John Deere Combines W230 (4LZ-7, 4LZ-8) Diagnosis and Repair Service Manual (TM702819)
Complete Diagnostics and Repair manual for John Deere W230 (4LZ-7, 4LZ-8) Combine (SN.015000-), with workshop information to maintain, diagnose, repair, and rebuild like professional mechanics.
John Deere Combines W230 (4LZ-7, 4LZ-8) workshop Diagnosis Repair Test Operation Service 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.
John Deere Combines W230 (4LZ-7, 4LZ-8) Diagnosis and Repair Service Manual (TM702819)
TM702819 - John Deere W230 (4LZ-7,4LZ-8) Combine (SN.015000-) Technical Manual (Diagnosis_Repair_Test_Operation_Service).PDF
TM702819 - John Deere W230 (4LZ-7,4LZ-8) Combine (SN.015000-) Technical Manual (Diagnosis_Repair_Test_Operation_Service).epub
Total Pages: 1,141 pages
File Format: PDF/EPUB/MOBI/AZW (PC/Mac/Android/Kindle/iPhone/iPad; bookmarked, ToC, Searchable, Printable)
Language: English
MAIN SECTIONS
Foreword
General Information
Safety
Identification and Specifications
Tune-Up and Adjustment
Fuels, Lubricants, and Coolants
Delivery and Storage Instructions
Engine
Engine
Cooling System
Fuel and Air Intake Systems
Fuel System
Air Intake System
Electrical System
Battery
Fuses and Relays
Operators Station
Sensors and Switches
Alternator and Voltage Regulator
Starting Motor and Starting Relay
Ground Drive
Variable Speed
Clutch
Transmission and Differential
Final Drive
Brakes, Steering and Rear Axle
Brakes
Steering
Rear Axle
Hydraulic System
Hydraulic Reservoir
Hydraulic Pumps
Hydraulic Valves
Hydraulic Cylinders
Accumulator
Hydrostatic Motor
Miscellaneous
Shafts and Bearings
Operator Station Repair
System Components
Cab
Feeder House
Feeder House-Removing and Installing
Feeder House-Adjustments
Threshing Separation and Grain Cleaning
Cylinder and Concave
Separator Drive
Beater
Cleaning
Straw Walkers and Walker Tine Separator
Residue Disposal
Elevator, Grain Tank, and Unloading
Elevators and Augers
Electrical Diagnostic
General References
Theory of Operation
Schematics
Diagnostics
Electrical Components - Connectors
Electrical Components
Hydraulic Diagnostics
Hydraulic System Specification
Theory of Operation
Schematics
Diagnostics
Hydraulic Components
Using Instruction
Symbol Reference
Hydraulic-A Component
Hydraulic-C Components
Hydraulic-F Component
Hydraulic-G Components
Hydraulic-M Component
Hydraulic-O Components
Hydraulic-P Components
Hydraulic-R Components
Hydraulic-V Components
Hydraulic-X Components
TABLE OF CONTENTS................1
Section 10: General Information................23
Group 05: Safety................23
Recognize Safety Information................27
Follow Safety Instructions................28
Understand Signal Words................29
Driving the Machine................30
Parking and Leaving the Machine................31
Keep Riders Off Machine................32
Avoid Electrical Power Lines................33
Handle Fuel Safely—Avoid Fires................34
Install All Guards................35
Service Cooling System Safely................36
Prevent Battery Explosions................37
Handling Batteries Safely................38
Prevent Acid Burns................40
Avoid Heating Near Pressurized Fluid Lines................42
Wear Protective Clothing................43
Use Proper Lifting Equipment................44
Stay Clear of Rotating Drivelines................45
Tightening Wheel Retaining Bolts/Nuts................46
Keep Hands Away From Knives................47
Cleaning Grain Tank and Removal of Blockages Safely................48
Stay Clear of Harvesting Units................49
Unloading Auger Transport Position................50
Stay Away From Straw Chopper................51
Handle Fluids Safely—Avoid Fires................52
Prepare for Emergencies................53
Avoid High-Pressure Fluids................54
Park Machine Safely................55
Support Machine Properly................56
Service Machines Safely................57
Work In Ventilated Area................58
Illuminate Work Area Safely................59
Protect Against Noise................60
Work in Clean Area................61
Use Proper Tools................62
Decommissioning — Proper Recycling and Disposal of Fluids and Components................63
Remove Paint Before Welding or Heating................64
Use Safety Lights and Devices................65
Live With Safety................66
Servicing Electronic Control Units................67
Welding Near Electronic Control Units................68
Group 10: Identification and Specifications................691
Specifications................691
Combine Dimensions................79
Identification Numbers................80
Metric Bolt and Screw Torque Values................82
Unified Inch Bolt and Screw Torque Values................84
Face Seal Fittings Assembly and Installation—All Pressure Applications................86
Metric Face Seal Fitting Torque Chart Standard Pressure Applications................87
Group 15: Tune-Up and Adjustment................24
Storing Belts................90
Inspect Belts................91
Remove and Install Belts................94
Align Sheaves................96
Chain Maintenance................97
Safety Cotter Pin................98
Drive Chains—Connecting Link................99
Group 20: Fuels, Lubricants, and Coolants................24
Diesel Fuel................102
Hydraulic Oil................104
Gear Oil................105
Transmission................106
Gear Oil Information................107
Multipurpose Grease................108
Diesel Engine Coolant (engine with wet sleeve cylinder liners)................109
Group 25: Delivery and Storage Instructions................25
Combine Temporary Storage Instructions................112
Prepare Combine For Railroad Delivery................113
Pre-Delivery Inspection................114
Section 20: Engine................116
Group 05: Engine................116
Essential Tools................118
John Deere Engine Repair—Use CTM................119
Remove and Install Engine................120
Group 10: Cooling System................116
Specifications................691
Engine Coolant................129
Cooling System Theory of Operation................467
Common Problems of Cooling Systems................131
Remove and Install Rotary Screen................132
Remove and Install Radiator................133
Radiator Assembly—Exploded View................135
Rotary Screen Assembly—Exploded View................136
Disassemble and Assemble Rotary Screen Drive................138
Screen Vacuum—Exploded View................140
Screen Vacuum Adjustment................142
Check and Adjust Radiator................143
Check Radiator Cap................144
Cooling System Operation................145
Section 30: Fuel and Air Intake Systems................146
Group 05: Fuel System................146
Do Not Modify the Fuel System................148
Specifications................691
Remove and Install Fuel Prefilter With Electric Fuel Pump................150
Remove Fuel Tank Frame................151
Remove and Install Fuel Tank................154
Fuel System—Exploded View................155
Fuel Filter—Exploded View................156
Check Injection Nozzles................157
Purge Fuel from Injection Nozzles................158
Group 10: Air Intake System................146
Specifications................691
Turbocharger Theory of Operation................467
Air Intake System—Exploded View................163
Air Intake and Filter Maintenance................164
Intake and Exhaust Components—Exploded View................168
Turbocharger Components................169
Remove and Install Turbocharger................171
Check Turbocharger................173
Check Radial Bearing Clearance of Turbocharger................178
Check Axial Clearance of Turbocharger................179
Pre-Lubricate Turbocharger................180
Section 40: Electrical System................181
Group 05: Battery................181
Essential or Recommended Tools................201
Multimeter—General Information................202
Servicing Batteries................187
Prevent Damage to Electrical Systems................189
Checking Battery Fluid Level................190
Checking Battery Charge................192
Charging Batteries................193
Preventing Battery Damage................195
Remove and Install Battery................197
Using a Booster Battery................199
Group 10: Fuses and Relays................181
Essential or Recommended Tools................201
Multimeter—General Information................202
Description of Fuses and Relays................203
Remove and Install Auxiliary Fuse................205
Remove and Install Starter Fuse................207
Remove and Install Backup Lights and Alarm Relay................209
Remove and Install Heater Relay................210
Group 15: Operators Station................181
Instruments and Controls Identification................213
Remove and Install Marker Light Switch................214
Remove and Install Work Light Switch................215
Remove and Install Throttle Switch................216
Remove and Install Murphy Gauge................218
Remove and Install Indicator Panel................220
Remove and Install Speedometer................222
Remove and Install Beacon Light and Unloading Auger Light Switch................224
Remove and Install Turn-Signal Switch................226
Remove and Install Key Switch................228
Remove and Install Reel Speed Switch................230
Remove and Install Field Light Switch................232
Remove and Install Fuel Gauge................234
Remove and Install Horn Switch................236
Remove and Install Horn................836
Remove and Install Threshing Speed Gauge................239
Remove and Install Wiper Switch................241
Remove and Install Radio................242
Remove and Install Radio Speaker................243
Remove and Install Dome Light................244
Group 20: Sensors and Switches................182
Specifications................691
Remove and Install Air Filter Restriction Switch................247
Remove and Install Backup Alarm Switch................248
Remove and Install Backup Alarm................250
Remove and Install Battery Disconnect Switch................251
Remove and Install Straw Walker Plug Switch................253
Remove and Install Brake Fluid Level Alarm Switch................254
Remove and Install Brake Light Switch................255
Remove and Install Chopper Plug Switch................256
Remove and Install Threshing Speed Sensor................257
Remove and Install Engine Crank Sensor................258
Remove and Install Fuel Level Sensor................259
Remove and Install Fuel Pressure Sensor................260
Remove and Install Fuel Temperature Sensor................261
Remove and Install Full Grain Tank Switch................262
Remove and Install Ground Speed Sensor................263
Remove and Install Hydraulic Oil Filter Pressure Alarm Switch................264
Remove and Install Manifold Air Temperature Sensor................265
Remove and Install Oil Pressure Sensor................266
Remove and Install Separator Safety Switch................267
Remove and Install Tine Separator Plugged Switch................268
Remove and Install Water-in-Fuel Sensor................269
Group 25: Alternator and Voltage Regulator................182
Remove and Install Alternator................272
Alternator Voltage Regulator................274
Group 30: Starter Motor and Starter Relay................183
Starter Motor................276
Remove and Install Starter Relay................277
Section 50: Ground Drive................279
Group 05: Variable Speed................279
Other Material................376
Specifications................691
Upper Variable Drive Sheave Troubleshooting................284
Checking Lower Unit................285
Upper Drive Sheave Alignment................286
Upper Variable Drive Sheave Damage Preventives................287
Disassemble and Assemble Power Take-Off Assembly................288
Disassemble and Assemble Upper Variable Sheave................290
Lower Transmission Drive Maintenance and Operation................297
Lower Transmission Drive Belt Adjustment................299
Disassemble and Assemble Lower Transmission Drive................301
Group 10: Clutch................279
Specifications................691
Disassemble and Assemble Clutch................316
Hydraulic Clutch Valve—Troubleshooting................320
Hydraulic Clutch Schematic................321
Remove and Install Hydraulic Clutch Valve................322
Hydraulic Clutch Valve—Exploded View................324
Remove and Install Hydraulic Clutch Cylinder................325
Disassemble and Assemble Hydraulic Clutch Cylinder................327
Adjust and Bleed Hydraulic Clutch Cylinder................329
Group 15: Transmission and Differential................279
Specifications................691
Gear Shift and Transmission Troubleshooting................333
Gear Shift Adjustment................335
Remove and Install Transmission................337
Disassemble and Assemble Transmission................340
Differential Troubleshooting................355
Disassemble and Assemble Differential................356
Group 20: Final Drive................279
Specifications................691
Remove and Install Final Drive................361
Disassemble and Assemble Final Drive................363
Final Drive Troubleshooting................373
Section 60: Brakes, Steering and Rear Axle................374
Group 05: Brakes................374
Other Material................376
Specifications................691
Remove and Install Brake Fluid Reservoir................378
Brake Fluid Reservoir—Exploded View................380
Bleed Brake System................381
Remove and Install Brake Master Cylinder................383
Master Cylinder—Exploded View................385
Disassemble and Assemble Park Brake................387
Adjust Park Brake................389
Remove and Install Service Brakes................391
Disassemble and Assemble Service Brakes................393
Adjust Service Brakes................395
Adjust Brake Pedal................397
Group 10: Steering................374
Remove and Install Steering Column................400
Remove and Install Steering Pump................401
Group 15: Rear Axle................374
Specifications................691
Rear Axle and Support—Exploded View................405
Rear Axle, Steering Bar, and Wheel Hub—Exploded View................407
Remove and Install Rear Axle................409
Adjust Wheel Bearings................413
Adjust Rear Wheel Toe-In................414
Section 70: Hydraulic System................416
Group 05: Hydraulic Reservoir................416
Hydraulic Reservoir Assembly—Exploded View................419
Remove and Install Hydraulic Reservoir................421
Theory of Operation - Hydrostatic Reservoir................424
Remove and Install Hydrostatic Reservoir................425
Group 10: Hydraulic Pumps................416
Theory of Operation................467
Hydraulic Pump Drive................430
Remove and Install Hydraulic Pump................431
Hydrostatic Pump Drive................434
Remove and Install Hydrostatic Pump................435
Group 15: Hydraulic Valves................416
Theory of Operation................467
Remove and Install Hydraulic Control Valve................440
Group 20: Hydraulic Cylinders................416
Specifications................691
Remove and Install Steering Cylinder................450
Remove and Install Unloading Auger Swing Cylinder................453
Remove and Install Header Lift Cylinders................455
Remove and Install Reel Lift Cylinders................458
Remove and Install Tension Cylinder - Hydrostatic System................460
Group 25: Accumulator................416
Remove and Install Accumulator................464
Group 70: Hydrostatic Motor................416
Theory of Operation................467
Remove and Install Hydrostatic Motor................468
Section 80: Miscellaneous................471
Group 05: Shafts and Bearings................471
Specifications................691
Remove and Install Rotary Shaft Bearings................474
Remove and Install Sleeve Bearings................478
Combine Shaft Rotation................481
Section 90: Operator Station Repair................483
Group 05: System Components................483
Cab Components................485
Windshield Wiper—Exploded View................486
Remove and Install Windshield Wiper................487
Remove and Install Windshield Wiper Motor................488
Left-Hand Shift Levers—Exploded View................490
Variable Drive Levers—Exploded View................492
Gear Shifting Parts—Exploded View................494
Unloading Auger Lever—Exploded View................496
Group 10: Cab................483
Cab Frame and Window—Exploded View................499
Open Cab Awning................501
Remove and Install Cab................502
Remove and Install Operator Seat................506
Remove and Install Fan................508
Section 110: Feeder House................509
Group 05: Feeder House—Removing and Installing................509
Specifications................691
Feeder House Operation Diagram................512
Disengage and Engage Feeder House Cylinder Safety Stop................513
Feeder House Drive—Exploded View................514
Remove and Install Feeder House Drive................516
Remove and Install Feeder House................518
Remove and Install Feeder House Conveyor Chain................521
Replace Conveyor Chain Slat................523
Feeder House Upper Shaft Assembly—Exploded View................524
Feeder House Drive Pulley and Slip Clutch—Exploded View................525
Remove and Install Feeder House Upper Shaft Assembly................527
Feeder House Lower Shaft and Drum—Exploded View................530
Remove and Install Feeder House Lower Shaft and Drum................532
Disassemble and Assemble Feeder House Drum................535
Feeder House Dust Shield and Floor Panel—Exploded View................537
Group 10: Feeder House—Adjustments................509
Specifications................691
Feeder House Conveyer Chain and Drum Adjustments................541
Section 120: Threshing Separation and Grain Cleaning................543
Group 05: Cylinder and Concave................543
Specifications................691
Remove and Install Stone Trap Door................547
Remove and Install Cylinder................549
Remove and Install Rasp Bars................556
Disassemble and Assemble Rasp Bar Cylinder................557
Concave—Exploded View................559
Remove and Install Concave................561
Adjust Concave................563
Group 10: Separator Drive................543
Specifications................691
Adjust Separator Drive Belt Tension Pulley................568
Adjust Separator Drive Belt and Pulleys................570
Adjust Separator Drive Pulley Belt Guides................573
Disassemble and Assemble Cylinder Variable Sheave................575
Remove and Install Cylinder Variable Sheave................583
Cylinder Variable Speed Reducer—Exploded View................587
Remove and Install Cylinder Variable Speed Reducer................589
Disassemble and Assemble Cylinder Variable Speed Reducer................592
Variable Drive Sheave—Exploded View................597
Remove and Install Cylinder Variable Drive Sheave................599
Group 15: Beater................543
Specifications................691
Beater Curtain—Exploded View................608
Remove and Install Beater Curtain................610
Remove and Install Beater................612
Group 20: Cleaning................543
Specifications................691
Chaffer Bracket and Hanger Components—Exploded View................618
Remove and Install Chaffer................620
Remove and Install Chaffer Frame................621
Remove and Install Sieve................624
Remove and Install Sieve Frame................625
Remove and Install Tailings and Clean Grain Auger Trough Housing................627
Cleaning Fan—Exploded View................631
Upper and Lower Variable Fan Drive—Exploded View................634
Remove and Install Cleaning Fan................637
Remove and Install Variator Fan Speed Drive Belt................640
Adjust Cleaning Fan................642
Disassemble and Assemble Drive Eccentrics................644
Shoe Crank and Pitman—Exploded View................645
Location of Rubber Isolators................647
Remove and Install Rubber Isolators................649
Dimensions of Rubber Isolators................652
Group 25: Straw Walkers and Walker Tine Separator................544
Specifications................691
Remove and Install Straw Walkers................659
Remove and Install Straw Walkers Crankshaft................661
Straw Walkers and Crankshafts—Exploded View................664
Disassemble and Assemble Straw Walker Drive Slip Clutch................666
Adjust Straw Walker Drive Chain Tension................668
Walker Tine Separator—Exploded View................669
Remove and Install Walker Tine Separator................671
Disassemble and Assemble Walker Tine Separator................675
Group 30: Residue Disposal................544
Specifications................691
Remove and Install Straw Chopper................678
Remove and Install Straw Chopper Rotor................682
Install Adapter Sleeve Bearing of Chopper Rotor................684
Remove and Install Rotor Knives................688
Section 130: Elevator, Grain Tank, and Unloading................689
Group 05: Elevators and Augers................689
Specifications................691
Elevator and Auger Drive Diagram................692
Remove and Install Clean Grain Elevator Slip Clutch and Bearing................693
Remove and Install Lower Tailings Elevator Paddle Chain Bearing................695
Remove and Install Upper Clean Grain Elevator Paddle Chain Outer Bearing................697
Grain Tank Distribution Auger—Exploded View................698
Remove and Install Grain Tank Distribution Auger................700
Remove and Install Upper Clean Grain Elevator Housing................702
Remove and Install Clean Grain Elevator................703
Upper Clean Grain Elevator Paddle Chain Adjustment................707
Remove and Install Tailings Elevator................709
Remove and Install Clean Grain and Tailings Augers................712
Remove and Install Clean Grain and Tailings Elevator Bearings—Left-Hand Side................715
Upper Tailings Auger—Exploded View................717
Remove and Install Upper Tailings Auger and Bearings................718
Upper Tailings Auger Chain Adjustment................721
Unloading Auger Drive—Left-Hand Side................722
Disassemble and Assemble Unloading Auger Drive and Cross Auger—Right-Hand Side................724
Remove and Install Unloading Auger Tube................727
Remove and Install Unloading Auger................730
Section 240: Electrical Diagnostic................733
Group 10: General References................733
Using Electrical Section................737
Visually Inspect Electrical System................738
Electrical Schematic Symbols................739
Electrical Designators................742
Using a Probe Light................743
Electrical Circuit................745
Electronic Circuit................746
Circuit Malfunctions................748
Circuit Malfunctions—Continued................749
Locations of Circuit Malfunctions................752
Troubleshooting High Resistance or Open Circuits................753
Troubleshooting a Grounded Circuit................754
Troubleshooting Shorted Circuits................756
Repairing Shorted Circuits................759
Understanding Electrical vs. Electronic Circuit Voltage Test Readings................760
Intermittent Electronic Problems................762
Seven Step Electrical Test Procedure With probe light or multimeter................733
Seven Step Electrical Test Procedure—Continued................768
Battery Operation................769
Procedure for Testing Batteries................770
Diagnose Battery Malfunctions................771
Group 20: Theory of Operation................467
Unloading Lamp and Alarm Lamp................773
Reel Speed Control Motor................831
Brake Lights................828
Work Lights and Side Work Lights................833
Backup Horn and Backup Lights................834
Horn................836
Headlights................837
Turn Signal Lights................838
Hazard Blinker Lights................839
Marker Lights and Grain Tank Light................841
Transfer Pump................842
Fuel Level Display................843
Grain Tank Full Display................785
Hydraulic Oil Filter Pressure Alarm Display................846
Brake Oil Level Alarm Display................844
Parking Brake Alarm Display................847
Ground Speed Display................849
Cylinder Speed Display................848
Straw Hood Plugged Alarm Display................850
Starting System................792
Alternator and Battery................793
Group 30: Schematics................734
Starting and Charging................796
Engine Electronics................798
Instruments Alarm................800
Reel Speed Control................802
Unloading Lights................804
Horn................836
Turn Signal Lights................838
Width and Grain Tank Lights................810
Work Lights................832
Headlights................837
Brake Light................816
Backup Horn and Lights................818
Fuel Level Display................843
Ground Speed Display................849
Cylinder Speed Display................848
Group 50: Diagnostics................734
Tools Information................827
Brake Lights................828
Unloading Light................829
Unloading Alarm Light................830
Reel Speed Control Motor................831
Work Lights................832
Side Work Lights................833
Backup Lights................834
Backup Horn................836
Horn................836
Headlights................837
Turn Signal Lights................838
Hazard Blinker Lights................839
Marker Lights................840
Grain Tank Light................841
Transfer Pump................842
Fuel Level Display................843
Brake Oil Level Alarm Display................844
Grain Tank Full Alarm Display................845
Hydraulic Oil Filter Pressure Alarm Display................846
Parking Brake Alarm Display................847
Cylinder Speed Display................848
Ground Speed Display................849
Straw Hood Plugged Alarm Display................850
Section 249: Electrical Components - Connectors................851
Group 40: Electrical Components................851
X100 - Engine Harness-to-ECU(J01)................858
X101 - Engine Harness-to-Exchange Harness................861
X102 - Engine Harness-to-Transfer Pump................863
X103 - Engine Harness-to-Alternator................865
X104 - Engine Harness-to-ECU(J02)................867
X105 - Engine Harness-to-CAN Terminator................869
X107 - Engine Harness-to-Main Fuse Panel................871
X108 - Engine Harness-to-Starter Relay................873
X109 - Engine Harness-to-Heater Relay................875
X110- Engine Harness-to-Heater Relay................877
X111 - Engine Harness-to-Fuse................879
X112 - Engine Harness-to-Fuse................881
X113 - Engine Harness-to-Ground................883
X114 - Engine Harness-to-Battery................885
X115 - Engine Harness-to-Air Heater Connector................887
X116 - Engine Harness-to-Heater................889
X117 - Engine Harness-to-Air Filter Restriction Switch................891
X118 - Engine Harness-to-Exchange Harness................893
X119 - Engine Harness-to-Exchange Harness................895
X120 - Engine Harness-to-Air Filter Restriction Switch................897
X122 - Engine Harness-to-MAT Sensor................899
X123 - Engine Harness-to-WIF Sensor................901
X124 - Engine Harness-to- Fuel Temperature Sensor................903
X125 - Engine Harness-to-Injection Pressure Sensor................905
X126 - Engine Harness-to-Exchange Harness................907
X127 - Engine Harness-to-Exchange Harness................909
X128 - Exchange Harness-to-Panel Harness................911
X129 - Exchange Harness-to-Panel Harness................913
X130 - Exchange Harness-to-Panel Harness................915
X131 - Panel Harness-to-Murphy Gauge................917
X132 - Panel Harness-to-Idle Switch................919
X133 - Panel Harness-to-Key Switch................921
X135 - Panel Harness-to-Fuse Center I................923
X136 - Panel Harness-to-Fuse Center I................925
X137 - Instrument Harness-to-Fuse Center I................927
X138 - Instrument Harness-to-Fuse Center I................929
X139 - Instrument Harness-to-Fuse Center I................931
X140 - Instrument Harness-to-Width Light Switch................933
X141 - Instrument Harness-to-Headlight Switch................935
X143 - Instrument Harness-to-Worklamp Switch................937
X144 - Instrument Harness-to-Worklamp Switch................939
X145 - Instrument Harness-to-Worklamp Switch................941
X146 - Instrument Harness-to-Fuel Gauge................943
X148 - Instrument Harness-to-Ground Speedometer................945
X149 - Instrument Harness-to-Unloading Light Switch................947
X150 - Instrument Harness-to-Unloading Light Switch................949
X151 - Instrument Harness-to-Unloading Light Switch................951
X152 - Instrument Harness-to-Backup Light and Alarm Switch................953
X153 - Instrument Harness-to-Backup Relay................955
X156 - Instrument Harness-to-Cab Harness................957
X157 - INstrument Harness-to-Turn Signal Switch................960
X161 - Instrument Harness-to-Reel Speed Control Switch................961
X162 - Instrument Harness-to-Reel Speed Control Switch................963
X163 - Instrument Harness-to-Reel Speed Control Switch................965
X164 - Instrument Harness-to-Reel Speed Control Switch................967
X165 - Instrument Harness-to-Reel Speed Control Switch................969
X166 - Instrument Harness-to-Cylinder Tachometer................971
X167 - Instrument Harness-to-Horn Switch................973
X168 - Instrument Harness-to-Horn Switch................975
X169 - Cab Platform Harness-to-Grain Tank Light................977
X170 - Cab Platform Harness-to-Grain Tank Full Alarm Switch................979
X171 - Cab Platform Harness-to-Unloading Light................981
X172 - Cab Platform Harness-to-Unloading Alarm Light................983
X173 - Cab Platform Harness-to-Cylinder Speed Sensor................985
X174 - Cab Platform Harness-to-Ground Speed Sensor................987
X177 - Cab Platform Harness-to-Left Headlight................989
X180 - Cab Platform Harness-to-Reel Speed Control Switch................991
X188 - Cab Platform Harness-to-Brake Oil Level Alarm Switch................993
X189 - Grain Tank Harness-to-Connection Harness................995
X190 - Grain Tank Wiring Harness-to-Backup Horn................997
X191 - Straw Walker Plugged Alarm Switch I Cable-to-Straw Walker Plugged Alarm Switch II Cable................999
X192 - Grain Tank Wiring Harness-to-Hydraulic Oil Filter Pressure Alarm Switch................1001
X193 - Connection Wiring Harness-to-Fuel Level Sensor................1003
X194 - Connection Wiring Harness-to-Tailing Light Wiring Harness L.H.................1005
X195 - Connection Wiring Harness-to-Tailing Light Wiring Harness R.H.................1007
X196 - Connection Wiring Harness-to-Tailing Light Wiring Harness................1009
X197 - Straw Walker Plugged Alarm Switch II Cable-to-Straw Walker Plugged Alarm Switch II................1011
X198 - Tailing Light Wiring Harness L.H.-to-Tailing Light L.H.................1013
X199 - Tailing Light Wiring Harness R.H.-to-Tailing Light R.H.................1015
X208 - Battery(Positive)-to-Battery Cable................1017
X209 - Battery Cable-to-Starter................1019
X210 - Alternator Wiring Harness-to-Starter................1021
X211 - Alternator Wiring Harness-to-Alternator................1023
X212 - Starter-to-Engine Power Wiring Harness................1025
X213 - Starter-to-Main Fuse Panel................1027
X214 - Engine Power Wiring Harness-to-Starter................1029
X215 - Engine Power Harness-to-Starter Relay................1031
X218 - Main Power Switch-to-Main Power Switch Bonding Cable................1033
X219 - Main Power Switch Bonding Cable-to-Ground................1035
X220 - Starter Relay-to-Ground Cable................1037
X221 - Ground Cable-to-Ground................1039
X222 - Heater Relay-to-Ground Cable................1041
X223 - Ground Cable-to-Ground................1043
X232 - Heater and Starter Fuse-to-Starter Relay Power Cable................1045
X233 - Starter Relay Power Cable-to-Heater Relay................1047
X235 - Battery Ground Cable-to-Battery(Negative)................1049
X238 - Straw Walker Plugged Alarm Switch I Cable-to-Straw Walker Plugged Alarm Switch I................1051
X239 - Straw Walker Plugged Alarm Switch I-to-Straw Walker Plugged Alarm Switch I Cable................1053
X240 - Straw Walker Plugged Alarm Switch II-to-Straw Walker Plugged Alarm Switch III Cable................1055
X241 - Straw Walker Plugged Alarm Switch III Cable-to-Straw Walker Plugged Alarm Switch III................1057
X242 - Straw Walker Plugged Alarm Switch III-to-Straw Walker Plugged Alarm Switch IV Cable................1059
X243 - Straw Walker Plugged Alarm Switch IV Cable-to-Straw Walker Plugged Alarm Switch IV................1061
X244 - Unloading Alarm Light-to-Ground................1063
X245 - Tailing Light L.H.-to-Ground................1065
X246 - Tailing Light R.H.-to-Ground................1067
X250 - Instrument Harness-to-Fuse Center I................1069
X253 - Engine Harness-to-Fuel Pressure Sensor................1071
X254 - Engine Harness-to-Oil Pressure Sensor................1073
X256 - Engine Harness-to- Crank Sensor................1075
Section 270: Hydraulic Diagnostics................1077
Group 15: Hydraulic System Specification................1080
Hydraulic System Specification................1080
Group 20: Theory of Operation................467
Main Hydraulic System-Theory of Operation................1084
Header Lift and Lower System-Theory of Operation................1086
Reel Lift and Lower System-Theory of Operation................1087
Threshing Cylinder Speed Adjust System-Theory of Operation................1088
Ground Speed Adjust System-Theory of Operation................1089
Unloading Auger Swing System-Theory of Operation................1090
Steering System-Theory of Operation................1091
Hydrostatic Drive System................1092
Group 30: Schematics................1077
Main Hydraulic System-Schematic................1096
Operating Hydraulic System-Schematic................1097
Steering Hydraulic System-Schematic................1099
Hydrostatic System Schematic................1100
Group 50: Diagnostics................1077
Hydraulic System-Troubleshooting................1104
Hydraulic Pump-Troubleshooting................1106
Reel and Header Lift and Lower Cylinders—Troubleshooting................1108
Threshing Cylinder Speed and Ground Speed Adjust Cylinders- Troubleshooting................1111
Steering Cylinder- Troubleshooting................1113
Unloading Auger Swing Cylinder- Troubleshooting................1114
Optional Hydrostatic System Components - Troubleshooting................1115
Section 279: Hydraulic Components................1119
Group 05: Using Instruction................1119
Using the Hydraulic Components Information................1122
Group 20: Symbol Reference................1119
Component Identification................1125
Group 40A: Hydraulic＊A Component................1119
A1＊Accumulator................1128
Group 40C: Hydraulic＊C Components................1119
C1＊Reel Lift and Lower Cylinder - Left Hand................1130
C2＊Reel Lift and Lower Cylinder - Right Hand................1131
C3＊Header Lift and Lower Cylinder................1132
C4＊Ground Speed Adjust Cylinder................1133
C5＊Steering Cylinder................1134
C6＊Threshing Cylinder Speed Adjust Cylinder................1135
C7＊Unloading Auger Swing Cylinder................1136
C8＊Brake Cylinder................1137
C9＊Clutch Cylinder................1138
C10＊Hydrostatic Pump Tension Cylinder................1139
Group 40F: Hydraulic＊F Component................1119
F1＊Oil Return Filter................1141
Group 40G: Hydraulic＊G Components................1119
G1＊Hydraulic Control Valve................1143
G2＊Steering Metering Valve................1144
G3＊Main Brake Cylinder................1145
G4＊Main Clutch Cylinder................1146
Group 40M: Hydraulic＊M Component................1119
M1＊Hydrostatic Motor................1148
Group 40O: Hydraulic＊O Components................1119
O1＊Orifice＊Reel lift and lower speed................1150
O2＊Orifice＊Header raise and lower speed................1151
O3＊Orifice＊Ground speed................1152
O4＊Orifice＊Cylinder speed................1153
O5＊Orifice＊Unloading auger swing speed................1154
O6＊Orifice＊Unloading auger swing speed................1155
Group 40P: Hydraulic＊P Components................1120
P1＊Hydraulic Pump................1157
P2＊Hydrostatic Pump................1158
Group 40R: Hydraulic＊R Components................1120
R1＊Hydraulic Reservoir................1160
R2＊Hydrostatic reservoir................1161
Group 40V: Hydraulic＊V Components................1120
V1＊Relief valve＊Control valve................1163
Group 40X: Hydraulic＊X Components................1120
X1＊Hydraulic connection＊Ground speed adjust cylinder................1165
X2＊Hydraulic connection＊Reel lift and lower cylinder coupler................1166
X3＊Hydraulic connection＊Threshing auger speed adjust cylinder................1167
John Deere Combines W230 (4LZ-7, 4LZ-8) Diagnosis and Repair Service Manual (TM702819)
