Hitachi ZW250-6 Wheel Loader Workshop Manual (WNEM50-EN-00) – PDF Download

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Hitachi ZW250-6 Wheel Loader Workshop Manual (WNEM50-EN-00)

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Hitachi ZW250-6 Wheel Loader Workshop Manual (WNEM50-EN-00)

• Manual Language:English
• Pages: 852
• Size: 22.8 MB
• Downloadable:Yes
• Format:PDF

HITACHI ZW250-6 WHEEL LOADER WORKSHOP MANUAL (WNEM50-EN-00) – PDF DOWNLOAD:

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Hitachi ZW250-6 Wheel Loader Workshop Manual (WNEM50-EN-00)

• Attach protectors (soft material) on the corners of the load so that the nylon sling does not directly contact the corners. This will prevent the nylon sling from being damaged and the lifted load from slipping.
• Lower the temperature of the lifted load to lower than 100 °C (212 °F). If the temperature of the lifted load is over 100 °C (212 °F), do not lift the load.
• Do not lift acid or alkali chemicals.
• Take care not to allow the sling to become wet. The load may slip.
• When required to use more than one sling, use slings with the same width and length to keep the lifted load balanced.
•  When lifting a load using an eyehole, be sure to eliminate any gaps between the sling and load. (Refer to the right illustration.) Reduce the load weight so that it is less than 80 % of the sling breaking force.
• Avoid using twisted, bound, connected, or hitched slings.
•  Do not place any object on twisted or bent slings. (Refer to the right illustration.)
•  When removing the slings from under the load, take care not to damage the nylon slings. Avoid contact with protrusions.
•  Avoid dragging slings on the ground, throwing slings, or pushing slings with a metal object.
•  When using with other types of slings (wire rope) or accessories (shackle), protect the joint so that the nylon sling is not damaged.
•  Store the nylon slings indoors so that they won’t deteriorate with heat, sun light, or chemicals.

Table Of Contents:

Hitachi ZW250-6 Wheel Loader Workshop Manual (WNEM50-EN-00)

WNEM50-EN-00..........................................................................  1
SECTION 1
GENERAL.....................................................................  3
	Group 1 Precautions for Disassembling and Assembling..............................  5
		Precautions for Disassembling and
Assembling..................................  5
	Group 2 Tightening................................................................ 11
		Tightening Bolts and Nuts..................................................... 11
		Piping Joint.................................................................. 14
	Group 3 Painting.................................................................. 21
	Group 4 Bleeding Air.............................................................. 29
		Bleed Air from the Hydraulic System........................................... 29
		Bleed Air from the Fuel System................................................ 30
		Bleeding Air from Brake (Axle)................................................ 31
	Group 5 Preparation............................................................... 33
		Preparations for Inspection and Maintenance................................... 33
		Releasing Pressure from Front Attachment
Hydraulic Circuit.................... 38
		Releasing Pressure from Ride Control
Accumulator.............................. 39
		Releasing Pressure from Parking Brake
Accumulator............................. 40
		Releasing Pressure from Hydraulic Oil Tank.................................... 41
		Releasing Pressure from Reserve Tank.......................................... 42
SECTION 2
MAINTENANCE STANDARD........................................................ 45
	Group 1 Body...................................................................... 47
		Center Hinge.................................................................. 47
		Pilot Valve (Two Lever Type )................................................. 49
	Group 2 Front Attachment.......................................................... 51
		Pin and Bushing............................................................... 51
		Standard Dimensions for Lift Arm and Bucket................................... 53
		Cylinder...................................................................... 55
SECTION 3
BODY........................................................................ 59
	Group 1 Cab....................................................................... 61
		Removal and Installation of Cab............................................... 61
	Group 2 Counterweight............................................................. 93
		Removal and Installation of Counterweight..................................... 93
	Group 3 Center Hinge.............................................................. 97
		Removal and Installation of Center Hinge...................................... 97
	Group 4 Engine....................................................................123
		Removal and Installation of Engine............................................123
	Group 5 Radiator Assembly.........................................................163
		Removal and Installation of Radiator
Assembly.................................163
	Group 6 Hydraulic Oil Tank........................................................181
		Removal and Installation of Hydraulic Oil
Tank................................181
	Group 7 Fuel Tank.................................................................191
		Removal and Installation of Fuel Tank.........................................191
	Group 8 Pump Device...............................................................203
		Removal and Installation of Pump Device.......................................203
		Disassembly of Pump Device....................................................213
		Assembly of Pump Device.......................................................215
		Disassembly of Main Pump......................................................217
		Assembly of Main Pump.........................................................221
		Disassembly of Regulator......................................................227
		Assembly of Regulator.........................................................229
		Disassembly of Priority Valve.................................................231
		Assembly of Priority Valve....................................................233
		Structure of Pilot Pump.......................................................235
	Group 9 Control Valve.............................................................237
		Removal and Installation of Control Valve.....................................237
		Disassembly of Control Valve..................................................247
		Assembly of Control Valve.....................................................254
	Group 10 Pilot Valve..............................................................263
		Removal and Installation of Pilot Valve
(Single Lever Type)...................263
		Removal and Installation of Pilot Valve (Two
Lever Type)......................271
		Disassembly of Pilot Valve (Single Lever
Type)................................283
		Assembly of Pilot Valve (Single Lever Type)...................................286
		Disassembly of Pilot Valve (Two Lever Type)...................................291
		Assembly of Pilot Valve (Two Lever Type)......................................297
	Group 11 Brake Charge Valve.......................................................305
		Removal and Installation of Brake Charge
Valve................................305
		Structure of Brake Charge Valve...............................................313
		Removal and Installation of Brake
Accumulator.................................315
	Group 12 Manifold Valve...........................................................321
		Removal and Installation of Manifold Valve....................................321
		Disassembly of Manifold Valve.................................................329
		Assembly of Manifold Valve....................................................332
	Group 13 Solenoid Valve...........................................................337
		Removal and Installation of 2-Spool Solenoid
Valve Unit.......................337
		Structure of 2-Spool Solenoid Valve Unit......................................341
		Removal and Installation of Parking Brake
Solenoid Valve Unit.................343
		Structure of Parking Brake Solenoid Valve
Unit................................349
		Structure of Parking Brake Solenoid Valve.....................................351
	Group 14 Flow Regulator Valve.....................................................353
		Removal and Installation of Flow Regulator
Valve..............................353
		Structure of Flow Regulator Valve.............................................357
	Group 15 Cooling Fan System.......................................................359
		Removal and Installation of Fan Valve.........................................359
		Structure of Fan Valve........................................................363
		Removal and Installation of Fan Motor.........................................365
		Structure of Fan Motor........................................................371
		Removal and Installation of Pilot Pump........................................373
		Disassembly of Pilot Pump.....................................................379
		Assembly of Pilot Pump........................................................381
	Group 16 Ride Control Accumulator.................................................385
		Removal and Installation of Ride Control
Accumulator..........................385
	Group 17 Battery Disconnect Switch................................................389
		Removal and Installation of Battery
Disconnect Switch.........................389
	Group 18 Aftertreatment Device....................................................395
		Removal and Installation of Aftertreatment
Device.............................395
	Group 19 DEF Tank.................................................................421
		Removal and Installation of DEF Tank..........................................421
	Group 20 Coolant Control Valve....................................................429
		Removal and Installation of Coolant Control
Valve.............................429
	Group 21 DEF Supply Module........................................................435
		Removal and Installation of DEF Supply
Module.................................435
	Group 22 Exterior Components......................................................439
		Removal and Installation of Exterior
Components...............................439
SECTION 4
TRAVEL SYSTEM...............................................................499
	Group 1 Tire......................................................................501
		Removal and Installation of Front Tire........................................501
		Removal and Installation of Rear Tire.........................................505
	Group 2 Drive Unit................................................................509
		Removal and Installation of Drive Unit........................................509
		Disassembly and Assembly of Drive Unit........................................517
		Removal and Installation of Torque Converter..................................523
		Disassembly and Assembly of Transmission......................................527
		Disassembly and Assembly of Transmission
Control Valve........................577
		Removal and installation of parking brake
(Replace the brake friction pad)....593
	Group 3 Axle......................................................................603
		Removal and Installation of Front Axle........................................603
		Removal and Installation of Rear Axle.........................................613
		Disassembly of Axle...........................................................629
		Assembly of Axle..............................................................645
	Group 4 Propeller Shaft...........................................................671
		Removal and Installation of Propeller Shaft...................................671
	Group 5 Brake Valve...............................................................683
		Removal and Installation of Brake Valve.......................................683
		Disassembly of Brake Valve....................................................689
		Disassembly of Brake Valve....................................................690
		Assembly of Brake Valve.......................................................691
		Assembly of Brake Valve.......................................................692
	Group 6 Steering Device...........................................................695
		Removal and Installation of Steering Pilot
Valve..............................695
		Disassembly of Steering Pilot Valve...........................................701
		Assembly of Steering Pilot Valve..............................................704
		Removal and Installation of Steering Valve
(Without Emergency Steering).......709
		Removal and Installation of Steering Valve (With Emergency Steering)..........717
		Disassembly of Steering Valve.................................................725
		Assembly of Steering Valve....................................................728
		Disassembly of Emergency Steering Check
Block.................................731
		Assembly of Emergency Steering Check
Block....................................733
		Removal and Installation of Steering Cylinder.................................735
		Disassembly of Steering Cylinder..............................................757
		Assembly of Steering Cylinder.................................................761
		Removal and Installation of Steering
Accumulator..............................767
		Removal and Installation of Left Stop Valve...................................771
		Removal and Installation of Right Stop Valve..................................777
		Disassembly of Stop Valve.....................................................783
		Assembly of Stop Valve........................................................784
	Group 7 Emergency Steering Device.................................................785
		Removal and Installation of Emergency
Steering Pump...........................785
SECTION 5
FRONT ATTACHMENT............................................................795
	Group 1 Front Attachment..........................................................797
		Removal and Installation of Front
Attachment..................................797
		Removal and Installation of Bell Crank........................................807
		Removal and Installation of Bucket............................................815
		Removal and Installation of Bushing...........................................819
	Group 2 Cylinder..................................................................823
		Removal and Installation of Lift Arm Cylinder.................................823
		Removal and Installation of Bucket Cylinder...................................831
		Disassembly of Lift Arm Cylinder and Bucket Cylinder..........................843
		Assembly of Lift Arm Cylinder and Bucket Cylinder.............................847

Please Note:

⦁ This is not a physical manual but a digital manual – meaning no physical copy will be couriered to you. The manual can be yours in the next 2 mins as once you make the payment, you will be directed to the download page IMMEDIATELY.
⦁ This is the same manual used by the dealers inorder to diagnose your vehicle of its faults.
⦁ Require some other service manual or have any queries: please WRITE to us at [email protected]