (unless prohibited by local regulation).
• Do not use machine for activities for which it was not intended. Do not use bucket for lifting work, unless lift slings are used in approved configuration.

LOCATION OF SAFETY LABELS :

• Location of safety labels (decals) can vary from unit to unit. Refer to appropriate Operation and Maintenance Manual, and Parts Manual for your unit. There are several specific warning signs on this machine.
• The exact location of hazards and the description of the hazards are reviewed in the appropriate Operation and Maintenance Manual. Please become familiarized with all warning signs. Make sure that all of the warning signs are legible.
• Clean the warning signs or replace the warning signs if you cannot read the words. Replace the illustrations if the illustrations are not visible. When you clean the warning signs, use a cloth, water and soap. Do not use solvent, gasoline, or other harsh chemicals to clean the safety signs.
• Solvents, gasoline, or other harsh chemicals could loosen the adhesive that secures the warning sign. Loose adhesive will allow the warning sign to fall off. Replace any safety sign that is damaged, or missing. If a safety sign is attached to a part that is replaced, install a safety sign on the replacement part.

UNAUTHORIZED MODIFICATIONS:

• Any modification made without authorization or written approval from DOOSAN can create a safety hazard, for which the machine owner must be held responsible. For safety’s sake, replace all OEM parts with the correct authorized or genuine DOOSAN part.
• For example, not taking the time to replace fasteners, bolts or nuts with the correct replacement parts could lead to a condition in which the safety of critical assemblies is dangerously compromised.

TABLE OF CONTENTS:

Daewoo Doosan Wheel Loader Mega 250-V Shop Manual K1000898E – PDF DOWNLOAD

Publication Request for Proposed Revision.......................................................................  7
Safety..........................................................................................................  9
	Wheel Loader Safety S0103010K............................................................................... 11
		To the Operator of a DOOSAN Daewoo Wheel Loader......................................................... 13
			Learn Signal Words Used with Safety Alert Symbol.................................................... 15
		General Safety Essentials............................................................................... 16
			Accessory Applications.............................................................................. 16
		Location of Safety Labels............................................................................... 16
		Unauthorized Modifications.............................................................................. 16
		General Hazard Information.............................................................................. 17
			Safety Rules........................................................................................ 17
			Safety Features..................................................................................... 17
			Inside Operator's Compartment....................................................................... 18
			Clothing and Personal Protective Items.............................................................. 18
			Breathing Masks, Ear Protection May Be Required..................................................... 19
			Vibration Level Information......................................................................... 19
			Asbestos Dust Hazard Prevention..................................................................... 19
			Mounting and Dismounting............................................................................ 20
			Fuel, Oil and Hydraulic Fluid Fire Hazards.......................................................... 20
			Precautions When Handling Fluids at High Temperature................................................ 21
			Injury from Work Equipment.......................................................................... 21
			Fire Extinguisher and First Aid Kit................................................................. 22
			Protection from Falling or Flying Objects........................................................... 22
			Install Additional Safety Equipment If Conditions Require........................................... 23
			Maintain Standard Safety Equipment in Good Condition................................................ 23
			Attachment Precautions.............................................................................. 24
			Accumulator......................................................................................... 24
			Engine Ventilation.................................................................................. 24
		Before Starting Engine.................................................................................. 25
			Work Site Precautions............................................................................... 25
			Checks Before Starting Engine....................................................................... 26
			Engine Starting..................................................................................... 26
			Before Operating Machine............................................................................ 27
		Machine Operation....................................................................................... 28
			Operate While Seated at Operator's Station ONLY..................................................... 28
			Seat Belts Must Be Used at All Times................................................................ 28
			Movement Alarms..................................................................................... 28
			Travel Precautions.................................................................................. 29
			Sloping Terrain Requires Caution.................................................................... 29
			Avoid High Voltage Cables........................................................................... 30
			Before Starting to Dig, Contact Authorities......................................................... 30
			Be Aware of Height Obstacles........................................................................ 30
			Use Care on Loose Support........................................................................... 30
			Use Solid Support Blocking.......................................................................... 31
			Digging Beneath Overhangs........................................................................... 31
			Digging Beneath Wheel Loader........................................................................ 31
			Stay Alert for People Moving Through Work Area...................................................... 31
			Be Aware of and Conform to Local Regulations........................................................ 31
			Never Use Ether Starting Aids....................................................................... 32
			Observe General Safety Rules........................................................................ 32
			Take Time to Provide Good Visibility................................................................ 32
			Keep "Pinch Point" Areas Clear  Use Caution in Reverse............................................. 33
			Operate Carefully on Snow and Ice and in Very Cold Temperatures..................................... 33
			Parking Machine..................................................................................... 33
			Shutdown Control Functions.......................................................................... 34
			Never Let Anyone Ride on Attachment................................................................. 34
		Maintenance............................................................................................. 35
			Use Warning Tag During Service...................................................................... 35
			clean Before Inspection or Maintenance.............................................................. 35
			Proper Tools........................................................................................ 36
			Use of Lighting..................................................................................... 36
			Fire Prevention and Explosion Prevention............................................................ 36
			Burn Prevention..................................................................................... 37
			Welding Repairs..................................................................................... 38
			Precautions for Removal, Installation, and Storage of Attachments................................... 38
			Precautions When Working on Machine................................................................. 39
			Lock Inspection Covers.............................................................................. 39
			Crushing Prevention and Cutting Prevention.......................................................... 39
			Do Not Run Engine If Repairs or Work Are Being Performed Alone...................................... 39
			Always Use Adequate Equipment Supports and Blocking................................................. 40
			Do Not Work on Hot Engines or Hot Cooling or Hydraulic Systems...................................... 40
			Hydraulic Cylinder Seals Require Periodic Replacement............................................... 40
			Highpressure Hydraulic Lines Can Store a Great Deal of Energy...................................... 40
			Precautions with Highpressure Line, Tubes and Hoses................................................ 41
			Obtain Immediate Medical Attention if Pressurized Oil Pierces Skin.................................. 41
			Use Correct Replacement Fasteners Tightened to Proper Torque........................................ 42
			Safety Critical Parts Must Be Replaced Periodically................................................. 42
			Dispose of All Petroleum Based Oils and Fluids Properly............................................. 42
			Check Tire Pressure and Condition................................................................... 42
		Battery................................................................................................. 43
			Battery Hazard Prevention........................................................................... 43
			Disconnect Batteries Before Electrical Service or Electrical Welding................................ 43
			Use Low Heat Portable Lighting...................................................................... 44
			Boost Starting or Charging Engine Batteries......................................................... 44
		Towing.................................................................................................. 45
			Precautions When Towing............................................................................. 45
		Shipping and Transportation............................................................................. 46
			Obey State and Local OvertheRoad Regulations...................................................... 46
			Summary of Safety Precautions for Lifting........................................................... 46
Specifications.................................................................................................. 47
	Specifications for Mega 250V S0203115...................................................................... 49
		Component Locations..................................................................................... 52
		General Specifications.................................................................................. 56
		Engine Performance Curves............................................................................... 59
		Working Range and Dimensions............................................................................ 62
		Working Capacities...................................................................................... 65
			Bucket Capacity..................................................................................... 65
			Tipping Load........................................................................................ 65
		Material Weight......................................................................................... 65
			Approximate Weight of Workload Materials............................................................ 65
General Maintenance............................................................................................. 69
	General Maintenance Procedures S0302000..................................................................... 71
		Welding Precautions and Guidelines...................................................................... 73
		Hydraulic System  General Precautions.................................................................. 74
		Maintenance Service and Repair Procedure................................................................ 75
			General Precautions................................................................................. 75
		Hydraulic System Cleanliness and Oil Leaks.............................................................. 76
			Maintenance Precautions for Hydraulic System Service................................................ 76
			Oil Leakage Precautions............................................................................. 76
		Cleaning and Inspection................................................................................. 77
			General Guidelines.................................................................................. 77
			Bearing inspection.................................................................................. 78
				Normal Bearing.................................................................................. 79
				Bent Cage....................................................................................... 79
				Galling......................................................................................... 79
				Abrasive Step Wear.............................................................................. 80
				Etching......................................................................................... 80
				Misalignment.................................................................................... 80
				Indentations.................................................................................... 80
				Fatigue Spalling................................................................................ 81
				Brinelling...................................................................................... 81
				Cage Wear....................................................................................... 81
				Abrasive Roller Wear............................................................................ 81
				Cracked Inner Race.............................................................................. 82
				Smears.......................................................................................... 82
				Frettage........................................................................................ 82
				Heat Discoloration.............................................................................. 83
				Stain Discoloration............................................................................. 83
	Standard Torques S0309000................................................................................... 85
		Torque Values for Standard Metric Fasteners............................................................. 87
		Torque Values for Standard U.S. Fasteners............................................................... 88
		Type 8 Phosphate Coated Hardware........................................................................ 90
		Torque Values for Hose Clamps........................................................................... 91
		Torque Values for Split Flanges......................................................................... 92
		Torque Wrench Extension Tools........................................................................... 93
			Torque Multiplication............................................................................... 93
			Other Uses for Torque Wrench Extension Tools........................................................ 94
			Tightening Torque Specifications (Metric)........................................................... 94
				I. "Loctite" Fastener Adhesives................................................................. 95
				II. "Loctite" Pipe Thread Sealant............................................................... 95
				III. "Loctite" gasket/flange sealer............................................................. 95
				IV. "Loctite" retaining compounds............................................................... 96
				V. "Loctite" Adhesives.......................................................................... 96
Upper Structure................................................................................................. 97
	Counterweight S0403030K..................................................................................... 99
		Specifications..........................................................................................101
		Counterweight...........................................................................................101
	Fuel Transfer Pump S0405500.................................................................................103
		General Description.....................................................................................105
			Theory of Operation.................................................................................105
		Troubleshooting.........................................................................................106
		Replacement of Rotor and Vane...........................................................................106
		Replacement of Rear Cover...............................................................................107
		Replacement of Armature.................................................................................108
	Hydraulic Oil Tank S0406060C................................................................................109
		General Description.....................................................................................111
			Parts List (M200V).................................................................................111
			Parts List (M250V).................................................................................113
			Specifications......................................................................................115
Lower Structure and Chassis.....................................................................................117
	Center Joint (Articulation Joint) S0502050C.................................................................119
		General Description.....................................................................................121
			Maintenance Standard................................................................................122
Engine and Drive Train..........................................................................................125
	Rear Axle (ZFMTL 3075) S0602270...........................................................................127
		General Description.....................................................................................131
			Outline.............................................................................................131
				Mega 250V......................................................................................132
			Lubrication Instructions............................................................................134
				Oil Drain.......................................................................................135
				Oil Filling.....................................................................................135
				Check...........................................................................................135
				Oil Change Intervals............................................................................135
				Oil Level Check.................................................................................135
				Bleeders........................................................................................135
				Brake...........................................................................................135
				Brake Bleeding at Vehicle.......................................................................135
			Make Wear Measurement on Multidisk Brake............................................................136
				Wear measurement  Multidisk brake..............................................................136
			Inscriptions on Model Identification Plate..........................................................137
			Torque Limits for Screws............................................................................138
				Torque Limits for Screws (In Nm) According to ZFStandards 148..................................138
			Examples of geartoothcontact patterns for the gleason geartooth system...........................139
		Special Tool............................................................................................142
			List of Special Tools for Disassembly and Reassembly................................................142
		ZFMultitrac Rigid Axle MTL 3075.......................................................................152
			Disassembly of output and brake.....................................................................152
			Reassembly of Output and Brake......................................................................162
			Disassembly of differential carrier and brake tubes.................................................175
				Disassembly of differential carrier.............................................................175
				Disassembly of limited slip differential........................................................178
				Disassembly of drive pinion.....................................................................180
				Disassembly of brake tubes......................................................................182
			Reassembly of brake tubes and differential carrier..................................................184
				Reassembly of brake tubes.......................................................................184
				Reassembly of differential carrier..............................................................186
				Determine shim thickness for a perfect tooth contact pattern....................................186
				Install drive pinion............................................................................188
				Reassembly of limited slip differential.........................................................192
				Determine disk clearance 0.2  0.8mm...........................................................195
				Adjust backlash and bearing preload.............................................................198
	Front Axle (ZFMTL 3085) S0602280..........................................................................201
		General Description.....................................................................................205
			Outline.............................................................................................205
				Mega 250V......................................................................................206
			Lubrication instructions............................................................................208
				Oil drain.......................................................................................209
				Oil filling.....................................................................................209
				Check...........................................................................................209
				Oil change intervals............................................................................209
				Oil level check.................................................................................209
				Bleeders........................................................................................209
				Brake...........................................................................................209
				Brake bleeding at the vehicle...................................................................209
			Make Wear Measurement on Multidisk Brake............................................................210
				Wear measurement  Multidisk brake..............................................................210
			Inscriptions on Model Identification Plate..........................................................211
			Torque Limits for Screws............................................................................212
				Torque Limits for Screws (In Nm) According to ZFStandards 148..................................212
			Examples of geartoothcontact patterns for the gleason geartooth system...........................213
		Special Tool............................................................................................216
			List of Special Tools for Disassembly and Reassembly................................................216
		ZFMultitrac Rigid Axle MTL 3085.......................................................................225
			Disassembly of output and brake.....................................................................225
			Reassembly of Output and Brake......................................................................234
			Disassembly of differential carrier and brake tubes.................................................247
				Disassembly of differential carrier.............................................................247
				Disassembly of limited slip differential........................................................250
				Disassembly of drive pinion.....................................................................252
				Disassembly of brake tubes......................................................................254
			Reassembly of brake tubes and differential carrier..................................................255
				Reassembly of oil pipes.........................................................................255
				Reassembly of differential carrier..............................................................258
				Determine shim thickness for a perfect tooth contact pattern....................................258
				Install drive pinion............................................................................259
				Reassemble of limited slip differential.........................................................263
				Determine disk clearance 0.2  0.8mm...........................................................265
				Adjustment of backlash and bearing preload......................................................268
	Parking Brake Caliper (ZF) S0603001.........................................................................273
		Functional Characteristics and Maintenance Instructions.................................................275
			Functional Characteristics of Springloaded Sliding Caliper Brakes..................................275
			Mounting and Basic Setting Regulations..............................................................276
			Adjusting Regulations...............................................................................276
			Emergency release of parking brake..................................................................276
			Maintenance and Repair Work.........................................................................277
				Maintenance and Exchange of Brake Pads..........................................................277
				Changing Seal...................................................................................278
			General.............................................................................................278
	Air Conditioner S0605050K...................................................................................279
		General Description.....................................................................................281
		Refrigerant Circulation.................................................................................282
		Control Panel...........................................................................................284
		Control Specifications..................................................................................285
		Temperature Level Control and Display...................................................................286
		Air Discharge According to Path Selection...............................................................287
			Vent................................................................................................287
			Foot................................................................................................288
			Defroster...........................................................................................289
		Airconditioning System Circuit Diagram.................................................................290
		Troubleshooting.........................................................................................292
			Refrigerant Pressure Check..........................................................................292
		Weight of R134a Gas Used In Machines....................................................................295
		Refrigerant System Repairs..............................................................................297
			Refrigerant Safe Handling Procedures................................................................297
			Repair and Replacement Procedure....................................................................298
			Refrigerant Recovery................................................................................300
			Vacuuming Refrigerant System........................................................................300
			Leakage Check.......................................................................................302
			Refrigerant Charging................................................................................302
			Inspecting System for Leakage.......................................................................304
	Transmission and Torque Converter (ZF4WG190) S0607140.....................................................305
		Drive Train Description.................................................................................310
		Transmission and Torque Converter.......................................................................312
			Powershift Transmission.............................................................................313
			Transmission Control................................................................................313
			The Chart of Measuring Points and Connection 4 WG190...............................................315
			Oil Circuit Diagram 4WG190.........................................................................317
		Transmission Electric Components........................................................................319
			TCU (Transmission Control Unit).....................................................................320
			Transmission Control Valve..........................................................................320
			Transmission Oil Temperature Sensor.................................................................321
			Engine Pickup Sensor................................................................................321
			Central Gear Pickup Sensor..........................................................................321
			Turbine Pickup Sensor...............................................................................322
			Output Speed Sensor.................................................................................322
			Shift Lever Switch (DW3)...........................................................................322
			Auto Selector Switch................................................................................324
			Display.............................................................................................324
		Transmission Electrical Circuits........................................................................325
			T/M Controller Circuit..............................................................................325
			Traveling Circuits..................................................................................326
				Neutral.........................................................................................326
				Forward First Gear..............................................................................327
				Forward Second Gear.............................................................................328
				Forward Third Gear..............................................................................329
				Forward Fourth Gear.............................................................................330
				Reverse First Gear..............................................................................331
				Reverse Second Gear.............................................................................332
				Reverse Third Gear..............................................................................333
			Downshift...........................................................................................334
				Overview........................................................................................334
				Kickdown: Forward Second Gear to Forward First Gear (Auto Selector Switch "O" Manual Mode)....335
				Downshift (Auto Selector Switch "I"  Auto Mode)................................................336
			Transmission Cut Off................................................................................337
			LIS (Load Isolation System)  Option................................................................338
		Installation View.......................................................................................339
			Inner Section.......................................................................................339
			Front View..........................................................................................340
			Side View...........................................................................................341
			Rear View...........................................................................................342
		Special Tools...........................................................................................343
			Gearshift System....................................................................................343
			Engine Connection...................................................................................345
			Pressure Oil Pump...................................................................................346
			Gearbox Housing.....................................................................................347
			Input...............................................................................................349
			Clutch..............................................................................................350
				Clutch KV.......................................................................................350
				Clutch KR.......................................................................................351
				Clutch K1.......................................................................................352
				Clutch K2.......................................................................................353
				Clutch K3.......................................................................................354
				Clutch K4.......................................................................................355
			Output..............................................................................................356
			Power Takeoff......................................................................................357
		Hydraulic Control Unit (HSG94).........................................................................358
			Disassembly.........................................................................................359
			Reassembly..........................................................................................362
		Transmission Disassembly................................................................................369
			Hydraulic Control Unit (HSG94) and Duct Plate......................................................369
			Engine Connection  Converter.......................................................................370
			Hydraulic Pump......................................................................................372
			Converter Back Pressure Valve.......................................................................373
			Remove Output, Input and Clutches...................................................................374
			Disassemble Clutch  KV and KR......................................................................379
			Disassemble Clutch  K1, K2 and K3..................................................................382
			Dissemble Clutch  K4...............................................................................384
			Disassemble Drive Shaft.............................................................................385
		Transmission Reassembly.................................................................................387
			Install Oil Tube....................................................................................387
			Reassemble Clutch  KV and KR.......................................................................389
			Reassemble Clutch  K1, K2 and K3...................................................................395
			Reassemble Clutch  K4..............................................................................402
			Preassemble Drive Shaft.............................................................................409
			Preassemble and Install Output......................................................................410
			Install Preassembled Drive Shaft and Clutches.......................................................412
			Install Pump Shaft (Power Takeoff).................................................................415
			Install Output Flanges..............................................................................416
			Converter Back Pressure Valve.......................................................................418
			Oil Feed Housing  Transmission Pump................................................................418
			Engine Connection  Converter.......................................................................420
			Converter Safety Valve..............................................................................423
			Mount Duct Plate and Hydraulic Control Unit.........................................................423
			Install Plugs and Oil Level Tube....................................................................424
			Speed Sensor and Inductive Transmitters.............................................................426
			Setting Inductive Transmitter.......................................................................427
			Speed Sensor (Hall Sensor) N Output and Speedometer.................................................429
	Transmission Error Codes (ZF) S0607900C.....................................................................431
		Introduction............................................................................................434
		Abbreviations...........................................................................................434
		Display.................................................................................................434
			Description of Fault Codes..........................................................................435
		Display During Operation................................................................................436
		Definition of Operating Modes...........................................................................438
			Normal..............................................................................................438
			Substitute Clutch Control...........................................................................438
			Limphome...........................................................................................438
			Transmission shut Down..............................................................................438
			TCU Shut Down.......................................................................................438
		Clutch Pack and Solenoid Valve Crossreference Table....................................................439
		Table of Fault Codes....................................................................................440
		Table of Fault Codes  ERGOControl.....................................................................462
		Measurement of Resistance at Actuator/ sensors and Cable................................................465
			Actuator............................................................................................465
			Cable...............................................................................................465
Hydraulics......................................................................................................467
	Accumulator S0703010K.......................................................................................469
		General Description.....................................................................................471
			Specifications......................................................................................472
	Cylinders S0705005K.........................................................................................475
		General Description.....................................................................................478
			Theory of Operation.................................................................................479
			Parts List..........................................................................................480
				Bucket Hydraulic Cylinder.......................................................................480
				Lift Hydraulic Cylinder.........................................................................482
				Steering Hydraulic Cylinder.....................................................................484
		Troubleshooting, Testing and Adjustment.................................................................486
		Disassembly.............................................................................................490
		Cleaning and Inspection (Wear Limits and Tolerances)....................................................492
		Reassembly..............................................................................................493
	Fan Drive Hydraulic Motor (Haldex) S0707110C................................................................501
		General Description.....................................................................................504
			Theory of Operation.................................................................................504
				Mega 200V......................................................................................504
				Mega 250V......................................................................................506
			Parts List..........................................................................................508
			Specifications......................................................................................509
		Troubleshooting, Testing and Adjustment.................................................................510
		Tools Required..........................................................................................510
		Disassembly.............................................................................................511
		Inspect Parts for Wear..................................................................................514
		General Information.....................................................................................515
		Reverse Shaft Rotation of Pump..........................................................................515
		Reassembly..............................................................................................516
	Main Pump (Denison T67CCA Series) S0708500C.................................................................521
		General Description.....................................................................................523
			Theory of Operation.................................................................................523
			Parts List..........................................................................................524
			Service Kits........................................................................................526
			Dimensions..........................................................................................527
			Specification.......................................................................................528
				Model Number Code Series T6DC...................................................................528
				Specifications..................................................................................528
		Special Tools...........................................................................................529
			Seal Driver.........................................................................................529
			Protective Cone.....................................................................................529
		Disassembly.............................................................................................530
		Reassembly..............................................................................................534
	Brake Pedal Valve S0709271..................................................................................539
		General Description.....................................................................................541
			Theory of Operation.................................................................................541
			Specification.......................................................................................542
		Brake System............................................................................................543
			Brake and Pilot Supply Valve........................................................................543
			Brake, Pilot and Fan Motor Supply Valve.............................................................544
		Brake, Pilot and Fan Motor Supply Valve.................................................................545
			Brake and Pilot Supply Valve........................................................................545
				Specifications..................................................................................546
			Brake, Pilot and Fan Motor Supply Valve.............................................................547
				Specifications..................................................................................548
	Main Control Valve (Toshiba) S0709456K......................................................................549
		General Description.....................................................................................551
		Specifications..........................................................................................553
		Operation...............................................................................................554
			Neutral.............................................................................................554
			Bucket/option Spool Operation.......................................................................554
			Boom Spool Operation................................................................................555
				Boom Float......................................................................................555
			Relief Valve........................................................................................555
				Main Relief Valve...............................................................................555
				Port Relief Valve...............................................................................555
			Operation (Main Relief Valve).......................................................................556
				Operation in Inoperative State..................................................................556
				Operation (A)...................................................................................556
				Operation (B)...................................................................................556
			Operation (Port Relief Valve).......................................................................557
				In the Inoperative State........................................................................557
				Operation (A)...................................................................................557
				Operation (B)...................................................................................557
				Operation (C)...................................................................................558
				Sucking Operation...............................................................................558
	Pilot Control Valve S07094765...............................................................................559
		General Description.....................................................................................561
			Pilot Valve Operation...............................................................................561
			Parts List..........................................................................................562
		Pilot System............................................................................................564
			Mega 250V..........................................................................................565
	Pilot Control Valve (FNR) S07094776.........................................................................567
		Joystick Valve Assembly.................................................................................569
		HRC6  LV...............................................................................................571
			Dual Axis Section...................................................................................572
			Single Axis Section.................................................................................573
				Dual Axis: Actuation Components and Flange......................................................574
				Single Axis: Actuation Components and Flange....................................................575
				Spring capsule assemblies and joint plate.......................................................576
				Valve Body, Bushing Assembly and Shuttle Valve..................................................577
	Priority Valve S0709650.....................................................................................579
		General Description.....................................................................................581
			Theory of Operation.................................................................................581
			Parts List..........................................................................................583
			Specifications......................................................................................584
		Special Tools...........................................................................................584
		Disassembly.............................................................................................584
		Cleaning and Inspection (Wear Limits and Tolerances)....................................................586
		Reassembly..............................................................................................587
	EHPS (Electric Hydraulic Power Steering) S0709715...........................................................591
		Steering Control System.................................................................................594
			EHPS Valve..........................................................................................594
				Description of operation of EHPS with integrated priority valve.................................595
			Steering Spool at Neutral Position..................................................................596
			Steering Spool Operated.............................................................................597
				1. Turning Left.................................................................................597
				2. Turning Right................................................................................598
			Pressure Reducing Valves............................................................................599
				Pilot Relief Valve..............................................................................600
		Function................................................................................................601
			Picture of Components in the EHPS...................................................................601
	Power Steering Unit S0709735................................................................................603
		General Description.....................................................................................605
			Steering Unit.......................................................................................605
			Function............................................................................................605
				Exploded View of a Steering Unit................................................................606
	Unloader Valve S0709865.....................................................................................607
		General Description.....................................................................................609
			Theory of Operation.................................................................................609
			Unloader Cartridge Identification...................................................................611
			Specifications......................................................................................612
	Hydraulic Schematic (Mega 250V) S0793005C..................................................................613
		General Description.....................................................................................615
		Mega 250V (Tier I) S/N 1001 thru 2000..................................................................616
		Mega 250V (Tier II) S/N 2001 thru 3000.................................................................618
		Mega 250V (Tier I) S/N 3001 thru 4000..................................................................620
		Mega 250V (Tier II) S/N 4001 and Up....................................................................622
Electrical System...............................................................................................625
	Electrical System S0802017C.................................................................................627
		Overview................................................................................................631
			Electric Wire Color.................................................................................631
		Electric Supply System..................................................................................632
		Engine Starting Circuit.................................................................................634
			Operation During Start Process......................................................................634
			Operation After Start Process (Mega 200V)..........................................................636
			Operation After Start Process (Mega (250V).........................................................637
		Engine Preheating System................................................................................638
			Mega 200V / 250V (Tier I).........................................................................638
			Mega 200V / 250V (Tier II)........................................................................642
				Principle of Operation..........................................................................642
		Engine Stop System......................................................................................646
			Operation In Engine Running Mode....................................................................646
			Operation In Engine Stop Mode.......................................................................648
		Charging System.........................................................................................650
		Monitoring System.......................................................................................651
			Instrument Panel....................................................................................652
			Function Check......................................................................................653
			Monitoring System Schematic.........................................................................654
				Mega 200V......................................................................................654
				Mega 250V......................................................................................656
			Operation...........................................................................................658
				Instruments.....................................................................................658
				Indicator Lights................................................................................660
				Initial Operation...............................................................................661
				Control Unit Operation..........................................................................662
				Characteristic of Operation.....................................................................663
		Windshield Wiper........................................................................................664
			Front windshield wiper..............................................................................664
				Front Windshield Wiper Circuit..................................................................664
			Rear Windshield wiper...............................................................................665
		Lighting System.........................................................................................668
			Light Circuit (Mega 200V)..........................................................................668
			Light Circuit (Mega 250V)..........................................................................672
		Emergency Steering System (Option)......................................................................675
			Block Diagram.......................................................................................675
			Emergency Steering System Components................................................................676
				Emergency Steering Timer........................................................................676
				Emergency Steering Pump.........................................................................677
				Emergency Steering Switch.......................................................................677
			Emergency Steering System Electric Circuit..........................................................678
		Electric Detent System..................................................................................679
			Electric Circuit....................................................................................679
			Boom Kickout.......................................................................................680
			Return To Dig.......................................................................................681
				Proximity Switch................................................................................681
	Electrical Schematic (Mega 250V) S0893005C.................................................................683
		General Description.....................................................................................685
		Mega 250V (Tier I).....................................................................................686
		Mega 250V (Tier II)....................................................................................688
Attachments.....................................................................................................691

DAEWOO DOOSAN WHEEL LOADER MEGA 250-V SHOP MANUAL K1000898E – PDF DOWNLOAD:

IMAGES PREVIEW OF THE MANUAL:

PLEASE NOTE:

• This is the SAME exact manual used by your dealers to fix your vehicle.
• The same can be yours in the next 2-3 mins as you will be directed to the download page immediately after paying for the manual.
• Any queries / doubts regarding your purchase, please feel free to contact [email protected]

R.D