John Deere 250GLC Excavator Repair Service Manual - TM12177
Complete Repair service manual for John Deere 250GLC Excavator, with all the technical information to maintain, repair, and rebuild like professional mechanics.
John Deere 250GLC Excavator workshop service repair manual includes:
* Numbered table of contents easy to use so that you can find the information you need fast.
* Detailed sub-steps expand on repair procedure information
* Numbered instructions guide you through every repair procedure step by step.
* Troubleshooting and electrical service procedures are combined with detailed wiring diagrams for ease of use.
* Notes, cautions and warnings throughout each chapter pinpoint critical information.
* Bold figure number help you quickly match illustrations with instructions.
* Detailed illustrations, drawings and photos guide you through every procedure.
* Enlarged inset helps you identify and examine parts in detail.
TM12177 - 250GLC Excavator Technical Manual (Repair).pdf
TM12177 - 250GLC Excavator Technical Manual (Repair).epub
PRODUCT DETAILS:
Total Pages: 662 pages
File Format: PDF (Windows & Mac & Linux)
Language: English
Covered models:
250GLC (PIN: 1FF250GX__E608001-; 1FF250GX__D608001-;1FF250GX__C608001-)
Foreword
Technical Information Feedback Form
General Information
Safety
Torque Values
Tracks
Track System
Axles, Differentials and Suspension Systems
Axle Shaft, Bearings, and Reduction Gears
Hydraulic System
Engine
Removal and Installation
Engine Auxiliary System
Cooling Systems
Intake System
External Exhaust System
External Fuel Supply Systems
Damper Drive (Flex Coupling)
Elements
Frame or Supporting Structure
Frame Installation
Chassis Weights
Operator`s Station
Removal and Installation
Operator Enclosure
Seat and Seat Belt
Heating and Air Conditioning
Excavator
Buckets
Frames
Hydraulic System
Swing or Pivoting System
Mechanical Drive Elements
Hydraulic System
Dealer Fabricated Tools
TABLE OF CONTENTS...1
Section 00: General Information...11
Group 0001: Safety...11
Recognize Safety Information...14
Follow Safety Instructions...15
Operate Only If Qualified...16
Wear Protective Equipment...17
Avoid Unauthorized Machine Modifications...18
Add Cab Guarding For Special Uses...19
Inspect Machine...20
Stay Clear of Moving Parts...21
Avoid High-Pressure Fluids...22
Avoid High-Pressure Oils...23
Work In Ventilated Area...24
Prevent Fires...25
Prevent Battery Explosions...26
Handle Chemical Products Safely...27
Decommissioning — Proper Recycling and Disposal of Fluids and Components...28
Exhaust Filter Ash Handling and Disposal...29
Prepare for Emergencies...30
Clean Debris from Machine...31
Use Steps and Handholds Correctly...32
Start Only From Operator's Seat...33
Use and Maintain Seat Belt...34
Prevent Unintended Machine Movement...35
Avoid Work Site Hazards...36
Keep Riders Off Machine...38
Avoid Backover Accidents...39
Inspect and Maintain ROPS...40
Avoid Machine Tip Over...41
Use Special Care When Lifting Objects...43
Add and Operate Attachments Safely...44
Park and Prepare for Service Safely...45
Service Cooling System Safely...46
Remove Paint Before Welding or Heating...47
Make Welding Repairs Safely...48
Drive Metal Pins Safely...49
Clean Exhaust Filter Safely...50
Group 0003: Torque Values...12
Metric Bolt and Cap Screw Torque Values...55
Additional Metric Cap Screw Torque Values...57
Unified Inch Bolt and Cap Screw Torque Values...59
Service Recommendations for 37° Flare and 30° Cone Seat Connectors...61
Service Recommendations for O-Ring Boss Fittings...63
Service Recommendations for Flared Connections—Straight or Tapered Threads...65
Service Recommendations for Flat Face O-Ring Seal Fittings...67
O-Ring Boss Fittings In Aluminum Housing Service Recommendations—Excavators...69
O-Ring Face Seal Fittings With SAE Inch Hex Nut and Stud End for High-Pressure Service Recommendations...72
O-Ring Face Seal Fittings With Metric Hex Nut and Stud End for Standard Pressure Service Recommendations...74
O-Ring Face Seal Fittings With Metric Hex Nut and Stud End for High-Pressure Service Recommendations...77
Service Recommendations for Metric Series Four Bolt Flange Fitting...80
Service Recommendations For Inch Series Four Bolt Flange Fittings...82
Inch Series Four Bolt Flange Fitting for High-Pressure Service Recommendations...84
Service Recommendations For Non-Restricted Banjo (Adjustable) Fittings...86
Service Recommendations For O-Ring Boss Fittings With Shoulder...89
Metric 24° O-Ring Seal DIN 20078 Service Recommendations...92
Section 01: Tracks...96
Group 0130: Track System...96
Track Roller Remove and Install...101
Track Roller Disassemble and Assemble...105
Track Roller Pressure Test...107
Track Carrier Roller Remove and Install...110
Metal Face Seals Repair...113
Track Shoe Remove and Install...115
Track Chain Remove and Install...118
Track Chain Disassemble and Assemble...125
Track Chain Repair...127
Sprocket Remove and Install...130
Front Idler Remove and Install...132
Front Idler Disassemble and Assemble...133
Track Adjuster and Recoil Spring Remove and Install...136
Track Adjuster and Recoil Spring Disassemble and Assemble...137
Track Adjuster Cylinder Disassemble and Assemble...143
Section 02: Axles, Differentials and Suspension Systems...145
Group 0250: Axle Shaft, Bearings, and Reduction Gears...145
Travel Gear Case Remove and Install...150
Travel Gear Case Disassemble and Assemble...154
Group 0260: Hydraulic System...145
Travel Motor and Park Brake Remove and Install...163
Travel Motor and Park Brake Disassemble and Assemble...164
Park Brake Valve Disassemble and Assemble...169
Travel Motor and Park Brake Start-Up Procedure...172
Section 04: Engine...173
Group 0400: Removal and Installation...173
Engine Remove and Install...193
Section 05: Engine Auxiliary System...212
Group 0510: Cooling Systems...212
Radiator Remove and Install...218
Hydraulic Oil Cooler Remove and Install...223
Charge Air Cooler Remove and Install...229
Fuel Cooler Remove and Install...234
Cooling Package Remove and Install...236
Fan, Fan Guard, and Fan Shroud Remove and Install...244
Serpentine Belt Remove and Install...254
Coolant Surge Tank Remove and Install...255
Group 0520: Intake System...212
Air Cleaner Remove and Install...259
Group 0530: External Exhaust System...212
Exhaust Tube Remove and Install...263
JDG11335 Bellows Alignment Fixture...265
Exhaust Bellows Alignment Procedure...272
Diesel Particulate Filter (DPF) Remove and Install...277
Exhaust Filter Remove and Install...280
Group 0560: External Fuel Supply Systems...212
Fuel Tank Remove and Install...286
Primary Fuel Filter and Water Separator Remove and Install...289
Final Fuel Filter Remove and Install...291
Auxiliary Fuel Filter Remove and Install (If Equipped)...292
Section 07: Damper Drive (Flex Coupling)...293
Group 0752: Elements...293
Damper Drive (Flex Coupling) Remove and Install...296
Section 17: Frame or Supporting Structure...298
Group 1740: Frame Installation...298
Welding On Machine...301
Welding Repair of Major Structure...303
Group 1749: Chassis Weights...298
Counterweight Remove and Install...308
Section 18: Operator's Station...311
Group 1800: Removal and Installation...311
Cab Remove and Install...320
Group 1810: Operator Enclosure...311
Windshield Remove and Install...330
Windshield Disassemble and Assemble...332
Sliding Windows Remove and Install...342
Windowpanes Remove and Install...344
Windowpanes Dimensions...345
Group 1821: Seat and Seat Belt...311
Seat Remove and Install...355
Seat Belt Remove and Install...357
Mechanical Suspension Seat Disassemble and Assemble...359
Air Suspension Seat Disassemble and Assemble...361
Left and Right Console Covers Remove and Install...363
Group 1830: Heating and Air Conditioning...311
Refrigerant Cautions and Proper Handling...373
Flush and Purge Air Conditioner System...374
R134a Refrigerant Oil Information...378
R134a Refrigerant Recovery, Recycling, and Charging Station Installation Procedure...380
R134a Compressor Oil Charge Check...382
R134a Compressor Oil Removal...384
Recover R134a Refrigerant...385
Evacuate R134a System...386
Charge R134a System...388
Compressor Remove and Install...390
Condenser Remove and Install...392
Heater and Air Conditioner Remove and Install...394
Receiver-Dryer Remove and Install...399
Section 33: Excavator...400
Group 3302: Buckets...400
Bucket Remove and Install...414
Adjust Bucket Pivot End Play...406
Bucket Pin-Up Data...408
Group 3340: Frames...400
Bucket Links Remove and Install...412
Bucket Remove and Install...414
Arm Remove and Install...415
Boom Remove and Install...418
Inspect Pins, Bushings, and Bosses—Front Attachment...424
Cylinder Specifications...427
Bushings and Seal Remove and Install...428
Group 3360: Hydraulic System...400
Apply Vacuum to Hydraulic Oil Tank...432
General Hydraulic Oil Clean-up Procedure...434
Pump 1 and 2 Remove and Install...435
Pump 1 and 2 Disassemble and Assemble...439
Pump 1 and 2 Inspection...452
Pump 1 and 2 Start-Up Procedure...457
Pump 1 and 2 Regulator Remove and Install...459
Pump 1 and 2 Regulator Disassemble and Assemble...461
Pilot Pump Remove and Install...464
Pilot Pump Disassemble and Assemble...466
Pilot Pressure Regulating Valve and Filter Remove and Install...468
Pilot Pressure Regulating Valve and Filter Disassemble and Assemble...470
Pilot Shutoff Solenoid Valve Remove and Install...472
Pilot Shutoff Solenoid Valve Disassemble and Assemble...475
Fan Drive Pump Remove and Install...477
Fan Drive Motor Remove and Install...479
Fan Drive Motor Disassemble and Assemble...483
Fan Drive Motor Solenoid Valves Remove and Install...486
Solenoid Valve Manifold Remove and Install...488
Solenoid Valve Remove and Install—Power Dig (SG), Travel Speed (SI), Arm Regenerative (SC), and Dig Regenerative (SF) Valves...490
Solenoid Valve Disassemble and Assemble—Power Dig (SG), Travel Speed (SI), Arm Regenerative (SC), and Dig Regenerative (SF) Valves...492
Pilot Valve (Left and Right) Remove and Install...494
Pilot Valve (Left and Right) Disassemble and Assemble...496
Travel Pilot Valve Remove and Install...500
Travel Pilot Valve Disassemble and Assemble...503
Pilot Signal Manifold Remove and Install...507
Pilot Signal Manifold Disassemble and Assemble...509
Control Valve Remove and Install...512
Control Valve Halves Disassemble and Assemble...517
Control Valve (5-Spool) Disassemble and Assemble...519
Control Valve (4-Spool) Disassemble and Assemble...530
Hydraulic Oil Tank Remove and Install...540
Hydraulic Oil Tank Disassemble and Assemble...544
Restriction Valve Remove and Install...548
Hydraulic Oil Cooler Bypass Valve Remove and Install...551
Boom Cylinder Remove and Install...553
Boom Cylinder Disassemble and Assemble...559
Arm Cylinder Remove and Install...563
Arm Cylinder Disassemble and Assemble...567
Bucket Cylinder Remove and Install...572
Bucket Cylinder Disassemble and Assemble...575
Hydraulic Cylinder Bleed Procedure...579
Section 43: Swing or Pivoting System...580
Group 4350: Mechanical Drive Elements...580
Swing Gear Case Remove and Install...584
Swing Gear Case Disassemble and Assemble...587
Swing Gear Case Start-Up Procedure...601
Upperstructure Remove and Install...602
Swing Bearing Remove and Install...606
Swing Bearing Disassemble and Assemble...608
Swing Bearing Upper Seal Install...612
Swing Bearing Lower Seal Install...613
Group 4360: Hydraulic System...580
Center Joint Remove and Install...618
Center Joint Disassemble and Assemble...621
Center Joint Air Test...624
Swing Motor and Park Brake Remove and Install...625
Swing Motor and Park Brake Disassemble...628
Swing Motor and Park Brake Inspection...631
Swing Motor and Park Brake Assemble...635
Swing Motor and Park Brake Start-Up Procedure...638
Crossover Relief Valve and Make-Up Check Valve Remove and Install...639
Make-Up Check Valve Disassemble and Assemble...641
Swing Park Brake Check Valve and Orifice Remove and Install...643
Section 99: Dealer Fabricated Tools...645
Group 9900: Dealer Fabricated Tools...645
DF1063 Lift Bracket...648
ST4920 Track Recoil Spring Disassembly and Assembly Tool...650
DFT1087 Track Recoil Spring Disassembly and Assembly Guard Tool...654
DFT1110 Spacer...655
DFT1130 Adapter...656
DFT1036A Travel Gearbox Nut Wrench...657
DF1038 Torque Adapter...658
DFT1109 Holding Bar...659
Center Joint (Rotary Manifold) Lifting Tool...660
DFT1144 Guide Pin...661
DFT1119 Pump Support...662
DFT1351 Swing Gear Case Nut Spanner Wrench...663
John Deere 250GLC Excavator Repair Service Manual - TM12177
