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Hitachi EX33 Mini Excavator Service Repair Manual – PDF DOWNLOAD
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Hitachi EX33 Mini Excavator Service Repair Manual – PDF DOWNLOAD
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Description
Hitachi EX33 Mini Excavator Service Repair Manual – PDF DOWNLOAD
FILE DETAILS:
Hitachi EX33 Mini Excavator Service Repair Manual – PDF DOWNLOAD
Language: English
Pages: 402
Downloadable : Yes
File Type : PDF
IMAGES PREVIEW OF THE MANUAL:
TABLE OF CONTENTS :
Hitachi EX33 Mini Excavator Service Repair Manual – PDF DOWNLOAD
INTRODUCTION......................................................................................... 1 SECTION 1 GENERAL INFORMATION........................................................................ 3 Precautions for Disassembling and Assembling..................................................... 5 Precautions for Disassembling and Assembling................................................. 5 Tightening....................................................................................... 11 Tightening Torque Specification.............................................................. 11 Torque Chart................................................................................. 13 Piping Joint................................................................................. 16 Periodic Replacement of Parts................................................................ 20 SECTION 2 UPPERSTRUCTURE............................................................................. 24 Canopy........................................................................................... 26 Remove and Install Canopy.................................................................... 26 Counterweight.................................................................................... 28 Remove and Install Counterweight............................................................. 28 Pump Device...................................................................................... 32 Remove and Install Pump Device............................................................... 32 Disassemble and Assemble Pump Device......................................................... 34 Maintenance Standard......................................................................... 41 Control Valve.................................................................................... 44 Remove and Install Control Valve............................................................. 44 Disassemble and Assemble Control Valve....................................................... 49 Swing Device..................................................................................... 62 Remove and Install Swing Device.............................................................. 62 Disassemble and Assemble Swing Reduction Gear................................................ 66 Disassemble and Assemble Swing Motor......................................................... 73 Disassemble and Assemble Parking Brake Switch Valve.......................................... 80 Maintenance Standard......................................................................... 82 Pilot Valve...................................................................................... 84 Remove and Install Front Pilot Valve......................................................... 84 Remove and Install Swing Pilot Valve......................................................... 86 Disassemble Front Pilot Valve................................................................ 87 Assemble Front Pilot Valve................................................................... 89 Disassemble Boom Swing Pilot Valve........................................................... 93 Assemble Boom Swing Pilot Valve.............................................................. 95 Solenoid Valve................................................................................... 98 Disassemble and Assemble Pilot Control Shut-Off Lever/ Travel Speed Change Solenoid Valve.... 98 Disassemble and Assemble Pilot Relief Valve..................................................101 SECTION 3 UNDERCARRIAGE..............................................................................106 Swing Bearing....................................................................................108 Remove and Install Swing Bearing.............................................................108 Travel Device....................................................................................110 Remove and Install Travel Device.............................................................110 Disassemble and Assemble Travel Device.......................................................113 Maintenance Standard.........................................................................133 Center Joint.....................................................................................136 Remove and Install Center Joint..............................................................136 Disassemble Center Joint.....................................................................139 Assemble Center Joint........................................................................141 Track Adjuster...................................................................................144 Remove and Install Track Adjuster............................................................144 Front Idler......................................................................................146 Remove and Install Front Idler...............................................................146 Maintenance Standard.........................................................................147 Upper and Lower Roller...........................................................................148 Remove and Install Upper Roller..............................................................148 Remove and Install Lower Roller..............................................................150 Maintenance Standard.........................................................................152 Track............................................................................................154 Remove and Install Rubber Crawler............................................................154 Maintenance Standard.........................................................................156 SECTION 4 FRONT ATTACHMENT...........................................................................164 Front Attachment.................................................................................166 Remove and Install Front Attachment..........................................................166 Maintenance Standard.........................................................................171 Cylinder.........................................................................................176 Remove and Install Cylinders.................................................................176 Disassemble Cylinder.........................................................................183 Assemble Cylinders...........................................................................189 Tightening Torque Specifications.............................................................195 Maintenance Standard.........................................................................196 SECTION 5 ENGINE.....................................................................................200 Safety Instructions..............................................................................206 Specifications...................................................................................212 Performance Curves...............................................................................218 Dimensions.......................................................................................221 M. Mechanism.....................................................................................222 F. Feature...................................................................................223 1. Engine Body...............................................................................225 [1] Cylinder Block.......................................................................225 [2] Cylinder Head........................................................................225 [3] Crank Shaft..........................................................................227 [4] Piston and Piston Rings..............................................................227 [5] Connectine Rod.......................................................................227 [6] Camshaft.............................................................................229 [7] Flywheel.............................................................................229 [8] Rocker Arm...........................................................................229 2. Lubricating System........................................................................231 [1] General..............................................................................231 [2] Oil Pump.............................................................................233 [3] Relief Valve.........................................................................233 [4] Oil Filter Cartridge.................................................................235 [5] Oil Pressure Switch..................................................................235 3. Cooling System............................................................................237 [1] General..............................................................................237 [2] Water Pump...........................................................................237 [3] Thermostat...........................................................................239 [4] Radiator.............................................................................239 [5] Radiator Cap.........................................................................239 4. Intake/Exhaust System.....................................................................241 [1] Air Cleaner..........................................................................241 [2] Muffler..............................................................................241 5. Fuel System...............................................................................243 [1] General..............................................................................243 [2] Injection Pump.......................................................................243 [3] Injection Nozzle.....................................................................249 [4] Fuel Filter..........................................................................249 [5] Fuel Lift Pump.......................................................................251 [6] Governor.............................................................................253 6. Electrical System.........................................................................257 [1] Charging System......................................................................257 S. Disassembling and Servicing...................................................................259 G. General...................................................................................260 [1] Engine Identification................................................................260 [2] General Precautions..................................................................262 [3] Tightening Torques...................................................................264 [4] Troubleshooting......................................................................267 [5] Servicing Specifications.............................................................275 [6] Maintenance Check List...............................................................291 [7] Check and Maintenance................................................................294 [8] Special Tools........................................................................304 1. Engine Body...............................................................................312 Checking and Adjusting ..................................................................312 Disassembling and Assembling.............................................................314 [1] Draining Water and Oil...........................................................314 [2] External Components..............................................................314 [3] Cylinder Head and Valves.........................................................316 [4] Gear Case........................................................................318 [5] Piston and Connecting Rod........................................................326 [6] Flywheel and Crankshaft..........................................................330 Servicing................................................................................332 [1] Cylinder Head....................................................................332 [2] Timing Gear and Camshaft.........................................................340 [3] Piston and Connecting Rod........................................................344 [4] Crankshaft.......................................................................348 [5] Cylinder Bore....................................................................356 2. Lubricating System........................................................................358 Checking.................................................................................358 Servicing................................................................................358 [1] Oil Pump.........................................................................358 3. Cooling System............................................................................360 Checking.................................................................................360 [1] Fan Belt.........................................................................360 [2] Radiator.........................................................................360 Disassembling and Assembling.............................................................362 4. Fuel System...............................................................................364 Checking and Adjusting...................................................................364 [1] Injection Pump...................................................................364 [2] Injection Nozzle.................................................................366 Disassembling and Assembling.............................................................368 [1] Injection Pump...................................................................368 [2] Injection Nozzle.................................................................368 5. Electrical System.........................................................................370 Checking.................................................................................370 [1] Starter..........................................................................370 [2] Glow Plug........................................................................370 [3] Standard-Alternator and regulator................................................372 [4] Compact type (equipped with IC regulator)........................................380 Disassembling and Asembling..............................................................382 [1] Starter..........................................................................382 [2] Alternator.......................................................................384 Servicing................................................................................392 [1] Starter..........................................................................392 [2] Alternator.......................................................................396 REQUEST FORM.........................................................................................402
DESCRIPTION:
Hitachi EX33 Mini Excavator Service Repair Manual – PDF DOWNLOAD
TO THE READER:
• This manual is written for an experienced technician to provide technical information needed to maintain and repair this machine.
• Be sure to thoroughly read this manual for correct product information and service procedures.
• If you have any questions or comments, at if you found any errors regarding the contents of this manual, please contact using “Service Manual Revision Request Form” at the end of this manual. (Note: Do not tear off the form. Copy it for usage.): Publications Marketing & Product Support Hitachi Construction Machinery Co. Ltd. TEL: 81-298-32-7173 FAX: 81-298-31-1162
MANUAL COMPOSITION:
• This manual consists of two portions: the Technical Manual and the Workshop Manual. Use the manuals according to purpose.
• Information included in the Technical Manual: technical information needed for redelivery and delivery, operation and activation of all devices and systems, operational performance tests, and troubleshooting procedures.
• Information included in the Workshop Manual: technical information needed for maintenance and repair of the machine, tools and devices needed for maintenance and repair, maintenance standards, and removal/installation and assemble/ disassemble procedures.
G.B 23/04/25
