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John Deere 5620 5720 5820 Tractor Diagnostic Tests Service Manual TM4791
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The complete John Deere TM4791 Diagnosis and Tests Service Manual for 5620, 5720 and 5820 tractors, covering engine, fuel and air intake, cooling, electrical systems, electronic control units, PowrQuad and PowrQuad Plus transmissions, drive systems, steering and brakes, hydraulics, operator’s cab and special tools. Instant PDF download.
SKU: JD-TM4791-HD-5620-5820
Category: Service Manuals
Tags: John Deere 5620 5720 5820 diagnostic manual, John Deere tractor electrical schematics, PowrQuad Plus transmission diagnostics, TM4791 service manual PDF
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Description
John Deere 5620 5720 5820 Tractor Diagnostic Tests Service Manual TM4791
This is the full John Deere TM4791 Diagnosis and Tests Service Manual covering the 5620, 5720 and 5820 tractors. It is the technical reference Deere technicians use to run diagnostic procedures, perform operational checks, read system specifications, and carry out the adjustments needed to keep these tractors working correctly.
The manual is organized by system rather than by repair sequence. Each section opens with operational checks, then walks through diagnostic tests and adjustment procedures, and finishes with a theory of operation chapter that explains how the circuit or assembly is meant to behave. That structure is what makes this John Deere 5620 5720 5820 Tractor Diagnostic Tests Service Manual TM4791 useful both in the shop and at the bench: you can test a suspect circuit, interpret the result, and then read the operating theory to confirm whether the reading actually points to a fault.
File Details
- Manual type: Diagnosis and Tests Service Manual
- Brand: John Deere
- Models covered: 5620, 5720, 5820 tractors
- Document number: TM4791
- Publication date: 01 May 2007
- Language: English
- Format: PDF
- Page count: 1,572 pages
Chapters Covered
- Section 210 — General Information
- Group 05 — Safety Measures
- Group 15 — General References
- Section 220 — Engine
- Group 10 — Operational Checks
- Group 15 — Tests and Adjustments
- Section 230 — Fuel, Air Intake and Cooling Systems
- Group 15 — Tests and Adjustments
- Group 20 — Theory of Operation
- Section 240 — Electrical System
- Group 10 — Electrical Circuit Checks
- Group 15 — Component Testing
- Group 25 — Functional Schematics
- Group 26 — Summary of Wiring Harnesses
- Group 26A — Wiring Harnesses
- Group 26B — Wiring Harnesses from Serial Number 424816
- Section 245 — Electronic Control Units
- Group 05 — Operation and General Information on Diagnostics
- Group 20 — Data BUS Systems, Theory of Operation
- BCU — Basic Control Unit
- BIF — Basic Informator
- EPC — Control Unit for PowrQuad Plus Transmission
- PRF — Performance Monitor
Complete PDF Bookmark TreeComplete Bookmarks
The complete bookmarks in the “John Deere 5620 5720 5820 Tractor Diagnostic Tests Service Manual TM4791” are as follows:
Table of contentsp. 2FOREWORDp. 5VERSION DATEp. 6+Section 210 – GENERAL INFORMATIONp. 8
+Group 05 – Safety Measuresp. 8
Recognize Safety Informationp. 8”Important” Informationp. 8”Note” Informationp. 8Prevent Machine Runawayp. 8Handle Fluids Safely—Avoid Firesp. 9Prevent Battery Explosionsp. 9Prepare for Emergenciesp. 9Prevent Acid Burnsp. 11Avoid High-Pressure Fluidsp. 11Service Cooling System Safelyp. 12Remove Paint Before Welding or Heatingp. 12Avoid Heating Near Pressurized Fluid Linesp. 14Work In Ventilated Areap. 14Wear Protective Clothingp. 15Practice Safe Maintenancep. 16Park Machine Safelyp. 16Use Proper Lifting Equipmentp. 17Construct Dealer-Made Tools Safelyp. 17Support Machine Properlyp. 18Work in Clean Areap. 18Illuminate Work Area Safelyp. 19Service Machines Safelyp. 19Use Proper Toolsp. 20Service Tires Safelyp. 21Service Front-Wheel Drive Tractor Safelyp. 21Safety Information – Air Brake Systemp. 23Avoid Eye Contact With Radarp. 23Keep ROPS Installed Properlyp. 24Replace Safety Signsp. 24Dispose of Waste Properlyp. 24Live With Safetyp. 25Safety Measures on Electronic Control Unitsp. 25+Group 15 – General Referencesp. 27
Reference 210-15-001, General References—Summaryp. 27Reference 210-15-010, Unified Inch Bolt and Cap Screw Torque Valuesp. 28Reference 210-15-015, Metric Bolt and Cap Screw Torque Valuesp. 29210-15-020, Hydraulic System Inch Fitting Torquesp. 30210-15-025, Hydraulic System Metric Fitting Torquesp. 31210-15-030, Component Identification Tablep. 32Reference 210-15-035, How to Read a Functional Schematicp. 33210-15-040, How to Read a Diagnostic Schematicp. 34210-15-042, Wire Numbers and Color Codesp. 35210-15-045, Schematic, Wiring and Harness Symbolsp. 36Reference 210-15-046, Troubleshooting Unsolved Problemsp. 38210-15-050, Visual Check of the Electrical Systemp. 38+Types of faultp. 40
High resistance or open circuitp. 40Grounded circuitp. 41Shorted circuitp. 42High resistance or open circuitp. 43Grounded circuitp. 43Shorted circuitp. 43Reference 210-15-060, Seven Step Electrical Test Procedurep. 44210-15-065, Hydraulic System — Circuit Symbolsp. 45+Section 220 – ENGINEp. 51
+Group 10 – Operational Checksp. 51
Reference 220-10-010, Safetyp. 51Reference 220-10-020, Preliminary Engine Testsp. 51+Group 15 – Tests And Adjustmentsp. 52
Reference 220-15-001, Tests and Adjustments—Summary of Referencesp. 52220-15-010, Dynamometer Testp. 52Reference 220-15-020, Measuring PTO Power Outputp. 53+Section 230 – FUEL, AIR INTAKE AND COOLING SYSTEMSp. 58
+Group 15 – Tests And Adjustmentsp. 58
Reference 230-15-001, Tests and Adjustments—Summary of Referencesp. 58Reference 230-15-010, General Informationp. 58Reference 230-15-020, Explanation of Checksp. 58Reference 230-15-030, Safetyp. 58Reference 230-15-040, Special Toolsp. 59Reference 230-15-050, Specificationsp. 61Reference 230-15-060, Testing Air Intake Systemp. 62Reference 230-15-061, Testing the Low-Pressure Switch in Air Intake Systemp. 63Reference 230-15-070, Checking the Cooling System for Leaksp. 64Reference 230-15-080, Testing the Temperature at which the Thermostat opensp. 66Reference 230-15-090, Checking the Viscous Clutch of the Fanp. 67Reference 230-15-100, Checking the Fuel Transfer Pumpp. 68Reference 230-15-110, Hand Throttle Lever and Accelerator Pedal Adjustmentp. 69+Group 20 – Theory Of Operationp. 70
Reference 230-20-001, Component Description – Summary of Referencesp. 70Reference 230-20-010, Fuel System – Descriptionp. 71Reference 230-20-020, Air Intake System – Theory of Operationp. 73Reference 230-20-030, Coolant Circuit – Descriptionp. 74Reference 230-20-040, Cooling System Radiator – Descriptionp. 75Reference 230-20-070, Viscous Clutch of Fan – Theory of Operationp. 76Reference 230-20-080, Automatic Drive Belt Tensioner – Theory of Operationp. 77Reference 230-20-090, Cold Weather Starting Aids – Theory of Operationp. 77+Section 240 – ELECTRICAL SYSTEMp. 85
+Group 10 – Electrical Circuit Checksp. 85
Reference 240-10-001, Checking Electrical Circuits — Summary of Referencesp. 85Reference 240-10-002, Special Toolsp. 85Reference 240-10-003, SE1 – Starting Motor and Charging Circuitp. 87Reference 240-10-004, SE2 – Basic Informator/Instrument Unitp. 105Reference 240-10-005, SE3 – Hornp. 122Reference 240-10-006, SE4 – Cigarette Lighter and Operator′s Seatp. 126Reference 240-10-007, SE6 – Lightsp. 130Reference 240-10-008, SE7 – Worklightsp. 144Reference 240-10-009, SE8 – Front Loader Plugp. 148Reference 240-10-010, SE9 – Radio, Dome Light and Console Lightp. 150Reference 240-10-011, SE10 – Fan and Air Conditionerp. 154Reference 240-10-012, SE11 – Windshield Wiper and Washerp. 158Reference 240-10-013, SE12 – Rear Window Wiper and Washerp. 164Reference 240-10-014, SE13 – Beacon Lightp. 168Reference 240-10-015, SE14 – 3- and 7-Terminal Power Outlet Socketsp. 171Reference 240-10-016, SE15 – Electronic Hitch Controlp. 175Reference 240-10-017, SE16A – Basic Control Unit (BCU) (Rear PTO and External Control)p. 180Reference 240-10-018, SE16B – Basic Control Unit (BCU) (Front PTO)p. 184Reference 240-10-019, SE16C – Basic Control Unit (BCU) (Front-Wheel Drive)p. 187Reference 240-10-020, SE16D – Basic Control Unit (BCU) (Differential Lock)p. 191Reference 240-10-021, SE16E – Basic Control Unit (BCU) (Hazard Warning and Turn Signal Lights)p. 194Reference 240-10-022, SE16F – Basic Control Unit (BCU) (Speed Sending Units and Radar)p. 198Reference 240-10-023, SE16G – Basic Control Unit (BCU) (Headland Management System II)p. 202Reference 240-10-024, SE16H – Basic Control Unit (BCU) (Power Supply, Acoustic Alarm)p. 206Reference 240-10-026, SE16J – Basic Control Unit (BCU) (Brake System and Handbrake Monitor Unit)p. 209Reference 240-10-027, SE17 – Signal Socket and Service Plugp. 213Reference 240-10-028, SE18 – Performance Monitorp. 215Reference 240-10-033, SE22 – BUS Terminating Resistorp. 218Reference 240-10-035, SE26 – Transmission Control Unit (PowrQuad Plus Transmission)p. 221+Group 15 – Component Testingp. 254
+Component Testsp. 254
Voltage Check at Starting Motorp. 254Operational Check of Starting Motorp. 254Continuity Check of Solenoid Switch and Field Windingp. 255Causes for Low Starting Motor Cranking Speedp. 255Causes for Starting Motor not Operating At Allp. 255Check Alternator Output Voltagep. 256Alternator Overchargingp. 256Battery-Alternator Circuit Checkp. 257Exciter Circuit Check:p. 257Alternator Output Voltage Check:p. 258Check for Electrical Leakagep. 258Check for Electrical Leakage from Systemp. 259Causes for Low Alternator Output:p. 260Alternator Check Resultsp. 260Battery (G01) Inspectionp. 260Check Electrolyte Level of All Cellsp. 261Check Specific Gravity of Each Cellp. 261Check Battery Voltagep. 262Charge Batteryp. 262Select Charging Ratep. 263Charge Battery — Continuedp. 264Check Battery Conditionp. 264Neutral start switch (B36)p. 265Diode for Electrical Starting Aid (D31)p. 265Relay for Starting Motor and Electrical Starting Aid (K01, K36)p. 266"ELX" Electronics Power Supply and "ACC" (Accessory) Relays (K01/1, K01/2, K01/3)p. 266Diode for Power Supply to Electronics (K07/1)p. 266Fuel Preheater Relay (K07/3)p. 267Injection Pump Shut-Off Valve (K24)p. 267Relay for Battery Cut-Off Switch (K48)p. 267Fuel Preheater Element (R02)p. 268Heating Element for Electrical Starting Aid (R15)p. 268Main (Key) Switch (S01)p. 269Battery Cut-Off Switch, Version 1 (S117)p. 269Battery Cut-Off Switch, Version 2 (S125)p. 270Voltage Check at Starting Motorp. 270Operational Check of Starting Motorp. 270Continuity Check of Solenoid Switch and Field Windingp. 270Causes for Low Starting Motor Cranking Speedp. 270Causes for Starting Motor not Operating At Allp. 270Check Alternator Output Voltagep. 270Alternator Overchargingp. 270Battery-Alternator Circuit Checkp. 270Exciter Circuit Check:p. 270Alternator Output Voltage Check:p. 270Check for Electrical Leakagep. 270Check for Electrical Leakage from Systemp. 270Causes for Low Alternator Output:p. 270Alternator Check Resultsp. 270Battery (G01) Inspectionp. 270Check Electrolyte Level of All Cellsp. 270Check Specific Gravity of Each Cellp. 270Check Battery Voltagep. 270Charge Batteryp. 270Select Charging Ratep. 270Charge Battery — Continuedp. 270Check Battery Conditionp. 270Neutral start switch (B36)p. 270Diode for Electrical Starting Aid (D31)p. 270Relay for Starting Motor and Electrical Starting Aid (K01, K36)p. 270"ELX" Electronics Power Supply and "ACC" (Accessory) Relays (K01/1, K01/2, K01/3)p. 270Diode for Power Supply to Electronics (K07/1)p. 270Fuel Preheater Relay (K07/3)p. 270Injection Pump Shut-Off Valve (K24)p. 270Relay for Battery Cut-Off Switch (K48)p. 270Fuel Preheater Element (R02)p. 270Heating Element for Electrical Starting Aid (R15)p. 270Main (Key) Switch (S01)p. 270Battery Cut-Off Switch, Version 1 (S117)p. 270Battery Cut-Off Switch, Version 2 (S125)p. 270+Component testsp. 271
Air Cleaner Restriction Warning Switch (B02)p. 271Fuel Gauge Sending Unit (B03)p. 271Engine oil pressure sending unit (B04)p. 271Sending unit for transmission oil filter restriction warning light (B07)p. 272Coolant Temperature Sender (B08)p. 272Low-Temperature Switch (B29)p. 273High-Temperature Switch (B30)p. 273Transmission Oil Pressure Sender (B31)p. 273Transmission Oil Temperature Sending Unit (B60)p. 274Sending Unit for the Hydraulic Oil Filter Warning Light (B111)p. 274Roll-Mode Switch (S32)p. 275Air Cleaner Restriction Warning Switch (B02)p. 275Fuel Gauge Sending Unit (B03)p. 275Engine oil pressure sending unit (B04)p. 275Sending unit for transmission oil filter restriction warning light (B07)p. 275Coolant Temperature Sender (B08)p. 275Low-Temperature Switch (B29)p. 275High-Temperature Switch (B30)p. 275Transmission Oil Pressure Sender (B31)p. 275Transmission Oil Temperature Sending Unit (B60)p. 275Sending Unit for the Hydraulic Oil Filter Warning Light (B111)p. 275Roll-Mode Switch (S32)p. 275+Component checksp. 276
Horn (H01)p. 276Horn switch (S04)p. 276Horn (H01)p. 277Horn switch (S04)p. 277+Component checksp. 278
Seat with compressor and heater (A29)p. 278Cigarette lighter (E05)p. 278Seat with compressor and heater (A29)p. 279Cigarette lighter (E05)p. 279+Component Testsp. 280
Relays for Full-Beam Headlights, Dipped-Beam Headlights and Worklights (K02/1, K02/2, K02/6, K02/7)p. 280Diode for Dipped- and Full-Beam Headlights (K07/1)p. 280Light Switch (S09)p. 281Full-/Dipped-Beam Switch (S10)p. 281Switch for Lights on Cab Frame (S11)p. 281Flash-to-Pass Switch (S30)p. 282Relays for Full-Beam Headlights, Dipped-Beam Headlights and Worklights (K02/1, K02/2, K02/6, K02/7)p. 282Diode for Dipped- and Full-Beam Headlights (K07/1)p. 282Light Switch (S09)p. 282Full-/Dipped-Beam Switch (S10)p. 282Switch for Lights on Cab Frame (S11)p. 282Flash-to-Pass Switch (S30)p. 282+Component Testsp. 283
Relays for Worklights (K02/3, K02/4 and K02/5)p. 283Switch for Front Corner Worklights (S59)p. 283Switches for Worklights at Front and Rear of Cab Roof (S92/1 and S92/2)p. 284Relays for Worklights (K02/3, K02/4 and K02/5)p. 285Switch for Front Corner Worklights (S59)p. 285Switches for Worklights at Front and Rear of Cab Roof (S92/1 and S92/2)p. 285+Component Testsp. 286
Door Switch for Dome Light (B28-LH)p. 286Dome Light Switch (S35)p. 286Door Switch for Dome Light (B28-LH)p. 287Dome Light Switch (S35)p. 287+Component Testsp. 288
Thermostat Switch (B14)p. 288Pressure Switch (B15)p. 288Fan and Air Conditioner Relay (K08/1 and K08/2)p. 289Fan Motors (M07, M10)p. 290Compressor Clutch (M02)p. 291Resistor for Fan Motors (R18)p. 292Fan Switch (S14)p. 293Air-Conditioner Switch (S28)p. 293Thermostat Switch (B14)p. 294Pressure Switch (B15)p. 294Fan and Air Conditioner Relay (K08/1 and K08/2)p. 294Fan Motors (M07, M10)p. 294Compressor Clutch (M02)p. 294Resistor for Fan Motors (R18)p. 294Fan Switch (S14)p. 294Air-Conditioner Switch (S28)p. 294+Component Testsp. 295
Wiper Motors for Windshield and Rear Window (M03 and M04)p. 295Pumps for Windshield and Rear Window Washers (M05 and M06)p. 295Windshield wiper switch (S15)p. 295Windshield Washer Switch (S16)p. 296Switches for Windshield Wiper and Rear Window Wiper (S120, S122)p. 297Wiper Motors for Windshield and Rear Window (M03 and M04)p. 297Pumps for Windshield and Rear Window Washers (M05 and M06)p. 297Windshield wiper switch (S15)p. 297Windshield Washer Switch (S16)p. 297Switches for Windshield Wiper and Rear Window Wiper (S120, S122)p. 297+Component checksp. 297
Beacon Light Switch (S36)p. 297Beacon Light Switch (S36)p. 298+Component Testsp. 298
3-Terminal Socket Relay (K08/3)p. 2983-Terminal Socket Relay (K08/3)p. 299+Component testsp. 300
Draft sensor (B19) and/or draft sensor (B20)p. 300Stepper motor (M08)p. 300Quick withdrawal switch (S24)p. 301Switches at left and right for external control of hitch (S68 and S23)p. 301Draft sensor (B19) and/or draft sensor (B20)p. 302Stepper motor (M08)p. 302Quick withdrawal switch (S24)p. 302Switches at left and right for external control of hitch (S68 and S23)p. 302+Component testsp. 303
Rear PTO Switch (S21)p. 303Seat Switch (S40)p. 303Left and Right External Control Switches (for PTO) (S44, S121)p. 304PTO Preselector Switch (S45)p. 304Rear PTO Solenoid Valve (Y04)p. 304Rear PTO Switch (S21)p. 305Seat Switch (S40)p. 305Left and Right External Control Switches (for PTO) (S44, S121)p. 305PTO Preselector Switch (S45)p. 305Rear PTO Solenoid Valve (Y04)p. 305+Component testsp. 306
Front PTO Switch (S06)p. 306Front PTO solenoid valve (Y64)p. 306Front PTO Switch (S06)p. 306Front PTO solenoid valve (Y64)p. 306+Component checksp. 307
Front-wheel drive switch (S05)p. 307Front-wheel drive switch (S63)p. 308Front-wheel drive solenoid valve (Y03)p. 308Front-wheel drive switch (S05)p. 309Front-wheel drive switch (S63)p. 309Front-wheel drive solenoid valve (Y03)p. 309+Component checksp. 310
Differential lock switch (S22)p. 310Differential lock solenoid (Y05)p. 310Differential lock switch (S22)p. 311Differential lock solenoid (Y05)p. 311+Component Testsp. 312
Turn Signal Switch (S08)p. 312Turn Signal Switches (S08/1, S08/2)p. 313Hazard Warning Light Switch (S62)p. 313Hazard Warning Light Switch (S106)p. 314Turn Signal Switch (S08)p. 315Turn Signal Switches (S08/1, S08/2)p. 315Hazard Warning Light Switch (S62)p. 315Hazard Warning Light Switch (S106)p. 315+Component Testsp. 316
Relay for Alternator and Cold-Weather Starting Aid (K07/5, K07/6)p. 316HMS switch (S43)p. 316Record/save switch (S95)p. 317Program switch (S100)p. 317Terminating resistor (R19)p. 318Solenoid valve for cold-weather starting control (Y52)p. 318Relay for Alternator and Cold-Weather Starting Aid (K07/5, K07/6)p. 318HMS switch (S43)p. 318Record/save switch (S95)p. 318Program switch (S100)p. 318Terminating resistor (R19)p. 318Solenoid valve for cold-weather starting control (Y52)p. 318+Component checksp. 318
Acoustic alarm (K01/4)p. 319Acoustic alarm (K01/4)p. 319+Component Testsp. 320
Handbrake Switch (B37)p. 320Brake Switch (B112)p. 320Handbrake Switch (B37)p. 321Brake Switch (B112)p. 321+Component Testsp. 321
Diode for the hazard warning lights and power supply to the CAN BUS (K07/2)p. 322Diode for the hazard warning lights and power supply to the CAN BUS (K07/2)p. 322+Component Testsp. 323
Multi-function unit (A47)p. 323Transmission enable relay (K07/4)p. 323Plug for "come home" mode (K08/4)p. 324Clutch switch (S72)p. 324Gear selector switch (S81)p. 324Park lock switch (S114)p. 325Solenoid valves for forward and reverse travel (Y33, Y36)p. 325Solenoid valves K1, K2, K3 (Y32, Y39, Y40) Up to serial no. 409632p. 326Proportional valve for enable signal (Y38)p. 326Solenoid valves K1, K2 (Y62, Y63) From serial no. 409633p. 327Multi-function unit (A47)p. 327Transmission enable relay (K07/4)p. 327Plug for "come home" mode (K08/4)p. 327Clutch switch (S72)p. 327Gear selector switch (S81)p. 327Park lock switch (S114)p. 327Solenoid valves for forward and reverse travel (Y33, Y36)p. 327Solenoid valves K1, K2, K3 (Y32, Y39, Y40) Up to serial no. 409632p. 327Proportional valve for enable signal (Y38)p. 327Solenoid valves K1, K2 (Y62, Y63) From serial no. 409633p. 327+Group 25 – Functional Schematicsp. 328
Reference 240-25-001, Circuit Diagram — Summary of Referencesp. 328Reference 240-25-010, Fuses and Relaysp. 329Reference 240-25-011, Designation of Parts Shown in Functional Schematic and Harness Diagramp. 344Reference 240-25-012, Designation of Sections Shown in Functional Schematicp. 350Reference 240-25-013, Wiring Harness Designationsp. 351Reference 240-25-014, Functional Schematic (Complete Tractor)p. 352+Group 26 – Summary of Wiring Harnessesp. 399
Reference 240-26-001, Wiring Harnesses for Tractors with PowrQuad Transmission — Summary of Referencesp. 399Reference 240-26-003, Wiring Harnesses for Tractors with PowrQuad Transmission from Serial No. 436758 — Summary of Referencesp. 399Reference 240-26-002, Wiring Harnesses for Tractors with PowrQuad Plus Transmission — Summary of Referencesp. 401Reference 240-26-004, Wiring Harnesses for Tractors with PowrQuad Plus Transmission from Serial No. 424816 – Summary of Referencesp. 402+Group 26A – Wiring Harnessesp. 403
Reference 240-26-011, W01 — Wiring Harness – Power Supply and Starting Aidp. 403Reference 240-26-021, W02 – Wiring Harness – Enginep. 411Reference 240-26-041, W04 — Wiring Harness – Headlightsp. 424Reference 240-26-072, W07 — Wiring Harness – Front PTOp. 428Reference 240-26-081, W08 — Wiring Harness – Cab (Tractors with PowrQuad Transmission)p. 430Reference 240-26-082, W08 — Wiring Harness – Cab (Tractors with PowrQuad Plus Transmission)p. 489Reference 240-26-131, W13 — Wiring Harness – Clutch Senderp. 557Reference 240-26-141, W14 — Wiring Harness – 3-Terminal Power Outlet Socketp. 560Reference 240-26-181, W18 — Wiring Harness – Windshield Wiper Switch (Without Intermittent Wipe)p. 563Reference 240-26-182, W18 — Wiring Harness – Windshield Wiper Switch (With Intermittent Wipe)p. 567Reference 240-26-191, W19 – Wiring Harness – Cab Roof and Fanp. 572Reference 240-26-201, W20 — Wiring Harness – Turn Signal and Clearance Lightsp. 594Reference 240-26-211, W21 — Wiring Harness – Cab Roof Worklights, Adapterp. 601Reference 240-26-231, W23 — Wiring Harness – Windshield Wiper (with Hinged Windshield)p. 607Reference 240-26-281, W28 — Wiring Harness – Front End of Transmission (Tractors with PowrQuad Transmission)p. 609Reference 240-26-282, W28 — Wiring Harness – Front End of Transmission (Tractors with PowrQuad Plus Transmission)p. 616Reference 240-26-301, W30 – Wiring Harness – Rear End of Transmissionp. 627Reference 240-26-421, W42 — Wiring Harness – Battery Cut-Off Switch (Version 1)p. 634Reference 240-26-461, W46 — Wiring Harness – Front PTO, Adapterp. 638+Group 26B – Wiring Harnesses from Serial Number 424816p. 641
W01 — Wiring Harness – Power Supply and Starting Aid from Serial No. 436764p. 641W01 — D31p. 642W01 — F09p. 642W01 — F11p. 643W01 — F13p. 643W01 — F14p. 644W01 — G02p. 644W01 — K01p. 646W01 — K36p. 647W01 — M01p. 647W01 — R15p. 648W01 — X473p. 648W01 — X547p. 650W08 — Wiring Harness – Cab for Tractors with PowrQuad Transmission from Serial No. 436758p. 651W08 — B28/LHp. 655W08 — F03p. 656W08 — F04p. 658W08 — F05p. 660W08 — F06p. 662W08 — K01p. 664W08 — K02p. 666W08 — K07p. 669W08 — K08p. 671W08 — R19p. 672W08 — S01p. 673W08 — S01/1p. 673W08 — S04p. 674W08 — S08p. 675W08 — S09p. 676W08 — X10/1p. 676W08 — X10/2p. 677W08 — X10/3p. 677W08 — X14/1p. 679W08 — X14/2p. 680W08 — X34p. 681W08 — X35p. 682W08 — X37p. 682W08 — X38p. 684W08 — X44p. 684W08 — X106p. 686W08 — X107p. 687W08 — X113/1p. 688W08 — X113/2p. 689W08 — X120/1p. 689W08 — X120/2p. 689W08 — X122/2p. 690W08 — X125p. 691W08 — X127p. 692W08 — X128p. 692W08 — X174p. 693W08 — X230p. 693W08 — X235p. 693W08 — X239p. 695W08 — X243p. 696W08 — X245p. 697W08 — X285p. 697W08 — X311/1p. 697W08 — X311/2p. 698W08 — X324p. 699W08 — X400p. 700W08 – X430p. 702W08 — X450p. 704W08 — X473p. 706W08 — X474p. 706W08 — X488p. 706W08 — X500p. 708W08 — X516p. 710W08 — X571p. 711W08 — X579/1p. 711W08 — X579/2p. 712W08 – X616/1p. 713W08 — X616/2p. 715W08 — X616/3p. 717W08 — X617p. 719W08 — X618p. 720W08 — X620p. 721W08 — X623p. 722W08 — X629p. 723W08 — XGND1p. 723W08 — XGND4p. 725W08 — XGND5p. 726W08 — XGND6p. 727W08 — XGND43p. 727W08 — XGND47p. 728W08/1 — Wiring Harness – Cab for Tractors with PowrQuad Plus Transmission from Serial No. 434662p. 729W08/1 — B28/LHp. 733W08/1 — F03p. 734W08/1 — F04p. 736W08/1 — F05p. 738W08/1 — F06p. 740W08/1 — K01p. 742W08/1 — K02p. 744W08/1 — K07p. 747W08/1 — K08p. 750W08/1 — S01p. 752W08/1 — S09p. 753W08/1 — X14/1p. 754W08/1 — X14/2p. 755W08/1 — X20p. 756W08/1 — X25p. 757W08/1 — X26p. 758W08/1 — X34p. 759W08/1 — X35p. 760W08/1 — X37p. 760W08/1 — X38p. 762W08/1 — X39p. 763W08/1 — X44p. 763W08/1 — X106p. 765W08/1 — X107p. 766W08/1 — X113/1p. 766W08/1 — X113/2p. 767W08/1 — X120/1p. 767W08/1 — X120/2p. 768W08/1 — X122/2p. 768W08/1 — X125p. 770W08/1 — X126p. 771W08/1 — X127p. 772W08/1 — X128p. 772W08/1 — X132p. 773W08/1 — X174p. 774W08/1 — X230p. 774W08/1 — X235p. 775W08/1 — X239p. 776W08/1 — X242p. 776W08/1 — X243p. 778W08/1 — X245p. 779W08/1 — X247p. 780W08/1 — X249/3p. 781W08/1 — X285p. 781W08/1 — X322p. 783W08/1 — X324p. 784W08/1 — X400p. 785W08/1 – X430p. 787W08/1 — X440p. 789W08/1 — X450p. 790W08/1 — X471p. 792W08/1 — X473p. 793W08/1 — X474p. 793W08/1 — X487p. 794W08/1 — X488p. 794W08/1 — X489p. 796W08/1 – X490/1p. 799W08/1 – X490/1p. 800W08/1 — X500p. 801W08/1 — X503p. 802W08/1 — X571p. 803W08/1 — X615p. 804W08/1 – X616/1p. 805W08/1 — X616/2p. 807W08/1 — X616/3p. 809W08/1 — X620p. 811W08/1 — X623p. 812W08/1 — XGND1p. 812W08/1 — XGND5p. 812W08/1 — XGND43p. 813W08/1 — XGND47p. 813W28 — Front Transmission Wiring Harness for Tractors with PowrQuad Transmission from Serial No. 431378p. 815W28 — X80p. 816W28 — X81p. 816W28 — X82p. 817W28 — X83p. 817W28 — X86p. 818W28 — X91p. 818W28 — X93p. 819W28 — X500p. 820W28 — XGND46p. 821W28/1 — Front Transmission Wiring Harness for Tractors with PowrQuad Plus Transmission from Serial No. 424816p. 822W28/1 — X30p. 824W28/1 — X80p. 825W28/1 — X83p. 825W28/1 — X86p. 825W28/1 — X91p. 826W28/1 — X307p. 826W28/1 — X459p. 828W28/1 — X493p. 828W28/1 — X494p. 828W28/1 — X495p. 829W28/1 — X499p. 830W28/1 — X500p. 831W28/1 — X546p. 833W28/1 — X701p. 833W28/1 — X702p. 834W28/1 — XGND46p. 834W42 — Wiring Harness – Battery Cut-Off Switch (Version 2)p. 836W42 — F25p. 837W42 — K24/2p. 837W42 — K56p. 839W42 — K57p. 840W42 — X696p. 841W42 — XGND56p. 842+Section 245 – ELECTRONIC CONTROL UNITSp. 846
+Group 05 – Operation and General Information on Diagnosticsp. 846
Reference 245-05-000, Operation and General Information on Diagnostics – Summary of Referencesp. 846Special Toolsp. 846+Dealer/service levelp. 848
Selecting the entry levelp. 853Entering program mode via the performance monitorp. 854Entering program mode using digital display (on tractors with PowrQuad Plus transmission only)p. 854Entering program mode via the performance monitorp. 855Entering program mode by using the performance monitor with engine runningp. 855Entering program mode using digital display (on tractors with PowrQuad Plus transmission only)p. 856Entering program mode using digital display with engine running (on tractors with PowrQuad Plus transmission only)p. 857Selecting the entry levelp. 857Entering program mode via the performance monitorp. 857Entering program mode using digital display (on tractors with PowrQuad Plus transmission only)p. 857Entering program mode via the performance monitorp. 857Entering program mode by using the performance monitor with engine runningp. 857Entering program mode using digital display (on tractors with PowrQuad Plus transmission only)p. 857Entering program mode using digital display with engine running (on tractors with PowrQuad Plus transmission only)p. 857+Canceling or completing the program modep. 858
Accessing the ALL modep. 859Entering the ALL-modep. 859Checking the individual control unitsp. 859No diagnostic trouble codes are stored (NONE)p. 860Diagnostic trouble codes are stored (CODE)p. 860Clearing the diagnostic trouble codesp. 861Leave the ALL modep. 861Accessing a control unitp. 862Confirming the control unitp. 862Changing the control unitp. 863Accessing diagnostic trouble codesp. 863No diagnostic trouble codes are stored (NONE)p. 864Diagnostic trouble codes are stored (CODE)p. 864Clearing the diagnostic trouble codesp. 864Selecting the desired addressp. 865Accessing addressesp. 865Accessing input addressesp. 866Change input addressp. 866Selecting information (data in figures)p. 866Canceling the program modep. 867Completing the program modep. 867Accessing the ALL modep. 868Entering the ALL-modep. 868Checking the individual control unitsp. 868No diagnostic trouble codes are stored (NONE)p. 868Diagnostic trouble codes are stored (CODE)p. 868Clearing the diagnostic trouble codesp. 868Leave the ALL modep. 868Accessing a control unitp. 868Confirming the control unitp. 868Changing the control unitp. 868Accessing diagnostic trouble codesp. 868No diagnostic trouble codes are stored (NONE)p. 868Diagnostic trouble codes are stored (CODE)p. 868Clearing the diagnostic trouble codesp. 868Selecting the desired addressp. 868Accessing addressesp. 868Accessing input addressesp. 868Change input addressp. 868Selecting information (data in figures)p. 868Canceling the program modep. 868Completing the program modep. 868+Instrument unit adjustmentp. 869
Commencing adjustment procedurep. 869Check/alter rolling radiusp. 869Check/alter the impulses per axle revolutionp. 870Check/alter the creeper speed displayp. 871Check/alter the impulses per engine revolutionp. 871Check/alter the impulses per rear PTO revolutionp. 872Units of measurement used on the displayp. 873Check/alter the code for the coolant temperature sending unitp. 873Ending the adjustment procedurep. 873Commencing adjustment procedurep. 874Check/alter rolling radiusp. 874Check/alter the impulses per axle revolutionp. 874Check/alter the creeper speed displayp. 874Check/alter the impulses per engine revolutionp. 874Check/alter the impulses per rear PTO revolutionp. 874Units of measurement used on the displayp. 874Check/alter the code for the coolant temperature sending unitp. 874Ending the adjustment procedurep. 874Reference 245-05-005, Driving in the Diagnostic Modep. 874Reference 245-05-004, Electronic Control Units – Summary of Addressesp. 874Reference 245-05-010, BCU – Basic Control Unit – Summary of Addressesp. 875Reference 245-05-011, BIF – Basic Informator – Summary of Addressesp. 879Reference 245-05-012, EPC – Controller for PowrQuad Plus Transmission – Summary of Addressesp. 881Reference 245-05-013, PRF – Performance Monitor – Summary of Addressesp. 883Reference 245-05-006, Approved Software for Control Unitsp. 883Reference 245-05-007, Electronic Control Units – Location and Allocationp. 885+Group 20 – Data BUS Systems, Theory of Operationp. 886
Reference 245-20-001, Data BUS Systems – Summary of Referencesp. 886Reference 245-20-002, Data-BUS Systemsp. 886Reference 245-20-003, Operation of the CAN BUS Systemp. 887Reference 245-20-011, CAN BUS Systems on Tractors with PowrQuad Transmissionp. 890Reference 245-20-012, CAN BUS Systems on Tractors with PowrQuad Plus Transmissionp. 891+Group BCU – BCU – Basic Control Unitp. 893
+Address BCU248 – Tractor serial numberp. 893
Procedurep. 893Address BCU020p. 893Address BCU021p. 893Address BCU022p. 893Address BCU023p. 894Address BCU024p. 894Address BCU025p. 894Address BCU026p. 894Address BCU027p. 895Address BCU028p. 895Address BCU029p. 895Address BCU030p. 895Address BCU031p. 897Address BCU034p. 897Address BCU035p. 897Address BCU037p. 898Address BCU038p. 898Address BCU039p. 898Address BCU041p. 899Address BCU042p. 899Address BCU043p. 900BCU044p. 900Address BCU045p. 900Address BCU046p. 901Address BCU047p. 901Address BCU048p. 901Address BCU049p. 902Address BCU050p. 903Address BCU051p. 904Address BCU052p. 905Address BCU056p. 906Address BCU058p. 907Address BCU060p. 908Address BCU066p. 908Address BCU068p. 908BCU070p. 909Address BCU077p. 909Address BCU078p. 909Address BCU247p. 909Address BCU248p. 910Procedurep. 910Address BCU020p. 910Address BCU021p. 910Address BCU022p. 910Address BCU023p. 910Address BCU024p. 910Address BCU025p. 910Address BCU026p. 910Address BCU027p. 910Address BCU028p. 910Address BCU029p. 910Address BCU030p. 910Address BCU031p. 910Address BCU034p. 910Address BCU035p. 910Address BCU037p. 910Address BCU038p. 910Address BCU039p. 910Address BCU041p. 910Address BCU042p. 910Address BCU043p. 910BCU044p. 910Address BCU045p. 910Address BCU046p. 910Address BCU047p. 910Address BCU048p. 910Address BCU049p. 910Address BCU050p. 910Address BCU051p. 910Address BCU052p. 910Address BCU056p. 910Address BCU058p. 910Address BCU060p. 910Address BCU066p. 910Address BCU068p. 910BCU070p. 910Address BCU077p. 910Address BCU078p. 910Address BCU247p. 910Address BCU248p. 910+Address BCU185 – Input address for volume of lift cylinderp. 911
Address BCU101p. 911Preliminary workp. 912Accessing the input and calibration addressesp. 913Entering calibration mode; address BCU122p. 914Calibrate volume of lift cylinderp. 914Calibration of the depth setting controlp. 915Calibration of raise/lower control switchp. 915Calibration of position and draft sensorsp. 916Calibration of lowering/raise valvep. 917End of calibrationp. 917Address BCU138p. 919Address BCU145p. 919Address BCU154p. 919Address BCU165p. 920Address BCU167p. 920Address BCU174p. 921Address BCU185p. 921Address BCU101p. 922Preliminary workp. 922Accessing the input and calibration addressesp. 922Entering calibration mode; address BCU122p. 922Calibrate volume of lift cylinderp. 922Calibration of the depth setting controlp. 922Calibration of raise/lower control switchp. 922Calibration of position and draft sensorsp. 922Calibration of lowering/raise valvep. 922End of calibrationp. 922Address BCU138p. 922Address BCU145p. 922Address BCU154p. 922Address BCU165p. 922Address BCU167p. 922Address BCU174p. 922Address BCU185p. 922Reference 245-BCU-100, Preliminary Test of BCU Circuitp. 922+Operational test of rear PTO remote control on l.h. fenderp. 923
Check the wiring harnessp. 924Checking the combination of switch signals in diagnostic address BCU009p. 924Check the wiring harnessp. 925Checking the combination of switch signals in diagnostic address BCU009p. 925+Operational test on rear PTO remote control on r.h. fenderp. 926
Check the harnessp. 927Checking the combination of switch signals in diagnostic address BCU009p. 927Check the harnessp. 928Checking the combination of switch signals in diagnostic address BCU009p. 928+Operational test on rear PTO switch (S21)p. 929
Check the harness (shift console harness W10)p. 930Check combination of signals in diagnostic address BCU007p. 930Check the harness (shift console harness W10)p. 931Check combination of signals in diagnostic address BCU007p. 931+Operational test for rear PTO preselector switch (S45)p. 932
Check the wiring harnessp. 932Checking the combination of switch signals in diagnostic address BCU009p. 933Check the wiring harnessp. 933Checking the combination of switch signals in diagnostic address BCU009p. 933+Operational test for front PTO switch (S06)p. 934
Check the harnessp. 935Check the front PTO switch in diagnostic address BCU007p. 935Check the harnessp. 936Check the front PTO switch in diagnostic address BCU007p. 936+Operational test on front-wheel drive switch (S63)p. 937
Check the wiring harnessp. 938Checking the combination of switch signals in diagnostic address BCU006p. 938Check the wiring harnessp. 939Checking the combination of switch signals in diagnostic address BCU006p. 939+Operational test on front-wheel drive switch (S05)p. 940
Check the wiring harnessp. 941Checking the combination of switch signals in diagnostic address BCU006p. 941Check the wiring harnessp. 942Checking the combination of switch signals in diagnostic address BCU006p. 942+Operational test for differential lock switch (S22)p. 943
Check the wiring harnessp. 943Checking the combination of switch signals in diagnostic address BCU006p. 944Check the wiring harnessp. 944Checking the combination of switch signals in diagnostic address BCU006p. 944+Operational test for hazard warning light switch (S62)p. 945
Check the wiring harnessp. 946Checking the combination of signals in diagnostic address BCU010p. 946Check the wiring harnessp. 947Checking the combination of signals in diagnostic address BCU010p. 947+Operational test for hazard warning light switch (S106)p. 948
Check the harnessp. 948Checking the combination of signals in diagnostic address BCU010p. 949Check the harnessp. 949Checking the combination of signals in diagnostic address BCU010p. 949+Operational test for turn signal switch (S08)p. 950
Check the wiring harnessp. 950Checking the combination of signals in diagnostic address BCU010p. 951Check the wiring harnessp. 951Checking the combination of signals in diagnostic address BCU010p. 951+Operational test of wheel speed sending unit (B35)p. 952
Check wheel speed sending unit (B35)p. 953Checking the combination of signals in diagnostic address BCU004p. 953Check wheel speed sending unit (B35)p. 954Checking the combination of signals in diagnostic address BCU004p. 954+Operational test for record/save switch (S95)p. 955
Check the wiring harnessp. 956Checking the combination of signals in diagnostic address BCU014p. 956Check the wiring harnessp. 957Checking the combination of signals in diagnostic address BCU014p. 957+Operational test for HMS program switch (S100)p. 958
Check the wiring harnessp. 958Checking the combination of signals in diagnostic address BCU015p. 959Check the wiring harnessp. 959Checking the combination of signals in diagnostic address BCU015p. 959+Operational test for handbrake switch (B37)p. 960
Check the wiring harnessp. 960Checking the combination of signals in diagnostic address BCU005p. 961Check the wiring harnessp. 961Checking the combination of signals in diagnostic address BCU005p. 961+Operational test for engine speed sender (B01)p. 962
Check engine speed sender (B01)p. 963Check combination of signals in diagnostic address BCU003p. 963Check engine speed sender (B01)p. 964Check combination of signals in diagnostic address BCU003p. 964+Operational test of rear PTO speed sender (B06):p. 965
Check rear PTO speed sender (B06)p. 966Check combination of signals in diagnostic address BCU003p. 966Check rear PTO speed sender (B06)p. 967Check combination of signals in diagnostic address BCU003p. 967+Circuit/harness test for alternator relay (K07/6)p. 968
Check alternator relay (K07/6)p. 968Check alternator and injection pump control functionsp. 969Check alternator relay (K07/6)p. 969Check alternator and injection pump control functionsp. 969+Operational test on sensitivity potentiometer (B26)p. 970
Check the harness in diagnostic mode (shift console harness W10)p. 970Check the harness in diagnostic mode (cab harness W08)p. 971Check the voltages at the potentiometer in diagnostic address BCU106p. 972Check the harness in diagnostic mode (shift console harness W10)p. 972Check the harness in diagnostic mode (cab harness W08)p. 972Check the voltages at the potentiometer in diagnostic address BCU106p. 972+Operational test on depth-setting potentiometer (B27)p. 973
Check the harness (shift console harness W10)p. 974Check the harness (cab harness W08)p. 974Check the voltages at the potentiometer in diagnostic address BCU107p. 975Check the harness (shift console harness W10)p. 975Check the harness (cab harness W08)p. 975Check the voltages at the potentiometer in diagnostic address BCU107p. 975+Operational test for position sensor (B21)p. 976
Check the harness (W30 at rear end of transmission)p. 977Check the harness (cab harness W08)p. 977Check the voltages at the potentiometer in diagnostic address BCU108p. 978Check the harness (W30 at rear end of transmission)p. 978Check the harness (cab harness W08)p. 978Check the voltages at the potentiometer in diagnostic address BCU108p. 978+Operational test on rate-of-drop potentiometer (B27)p. 979
Check the harness (shift console harness W10)p. 980Check the harness (cab harness W08)p. 980Check the voltages at the potentiometer in diagnostic address BCU110p. 981Check the harness (shift console harness W10)p. 981Check the harness (cab harness W08)p. 981Check the voltages at the potentiometer in diagnostic address BCU110p. 981+Operational test on raise-limit potentiometer (B27)p. 982
Check the harness (shift console harness W10)p. 982Check the harness (cab harness W08)p. 983Check the voltages at the potentiometer in diagnostic address BCU109p. 983Check the harness (shift console harness W10)p. 984Check the harness (cab harness W08)p. 984Check the voltages at the potentiometer in diagnostic address BCU109p. 984+Operational test for rapid-raise switch (S24)p. 985
Check the harness (shift console harness W10)p. 985Check the harness (cab harness W08)p. 986Check the voltages at the potentiometer in diagnostic address BCU103p. 986Check the harness (shift console harness W10)p. 987Check the harness (cab harness W08)p. 987Check the voltages at the potentiometer in diagnostic address BCU103p. 987+Circuit/harness test for rear PTO solenoid valve (Y04)p. 988
Check solenoid coil Y04p. 989Check power supply for solenoid valvep. 989Check solenoid coil Y04p. 992Check power supply for solenoid valvep. 992+Circuit/harness test for front-wheel drive solenoid valve (Y03)p. 993
Check solenoid coil Y03p. 994Check power supply for solenoid valvep. 994Check solenoid coil Y03p. 997Check power supply for solenoid valvep. 997+Circuit/harness test for differential lock solenoid valve (Y05)p. 998
Solenoid coil (Y05) checkp. 999Check power supply for solenoid valvep. 999Solenoid coil (Y05) checkp. 1002Check power supply for solenoid valvep. 1002+Circuit/harness test for front PTO solenoid valve (Y01)p. 1003
Check solenoid coil Y01p. 1004Check power supply for solenoid valvep. 1004Check solenoid coil Y01p. 1007Check power supply for solenoid valvep. 1007+Operational test on r.h. draft sensor (B19)p. 1008
Check the harness (W30 at rear end of transmission)p. 1009Check the harness (cab harness W08)p. 1009Check signal voltage at diagnostic address BCU105p. 1010Check the harness (W30 at rear end of transmission)p. 1010Check the harness (cab harness W08)p. 1010Check signal voltage at diagnostic address BCU105p. 1010+Operational test for right remote control switch (S23)p. 1011
Check the harness (cab harness W08)p. 1012Checking the combination of signals in diagnostic addresses BCU113 and 115.p. 1012Check the harness (cab harness W08)p. 1013Checking the combination of signals in diagnostic addresses BCU113 and 115.p. 1013+Operational test for left remote control switch (S68)p. 1014
Check the harness (cab harness W08)p. 1015Checking the combination of signals in diagnostic addresses BCU112 and 114.p. 1015Check the harness (cab harness W08)p. 1016Checking the combination of signals in diagnostic addresses BCU112 and 114.p. 1016+Circuit/harness test for rockshaft control stepper motor (M08)p. 1017
Check the rockshaft control stepper motor (M08)p. 1018Check the rockshaft control stepper motor (M08)p. 1018+Operational test for HMS switch (S43)p. 1019
Check the harness (cab harness W08)p. 1020Checking the combination of signals in diagnostic address BCU014p. 1020Check the harness (cab harness W08)p. 1021Checking the combination of signals in diagnostic address BCU014p. 1021+Operational test on brake pedal switch (B112)p. 1022
Check the harnessp. 1023Checking the combination of signals in diagnostic address BCU005p. 1024Check the harnessp. 1024Checking the combination of signals in diagnostic address BCU005p. 1024+Operational test on seat switch (S40)p. 1025
Check the wiring harnessp. 1026Checking the input signal from the seat switch in diagnostic address BCU008p. 1026Check the wiring harnessp. 1027Checking the input signal from the seat switch in diagnostic address BCU008p. 1027+Operational test on reverse drive lever (A47)p. 1028
Check fusesp. 1029Check the harness in diagnostic modep. 1029Checking the reverse drive lever (A47)p. 1030Check fusesp. 1030Check the harness in diagnostic modep. 1030Checking the reverse drive lever (A47)p. 1030+Operational test on reverse drive lever (A68/1)p. 1031
Check fusesp. 1032Check the harness in diagnostic modep. 1032Checking the supply voltagep. 1033Check circuit of resistor in reverse drive lever (A68/1)p. 1033Checking the reverse drive lever (A68/1)p. 1034Check fusesp. 1034Check the harness in diagnostic modep. 1034Checking the supply voltagep. 1034Check circuit of resistor in reverse drive lever (A68/1)p. 1034Checking the reverse drive lever (A68/1)p. 1034+Operational test for turn signal switch (S08)p. 1035
Check the wiring harnessp. 1035Checking the combination of signals in diagnostic address BCU010p. 1036Check the wiring harnessp. 1036Checking the combination of signals in diagnostic address BCU010p. 1036Reference 245-BCU-200, Theory of Operation (Basic Functions)p. 1037Reference 245-BCU-201, Theory of Operation (Hitch Control)p. 1040+Group BIF – BIF – Basic Informatorp. 1042
+Address BIF248 – Tractor serial numberp. 1042
Procedurep. 1042Address BIF022p. 1042Address BIF023p. 1042Address BIF024p. 1042Address BIF027p. 1043Address BIF028p. 1043Address BIF029p. 1043Address BIF035p. 1043Address BIF036p. 1044Address BIF037p. 1044Address BIF038p. 1044Address BIF039p. 1045Address BIF060p. 1045Address BIF066p. 1045Address BIF247p. 1046Address BIF248p. 1046Procedurep. 1046Address BIF022p. 1046Address BIF023p. 1046Address BIF024p. 1046Address BIF027p. 1046Address BIF028p. 1046Address BIF029p. 1046Address BIF035p. 1046Address BIF036p. 1046Address BIF037p. 1046Address BIF038p. 1046Address BIF039p. 1046Address BIF060p. 1046Address BIF066p. 1046Address BIF247p. 1046Address BIF248p. 1046Reference 245-BIF-100, Preliminary Test of BIF Circuitp. 1046+Operational test for fuel gauge sender (B03)p. 1047
Check the harness (W28 at front end of transmission)p. 1048Check fuel gauge sender (B03)p. 1048Checking the fuel level in diagnostic address BIF031p. 1049Check the harness (W28 at front end of transmission)p. 1049Check fuel gauge sender (B03)p. 1049Checking the fuel level in diagnostic address BIF031p. 1049+Operational test for sender (B08) of coolant temperature gaugep. 1050
Checking the wiring harness (engine harness W02)p. 1051Checking the coolant temperature sender (B08)p. 1051Checking the temperature values of coolant temperature sender (B08) in diagnostic address BIF034p. 1052Checking the wiring harness (engine harness W02)p. 1052Checking the coolant temperature sender (B08)p. 1052Checking the temperature values of coolant temperature sender (B08) in diagnostic address BIF034p. 1052+Operational test for hydraulic oil temperature sender (B60)p. 1053
Check the harness (W28 at front end of transmission)p. 1054Checking the hydraulic oil temperature sender (B60)p. 1054Checking hydraulic oil temperature sender (B60) in diagnostic address BIF033p. 1055Check the harness (W28 at front end of transmission)p. 1055Checking the hydraulic oil temperature sender (B60)p. 1055Checking hydraulic oil temperature sender (B60) in diagnostic address BIF033p. 1055+Operational test for engine oil pressure sender (B04)p. 1056
Checking the wiring harness (engine harness W02)p. 1057Checking engine oil pressure sender (B04) in diagnostic address BIF013p. 1057Checking the wiring harness (engine harness W02)p. 1058Checking engine oil pressure sender (B04) in diagnostic address BIF013p. 1058+Operational test for transmission oil pressure sender (B31)p. 1059
Check the harness (W28 at front end of transmission)p. 1060Checking transmission oil pressure sender (B31) in diagnostic address BIF012p. 1060Check the harness (W28 at front end of transmission)p. 1061Checking transmission oil pressure sender (B31) in diagnostic address BIF012p. 1061+Operational test for sender (B02) of air cleaner restriction warning lightp. 1062
Checking the wiring harness (engine harness W02)p. 1063Checking the sender (B02; restricted air cleaner warning light) in diagnostic address BIF012p. 1063Checking the wiring harness (engine harness W02)p. 1064Checking the sender (B02; restricted air cleaner warning light) in diagnostic address BIF012p. 1064+Alternator D+ voltage, operational testp. 1065
Checking the alternatorp. 1066Checking the alternator D+ voltage in diagnostic address BIF032p. 1066Checking the alternatorp. 1066Checking the alternator D+ voltage in diagnostic address BIF032p. 1066+Sender (B07; oil filter restriction indicator light)p. 1067
Check the harness (W28 at front end of transmission)p. 1068Checking the sender (B07; restricted oil filter warning light) in diagnostic address BIF012p. 1068Check the harness (W28 at front end of transmission)p. 1069Checking the sender (B07; restricted oil filter warning light) in diagnostic address BIF012p. 1069+Operational test for hydraulic oil filter, restriction warning switch (B111)p. 1070
Check the harness (W28 at front end of transmission)p. 1071Checking the restriction warning switch (B111) in the hydraulic oil filter in diagnostic address BIF012p. 1072Check the harness (W28 at front end of transmission)p. 1072Checking the restriction warning switch (B111) in the hydraulic oil filter in diagnostic address BIF012p. 1072Reference 245-BIF-200, Theory of Operationp. 1073+Group EPC – EPC – Control Unit for PowrQuad Plus Transmissionp. 1075
+Address EPC248 – Input address, serial number of current tractorp. 1075
Address EPC026p. 1075Address EPC028p. 1075Address EPC029p. 1076Address EPC030p. 1076Address EPC033p. 1076Address EPC035p. 1077Address EPC037p. 1077Address EPC038 – Transmission calibration, requirementsp. 1078Select address EPC037p. 1079Entering the program modep. 1079Entering calibration mode; address EPC038p. 1080Calibration instructions and error messagesp. 1080Address EPC040p. 1082Address EPC041p. 1083Address EPC042p. 1083Address EPC043p. 1084Address EPC047p. 1084Address EPC134p. 1085Address EPC135p. 1085Address EPC136p. 1085Address EPC137p. 1086Address EPC156p. 1086Address EPC157p. 1086Address EPC158p. 1087Address EPC160p. 1087Address EPC162p. 1087Address EPC164p. 1087Address EPC247p. 1087Address EPC248p. 1088Address EPC026p. 1088Address EPC028p. 1088Address EPC029p. 1088Address EPC030p. 1088Address EPC033p. 1088Address EPC035p. 1088Address EPC037p. 1088Address EPC038 – Transmission calibration, requirementsp. 1088Select address EPC037p. 1088Entering the program modep. 1088Entering calibration mode; address EPC038p. 1088Calibration instructions and error messagesp. 1088Address EPC040p. 1088Address EPC041p. 1088Address EPC042p. 1088Address EPC043p. 1088Address EPC047p. 1088Address EPC134p. 1088Address EPC135p. 1088Address EPC136p. 1088Address EPC137p. 1088Address EPC156p. 1088Address EPC157p. 1088Address EPC158p. 1088Address EPC160p. 1088Address EPC162p. 1088Address EPC164p. 1088Address EPC247p. 1088Address EPC248p. 1088Reference 245-EPC-002, EPC – Fine-Tuningp. 1089Reference 245-EPC-100, Test Procedure in the Event of Occasional EPC Circuit Problemsp. 1091+Operational test on enable proportional solenoid valve (Y38)p. 1093
Check resistance at proportional solenoid valve Y38p. 1094Check clutch charge pressurep. 1094Check resistance at proportional solenoid valve Y38p. 1095Check clutch charge pressurep. 1095+Operational test on circuit of forward solenoid valve (Y33)p. 1096
Check resistance at forward solenoid valve (Y33)p. 1097Check the power supply for forward solenoid valve (Y33)p. 1097Check the amperage for forward solenoid valve (Y33)p. 1098Checking the enable pressurep. 1098Check resistance at forward solenoid valve (Y33)p. 1099Check the power supply for forward solenoid valve (Y33)p. 1099Check the amperage for forward solenoid valve (Y33)p. 1099Checking the enable pressurep. 1099+Operational test on circuit of reverse solenoid valve (Y36)p. 1100
Check resistance at reverse solenoid valve (Y36)p. 1101Check the power supply for reverse solenoid valve (Y36)p. 1101Check the amperage for reverse solenoid valve (Y36)p. 1102Checking the enable pressurep. 1102Check resistance at reverse solenoid valve (Y36)p. 1103Check the power supply for reverse solenoid valve (Y36)p. 1103Check the amperage for reverse solenoid valve (Y36)p. 1103Checking the enable pressurep. 1103+Operational test for solenoid valve K1 (Y40) circuitp. 1104
Check resistance at K1 solenoid valve (Y40)p. 1105Check supply voltage for K1 solenoid valve (Y40)p. 1105Check amperage for K1 solenoid valve (Y40)p. 1106Check transmission speedp. 1106Check resistance at K1 solenoid valve (Y40)p. 1107Check supply voltage for K1 solenoid valve (Y40)p. 1107Check amperage for K1 solenoid valve (Y40)p. 1107Check transmission speedp. 1107+Operational test for circuit of solenoid valve K2 (Y39)p. 1108
Check resistance at K2 solenoid valve (Y39)p. 1109Check the supply voltage for K2 solenoid valve (Y39)p. 1109Check the amperage for K2 solenoid valve (Y39)p. 1110Check transmission speedp. 1110Check resistance at K2 solenoid valve (Y39)p. 1111Check the supply voltage for K2 solenoid valve (Y39)p. 1111Check the amperage for K2 solenoid valve (Y39)p. 1111Check transmission speedp. 1111+Operational test for circuit of solenoid valve K3 (Y32)p. 1112
Check resistance at K3 solenoid valve (Y32)p. 1113Check supply voltage for K3 solenoid valve (Y32)p. 1113Check amperage for K3 solenoid valve (Y32)p. 1114Check transmission speedp. 1114Check resistance at K3 solenoid valve (Y32)p. 1115Check supply voltage for K3 solenoid valve (Y32)p. 1115Check amperage for K3 solenoid valve (Y32)p. 1115Check transmission speedp. 1115+Operational test on transmission speed sender (B104)p. 1116
Checking the transmission speed sender (B104)p. 1117Check supply voltage for transmission speed senderp. 1117Checking the transmission speed sender (B104)p. 1118Checking the transmission speed sender (B104)p. 1118Check supply voltage for transmission speed senderp. 1118Checking the transmission speed sender (B104)p. 1118+Enable pressure sender (B105), operational testp. 1119
Check the supply voltagep. 1120Signal lead 549 checkp. 1120Checking the voltage at the enable pressure sending unit (B105)p. 1121Checking the pressure range of the enable pressure sender (B105)p. 1121Check the supply voltagep. 1122Signal lead 549 checkp. 1122Checking the voltage at the enable pressure sending unit (B105)p. 1122Checking the pressure range of the enable pressure sender (B105)p. 1122+Operational test on clutch pedal switch (S72)p. 1123
Checking the clutch pedal switch S72p. 1124Checking circuit of clutch pedal switch (S72) at diagnostic address EPC009p. 1124Checking the clutch pedal switch S72p. 1125Checking circuit of clutch pedal switch (S72) at diagnostic address EPC009p. 1125+Clutch pedal potentiometer (B65), operational testp. 1126
Check the harness in diagnostic mode (clutch sender harness W13)p. 1127Check the harness in diagnostic mode (cab harness W08)p. 1128Checking voltage range of potentiometer (B65) at diagnostic address EPC012p. 1128Check the harness in diagnostic mode (clutch sender harness W13)p. 1129Check the harness in diagnostic mode (cab harness W08)p. 1129Checking voltage range of potentiometer (B65) at diagnostic address EPC012p. 1129+Upshift/downshift switch (S81), operational testp. 1130
Check harness (W08) in diagnostic modep. 1131Checking the supply voltagep. 1131Repairing the gear-shift leverp. 1132Checking the circuit of the switch for upshift/downshift (S81)p. 1132Checking the circuit of the switch for upshift/downshift on the gear-shift lever (S81/1)p. 1133Checking the circuit of the switch for upshift/downshift on the multi-function lever (S81/2)p. 1133Check harness (W08) in diagnostic modep. 1133Checking the supply voltagep. 1133Repairing the gear-shift leverp. 1133Checking the circuit of the switch for upshift/downshift (S81)p. 1133Checking the circuit of the switch for upshift/downshift on the gear-shift lever (S81/1)p. 1133Checking the circuit of the switch for upshift/downshift on the multi-function lever (S81/2)p. 1133+Transmission enable relay (K07/4), operational testp. 1134
Checking transmission enable relay (K07/4)p. 1135Checking transmission enable signal (lead 553)p. 1135Checking coil circuit for transmission enable relayp. 1136Checking the clutch pedal switchp. 1136Checking the direction signals to the BCUp. 1136Checking the circuit of the transmission enable relayp. 1137Checking transmission enable relay (K07/4)p. 1137Checking transmission enable signal (lead 553)p. 1137Checking coil circuit for transmission enable relayp. 1137Checking the clutch pedal switchp. 1137Checking the direction signals to the BCUp. 1137Checking the circuit of the transmission enable relayp. 1137+Circuit test for Come-Home plug (K08/4)p. 1138
Operational test for Come-Home plug (K08/4)p. 1138Operational test for Come-Home plug (K08/4)p. 1139+Operational test on reverse drive lever (A47)p. 1140
Check fusesp. 1141Check the harness in diagnostic modep. 1141Check the detent coil in the reverse drive leverp. 1143Checking the reverse drive lever (A47)p. 1143Check the detent coil in the reverse drive leverp. 1143Check fusesp. 1144Check the harness in diagnostic modep. 1144Check the detent coil in the reverse drive leverp. 1144Checking the reverse drive lever (A47)p. 1144Check the detent coil in the reverse drive leverp. 1144+Park switch (S114), operational testp. 1145
Check the harness in diagnostic mode (cab harness W08)p. 1145Checking the park switch circuit at address EPC007p. 1146Check the harness in diagnostic mode (cab harness W08)p. 1146Checking the park switch circuit at address EPC007p. 1146+Operational test on reverse drive lever (A68/1)p. 1147
Check fusesp. 1148Check the harness in diagnostic modep. 1148Checking the supply voltagep. 1149Check circuit of N indicator light in reverse drive lever (A68/1)p. 1149Checking the reverse drive lever (A68/1)p. 1150Check fusesp. 1150Check the harness in diagnostic modep. 1150Checking the supply voltagep. 1150Check circuit of N indicator light in reverse drive lever (A68/1)p. 1150Checking the reverse drive lever (A68/1)p. 1150+Solenoid valve 1 circuit (Y62), operational testp. 1151
Check resistance of solenoid valve 1 (Y62)p. 1152Check supply voltage for solenoid valve 1 (Y62)p. 1152Check amperage for solenoid valve 1 (Y62)p. 1153Check solenoid valve 1 (Y62)p. 1153Check resistance of solenoid valve 1 (Y62)p. 1154Check supply voltage for solenoid valve 1 (Y62)p. 1154Check amperage for solenoid valve 1 (Y62)p. 1154Check solenoid valve 1 (Y62)p. 1154+Solenoid valve 2 circuit (Y63), operational testp. 1155
Check resistance of solenoid valve 2 (Y63)p. 1156Check supply voltage for solenoid valve 2 (Y63)p. 1156Check amperage for solenoid valve 2 (Y63)p. 1157Check solenoid valve 2 (Y63)p. 1157Check resistance of solenoid valve 2 (Y63)p. 1158Check supply voltage for solenoid valve 2 (Y63)p. 1158Check amperage for solenoid valve 2 (Y63)p. 1158Check solenoid valve 2 (Y63)p. 1158+Operational test on reverse drive lever (A68/2)p. 1159
Check fusesp. 1160Check the harness in diagnostic modep. 1160Checking the supply voltagep. 1161Check circuit of neutral switch in reverse drive lever (A68/2)p. 1161Checking the reverse drive lever (A68/2)p. 1162Check fusesp. 1162Check the harness in diagnostic modep. 1162Checking the supply voltagep. 1162Check circuit of neutral switch in reverse drive lever (A68/2)p. 1162Checking the reverse drive lever (A68/2)p. 1162Reference 245-EPC-200, Theory of Operationp. 1163+Group PRF – PRF – Performance Monitorp. 1166
+Address PRF248 – Serial number of current tractorp. 1166
Procedurep. 1166Address PRF020p. 1166Address PRF022p. 1166Address PRF023p. 1166Address PRF060p. 1167Address PRF070p. 1167Address PRF247p. 1167Address PRF248p. 1167Procedurep. 1168Address PRF020p. 1168Address PRF022p. 1168Address PRF023p. 1168Address PRF060p. 1168Address PRF070p. 1168Address PRF247p. 1168Address PRF248p. 1168Reference 245-PRF-011, Calibration of Ground Speed Sensor (Radar)p. 1169Reference 245-PRF-021, Setting Wheel Slip Back to Zerop. 1171+Operational test of performance monitorp. 1172
Checking keypad status (top)p. 1172Checking keypad status (bottom)p. 1172Checking keypad status (top)p. 1173Checking keypad status (bottom)p. 1173Reference 245-PRF-200, Theory of Operationp. 1174+Section 255 – POWRQUAD AND POWRQUAD PLUS TRANSMISSIONSp. 1178
+Group 05 – Introductory Checksp. 1178
+Preliminary checksp. 1178
General informationp. 1178Checking the condition of the hydraulic oilp. 1179Checking the tractor for external leaks with the engine shut offp. 1180Checking the tractor for internal leaks or overheated oil with the engine runningp. 1180General informationp. 1181Checking the condition of the hydraulic oilp. 1181Checking the tractor for external leaks with the engine shut offp. 1181Checking the tractor for internal leaks or overheated oil with the engine runningp. 1181+Group 10 – Operational Check-Outp. 1182
+Operational checksp. 1182
Check the neutral start circuitp. 1182Check if the vehicle′s clutch separates properlyp. 1182Check vehicle′s clutch for slippagep. 1183Check slip phase of the vehicle′s clutchp. 1183Checking the park lockp. 1184Checking neutral-to-gear modulationp. 1184Checking forward/reverse modulationp. 1185Gear-to-gear modulation checkp. 1185Checking front-wheel drivep. 1185Checking the differential lockp. 1186Checking the rear PTOp. 1186Transmission (test drive)p. 1187Check the neutral start circuitp. 1187Check if the vehicle′s clutch separates properlyp. 1187Check vehicle′s clutch for slippagep. 1187Check slip phase of the vehicle′s clutchp. 1187Checking the park lockp. 1187Checking neutral-to-gear modulationp. 1187Checking forward/reverse modulationp. 1187Gear-to-gear modulation checkp. 1187Checking front-wheel drivep. 1187Checking the differential lockp. 1187Checking the rear PTOp. 1187Transmission (test drive)p. 1187+Group 15 – Tests and Adjustmentsp. 1188
Reference 255-15-000, PowrQuad Transmission — Summary of Referencesp. 1188Reference 255-15-030, Special Toolsp. 1188+System checkp. 1189
Preconditions for proper system checking procedurep. 1189Checking the temperature of the transmission oilp. 1189System pressure checkp. 1189Check components dependent on system pressurep. 1190Lube oil pressure checkp. 1190Cooling oil pressure check (forward clutch)p. 1191Cooling oil pressure check (reverse brake)p. 1191Pressure at the forward clutch, checkp. 1191Pressure at the reverse brake, checkp. 1192Pressure at the B1 brake, checkp. 1192Pressure at the B2 brake, checkp. 1192Pressure at the B3 brake, checkp. 1193Pressure at the C4 clutch, checkp. 1193Cooler, checking rate of flowp. 1193Check cooler relief valvep. 1194Preconditions for proper system checking procedurep. 1194Checking the temperature of the transmission oilp. 1194System pressure checkp. 1194Check components dependent on system pressurep. 1194Lube oil pressure checkp. 1194Cooling oil pressure check (forward clutch)p. 1194Cooling oil pressure check (reverse brake)p. 1194Pressure at the forward clutch, checkp. 1194Pressure at the reverse brake, checkp. 1194Pressure at the B1 brake, checkp. 1194Pressure at the B2 brake, checkp. 1194Pressure at the B3 brake, checkp. 1194Pressure at the C4 clutch, checkp. 1194Cooler, checking rate of flowp. 1194Check cooler relief valvep. 1194Reference 255-15-002, PowrQuad Transmission — Test Portsp. 1195Reference 255-15-003, PowrQuad Transmission — Checking Rate of Flow at Coolerp. 1197Reference 255-15-021, PowrQuad Transmission — Check Cooler Relief Valvep. 1201Reference 255-15-004, PowrQuad Transmission — Checking System Pressurep. 1205Reference 255-15-005, PowrQuad Transmission—Checking Lube Oil Pressurep. 1206Reference 255-15-006, PowrQuad Transmission—Checking Cooling Oil Pressure (Forward Clutch)p. 1207Reference 255-15-007, PowrQuad Transmission — Checking Cooling Oil Pressure (Reverse Brake)p. 1209Reference 255-15-008, PowrQuad Transmission—Checking Pressure at Forward Clutchp. 1210Reference 255-15-009, PowrQuad Transmission — Checking Pressure at Reverse Brakep. 1211Reference 255-15-010, PowrQuad Transmission — Checking Pressure at B1 Brakep. 1212Reference 255-15-011, PowrQuad Transmission — Checking Pressure at B2 Brakep. 1213Reference 255-15-012, PowrQuad Transmission — Checking Pressure at B3 Brakep. 1214Reference 255-15-013, PowrQuad Transmission — Checking Pressure at C4 Clutchp. 1216Reference 255-15-014, PowrQuad Transmission—Adjusting System Pressurep. 1218Reference 255-15-015, PowrQuad Transmission — Test Result Tablep. 1220Reference 255-15-016, PowrQuad Transmission — Adjusting the Reverse Drive Linkagep. 1221Reference 255-15-017, PowrQuad Transmission — Checking and Adjusting the Shift Unitsp. 1223Reference 255-15-018, Adjusting the Reverse Drive Lever (Reverser Control on Steering Column)p. 1226Reference 255-15-019, PowrQuad Transmission — Adjusting the Clutch Pedalp. 1228Reference 255-15-025, Reduction Gear – Adjusting the Shift Linkagep. 1229+Group 20 – Theory of Operationp. 1231
Reference 255-20-001, PowrQuad and PowrQuad Plus Transmissions — Summary of Referencesp. 1231Reference 255-20-050, PowrQuad Transmission — Layoutp. 1232Reference 255-20-100, PowrQuad Module — Layoutp. 1234Reference 255-20-280, PowrQuad Module—Sectional and 3D Viewp. 1236Reference 255-20-290, PowrQuad Module — Location of Valves, Sensors and Switchesp. 1241Reference 255-20-110, PowrQuad Module—Element Engagement Chartp. 1249Reference 255-20-120, PowrQuad Module—Pneumatic Pumpp. 1250Reference 255-20-130, PowrQuad Module—Transmission Oil Pumpp. 1252Reference 255-20-140, PowrQuad Module—Pressure-Regulating Valve and Filter Relief Valvep. 1254Reference 255-20-150, PowrQuad Module—Overspeed Relief Valve and Anti-Cavitation Check Valvep. 1259Reference 255-20-160, PowrQuad Module—Clutch Cooling Componentsp. 1260Reference 255-20-170, PowrQuad Module—Clutch Cooling Valve (Forward/Reverse)p. 1260Reference 255-20-180, PowrQuad Module—System 1 Oil and System 2 Oilp. 1260Reference 255-20-190, PowrQuad Module—Hydraulic Schematic, Mechanically Actuated PowrQuad Modulep. 1261Reference 255-20-200, PowrQuad Module—Operation of Forward/Reverse Modulation, Mechanically Actuated PowrQuad Modulep. 1263Reference 255-20-210, PowrQuad Module—Neutral Start Circuit, Mechanically Actuated PowrQuad Modulep. 1266Reference 255-20-220, PowrQuad Module—Operation of Gear-to-Gear Modulation, Mechanically Actuated PowrQuad Modulep. 1267Reference 255-20-230, PowrQuad Module—Hydraulic Schematic, Electrically Actuated PowrQuad Modulep. 1270Reference 255-20-240, PowrQuad Module—Operation of Forward/Reverse Modulation, Electrically Actuated PowrQuad Modulep. 1275Reference 255-20-250, PowrQuad Module — Operation of Gear-to-Gear Modulation, Electrically Actuated PowrQuad Modulep. 1278Reference 255-20-260, PowrQuad Module—Reverse Drive Lever and Gear Shift Lever, Mechanically Actuated PowrQuad Modulep. 1282Reference 255-20-270, PowrQuad Module — Reverse Drive Lever and Range Shift Lever with Gearshift Switches, Electrically Actuated PowrQuad Modulep. 1282Reference 255-20-400, PowrQuad Plus Transmission — Summary of Transmission Versionsp. 1284Reference 255-20-410, PowrQuad Plus Transmission—Sub-Assembliesp. 1284Reference 255-20-420, PowrQuad Plus Transmission — Description of Shift Functionsp. 1284Reference 255-20-440, PowrQuad Plus Transmission — Description of Clutch Actuationp. 1285Reference 255-20-500 — Range Transmission, Layoutp. 1286Reference 255-20-510 — Range Transmission, Power Flowp. 1287Reference 255-20-520—Range Transmission, Park Lockp. 1291Reference 255-20-800, Reduction Gear—Operationp. 1292Reference 255-20-810, Reduction Gear — Power Flowp. 1294+Section 256 – DRIVE SYSTEMSp. 1298
+Group 10 – Operational Check-Outp. 1298
+Operational checkp. 1298
Checking the preconditions for proper operation of the hydraulic systemp. 1298Checking front-wheel drivep. 1298Checking the differential lockp. 1299Checking the front PTOp. 1299Check the rear PTOp. 1299Checking the preconditions for proper operation of the hydraulic systemp. 1300Checking front-wheel drivep. 1300Checking the differential lockp. 1300Checking the front PTOp. 1300Check the rear PTOp. 1300+Group 15 – Tests and Adjustmentsp. 1301
Reference 256-15-000, Drive Systems — Summary of Referencesp. 1301Reference 256-15-010, Special Toolsp. 1301+System checkp. 1303
Checking the diagnostic trouble codesp. 1303Checking the preconditions for proper operation of the hydraulic systemp. 1303Checking the temperature of the hydraulic oilp. 1303Check system pressure — PowrQuad transmissionp. 1304Checking pressure at the front-wheel drive clutchp. 1304Checking pressure at the hydraulic differential lockp. 1305Checking pressure at the rear PTOp. 1305Check system pressure — front PTOp. 1306Checking pressure at the front PTO clutchp. 1307Checking the diagnostic trouble codesp. 1308Checking the preconditions for proper operation of the hydraulic systemp. 1308Checking the temperature of the hydraulic oilp. 1308Check system pressure — PowrQuad transmissionp. 1308Checking pressure at the front-wheel drive clutchp. 1308Checking pressure at the hydraulic differential lockp. 1308Checking pressure at the rear PTOp. 1308Check system pressure — front PTOp. 1308Checking pressure at the front PTO clutchp. 1308Reference 256-15-002, Checking Pressure at the Front-Wheel Drive Clutchp. 1308Reference 256-15-003, Checking Pressure at the Hydraulic Differential Lockp. 1309Reference 256-15-004, Checking Pressure at the Rear PTOp. 1311Reference 256-15-005, Checking Pressure at the Front PTOp. 1315Reference 256-15-006, Drive Systems — Test Result Tablep. 1317+Group 20 – Theory of Operationp. 1318
Reference 256-20-001, Drive Systems — Summary of Referencesp. 1318Reference 256-20-100, Front-Wheel Drive Clutch—Layoutp. 1319Reference 256-20-110, Front-Wheel Drive Clutch—Oil and Power Flowsp. 1320Reference 256-20-120, Front-Wheel Drive Clutch — Cooling and Lubricationp. 1323Reference 256-20-200, Differential—Layoutp. 1324Reference 256-20-220, Differential — Power Flowsp. 1326Reference 256-20-230, Differential—Oil-Flowsp. 1328Reference 256-20-300, Final Drives—Operation and Layoutp. 1331Reference 256-20-400, Rear PTO Options—Descriptionp. 1332Reference 256-20-410, Rear PTO Options—PTO Modulating Valve and Solenoid Valvep. 1334Reference 256-20-420, Rear PTO Options—PTO Clutch and PTO Brakep. 1336Reference 256-20-440, Rear PTO Options — Power Flowsp. 1337Reference 256-20-500, Front PTO Options — Operationp. 1342Reference 256-20-510, Front PTO Options — Description, Hydraulic Circuitp. 1344Reference 256-20-520, Front PTO Options — Solenoid Valvep. 1344Reference 256-20-530, Front PTO Options — Hydraulic Pumpp. 1345Reference 256-20-540, Front PTO Options — Oil Coolerp. 1345+Section 260 – STEERING AND BRAKESp. 1348
+Group 05 – Troubleshootingp. 1348
Reference 260-05-010, Hydrostatic Steeringp. 1348Reference 260-05-020, Hydraulic Brakesp. 1349Reference 260-05-030, Handbrakep. 1349Reference 260-05-040, Hydraulic Trailer Brakep. 1349Reference 260-05-050, Air Brakesp. 1349+Group 10 – Operational Check-Outp. 1350
Reference 260-10-001, Safety Informationp. 1350Reference 260-10-010, Steering Checkp. 1350Reference 260-10-020, Brake Checkp. 1352+Group 15 – Tests and Adjustmentsp. 1354
Reference 260-15-001, Tests and Adjustments — Summary of Referencesp. 1354Reference 260-15-010, Special Toolsp. 1355Reference 260-15-020, Connecting SensoControl Test Equipmentp. 1358Reference 260-15-030, Specificationsp. 1359+Introductory checksp. 1360
Introductory checks for transmission and hydraulic diagnosisp. 1360Check mechanical componentsp. 1360Check hydraulic componentsp. 1362Hydraulic system diagnosticsp. 1365Introductory checks for transmission and hydraulic diagnosisp. 1365Check mechanical componentsp. 1365Check hydraulic componentsp. 1365Hydraulic system diagnosticsp. 1365Reference 260-15-050, Checking the Brake Systemp. 1365Reference 260-15-060, Bleeding the Brakesp. 1367Reference 260-15-070, Adjusting the Brake Pedals and Switchesp. 1370Reference 260-15-080, Checking the Handbrakep. 1371Reference 260-15-090, Checking the Trailer Brake Valvep. 1373Reference 260-15-100, Adjusting the Trailer Brake Valvep. 1376+Preliminary checksp. 1378
Visual inspection of brake systemp. 1378Check the red ‘supply” coupling endp. 1378Checking the air-brake system for leaksp. 1378Check the dual-line brakep. 1379Check the single-line brake (if equipped)p. 1380Check the pressure-regulating valve and air-brake fill timep. 1381Visual inspection of brake systemp. 1382Check the red ‘supply” coupling endp. 1382Checking the air-brake system for leaksp. 1382Check the dual-line brakep. 1382Check the single-line brake (if equipped)p. 1382Check the pressure-regulating valve and air-brake fill timep. 1382Reference 260-15-110, Checking the Air Brake (Visual Inspection)p. 1382Reference 260-15-120, Checking the System for Leaksp. 1382Reference 260-15-130, Checking the Coupling End (Supply)p. 1383Reference 260-15-150, Checking the Dual-Line Brakep. 1384Reference 260-15-160, Checking the Single-Line Brakep. 1386Reference 260-15-170, Adjusting the Handbrake when Air Brakes are Equippedp. 1388Reference 260-15-180, Checking the Pressure-Regulating Valve and Air-Brake Fill Timep. 1390+Group 20 – Theory of Operationp. 1391
Reference 260-20-001, Theory of Operation — Summary of Referencesp. 1391Reference 260-20-010, Description of Steering System, Operationp. 1392Reference 260-20-030, Brake Valve, Operationp. 1398Reference 260-20-031, Two-Stage Brake Valvep. 1401Reference 260-20-040, Rear Wheel Brakes, Operationp. 1409Reference 260-20-050, Handbrake, Descriptionp. 1409Reference 260-20-060, Trailer Brake Valve, Descriptionp. 1411Reference 260-20-080, Description of Air Brake Systemp. 1414+Section 270 – HYDRAULIC SYSTEMp. 1420
+Group 10 – Operational Check-Outp. 1420
Reference 270-10-001, Operational Checkout of Hydraulic System, Summary of Referencesp. 1420Reference 270-10-010, Hydraulic System Load Checkp. 1420Reference 270-10-020, Hitch Control – Operational Checkoutp. 1421Reference 270-10-030, External Control of Hitch – Operational Checkoutp. 1421Reference 270-10-040, Selective Control Valves – Operational Checkoutp. 1423+Group 15 – Tests and Adjustmentsp. 1425
Reference 270-15-000, PC Hydraulic System — Summary of Referencesp. 1425Reference 270-15-001, Safety Measures for Hydraulic Checksp. 1425Reference 270-15-002, Special Toolsp. 1427Reference 270-15-003, Connecting SensoControl Test Equipmentp. 1430Reference 270-15-010, Heating Up Hydraulic Oilp. 1430+System checkp. 1432
Checking the diagnostic trouble codesp. 1432Checking the preconditions for proper operation of the hydraulic systemp. 1433Checking the temperature of the hydraulic oilp. 1433Check system pressurep. 1433Steering pressure check (primary circuit)p. 1435Checking the LS (Load-Sensing) pressurep. 1435Checking the LS pressure (Load-Sensing) of the steering systemp. 1436Checking the diagnostic trouble codesp. 1437Checking the preconditions for proper operation of the hydraulic systemp. 1437Checking the temperature of the hydraulic oilp. 1437Check system pressurep. 1437Steering pressure check (primary circuit)p. 1437Checking the LS (Load-Sensing) pressurep. 1437Checking the LS pressure (Load-Sensing) of the steering systemp. 1437Reference 270-15-021, PC Hydraulic System — Test Result Tablep. 1438Reference 270-15-052, Checking the Delivery Rate of the Hydraulic Pumpp. 1439Reference 270-15-070, Preparing Pressure Testp. 1441Reference 270-15-071, Checking the LS Pressurep. 1444Reference 270-15-072, Checking the System Pressurep. 1446Reference 270-15-073, Checking the Steering Pressure (Primary Circuit)p. 1447Reference 270-15-074, Checking the Braking Pressure of the Hydraulic Trailer Brake (Primary Circuit)p. 1448Reference 270-15-075, Checking the LS Pressure of the Steering Systemp. 1450Pressure Relief Valve Testp. 1451Reference 270-15-091, Selective Control Valves — Checking for Leaks at Couplersp. 1451Reference 270-15-110, Checking the Stepper Motor and Rockshaft Valvep. 1453Reference 270-15-130, Rockshaft Valve — Checking for Leaksp. 1454Reference 270-15-131, Rockshaft Valve (Wide Version) — Checking the Pressure-Relief Valvep. 1455Reference 270-15-132, Rockshaft Valve — Checking Depth to Which Pressure and Discharge Valves are Screwed Inp. 1455Reference 270-15-150, Rockshaft — Checking the Position Sensorp. 1456Reference 270-15-151, Rockshaft Valve — Testing and Adjusting the Draft Sensorp. 1458+Group 20 – Theory of Operationp. 1460
Reference 270-20-002, PC Hydraulic System — Summary of Referencesp. 1460Reference 270-20-060, PC Hydraulic System — Descriptionp. 1460Reference 270-20-070, PC Hydraulic System — Operationp. 1461Reference 270-20-080, PC Hydraulic System — Symbolic Representationp. 1462Reference 270-20-090, PC Hydraulic System — Schematic Viewp. 1464Reference 270-20-160, PC Hydraulic System — Description of Hydraulic Pumpp. 1466Reference 270-20-170, PC Hydraulic System — Oil Lines of Hydraulic Pumpp. 1466Reference 270-20-180, PC Hydraulic System—Operation of Hydraulic Pumpp. 1468Reference 270-20-190, Filter Screen — Descriptionp. 1469Reference 270-20-200, Transmission Oil Cooler — Descriptionp. 1469Reference 270-20-260, PC Hydraulic System — Description and Arrangement of Shuttle Valvesp. 1470Reference 270-20-290, PC Hydraulic System — Description of Priority Valve and By-Pass Valvep. 1471Reference 270-20-300, PC Hydraulic System — Operation of Priority Valve and By-Pass Valvep. 1472PC Hydraulic System – Operation of Pressure-Relief Valvep. 1473Reference 270-20-320, Rockshaft — Descriptionp. 1473Reference 270-20-330, Rockshaft — Operation of Rockshaft Controlp. 1475Reference 270-20-340, Rockshaft — Operation of Rockshaft Valvep. 1477Reference 270-20-350, Rockshaft — Operation of Position Sensorp. 1481Reference 270-20-360, Rockshaft — Operation of Draft Sensorp. 1482Reference 270-20-370, Rockshaft — Description of Controlsp. 1482Reference 270-20-380, Rockshaft — Direct Actuationp. 1483Reference 270-20-390, 105, 205 and 305 Series Selective Control Valves — Descriptionp. 1484Reference 270-20-480, Couplers — Descriptionp. 1485Reference 270-20-600, 105 Series Selective Control Valves — Operationp. 1487Reference 270-20-610, 205 Series Selective Control Valves — Operationp. 1489Reference 270-20-620, 305 Series Selective Control Valves — Operationp. 1491Reference 270-20-625, 305 Series Selective Control Valves — Flow Controlp. 1492Reference 270-20-630, LS Valve, Shuttle Valve and By-Pass Valve — Operationp. 1494+Section 280 – MISCELLANEOUSp. 1497
+Group 10 – Operational Check-Outp. 1497
Reference 280-10-001, Various Operational Tests, Summary of Referencesp. 1497Reference 280-10-010, Operational Test on Front-Wheel Drive Axlep. 1498Check Positive Front Wheel Lead at Front-Wheel Drive Axlep. 1500+Group 15 – Tests and Adjustmentsp. 1502
Reference 280-15-001, Various Tests and Adjustments, Summary of Referencesp. 1502+Correcting the nitrogen prechargep. 1503
Preparing for the checkp. 1503Installing the FKM10474 fill-and-check devicep. 1503Check nitrogen prechargep. 1504Preparing to fill with nitrogenp. 1504Filling the accumulator with nitrogenp. 1504Remove the fill and check devicep. 1506Preparing for the checkp. 1507Installing the FKM10474 fill-and-check devicep. 1507Check nitrogen prechargep. 1507Preparing to fill with nitrogenp. 1507Filling the accumulator with nitrogenp. 1507Remove the fill and check devicep. 1507Reference 280-15-015, Checking Front Hitch for Leaksp. 1507+Group 20 – Theory of Operationp. 1508
Reference 280-20-001, Theory of Operation, Summary of Referencesp. 1508Reference 280-20-008, Front Hitch Functional Group – Identificationp. 1509Reference 280-20-009, Circuit Plan – Front Hitchp. 1510Reference 280-20-010, Operation of Multi-Valvep. 1512+Section 290 – OPERATOR′S CABp. 1521
+Group 10 – Operational Check-Outp. 1521
Reference 290-10-001, Air-Conditioning System, Heater and Operator′s Seat——Summary of Referencesp. 1521+Operational checksp. 1522
Tests with the engine shut offp. 1522Checking the air-conditioning system with the engine switched onp. 1524Air-conditioning temperature checkp. 1524Checking the heater valvep. 1525Tests with the engine shut offp. 1525Checking the air-conditioning system with the engine switched onp. 1525Air-conditioning temperature checkp. 1525Checking the heater valvep. 1525+Operational Checksp. 1526
Checking the function of the electricsp. 1526Checking the pneumaticsp. 1527Checking the function of the electricsp. 1527Checking the pneumaticsp. 1527+Group 15 – Tests and Adjustmentsp. 1528
Reference 290-15-001, Air-Conditioning System, Heater and Operator′s Seat, Test and Adjustments—Summary of Referencesp. 1528Reference 290-15-010, Safety at Workp. 1528Reference 290-15-015, Handling Refrigerantp. 1528Reference 290-15-020, Safety Equipmentp. 1529Reference 290-15-025, In an Emergencyp. 1529Reference 290-15-030, Storage of Refrigerant Containersp. 1529Reference 290-15-035, R134a Refrigerantp. 1530Reference 290-15-040, Importantp. 1530Reference 290-15-050, Special Toolsp. 1531Reference 290-15-060, Specificationsp. 1533+Air-conditioning system checksp. 1534
Visual checkp. 1534Preliminary checksp. 1534Exclude improper operationp. 1536System pressure check (static)p. 1537System pressure test (dynamic)p. 1538Leak testp. 1540Component testsp. 1541Visual checkp. 1543Preliminary checksp. 1543Exclude improper operationp. 1543System pressure check (static)p. 1543System pressure test (dynamic)p. 1543Leak testp. 1543Component testsp. 1543Reference 290-15-070, Pressure Deviationsp. 1544+Group 20 – Theory of Operationp. 1545
Reference 290-20-001, Air-Conditioning, Heating and Ventilation Systems, Operation—Summary of Referencesp. 1545Reference 290-20-010, Principle of Heat Exchangep. 1546Reference 290-20-015, R134a Refrigerantp. 1546Reference 290-20-020, Refrigerant Circuit Layoutp. 1548Reference 290-20-030, Functional Description of Components—Refrigerant Circuitp. 1549Reference 290-20-031, Functional Description of Components—Compressorp. 1550Reference 290-20-032, Functional Description of Components—Condenserp. 1551Reference 290-20-033, Functional Description of Components—Receiver-Drierp. 1551Reference 290-20-034, Functional Description of Components—Expansion Valvep. 1553Reference 290-20-035, Functional Description of Components—Thermostat Switchp. 1554Reference 290-20-036, Functional Description of Components—Evaporatorp. 1555Reference 290-20-037, Functional Description of Components—High/Low Pressure Switchp. 1555Reference 290-20-038, Functional Description of Components—Control Knobs for Heating and Coolingp. 1556Reference 290-20-040, Heating and Ventilationp. 1557+Section 299 – SPECIAL TOOLSp. 1560
+Group 05 – Special Tools (Dealer-Fabricated)p. 1560
Reference 299-05-001, Special Tools (Dealer-Fabricated) — Summaryp. 1560Reference 299-05-010, Holding Toolp. 1560Reference 299-05-011, Adjusting Toolp. 1560Reference 299-05-012, DFRW2—Needle Valve Test Hose Assemblyp. 1561Reference 299-05-015, Special Tool for 29-BIT CAN BUS—DFLX12p. 1561Reference 299-05-016, DFLX14—Solenoid Test Harnessp. 1562+Group 10 – Special Tools and Test Equipmentp. 1564
AR52361 – Socketp. 1564D01019AA – Manually operated hydraulic pumpp. 1564FKM10002 or JT05470 – Pressure test kitp. 1564Battery Load Tester FKM10409p. 1565FKM10443 – Charging valvep. 1565FKM10444 – Leak detectorp. 1565FKM10445 – Universal pressure test kitp. 1566FKM10447 – Refrigerant container (R134a; 920g; 750 ml)p. 1566FKM10470 – Pressure Measuring System (stage 1)p. 1567FKM10471 – Pressure measuring system (stage 2)p. 1567FKM10472 – Flow measurement systemp. 1568FKM10472-4 – Temperature sensorp. 1568FKM10482 – Pressure Test Kitp. 1568Clamp-on Current Probe JT02153p. 1569JT03248 – Fittingp. 1569JT05791A – Multimeterp. 1569JT07115 – Pressure test kitp. 1570KJD10128 – Fittingp. 1570KJD10292 – Diagnostic Harnessp. 1570KJD10194 – Pressure Test Kitp. 1571KJD10352 – Restriction fittingp. 1571KJD10495 – Hose connectorp. 1571RE200689 – Performance monitorp. 1571RE37996 – Adjusting toolp. 1572 - Section 255 — PowrQuad and PowrQuad Plus Transmissions
- Group 05 — Introductory Checks
- Group 10 — Operational Check-Out
- Group 15 — Tests and Adjustments
- Group 20 — Theory of Operation
- Section 256 — Drive Systems
- Group 10 — Operational Check-Out
- Group 15 — Tests and Adjustments
- Group 20 — Theory of Operation
- Section 260 — Steering and Brakes
- Group 05 — Troubleshooting
- Group 10 — Operational Check-Out
- Group 15 — Tests and Adjustments
- Group 20 — Theory of Operation
- Section 270 — Hydraulic System
- Group 10 — Operational Check-Out
- Group 15 — Tests and Adjustments
- Group 20 — Theory of Operation
- Section 280 — Miscellaneous
- Group 10 — Operational Check-Out
- Group 15 — Tests and Adjustments
- Group 20 — Theory of Operation
- Section 290 — Operator’s Cab
- Group 10 — Operational Check-Out
- Group 15 — Tests and Adjustments
- Group 20 — Theory of Operation
- Section 299 — Special Tools
- Group 05 — Special Tools (Dealer-Fabricated)
- Group 10 — Special Tools and Test Equipment
Taken together, these sections give a technician a complete diagnostic framework for the 5620, 5720 and 5820. You get preliminary and operational checks that narrow down where a fault lives, component-level tests that confirm it, the adjustment procedures to correct it, and a theory-of-operation chapter that explains why the assembly behaves the way it does. The electrical portion is especially deep — individual circuit checks, component testing, functional schematics for every circuit group, and wiring harness breakdowns separated by cab, engine, headlight, front PTO, transmission front and rear, and battery cut-off harness, with separate coverage for tractors before and from certain serial number breakpoints.
Systems and Assemblies You Can Diagnose
The John Deere 5620 5720 5820 Tractor Diagnostic Tests Service Manual TM4791 covers the full tractor, not just the powertrain. Engine checks include dynamometer testing and PTO power output measurement, with the pre-checks (stand-by pressure, transmission oil level and temperature, viscous fan speed, battery condition, fuel filter condition) that affect a valid power reading. Fuel, air intake and cooling tests cover the air intake system, cooling system leak checks, thermostat opening temperature, viscous fan clutch, fuel transfer pump, and hand throttle and accelerator adjustment.
On the electrical side, the manual provides fuse and relay maps with amp ratings, wire number and color code charts, component identification tables, and a seven-step electrical test procedure. Component tests are given for the starting motor, alternator, battery, neutral start switch, fuel preheater, injection pump shut-off valve, battery cut-off relays, and a long list of senders including coolant temperature, oil pressure, transmission oil pressure, transmission oil temperature, hydraulic oil filter restriction, air cleaner restriction, and the various relays and solenoids on the tractor.
The electronic control unit section explains how to enter diagnostic mode, read diagnostic trouble codes, access addresses, input configuration values, and clear codes using the performance monitor or the digital display. Coverage includes the BCU, BIF, EPC (PowrQuad Plus transmission controller) and PRF performance monitor, plus CAN BUS theory of operation for both PowrQuad and PowrQuad Plus tractor variants.
IMAGES PREVIEW
Transmission coverage includes the PowrQuad and PowrQuad Plus modules in both mechanically and electrically actuated forms, with test ports, system pressure, lube oil pressure, cooling oil pressure, forward clutch, reverse brake, B1, B2, B3 and C4 pressures, cooler rate of flow, cooler relief valve, and adjustment procedures for the reverse drive linkage, shift units, reverse drive lever and clutch pedal. Drive system tests cover the front-wheel drive clutch, hydraulic differential lock and rear PTO pressures. Steering and brake coverage includes the hydrostatic steering system, hydraulic brakes, handbrake, hydraulic trailer brake and air brakes, with bleeding, pedal and switch adjustment, and pressure-regulating valve checks.
The hydraulic system section gives load checks, hitch control and remote control operational checkout, SCV operational checkout, system pressure, LS pressure, steering pressure, trailer brake pressure, pump delivery rate, pressure-relief valve testing, stepper motor and rockshaft valve checks, rockshaft leak testing, position sensor checks, and draft sensor testing and adjustment. The operator’s cab section covers the air-conditioning and heater test sequence and the air comfort seat test sequence, with refrigerant handling precautions and system pressure charts.
Why This Manual Matters for the 5620, 5720 and 5820
These tractors mix mechanical and electronic control in a way that makes guessing expensive. A slow hydraulic response might be a pump, a priority valve, a shuttle valve, a leaking seal, or an electronic modulation setting — and the manual gives you the test sequence to tell them apart. A transmission that shifts hard might need a calibration value changed, a solenoid valve checked, or the enable pressure read at the right test port. The John Deere 5620 5720 5820 Tractor Diagnostic Tests Service Manual TM4791 puts the pressure values, resistance values, voltage values and adjustment values in one place, along with the procedure to reach the test port or connector.
For anyone maintaining or repairing these tractors, the value is in doing the diagnosis correctly the first time. Reading the theory-of-operation chapter before chasing a fault saves hours, and having the exact specification for a solenoid resistance, a clutch pressure, a thermostat opening temperature or a hitch calibration step removes the guesswork. The manual also documents the serial number breakpoints where Deere changed components — for example, the electrical starting aid, battery cut-off switch versions, speed sender resistance values, reverse drive lever variants, and the change from three speed valves to two on the PowrQuad Plus transmission — so you know which version of a procedure applies to the tractor in front of you.
Instant PDF Delivery
This is a digital PDF download. There is no printed book, no shipping and no waiting. Once payment clears, the file is available immediately and can be saved to a phone, tablet, laptop or desktop, opened with any standard PDF reader, and printed page by page or section by section if you prefer a paper copy in the shop. The complete 1,572-page John Deere 5620 5720 5820 Tractor Diagnostic Tests Service Manual TM4791 is delivered as a single file, so you can search across sections, jump between electrical schematics and the tests that reference them, and keep the whole diagnostic library on hand wherever the tractor is.
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