John Deere 7500A E-Cut Hybrid and 8000A E-Cut Hybrid Fairway Mowers Technical Manual TM177819 27OCT22 PDF

Contents
General Information
Safety
Live With Safety
Follow Safety Instructions
Avoid Harmful Asbestos Dust
Avoid Heating Near Pressurized Fluid Lines
Avoid High-Pressure Fluids
Avoid Hot Exhaust
Avoid Static Electricity Risk When Refueling
Construct Dealer-Made Tools Safely
Decommissioning — Proper Recycling and Disposal of Fluids and Components
Drain Gasoline When Storing Machine
Follow Tire Recommendations
Handle Agricultural Chemicals Safely
Handle Fluids Safely—Avoid Fires
Illuminate Work Area Safely
Keep Electronic Control Unit Connectors Clean
Keep ROPS Installed Properly
Park Machine Safely
Practice Safe Maintenance
Prepare for Emergencies
Prevent Acid Burns
Prevent Battery Explosions
Prevent Machine Runaway
Protect Against High Pressure Spray
Recognize Safety Information
Remove Paint Before Welding or Heating
Service Accumulator Systems Safely
Service and Operate Chemical Sprayers Safely
Service Cooling System Safely
Service Machines Safely
Service Tires Safely
Servicing Electronic Control Units
Support Machine Properly
Understand Signal Words
Use Proper Lifting Equipment
Use Proper Tools
Wait Before Opening High-Pressure Fuel System
Wear Protective Clothing
Welding Near Electronic Control Units
Work in Clean Area
Work In Ventilated Area
General Specifications
Metric Bolt and Screw Torque Values
Unified Inch Bolt and Screw Torque Values
Metric Cap Screw Torque Values—Grade 7
Service Recommendations for O-Ring Boss Fittings
Service Recommendations For Flat Face O-Ring Seal Fittings
Fuel and Lubricants
Diesel Fuel
Diesel Fuel Storage
Oil Filters
Hydrostatic Transmission and Hydraulic Oil
Biodegradable Oil
Converting From HY-GARD to BIO HY-GARD
Grease – North America
Grease – Europe
Alternative Lubricants
Synthetic Lubricants
Lubricant Storage
Mixing of Lubricants
Diesel Engine Coolant
John Deere COOL-GARD™ II Coolant Extender
Diesel Engine Coolant Drain Interval – North America
Diesel Engine Coolant Drain Interval – Europe
Machine Specifications
Machine Specifications
Serial Number Location
Engine Repair — 3TNV84T
General Information
Summary of References
Remove and Install
Remove and Install Starting Motor
Remove and Install Turbocharger
Repair Turbocharger
Prelube Turbocharger
Remove and Install Oil Pan, Crankcase Extension, and Strainer
Remove and Install Flywheel
Remove and Install Fuel Injection Nozzle
Remove Fuel Injection Pump
Install Fuel Injection Pump
Remove 12 Volt Alternator Drive Belt
Install 12 Volt Alternator Drive Belt
Remove and Install Engine
Remove and Install Rocker Arm Cover
Remove and Install Rocker Arm Assembly
Remove and Install Cylinder Head and Valves
Remove and Install Exhaust Manifold
Remove and Install Intake Manifold
Remove and Install Piston and Connecting Rod
Replace Crankshaft Rear Oil Seal
Replace Crankshaft Front Oil Seal
Remove and Install Crankshaft Gear
Remove and Install Camshaft
Remove and Install Camshaft Gear
Remove and Install Cam Followers
Remove and Install Timing Gear Cover
Remove and Install Idler Gear
Remove and Install Timing Gear Cover Mounting Plate
Remove and Install Oil Pump
Remove and Install Oil Cooler
Remove and Install Thermostat
Remove and Install Coolant Pump
Remove 48 Volt Alternator Drive Belt
Install 48 Volt Alternator Drive Belt
Remove and Install Crankshaft and Main Bearings
Disassemble and Assemble
Disassemble and Assemble Cylinder Head and Valves
Disassemble and Assemble Piston and Connecting Rod
Disassemble and Assemble Oil Pump
Disassemble and Assemble Water Separator
Disassemble and Assemble Fuel Injection Nozzles
Disassemble and Assemble Starting Motor
Disassemble and Assemble Starter Gear Train
Disassemble, Inspect, and Assemble Starter Solenoid
Inspect
Inspect Rocker Arm Assembly
Inspect Cylinder Head and Valves
Grind Valve Seats
Lap Valves
Measure Piston-to-Cylinder Head Clearance
Inspect Piston and Connecting Rod
Inspect Cylinder Bore
Inspect Cylinder Bore Taper and Out-of-Round
Inspect Crankshaft and Main Bearings
Inspect Camshaft
Inspect Cam Followers
Inspect Idler Gear
Inspect Oil Pump
Inspect Coolant Pump
Inspect and Clean Fuel Injection Nozzles
Inspect and Test Starting Motor
Engine Repair — 3TNV86CT
General Information
Summary of References
Engine Information
Remove and Install
Remove Engine 3TNV86CT
Install Engine 3TNV86CT
Remove Starting Motor—3TNV86CT
Install Starting Motor—3TNV86CT
Service Fuel Filter and Water Separator
Electrical Repair
General Information
Summary of References
Main Wiring Harness Routing Graphics
Command Arm Wiring Harness Routing Graphics
Remove and Install
Remove Battery
Install Battery
Remove 12 Volt Alternator
Install 12 Volt Alternator
Remove 48 Volt Alternator
Install 48 Volt Alternator
Remove 48 Volt Voltage Regulator
Install 48 Volt Voltage Regulator
Control Unit RMC — Remove and Install
Control Unit VCU — Remove and Install
Control Unit ECU — Remove and Install
Drivetrain Repair
General Information
Summary of References
Specifications
Remove and Install
Remove Driveline Components
Install Driveline Components
Remove Hydrostatic Pump
Install Hydrostatic Pump
Remove Front Wheel Motor Assembly
Install Front Wheel Motor Assembly
Remove Rear Wheel Motor—8000A
Install Rear Wheel Motor—8000A
Disassemble and Assemble
Disassemble Hydrostatic Pump
Assemble Hydrostatic Pump
Disassemble and Inspect Front Wheel Motor Assembly
Assemble Front Wheel Motor Assembly
Inspect
Inspect Hydrostatic Pump
Wheel Motor Final Checks
Steering and Brake Repair
General Information
Summary of References
Specifications
Remove and Install
Remove and Install Steering Wheel
Remove Steering Column Cover
Install Steering Column Cover
Remove Steering Valve
Install Steering Valve
Remove Steering Cylinder—7500A
Install Steering Cylinder—7500A
Remove Steering Spindle—7500A
Install Steering Spindle—7500A
Remove and Install Tie Rod End—7500A
Remove Rear Axle—7500A
Install Rear Axle—7500A
Remove and Install Steering Cylinder—8000A
Remove and Install Steering Clevis—8000A
Repair Brakes
Hydraulics Repair
General Information
Summary of References
Hydraulic Start Up Procedure
Specifications
Remove and Install
Remove and Install Lift Valve
Remove and Install Brake Release Valve
Remove Lift Cylinder
Install Lift Cylinder
Remove Hydraulic Pump
Install Hydraulic Pump
Disassemble and Assemble
Disassemble and Assemble Lift Valve
Disassemble and Assemble Brake Valve
Disassemble Hydraulic Pump
Assemble Hydraulic Pump
Attachments and Machine-Specific Repair
General Information
Summary of References
Essential or Recommended Tools
Other Material
Specifications
Remove and Install
Remove and Install Cutting Unit
Remove and Install Reel
Inspect Reel and Bed Knife
Remove and Install Bed Knife
Remove and Install Front Roller
Repair Front Roller
Remove and Install Rear Roller
Remove and Install Electric Reel Motor
Remove and Install Reel Drive Belt
Remove Power Brush
Install Power Brush
Remove Greens Tender Conditioner
Install Greens Tender Conditioner
Remove Lift Arm Bushing
Install Lift Arm Bushing
Remove Lift Arm
Install Lift Arm
Remove and Install Front Wheels
Remove and Install Rear Wheels
Remove and Install Seat
Remove Fuel Tank
Install Fuel Tank
Forward and Reverse Pedals — Remove and Install
Disassemble and Assemble
Disassemble Greens Tender Conditioner Drive
Assemble Greens Tender Conditioner Drive
Disassemble Greens Tender Conditioner Shaft
Assemble Greens Tender Conditioner Shaft
Disassemble Shaft Support Bracket
Assemble Shaft Support Bracket
Inspect
Reel Motor Orientation
Diagnostic Trouble Codes
ECU — Diagnostic Trouble Codes
ECU 000051.03 — Air Throttle Actuator Position Signal Out of Range High
ECU 000051.04 — Air Throttle Actuator Position Signal Out of Range Low
ECU 000100.01 — Engine Oil Pressure Signal Extremely Low
ECU 000100.04 — Engine Oil Pressure Signal Out of Range Low
ECU 000102.03 — Manifold Air Pressure Signal Out of Range High
ECU 000102.04 — Manifold Air Pressure Signal Out of Range Low
ECU 000102.13 — Manifold Air Pressure Signal Calibration Fault
ECU 000105.03 — Manifold Air Temperature Signal Out of Range High
ECU 000105.04 — Manifold Air Temperature Signal Out of Range Low
ECU 000108.03 — Barometric Pressure Signal Out of Range High
ECU 000108.04 — Barometric Pressure Signal Out of Range Low
ECU 000108.10 — Barometric Pressure Signal Abnormal
ECU 000110.00 — Engine Coolant Temperature Signal Extremely High
ECU 000110.03 — Engine Coolant Temperature Signal Out of Range High
ECU 000110.04 — Engine Coolant Temperature Signal Out of Range Low
ECU 000157.00 — Fuel Rail Pressure Signal Extremely High
ECU 000157.03 — Fuel Rail Pressure Signal Out of Range High
ECU 000157.04 — Fuel Rail Pressure Signal Out of Range Low
ECU 000157.15 — Fuel Rail Pressure Signal Slightly High
ECU 000157.16 — Fuel Rail Pressure Limiter Open
ECU 000157.18 — Fuel Rail Pressure Signal Moderately Low
ECU 000167.01 — Charging System Voltage Extremely Low
Diagnostic Procedure
ECU 000167.05 — Charging System Circuit Out of Range Low
Diagnostic Procedure
ECU 000173.03 — Exhaust Manifold Temperature Signal Out of Range High
ECU 000173.04 — Exhaust Manifold Temperature Signal Out of Range Low
ECU 000174.00 — Fuel Temperature Signal Extremely High
ECU 000174.03 — Fuel Temperature Signal Out of Range High
ECU 000174.04 — Fuel Temperature Signal Out of Range Low
ECU 000190.00 — Engine Speed Extremely High
ECU 000412.03 — EGR Temperature Signal Out of Range High
ECU 000412.04 — EGR Temperature Signal Out of Range Low
ECU 000630.12 — ECU EEPROM Error
ECU 000633.03 — Suction Control Valve Circuit Out of Range High
ECU 000633.05 — Suction Control Valve Circuit Has High Resistance
ECU 000633.06 — Suction Control Valve Circuit Has Low Resistance
ECU 000651.03 — Injector #4 Circuit Out of Range High
ECU 000651.05 — Injector #4 Circuit Has High Resistance
ECU 000651.06 — Injector #4 Circuit Has Low Resistance
ECU 000652.03 — Injector #3 Circuit Out of Range High
ECU 000652.05 — Injector #3 Circuit Has High Resistance
ECU 000652.06 — Injector #3 Circuit Has Low Resistance
ECU 000653.03 — Injector #2 Circuit Out of Range High
ECU 000653.05 — Injector #2 Circuit Has High Resistance
ECU 000653.06 — Injector #2 Circuit Has Low Resistance
ECU 000654.03 — Injector #1 Circuit Out of Range High
ECU 000654.05 — Injector #1 Circuit Has High Resistance
ECU 001209.03 — Exhaust Manifold Pressure Signal Out of Range High
ECU 001209.04 — Exhaust Manifold Pressure Signal Out of Range Low
ECU 001209.13 — Exhaust Manifold Pressure Signal Calibration Fault
ECU 001485.02 — Main Relay / ECU
ECU Powers Off Diagnostic Procedure
ECU 002791.00 — EGR Valve Drive Circuit Voltage Extremely High
ECU 002791.01 — EGR Valve Drive Circuit Voltage Extremely Low
ECU 002791.07 — EGR Valve Position Error
ECU 002791.09 — EGR Valve Communication Error
ECU 002791.12 — EGR Valve Actuator Internal Error
ECU 002797.06 — Injector High Voltage Supply #1 Circuit Has Low Resistance
ECU 002798.06 — Injector High Voltage Supply #2 Circuit Has Low Resistance
ECU 002950.03 — Air Throttle Actuator Drive Circuit 1 Out of Range High
ECU 002950.04 — Air Throttle Actuator Drive Circuit 1 Out of Range Low
ECU 002950.05 — Air Throttle Actuator Drive Circuit Has High Resistance
ECU 002950.06 — Air Throttle Actuator Drive Circuit Has Low Resistance
ECU 002951.03 — Air Throttle Actuator Drive Circuit 2 Out of Range High
ECU 002951.04 — Air Throttle Actuator Drive Circuit 2 Out of Range Low
ECU 003242.00 — DOC Inlet Temperature Extremely High
ECU 003242.03 — DOC Inlet Temperature Signal Out of Range High
ECU 003242.04 — DOC Inlet Temperature Signal Out of Range Low
ECU 003250.00 — DOC Outlet Temperature Extremely High
ECU 003250.01 — DOC Outlet Temperature Extremely Low
ECU 003250.03 — DOC Outlet Temperature Signal Out of Range High
ECU 003250.04 — DOC Outlet Temperature Signal Out of Range Low
ECU 003251.00 — DPF Differential Pressure Extremely High
ECU 003251.03 — DPF Differential Pressure Signal Out of Range High
ECU 003251.04 — DPF Differential Pressure Signal Out of Range Low
ECU 003251.13 — DPF Differential Pressure Sensor Calibration Fault
ECU 003609.03 — DPF Inlet Pressure Signal Out of Range High
ECU 003609.04 — DPF Inlet Pressure Signal Out of Range Low
ECU 003695.14 — Exhaust Filter Cleaning Inhibited by Operator Interface (PDU)
ECU 003719.00 — Calculated Soot Level Extremely High
ECU 003719.07 — DPF Recovery Prohibited
ECU 003719.09 — DPF Recovery Failed
ECU 003719.16 — Calculated Soot Level Moderately High
ECU 003720.00 — Calculated Ash Level Extremely High
ECU 003720.16 — Calculated Ash Level Moderately High
ECU 004257.12 — Injector High Voltage Supply Internal Failure
ECU 522243.05 — Engine Starter Solenoid Lockout Relay Driver Circuit Has High Resistance
Procedure
ECU 522243.06 — Engine Starter Solenoid Lockout Relay Driver Circuit Has Low Resistance
Procedure
ECU 522400.02 — Crankshaft Position Signal Invalid
ECU 522400.05 — Crankshaft Position Signal Missing
ECU 522401.02 — Camshaft Position Signal Invalid
ECU 522401.05 — Camshaft Position Signal Missing
ECU 522401.07 — Camshaft Position and Crankshaft Position Signals Out of Sync
ECU 522571.03 — Suction Control Valve Low Side Drive Circuit Out of Range High
ECU 522571.06 — Suction Control Valve Low Side Drive Circuit Has Low Resistance
ECU 522572.06 — Suction Control Valve High Side Drive Circuit Has Low Resistance
ECU 522572.11 — Suction Control Valve High Side Drive Circuit Current Fault
ECU 522573.00 — Calculated Soot Level High
ECU 522574.00 — DPF Differential Pressure Soot Level High
ECU 522575.07 — Parked Regeneration Failed
ECU 522576.12 — ECU EEPROM Read Error
ECU 522577.11 — Parked Regeneration Not Performed
ECU 522578.12 — ECU EEPROM Write Error
ECU 522579.12 — EGR Valve Actuator Low Resistance Error
ECU 522580.12 — EGR Valve Position Internal Error
ECU 522582.07 — EGR Valve Initialization Error
ECU 522583.01 — EGR Valve Actuator High Temperature Sensor Fault
ECU 522584.01 — EGR Valve Actuator Low Temperature Sensor Fault
ECU 522585.12 — ECU Internal Fault 17
ECU 522588.12 — ECU Internal Voltage High Error
ECU 523489.12 — ECU Internal Voltage Low Error
ECU522591.12 — Sensor Supply #2 Voltage Error
ECU 522592.12 — Sensor Supply #3 Voltage Error
ECU 522596.09 — No CAN Message Received From Source Address 1
ECU 522597.09 — No CAN Message Received From Source Address 2
ECU 522599.09 — Vehicle Controller CAN Communication Error #1
ECU 522600.09 — Vehicle Controller CAN Communication Error #2
ECU 522601.09 — Vehicle Controller CAN Communication Error #3
ECU 522609.09 — Vehicle Controller CAN Communication Error #4
ECU 522610.09 — EGR Valve CAN Communication Error
Diagnostic Procedure
ECU 522617.12 — EGR Valve Position Mismatch
ECU 522618.09 — Vehicle Controller CAN communication Error #5
ECU 522619.09 — Vehicle Controller Communication Error
ECU 522744.04 — ECU Power Supply Output #1 Circuit Has Low Resistance
Diagnostic Procedure
ECU 522994.04 — ECU Power Supply Output #2 Circuit Has Low Resistance
ECU 523249.05 — Crankshaft Position and Camshaft Position Signals Invalid
ECU 523460.07 — Fuel Rail Pressure Error For a Duration
ECU 523462.13 — Injector #1 Calibration Error
ECU 523463.13 — Injector #2 Calibration Error
ECU 523464.13 — Injector #3 Calibration Error
ECU 523465.13 — Injector #4 Calibration Error
ECU 523468.09 — Rail Pressure Limiter Open
ECU 523469.00 — Rail Pressure Limiter Occurrence Count Extremely High
ECU 523470.00 — Rail Pressure Limiter Cumulative Time Extremely High
ECU 523489.00 — Fuel Rail Pressure Extremely High For a Duration
ECU 523491.00 — Fuel Temperature Extremely High For a Duration
RMC — Diagnostic Trouble Codes
RMC DTC Quick Reference Table
Data Point Live Readings
RMC 000628.12 — Stuck in Boot Block
Stuck in Boot Block
RMC 002513.03 — Orange Phase (A) is Shorted to Supply
Orange Phase (A) is Shorted to Supply
RMC 002513.04 — Orange Phase (A) is Shorted to Ground
Orange Phase (A) is Shorted to Ground
RMC 002513.05 — Orange Phase (A) is Open
Orange Phase (A) is Open
RMC 002514.03 — Black Phase (B) is Shorted to Supply
Black Phase (B) is Shorted to Supply
RMC 002514.04 — Black Phase (B) is Shorted to Ground
Black Phase (B) is Shorted to Ground
RMC 002514.05 — Black Phase (B) is Open
Black Phase (B) is Open
RMC 002515.03 — Green Phase (C) is Shorted to Supply
Green Phase (C) is Shorted to Supply
RMC 002515.04 — Green Phase (C) is Shorted to Ground
Green Phase (C) is Shorted to Ground
RMC 002515.05 — Green Phase (C) is Open
Green Phase (C) is Open
RMC 003510.00 — Speed Sensor Voltage High
Speed Sensor Voltage High
RMC 003510.01 — Speed Sensor Voltage Low
Speed Sensor Voltage Low
RMC 003511.00 — Hall Voltage High
Hall Voltage High
RMC 003511.01 — Hall Voltage Low
Hall Voltage Low
RMC 003597.00 — Controller 14V High
Controller 14V High
RMC 003597.01 — Controller 14V Low
Controller 14V Low
RMC 520960.02 — ECU Communications Over CAN Have Been Lost
Controller Communication
RMC 521153.15 — Controller Shutdown Over Temp
Controller Shutdown Over Temp
RMC 522327.00 — Motor Over Temp
Motor Over Temp
RMC 522917.00 — Controller Current Threshold 3 Shutdown
Controller Current Threshold 3 Shutdown
RMC 522917.06 — Controller Hardware Current Shutdown
Controller Hardware Current Shutdown
RMC 522917.15 — Controller Current Threshold 1 Shutdown
Controller Current Threshold 1 Shutdown
RMC 522917.16 — Controller Current Threshold 2 Shutdown
Controller Current Threshold 2 Shutdown
RMC 522918.00 — Motor Start Failed 3x Fault
Motor Start Failed 3x Fault
RMC 522918.02 — Motor Spin Direction Shutdown
Motor Spin Direction Shutdown
RMC 522918.15 — Motor Stalled While Running
Motor Stalled While Running
RMC 522919.03 — Hall Resync Shutdown
Hall Resync Shutdown
RMC 522919.12 — Invalid Hall State Detected at Start Up
Invalid Hall State Detected at Start Up
RMC 523666.00 — Bus Voltage High
Bus Voltage High
RMC 523666.01 — Bus Voltage Low
Bus Voltage Low
RMC 523666.02 — Low VBus on Start
Bus Voltage Low
RMC 523666.15 — Bus Voltage Low
Bus Voltage Low
VCU — Diagnostic Trouble Codes
VCU 000070.14 — Park Brake Switch
Procedure
VCU 000096.16 — Fuel Level Sensor
Diagnosis
VCU 000096.18 — Fuel Level Sensor
Diagnosis
VCU 000100.01 — Engine Oil Pressure
Diagnostic Procedure
VCU 000110.00 — Engine Coolant
Diagnostic Procedure
VCU 000158.00 — Switched Power (ELX) Fault
Diagnostics
VCU 000168.00 — Supply Voltage (VBAT) Fault
Diagnostics
VCU 000168.01 — Supply Voltage (VBAT) Critically Low
Diagnostics
VCU 000168.16 — Supply Voltage (VBAT) Fault
Diagnostics
VCU 000168.18 — Supply Voltage (VBAT) Fault
Diagnostics
VCU 000190.00 — Engine Speed
Diagnostics
VCU 000190.01 — Engine Speed
Diagnostics
VCU 000190.02 — Engine Speed Sensor
Diagnostics
VCU 000190.09 — Engine Speed
Diagnostics
VCU 000628.12 — Controller Stuck in Boot Block
Procedure
VCU 000629.12 — Watch Dog Time Out
Procedure
VCU 000639.12 — CAN, Lost Message
VCU 000639.14 — CAN, Bus Off
VCU 000677.03 — Starter Relay
Diagnosis
VCU 000677.04 — Starter Relay
Diagnosis
VCU 000677.14 — Crank Time Exceeded
VCU 000677.31 — Starter Cool Down in Process
VCU 000920.04 — Buzzer Short to Low
Diagnostics
VCU 000920.03 — Buzzer Short to High
Diagnostics
VCU 000976.14 — PTO Switch
Diagnostics
VCU 001638.00 — Hydraulic Oil
Electrical Diagnostics
VCU 001713.00 — Hydraulic Filter
Diagnostics
VCU 001713.03 — Hydraulic Filter Restriction
Diagnostics
VCU 001713.31 — Hydraulic Filter Restriction
Diagnostics
VCU 516124.03 — Engine Run Request
Procedure
VCU 516124.04 — Engine Run Request
Procedure
VCU 516125.03 — Fuel Solenoid Pull-In Relay
Procedure
VCU 516125.04 — Fuel Solenoid Pull-In Relay
Procedure
VCU 516135.03 — Air Preheat, Non-T4
Procedure
VCU 516135.04 — Air Preheat, Non-T4
Procedure
VCU 516183.02 — Proximity Sensor #2
Diagnostics
VCU 516183.07 — Proximity Sensor #2
Diagnostics
VCU 516183.04 — Proximity Sensor #2
Diagnostics
VCU 516184.02 — Proximity Sensor #1
Diagnostics
VCU 516184.07 — Proximity Sensor #1
Diagnostics
VCU 516184.04 — Proximity Sensor #1
Diagnostics
VCU 516199.03 — Raise-Lower Select Solenoid
Procedure
VCU 516199.04 — Raise-Lower Select Solenoid
Procedure
VCU 516207.03 — 48 Volt Alternator Relay Driver
Procedure
VCU 516207.04 — 48 Volt Alternator Relay Driver
Procedure
VCU 516708.00 — Hydraulic Oil Leak
VCU 520608.14 — Backlap
VCU 520871.31 — Non Critical Data Check Sum Fail
Procedure
VCU 520872.31 — Critical Data Check Sum Fail
Procedure
VCU 520873.31 — Vehicle Hours Data Check Sum Fail
Procedure
VCU 520874.31 — App EOL Configuration Mismatch
Procedure
VCU 520957.03 — Park Brake Solenoid
Procedure
VCU 520957.04 — Park Brake Solenoid
Procedure
VCU 521426.31 — Lower Reel Switch Signal Invalid
Procedure
VCU 521427.31 — Raise Reel Switch Invalid Signal
Procedure
VCU 522011.08 — CAN Display Heartbeat
Diagnostics
VCU 522405.03 — Park Brake Pressure Switch
Diagnostics
VCU 522405.04 — Park Brake Pressure Switch
Diagnostics
VCU 522405.31 — Park Brake Pressure Switch
Diagnostics
VCU 522771.31 — VCU Connected to Unknown Address
Diagnostics
VCU 523652.31 — VCU Connected to Unknown Controller
Diagnostics
VCU 523324.02 — Swash Plate Position Sensor
Diagnostics
VCU 523324.03 — Swash Plate Position Sensor
Diagnostics
VCU 523324.04 — Swash Plate Position Sensor
Diagnostics
VCU 523324.10 — Swash Plate Position Sensor
Diagnostics
VCU 523324.13 — Swash Plate Position Sensor
Diagnostics
VCU 523324.16 — Swash Plate Position Sensor
Diagnostics
VCU 523324.18 — Swash Plate Position Sensor
Diagnostics
VCU 523590.03 — Forward Pedal Sensor
Procedure
VCU 523590.04 — Forward Pedal Sensor
Procedure
VCU 523590.08 — Forward Pedal Sensor
Procedure
VCU 523590.13 — Forward Pedal Sensor
Procedure
VCU 523590.14 — Forward Pedal Sensor
VCU 523590.16 — Forward Pedal Sensor
Procedure
VCU 523590.18 — Forward Pedal Sensor
Procedure
VCU 523590.31 — Forward Pedal Sensor
Procedure
VCU 523591.03 — Reverse Pedal Sensor
Procedure
VCU 523591.04 — Reverse Pedal Sensor
Procedure
VCU 523591.08 — Reverse Pedal Sensor
Procedure
VCU 523591.13 — Reverse Pedal Sensor
Procedure
VCU 523591.14 — Reverse Pedal Sensor
VCU 523591.16 — Reverse Pedal Sensor
Procedure
VCU 523591.18 — Reverse Pedal Sensor
Procedure
VCU 523591.31 — Reverse Pedal Sensor
Procedure
VCU 523735.03 — eHydro FWD/REV Solenoid
Diagnostics
VCU 523735.04 — eHydro FWD/REV Solenoid
Diagnostics
System Diagnostic Access
Engine System Diagnostics — 3TNV84T
Engine Systems — 3TNV84T
Engine System Diagnostics — 3TNV86T
Engine Systems — 3TNV86T
Electrical System Diagnostics
Electrical Systems
Electrical Control Unit Diagnostics
Electrical Control Units
Drivetrain System Diagnostics
Drivetrain Systems
Steering and Brakes System Diagnostics
Steering and Brake Systems
Hydraulic System Diagnostics
Hydraulic Systems
Attachment and Machine-Specific Diagnostics
Attachment and Machine-Specific Systems
Engine System Diagnostics — 3TNV84T
General Information
Specifications
Theory of Operation
Cooling System Operation
Fuel and Air System Operation
Lubrication System Operation
Tests and Adjustments
Adjust Low Idle
Adjust Throttle Cable
Adjust Valve Clearance
Adjust Valve Clearance—Obstructed Timing Marks
Bleed Fuel System
Check Connecting Rod Side Play
Check Connecting Rod Bearing Clearance
Check Crankshaft End Play
Check Crankshaft Main Bearing Clearance
Check Camshaft End Play
Check Timing Gear Backlash
Check Turbocharger Rotor Shaft Axial Play
Check Turbocharger Rotor Shaft Radial Play
Check Valve Lift
Extending Turbocharger Life
Fuel Transfer Pump Flow Test
Fuel Transfer Pump Pressure Test
Injection Pump Static Timing
Test and Adjust 12 Volt Alternator and Cooling Fan Drive Belt Tension
Test and Adjust 48 Volt Alternator and Coolant Pump Drive Belt Tension
Test Cooling System Pressure
Test Coolant Temperature Switch
Test Cylinder Compression
Test Cylinder Leakdown
Test Engine Coolant Temperature Sensor
Test Engine Oil Pressure
Test Fuel Injection Nozzles
Test Fuel System Leakage
Test Radiator Cap Pressure
Test Thermostat Opening
Turbocharger Seven-Step Inspection
Turbocharger Waste Gate Test
Diagnostics
Coolant in Crankcase
Procedure
Engine Is Overheating
Procedure
Engine Runs Rough
Misfiring
Uneven Combustion Sound
Engine Surges DURING IDLING
Engine Surges UNDER LOAD
Excessive Engine Vibration
Engine Starts But Does Not Continue Running
No Exhaust Smoke
Excess Exhaust Smoke
Engine Will Not Start
Procedure
Excessive Fuel Consumption
Procedure
Excessive Oil Consumption
Procedure
Exhaust Color BLACK Under Load
Procedure
Exhaust Color WHITE Under Load
Procedure
Exhaust Temperature Too High
Procedure
Fuel Oil in Crankcase
Procedure
Low Compression
Procedure
Low Engine Coolant Temperature
Procedure
Low Engine Output
Exhaust Color NORMAL
Exhaust Color WHITE
Exhaust Color BLACK
Low Oil Pressure
Procedure
Engine System Diagnostics — 3TNV86CT
General Information
Aftertreatment Verification Procedure
DPF Ash Cleaning Required
DPF Elevated Exhaust Temperature
DPF Filter Cleaning Required
DPF Parked Cleaning Required (Stop Level)
DPF Parked Cleaning Required (Warning Level)
DPF Parked Regeneration
DPF Recovery Regeneration
DPF Regeneration Control
DPF Self Regeneration — Mode Select
Engine Information
Exhaust Filter System Overview
Understanding Diesel Particulate Filter (DPF) Regeneration
Electrical System Diagnostics
General Information
Problem Not Found Procedure
Diagnostic Procedure
Theory of Operation
Air Preheater Circuit, Non-T4 (E-Cut ™ Hybrid)
Charging Circuit
Cranking Circuit, T4
Cranking Circuit, Non-T4 (E-Cut ™ Hybrid)
Cruise Control Circuit
Engine Oil Pressure Circuit, Non-T4
Engine Oil Pressure Circuit, T4
Engine & Hydraulic Temperature Circuit, Non-T4
Engine & Hydraulic Temperature Circuit, T4
Glow Plug Circuit, T4
Lift-Lower-Mow Circuit
Power Circuit, Non-T4 (E-Cut ™ Hybrid)
Power Circuit, T4
Theory Of Operation Information
Traction Drive Circuit
Schematics
Load Center, Non-T4
Load Center, T4
Main Wiring Schematic — 7500A E-Cut — Non T4
Main Wiring Schematic — 7500A E-Cut & 8000A E-Cut — T4
Tests and Adjustments
48V Alternator Current Output Test
48V Alternator Voltage Output Test
48 Volt Alternator Circuit Diagnosis
Air Pre-Heater Test
Battery Charge
Battery Load Test
Battery Voltage and Specific Gravity Tests
Brake Valve, Lift Valve Solenoid Test
CAN Bus Terminator Test
CAN Communication Fault Checks
CAN Message Not Received
CAN Message Received Error
CAN Message Received Is Incorrect
CAN Network Voltage Checks
CAN Resistor Test
Common Circuit Tests
Diode Test
Electronic Injector — Calibration Information
Engine Oil Pressure Switch Test
Fuel Pump Test
Fuel Shutoff Solenoid Test
Fuse Test
Glow Plug Test
Ground Circuit Test
Key Switch Test
Key Switch Test (TCA24615)
Park Brake Switch Test
Proximity Switch Test
PTO Switch Test
R-1 Resistor Test
Reel Motor Phase Wire Test
Reel Motor Test
Regulated Voltage Output Test
Relay Test
Seat Switch Test
Short to Voltage Procedure
Diagnostic Procedure
Terminal Test
Test Hydraulic Filter Restriction Switch
Test Hydraulic Temperature Switch
Test Raise/Lower Switch
Warning Alarm Test
Wiggle Test
Diagnostics
Charging Circuit Diagnostics
Cranking Circuit Diagnostics, Non—T4
Cranking Circuit Diagnostics, T4
Cruise Control Circuit Diagnostics
Engine & Hydraulic Temperature Circuit Diagnostics
Engine Oil Pressure Circuit Diagnostics
Forward Drive Circuit Diagnostics
Lift-Lower-Mow Circuit Diagnostics (E-Cut ™ Hybrid)
Preheater Circuit Diagnostics
Reverse Drive Circuit Diagnostics
Electrical Control Unit Diagnostics
General Information
Accessing Diagnostic Trouble Codes
Accessing DTCs through PDU
Alarm
Approved Software for Control Units
CAN Bus Operation
CAN Trace
Data Bus Systems
Display Navigation
PDU
Stored Diagnostic Trouble Codes (DTCs)
Troubleshooting Electronic Controllers
Verification Procedure
Procedure
Warning Icons
Theory of Operation
Control Unit ECU — Programming
Hour Meter
Primary Display Unit—PDU
Reel Motors
Reel Motor Controllers
Reel Motor Controller Signals
Reel Motor Safety Interlock Operating Conditions
Reprogramming Control Units
VCU Pinout, Non—T4
VCU Pinout, T4
Tests and Adjustments
Erroneous Diagnostic Trouble Codes
Hydrostatic Transmission Calibration
Hydrostatic Valve Calibration
Pass Code – Change
Pass Code – Reset
Pedal Calibration
Hydrostatic Transmission Calibration Procedure
Hydrostatic Valve Calibration Procedure
Diagnostics
VCU — Diagnostic Addresses
Electrical Connectors
General Information
Summary of References
Electrical Assembly Connectors
A5501 Engine Control Unit (ECU) Connector, 60 Pin
A5502 Engine Control Unit (ECU) Connector, 94 Pin
C-3 Power Port Connector
C-10 Command Arm to Main Harness Connector (Yellow)
C-11 Command Arm to Main Harness Connector (Red)
C-16 Primary Display Unit (PDU) Connector
CAN-C1 Reel Motor Controller Connector (E-Cut ™ Hybrid)
CAN-C2 Reel Motor Controller Connector (E-Cut ™ Hybrid)
CAN-C3 Reel Motor Controller Connector (E-Cut ™ Hybrid)
CAN-C4 Reel Motor Controller Connector (E-Cut ™ Hybrid)
CAN-C5 Reel Motor Controller Connector (E-Cut ™ Hybrid)
MC-12 Main Harness to Command Arm Connector (Red)
MC-13 Main Harness to Command Arm Connector (Yellow)
MC-23 Vehicle Control Unit (VCU) Connector
MC-37 MTG Telematics Connector
MC-55 Kit Switched Power Connector
MC-60 Diagnostic Connector
MFB-1 Load Center Connector
X5057 Main Harness to Engine Connector, 8-pin (Red)
X5058 Main Harness to Engine Connector (Red)
X5059 Main Harness to Engine Connector (Gray)
X5060 Main Harness to Engine Connector (Yellow)
XC0070 MTG Harness to Main Wiring Harness Interconnect
XH0001 Telematics Wifi GPS CAN Module
Y-1 Brake Solenoid Adaptor Harness to Main Wiring Harness Interconnect
Y-3 Brake Pressure Sensor Adaptor Harness to Main Wiring Harness Interconnect
Light Connectors
MC-1 Work Light Connector
MC-2 Work Light Connector
MC-3 Work Light Connector
Fuse Connectors
FB-01 Telematics Fuse Block Connector (main wiring harness)
XA0001 Telematics Fuse Block Connector (MTG wiring harness)
Motor Connectors
MC-14 Seat Suspension Compressor Connector
MC-27 Fuel Transfer Pump Connector
Switch Connectors
C-2 Key Switch Connector
C-4 Raise/Lower Lever Connector
C-14A Light Switch Connector
C-24 PTO Switch Connector
C-25 Park Brake Switch Connector
MC-10 Seat Switch Connector
MC-25 Brake Pressure Switch Connector
MC-28 Hydraulic Filter Restriction Switch Connector
Solenoid Connectors
C-5 Alarm Connector
MC-4 Starter Solenoid Connector
MC-20 Rear Mow Valve Connector
MC-21 Front Raise/Lower Valve Connector
MC-22 Rear Raise/Lower Valve Connector
MC-24 Brake Solenoid Connector
MC-26 Fuel Solenoid Connector
MC-32 Forward Hydraulic Solenoid Connector
MC-33 Reverse Hydraulic Solenoid Connector
MC-52 Reverse 4WD Solenoid Valve #1 Connector
MC-53 Reverse 4WD Solenoid Valve #2 Connector
MC-64 Raise Select Valve Connector
Y-2 Brake Solenoid Connector (sensor adaptor harness)
Sensor Connectors
B-1 Brake Pressure Sensor Connector (sensor adaptor harness)
B5109 DPF Pressure Sensor Connector
B5201 DOC Inlet Temperature Sensor Connector
B5202 DOC Outlet Temperature Sensor Connector
MC-9 RH Lift Arm Position Sensor Connector
MC-11 LH Lift Arm Position Sensor Connector
MC-16 Crankshaft Speed Pickup Connector
MC-34 Swashplate Angle Sensor Connector
MC-35 Fuel Level Sensor Connector
MC-61 Forward Pedal Sensor Connector
MC-62 Reverse Pedal Sensor Connector
MC-63 Hydraulic Oil Temperature Switch Connector
Resistor Connectors
MC-7 Connector, 120 ohm Resistor
MC-8 Connector, 120 ohm Resistor
R-1 Buzzer Resister Connector, 1000 Ohm
Diode Connectors
V-1 Fuel Solenoid Diode Connector — Non T4
V-1 Reverse 4WD Solenoid Diode Connector — T4
Drivetrain System Diagnostics
Theory of Operation
Hydrostatic Transmission
Component Location
Driveline Components
Hydrostatic Assembly Components
Hydrostatic End Cover and Charge Pump Adapter Components
Hydrostatic Power Train—7500A
Hydrostatic Power Train—8000A
Tests and Adjustments
Test Charge Pressure
Test Hydrostatic System Relief Pressure
Test Port Location
Diagnostics
Diagnose Hydrostatic System Operating Hot
Hydrostatic System Operating Hot
Diagnose Mower Will Not Move in Forward or Reverse
Mower Will Not Move in Forward or Reverse
Diagnose Mower Will Not Reach Full Speed
Mower Will Not Reach Full Speed
Diagnose Sluggish Response to Acceleration or Deceleration
Sluggish Response to Acceleration or Deceleration
Diagnose Noisy Pump
Noisy Pump
Power Train Troubleshooting Hints
Steering and Brake System Diagnostics
Theory of Operation
Brake Operation
Component Location
Steering Components—7500A
Steering Components—8000A
Tests and Adjustments
Adjust Steering Toe-In
Test Steering Control Unit (SCU) Leakage
Test Steering System Leakage
Test Steering System Relief Pressure
Diagnostics
Diagnose Excessive Steering Wheel Free Play
Excessive Steering Wheel Free Play
Diagnose High Steering Effort in Both Directions
High Steering Effort in Both Directions
Diagnose High Steering Effort in One Direction
High Steering Effort in One Direction
Diagnose Sluggish Steering Response
Sluggish Steering Response
Diagnose Steering Cylinder Will Not Fully Extend or Retract
Steering Cylinder Will Not Fully Extend or Retract
Diagnose Steering Shimmy
Steering Shimmy
Diagnose Steering Wanders
Steering Wanders
Hydraulics System Diagnostics
Theory of Operation
Lift System
Hydraulic Schematics
Main Hydraulic Schematic, 7500A E-Cut
Main Hydraulic Schematic, 8000A E-Cut
Component Location
Hydraulic System Component Location
Tests and Adjustments
Bleed Hydraulic System
Test Lift Pump Flow
Test Lift System Leakage
Test Lift System Relief Pressure
Test Steering—Charge Pump Flow
Warm Up Hydraulic Oil
Diagnostics
Diagnose Lift System
Front and Rear Lift Arms Will Not Rise
Front and Rear Lift Arms Will Not Lower
Front and Rear Lift Arms Will Not Stay in Raised Position
Attachment and Machine-Specific Diagnostics
Theory of Operation
Performance Variables
Reel and Bed Knife Grinding
Rollers
Vertical Cutting Unit
Component Location
Cutting Unit – QA5 Component Location
Greens Tender Conditioner (GTC) Component Location
Verticut QA5 Component Location
Tests and Adjustments
Adjust Backlapping and Bed Knife-to-Reel
Adjust Bed Knife-to-Reel
Adjust Cutting Shield
Align Cutting Unit Frame – QA5 Reel
Adjust Depth-of-Cut – Vertical Cutting Units
Adjust Front Roller – QA5 Reel
Adjust Height-of-Cut (HOC) – QA5 Reel
Adjust Height-of-Cut Range – QA5 Reel
Adjust Lift Arm Cylinder
Adjust Power Brush
Adjust Proximity Flag
Adjusting Greens Tender Conditioner (GTC)
Backlapping Procedure
Grinding Reel and Bed Knife
Diagnostics
Diagnose Height-of-Cut (HOC) Changes
Diagnose Height-of-Cut (HOC) Changes
Diagnose Marcelling
Diagnose Marcelling
Diagnose Poor Quality of Cut
Diagnose Poor Quality of Cut
Diagnose Reel Does Not Rotate
Diagnose Reel Does Not Rotate
Diagnose Streaking
Diagnose Streaking
Diagnose Unit Not Cutting
Diagnose Unit Not Cutting
Service Tools
Tools and Kits
Essential or Required Tools
Recommended Tools
Service Equipment and Tools