John Deere 644K 4WD Loader Index:

• Contents
  • Safety—Safety and Operator Conveniences
    • Safety and Operator Convenience Features
  • Safety—General Precautions
    • Recognize Safety Information
    • Follow Safety Instructions
    • Operate Only If Qualified
    • Wear Protective Equipment
    • Avoid Unauthorized Machine Modifications
    • Inspect Machine
    • Stay Clear of Moving Parts
    • Avoid High-Pressure Fluids
    • Avoid High-Pressure Oils
    • Work In Ventilated Area
    • Prevent Fires
    • Clean Debris from Machine
    • Prevent Battery Explosions
    • Handle Chemical Products Safely
    • Dispose of Waste Properly
    • Exhaust Filter Ash Handling and Disposal
    • Prepare for Emergencies
    • Add Cab Guarding for Special Uses
  • Safety—Operating Precautions
    • Use Steps and Handholds Correctly
    • Start Only From Operator’s Seat
    • Use and Maintain Seat Belt
    • Prevent Unintended Machine Movement
    • Avoid Work Site Hazards
    • Use Special Care When Operating Loader
    • Keep Riders Off Machine
    • Avoid Backover Accidents
    • Avoid Machine Tip Over
    • Operating on Slopes
    • Operating or Traveling On Public Roads
    • Inspect and Maintain ROPS
    • Add and Operate Attachments Safely
  • Safety—Maintenance Precautions
    • Park and Prepare for Service Safely
    • Clean Exhaust Filter Safely
    • Service Cooling System Safely
    • Service Tires Safely
    • Remove Paint Before Welding or Heating
    • Make Welding Repairs Safely
    • Drive Metal Pins Safely
  • Safety—Safety Signs
    • Safety Signs
  • Operation—Operator’s Station
    • Levers—Two Function Hydraulic Control
    • Levers—Three Function Hydraulic Control
    • Levers—Four Function Hydraulic Control
    • Levers—Joystick Steering Control
    • Pedals
    • Sealed Switch Module (SSM)
    • Switch Module Functions
    • Advanced Display Unit (ADU)
    • Display Unit Functions
    • Display Unit—Normal Display
    • Display Unit—Main Menu
    • Display Unit—Main Menu—Codes
    • Display Unit—Main Menu—Codes—Active Codes
    • Display Unit—Main Menu—Codes—Stored Codes
    • Display Unit—Main Menu—Settings
    • Display Unit—Main Menu—Settings—Reverse Fan Cycle
    • Display Unit—Main Menu—Settings—Courtesy Lights
    • Display Unit—Main Menu—Settings—Quick Shift
    • Display Unit—Main Menu—Settings—Job Timer
    • Display Unit—Main Menu—Settings—Stopwatch
    • Display Unit—Main Menu—Settings—Ride Control—If Equipped
    • Display Unit—Main Menu—Settings—Counters
    • Display Unit—Main Menu—Settings—Camera Mode
    • Display Unit—Main Menu—Settings—Operator Configuration
    • Display Unit—Main Menu—Diagnostics
    • Display Unit—Main Menu—Diagnostics—Machine ID
    • Display Unit—Main Menu—Diagnostics—Battery Monitor
    • Display Unit—Main Menu—Diagnostics—Engine Sensors
    • Display Unit—Main Menu—Diagnostics—Transmission/Axle
    • Display Unit—Main Menu—Diagnostics—Hydraulic Sensors
    • Display Unit—Main Menu—Diagnostics—Machine Sensors
    • Display Unit—Main Menu—Diagnostics—FNR Selector
    • Display Unit—Main Menu—Diagnostics—Cab Switches
    • Display Unit—Main Menu—Diagnostics—Switch Module
    • Display Unit—Main Menu—Diagnostics—Joystick Steering—If Equipped
    • Display Unit—Main Menu—Diagnostics—Tire Pressure—If Equipped
    • Display Unit—Main Menu—Diagnostics—Object Detect—If Equipped
    • Display Unit—Main Menu—Diagnostics—Auto Diff Lock—If Equipped
    • Display Unit—Main Menu—Diagnostics—Payload Scale—If Equipped
    • Display Unit—Main Menu—Diagnostics—JDLink™ System Info
    • Display Unit—Main Menu—Diagnostics—Park Brake Test
    • Display Unit—Main Menu—Payload Scale—If Equipped
    • Display Unit—Main Menu—Payload Scale—Long Total
    • Display Unit—Main Menu—Payload Scale—Display Units
    • Display Unit—Main Menu—Payload Scale—Auto Add
    • Display Unit—Main Menu—Payload Scale—Diagnostics
    • Display Unit—Main Menu—Payload Scale—Setup
    • Display Unit—Main Menu—Security
    • Display Unit—Main Menu—Security—Security
    • Display Unit—Main Menu—Security—Change Owner PIN
    • Display Unit—Main Menu—Security—Manage Operator PINs
    • Display Unit—Main Menu—Security—Manage Transport PIN
    • Display Unit—Main Menu—Security—Delayed Operator Logout
    • Display Unit—Main Menu—Exhaust Filter
    • Display Unit—Main Menu—Exhaust Filter—Auto Cleaning
    • Display Unit—Main Menu—Exhaust Filter—Parked Cleaning
    • Display Unit—Main Menu—Software Delivery
    • Display Unit—Main Menu—Software Delivery—Software Update
    • Horn Button
    • Turn Signals
    • Neutral Lock
    • Joystick Steering Armrest Adjustment— if Equipped
    • Air Conditioner and Heater Operation
    • Counter Switch
    • Opening and Securing Side Door
    • Opening Side Window/Secondary Exit
    • Opening Rear Side Window
    • Seat Adjustment
    • Fire Extinguisher Mounting Location
  • Operation—Operating the Machine
    • Before Starting Work
    • Inspect Machine Daily Before Starting
    • Check Instruments Before Starting
    • Security System
    • Battery Disconnect Switch
    • Engine Break-In Period
    • Starting the Engine
    • Engine Block Heater—If Equipped
    • Starting Fluid (Cold Weather Starting Aid)—If Equipped
    • Warmup
    • Cold Weather Warmup
    • Park Brake Switch
    • Shifting the Transmission
    • Automatic Idle and Automatic Shutdown
    • Joystick Bucket and Boom Control
    • Two Lever Bucket and Boom Control
    • Auxiliary Control
    • Joystick Steering Control—If Equipped
    • Ride Control—If Equipped
    • Secondary Steering—If Equipped
    • Differential Lock Operation
    • Exhaust Filter
    • Service ADVISOR™ Remote (SAR) Software Delivery Process
    • Rear Camera and Radar Object Detection (ROD) System—If Equipped
    • Counter Switch Operation
    • Embedded Payload Scale—If Equipped
    • Boom Height Kickout Adjustment
    • Return-to-Carry Kickout Adjustment
    • Return-to-Dig Adjustment for Z-Bar Linkage
    • Return-to-Dig Adjustment for Powerllel™ Linkage—If Equipped
    • Operating Loader Coupler—If Equipped
    • Using the Loader Bucket
    • Backdragging
    • Fork Attachment
    • Parking the Machine
    • Loading Machine on a Trailer
    • Towing Procedure
    • Lifting the Machine
  • Maintenance—Machine
    • Diesel Fuel
    • Diesel Fuel Specifications
    • Lubricity of Diesel Fuel
    • Handling and Storing Diesel Fuel
    • Biodiesel Fuel
    • Testing Diesel Fuel
    • Minimizing the Effect of Cold Weather on Diesel Engines
    • Alternative and Synthetic Lubricants
    • Mixing of Lubricants
    • Lubricant Storage
    • John Deere Break-In Plus™ Engine Oil
    • Diesel Engine Oil—Interim Tier 4 and Stage III B Engines
    • Engine Oil and Filter Service Intervals—Interim Tier 4 and Stage III B Engines
    • Transmission, Park Brake, and Axle Oil
    • Hydraulic System Oil
    • Grease
    • Heavy Duty Diesel Engine Coolant
    • Drain Intervals for Diesel Engine Coolant
    • John Deere COOL-GARD™ II Coolant Extender
    • Supplemental Coolant Additives
    • Operating in Warm Temperature Climates
    • Additional Information About Diesel Engine Coolants and John Deere COOL-GARD™ II Coolant Extender
    • Testing Diesel Engine Coolant
    • Disposing of Coolant
  • Maintenance—Periodic Maintenance
    • Service Machine at Specified Intervals
    • Check Hour Meter Regularly
    • Prepare Machine for Maintenance
    • Frame Locking Bar
    • Boom Lock
    • Pin Removal—If Equipped With Powerllel™ Linkage
    • Engine Service Doors and Side Shields
    • Cooling System Doors
    • Fuel Tank
    • Fluid Analysis Program Test Kits and 3-Way Coolant Test Kit
    • Service Intervals
    • Required Parts
  • Maintenance—As Required
    • Service Exhaust Filter
    • Inspect Tires and Check Pressure
    • Tire Pressures
    • Check Wheel Bolt Torque
    • Inspect Engine Air Cleaner Elements
    • Replace Fast Fill Fuel Breather Filter—If Equipped
    • Inspect Air Conditioner Compressor and Alternator Belt
    • Check Engine Coolant
    • Clean Cooler Cores
    • Check Rear Camera and Radar Object Detection (ROD) System—If Equipped
    • Check Windshield Washer Fluid Level
    • Drain Water From Primary Fuel Filter
    • Check and Clean or Replace Cab Fresh Air Filter
    • Check and Clean or Replace Cab Recirculating Air Filter
  • Maintenance—Every 10 Hours or Daily
    • Clean Air Cleaner Dust Unloader Valve
    • Check Coolant Level in Surge Tank
    • Check Engine Oil Level
    • Check Hydraulic System Oil Level
    • Check Transmission Oil Level
    • Inspect Outer Pin Seals
  • Maintenance—Every 100 Hours
    • Lubricate Loader Linkage and Cylinder Pivots—Z-Bar Linkage
    • Lubricate Loader Linkage and Cylinder Pivots—Powerllel™ Linkage
  • Maintenance—Initial Service – 250 Hours
    • Drain and Refill Front and Rear Axle Oil
    • Replace Axle Oil Filters—If Equipped
  • Maintenance—Every 250 Hours
    • Take Engine Oil Sample
  • Maintenance—Every 500 Hours
    • Lubricate Driveline Upper and Lower Sliding Joints and Lower U-Joints
    • Check Front and Rear Axle Oil Level
    • Lubricate Front and Rear Axle Shaft Seals
    • Check Battery Water Level and Terminals
    • Check Air Intake Hoses and Charge Air Cooler Tube Couplings
    • Replace Fast Fill Fuel Breather Filter—If Equipped
    • Take Fluid Samples
    • Drain and Refill Engine Oil and Replace Filter
    • Replace In-Line Fuel Strainer
    • Replace Primary Fuel Filter
    • Replace Final Fuel Filter
    • Replace Hydraulic Reservoir Breather Filter
    • Check Park Brake Oil Level
    • Lubricate Front and Rear Shaft Seals on Park Brake
    • Check Ride Control Accumulator—If Equipped
  • Maintenance—Every 1000 Hours
    • Clean Hydraulic Fan Drive Case Drain In-Line Screen
    • Replace Air Cleaner Dust Unloader Valve
    • Replace Engine Air Cleaner Elements
    • Check Coolant
    • Replace Fuel Tank Breather Filter
    • Replace Axle Oil Filters—If Equipped
    • Lubricate Frame Hinge Pivots
    • Drain and Refill Park Brake Oil
  • Maintenance—Every 2000 Hours
    • Replace Outer Pin Seals
    • Drain and Refill Transmission Oil and Replace Filter
    • Drain and Refill Front and Rear Axle Oil
    • Clean Front and Rear Axle Oil Recirculation Screens—If Equipped
    • Adjust Engine Valve Lash (Clearance)
    • Rerun Transmission Clutch Calibration
  • Maintenance—Every 4000 Hours
    • Clean Hydraulic Pump Case Drain In-Line Screen
    • Replace Hydraulic System Return Filter
    • Drain, Flush, and Refill Hydraulic System Oil
    • Clean Hydraulic System Fill Strainer
  • Maintenance—Every 5000 Hours
    • Check Driveline Damper For Cracks
  • Maintenance—Every 6000 Hours
    • Drain Cooling System
    • Refill Cooling System
  • Miscellaneous—Machine
    • Tire Removal With Tire Pressure Monitor (TPM) System—If Equipped
    • Check Air Inlet Cover
    • Bleed Fuel System
    • Do Not Service Control Valves, Cylinders, Pumps, or Motors
    • Precautions for Alternator and Regulator
    • Handling, Checking, and Servicing Batteries Carefully
    • Using Booster Batteries—24-Volt System
    • Using Battery Charger
    • Replacement Batteries
    • Remove and Install Batteries
    • 12-Volt Auxiliary Power Outlet—If Equipped
    • JDLink™ Machine Monitoring System (MMS)—If Equipped
    • Replacing Fuses
    • Remove and Install Halogen Bulbs
    • Fluid Sampling Test Ports—If Equipped
    • Air Conditioning System Service
    • External Service Brake Inspection
    • Bleeding Brakes
    • Service Recommendations For Snap-To-Connect (STC®) Fittings
    • Welding On Machine
    • Welding Near Electronic Control Units
    • Keep Electronic Control Unit Connectors Clean
    • Keep ROPS Installed Properly
    • Hardware Torque Specifications
    • Metric Bolt and Screw Torque Values
    • Unified Inch Bolt and Screw Torque Values
  • Miscellaneous—Operational Checkout
    • Operational Checkout
  • Miscellaneous—Troubleshooting
    • Troubleshooting Procedure
    • Engine
    • Transmission
    • Differential and Axle
    • Service Brake
    • Driveline
    • Park Brake
    • Hydraulic System
    • Steering
    • Air Conditioning System
    • Heater System
    • Software Update
  • Miscellaneous—Storage
    • Prepare Machine for Storage
    • Monthly Storage Procedure
  • Miscellaneous—Machine Numbers
    • Record Product Identification Number (PIN)
    • Record Engine Serial Number
    • Record Transmission Serial Number
    • Record Hydraulic Pump Serial Number
    • Record Front and Rear Axle Housing Serial Numbers
    • Keep Proof of Ownership
    • Keep Machines Secure
  • Miscellaneous—Specifications
    • Engine Specifications
    • Drain and Refill Capacities
    • Standard Z-Bar Specifications
    • High Lift Z-Bar Specifications
    • Powerllel™ Specifications
    • Travel Speeds
• Page Number
  • Section 1-1
  • Section 1-2
  • Section 1-3
  • Section 1-4
  • Section 1-5
  • Section 2-1
  • Section 2-2
  • Section 3-1
  • Section 3-2
  • Section 3-3
  • Section 3-4
  • Section 3-5
  • Section 3-6
  • Section 3-7
  • Section 3-8
  • Section 3-9
  • Section 3-10
  • Section 3-11
  • Section 3-12
  • Section 3-13
  • Section 4-1
  • Section 4-2
  • Section 4-3
  • Section 4-4
  • Section 4-5
  • Section 4-6