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John Deere 240DLC & 270DLC Excavator Repair TECHNICAL MANUAL TM2323 – PDF DOWNLOAD
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John Deere 240DLC & 270DLC Excavator Repair TECHNICAL MANUAL TM2323 – PDF DOWNLOAD
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Description
John Deere 240DLC & 270DLC Excavator Repair TECHNICAL MANUAL TM2323 – PDF DOWNLOAD
FILE DETAILS:
John Deere 240DLC & 270DLC Excavator Repair TECHNICAL MANUAL TM2323 – PDF DOWNLOAD
Language : English
Pages :342
Downloadable : Yes
File Type : PDF
IMAGES PREVIEW OF THE MANUAL:
DESCRIPTION:
John Deere 240DLC & 270DLC Excavator Repair TECHNICAL MANUAL TM2323 – PDF DOWNLOAD
Foreword
- This manual is written for an experienced technician. Essential tools required in performing certain service work are identified in this manual and are recommended for use. Live with safety: Read the safety messages in the introduction of this manual and the cautions presented throughout the text of the manual.
- This is the safetyalert symbol. When you see this symbol on the machine or in this manual, be alert to the potential for personal injury. Technical manuals are divided in two parts: repair and operation and tests. Repair sections tell how to repair the components.
- Operation and tests sections help you identify the majority of routine failures quickly. Information is organized in groups for the various components requiring service instruction. At the beginning of each group are summary listings of all applicable essential tools, service equipment and tools, other materials needed to do the job, service parts kits, specifications, wear tolerances, and torque values.
- Technical Manuals are concise guides for specific machines. They are onthejob guides containing only the vital information needed for diagnosis, analysis, testing, and repair. Fundamental service information is available from other sources covering basic theory of operation, fundamentals of troubleshooting, general maintenance, and basic type of failures and their causes.
TABLE OF CONTENTS:
John Deere 240DLC & 270DLC Excavator Repair TECHNICAL MANUAL TM2323 – PDF DOWNLOAD
Contents 5
General Information 7
Safety 9
Recognize Safety Information 9
Follow Safety Instructions 9
Operate Only If Qualified 9
Wear Protective Equipment 10
Avoid Unauthorized Machine Modifications 10
Add Cab Guarding for Special Uses 10
Inspect Machine 11
Stay Clear of Moving Parts 11
Avoid High-Pressure Oils 11
Beware of Exhaust Fumes 12
Prevent Fires 12
Prevent Battery Explosions 12
Handle Chemical Products Safely 13
Dispose of Waste Properly 13
Prepare for Emergencies 13
Use Steps and Handholds Correctly 13
Start Only From Operator’s Seat 14
Use and Maintain Seat Belt 14
Prevent Unintended Machine Movement 14
Avoid Work Site Hazards 15
Keep Riders Off Machine 15
Avoid Backover Accidents 16
Avoid Machine Tip Over 16
Use Special Care When Lifting Objects 17
Add and Operate Attachments Safely 17
Park and Prepare for Service Safely 17
Service Cooling System Safely 18
Remove Paint Before Welding or Heating 18
Make Welding Repairs Safely 18
Drive Metal Pins Safely 18
Torque Values 19
Metric Bolt and Cap Screw Torque Values 19
Additional Metric Cap Screw Torque Values 20
Unified Inch Bolt and Cap Screw Torque Values 21
Service Recommendations for 37° Flare and 30° Cone Seat Connecto 22
Service Recommendations for O-Ring Boss Fittings 22
O-Ring Boss Fittings In Aluminum Housing Service Recommendations 24
Service Recommendations For Flared Connections—Straight or Taper 25
Service Recommendations For Flat Face O-Ring Seal Fittings 26
O-Ring Face Seal Fittings With SAE Inch Hex Nut And Stud End For 27
O-Ring Face Seal Fittings With Metric Hex Nut And Stud End For S 29
O-Ring Face Seal Fittings With Metric Hex Nut And Stud End For H 31
Service Recommendations for Metric Series Four Bolt Flange Fitti 33
Service Recommendations For Inch Series Four Bolt Flange Fitting 34
Inch Series Four Bolt Flange Fitting For High Pressure Service R 35
Service Recommendations For Non-Restricted Banjo (Adjustable) Fi 36
Service Recommendations For O-Ring Boss Fittings With Shoulder 37
Metric 24° O-Ring Seal DIN 20078 Service Recommendations 39
Tracks 41
Track System 43
Track Roller Remove and Install 43
Track Roller Disassemble and Assemble 45
Track Roller Pressure Test 46
Track Carrier Roller Remove and Install 46
Metal Face Seals Repair 48
Track Shoe Remove and Install 49
Track Chain Remove and Install 50
Track Chain Disassemble and Assemble 52
Track Chain Repair 55
Sprocket Remove and Install 57
Front Idler Remove and Install 57
Front Idler Disassemble and Assemble 58
Track Adjuster and Recoil Spring Remove and Install 60
Track Adjuster and Recoil Spring Disassemble and Assemble 61
Track Adjuster Cylinder Disassemble and Assemble 65
Axles, Differentials and Suspension Systems 67
Axle Shaft, Bearings, and Reduction Gears 69
Travel Gearbox Remove and Install 69
Travel Gearbox Disassemble and Assemble—240DLC 70
Travel Gearbox Disassemble and Assemble—270DLC 74
Hydraulic System 77
Travel Motor and Park Brake Remove and Install—240DLC 77
Travel Motor and Park Brake Remove and Install—270DLC 80
Travel Motor and Park Brake Disassemble and Assemble—240DLC 84
Travel Motor and Park Brake Disassemble and Assemble—270DLC 86
Travel Motor Cover Disassemble and Assemble—240DLC 88
Travel Motor Cover Disassemble and Assemble—270DLC 90
Travel Motor Start-Up Procedure 91
Engine 93
Removal and Installation 95
Engine Remove and Install 95
Fuel Injection Pump Remove and Install103
Starter Motor Remove and Install103
Engine Auxiliary System105
Cooling System107
Radiator Remove and Install107
Oil Cooler Remove and Install110
Charge Air Cooler Remove and Install113
Fan Drive Motor Remove and Install114
Fan, Fan Guard, and Fan Shroud Remove and Install116
Serpentine Belt Remove and Install118
Coolant Surge Tank Remove and Install118
Fan Drive Pump Remove and Install119
Fan Speed Solenoid Valve Remove and Install120
Intake System122
Air Cleaner Remove and Install122
External Fuel Supply System125
Fuel Tank Remove and Install125
Primary Fuel Filter (Water Separator) Remove and Install126
Final Fuel Filter Remove and Install127
Dampener Drive (Flex Coupling)129
Elements131
Dampener Drive (Flex Coupling) Remove and Install131
Frame or Supporting Structure133
Frame Installation135
Welding On Machine135
Welding Repair of Major Structure136
Chassis Weights137
Counterweight Remove and Install137
Operator’s Station139
Removal and Installation141
Cab Remove and Install141
Operator Enclosure149
Windowpane and One Piece Molding Remove and Install149
Sliding Windows Remove and Install150
Windowpanes Remove and Install150
Seat and Seat Belt151
Seat Remove and Install151
Seat Belt Remove and Install154
Mechanical Suspension Seat Disassemble and Assemble155
Air Suspension Seat Disassemble and Assemble156
Heating and Air Conditioning157
Refrigerant Cautions and Proper Handling157
R134a Compressor Oil Charge Check157
R134a Compressor Oil Removal158
R134a Refrigerant Oil Information158
R134a Refrigerant Recovery/Recycling and Charging Station Instal159
Recover R134a Refrigerant159
Evacuate R134a System160
Charge R134a System161
Compressor Remove and Install161
Receiver-Dryer Remove and Install162
Air Conditioner and Heater Remove and Install164
Condenser Remove and Install165
Excavator167
Buckets169
Bucket Remove and Install169
Adjust Bucket Pivot End Play171
Bucket Pin-Up Data172
Frames175
Bucket Links Remove and Install175
Arm Remove and Install177
Boom Remove and Install180
Inspect Pins, Bushings and Bosses—Front Attachment184
Bushings and Seal Remove and Install187
Hydraulic System189
Apply Vacuum to Hydraulic Oil Tank189
Hydraulic Oil Cleanup Procedure Using Portable Filter Caddy190
Pump 1 and 2 Remove and Install191
Pump 1 and 2 Disassemble and Assemble194
Pump 1 and 2 Inspection201
Pump 1 and 2 Start-Up Procedure204
Pump 1 and 2 Regulator Remove and Install205
Pump 1 and 2 Regulator Disassemble and Assemble206
Pilot Pump Remove and Install208
Pilot Pump Disassemble and Assemble210
Pilot Pump Drive Shaft Remove and Install212
Pilot Pressure Regulating Valve and Filter Remove and Install212
Pilot Pressure Regulating Valve and Filter Disassemble and Assem213
Pilot Shut-Off Solenoid Valve Remove and Install214
Pilot Shut-Off Solenoid Valve Disassemble and Assemble216
Solenoid Valve Remove and Install—Power Digging (Port SG), Trave217
Solenoid Valve Disassemble and Assemble—Power Digging (Port SG),219
Torque Control and Pump Flow Rate Limit Solenoid Valve Remove an220
Left and Right Pilot Valve Remove and Install220
Left and Right Pilot Valve Disassemble and Assemble226
Travel Pilot Control Valve Remove and Install228
Travel Pilot Control Valve Disassemble and Assemble229
Pilot Signal Manifold Remove and Install231
Pilot Signal Manifold Disassemble and Assemble232
Control Valve Remove and Install235
Left Control Valve (5-Spool) Disassemble and Assemble237
Right Control Valve (4-Spool) Disassemble and Assemble244
Hydraulic Oil Tank Remove and Install250
Hydraulic Oil Tank Disassemble and Assemble252
Oil Cooler Bypass Valve Remove and Install253
Boom Cylinder Remove and Install255
Boom Cylinder Disassemble and Assemble—240DLC258
Boom Cylinder Disassemble and Assemble—270DLC260
Arm Cylinder Remove and Install262
Arm Cylinder Disassemble and Assemble—240DLC266
Arm Cylinder Disassemble and Assemble—270DLC269
Bucket Cylinder Remove and Install271
Bucket Cylinder Disassemble and Assemble—240DLC274
Bucket Cylinder Disassemble and Assemble—270DLC276
Hydraulic Cylinder Bleed Procedure278
Swing or Pivoting System279
Mechanical Drive Elements281
Swing Gearbox Remove and Install281
Swing Gearbox Disassemble and Assemble284
Swing Gearbox Start-Up Procedure288
Swing Bearing Remove and Install289
Swing Bearing Disassemble and Assemble290
Swing Bearing Upper Seal Install293
Swing Bearing Lower Seal Install293
Upperstructure Remove and Install294
Hydraulic System297
Center Joint Remove and Install297
Center Joint Disassemble and Assemble299
Center Joint Air Test300
Swing Motor and Park Brake Remove and Install300
Swing Motor and Park Brake Disassemble—240DLC302
Swing Motor and Park Brake Assemble—240DLC304
Swing Motor and Park Brake Disassemble—270DLC306
Swing Motor and Park Brake Assemble—270DLC308
Swing Motor and Park Brake Inspection310
Swing Motor and Park Brake Start-Up Procedure313
Crossover Relief Valve and Make-Up Check Valve Remove and Instal313
Make-Up Check Valve Disassemble and Assemble314
Swing Dampener Valve Remove and Install315
Swing Park Brake Check Valve and Orifice Remove and Install—270D318
Dealer Fabricated Tools319
Dealer Fabricated Tools321
DF1063 Lift Bracket321
ST4920 Track Recoil Spring Disassembly and Assembly Tool323
DFT1087 Track Recoil Spring Disassembly and Assembly Guard Tool327
DFT1110 Spacer328
DFT1130 Adapter329
Center Joint Lifting Tool330
DFT1119 Pump Support331
DFT1220 Swing Gearbox Nut Spanner Wrench332
DFT1305 Travel Gearbox Nut Wrench333
Page Number 5
Section 00 7
Group 01 9
Group 0003 19
Section 01 41
Group 0130 43
Section 02 67
Group 0250 69
Group 0260 77
Section 04 93
Group 0400 95
Section 05105
Group 0510107
Group 0520122
Group 0560125
Section 07129
Group 0752131
Section 17133
Group 1740135
Group 1749137
Section 18139
Group 1800141
Group 1810149
Group 1821151
Group 1830157
Section 33167
Group 3302169
Group 3340175
Group 3360189
Section 43279
Group 4350281
Group 4360297
Section 99319
Group 9900321
S.M 6/1/25
