John Deere 644K 4WD Loader Operator’s Manual OMT344174 – PDF DOWNLOAD

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John Deere 644K 4WD Loader Operator’s Manual OMT344174 – PDF DOWNLOAD

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John Deere 644K 4WD Loader Operator’s Manual OMT344174 – PDF DOWNLOAD

Language : English
Pages : 336
Downloadable : Yes
File Type : PDF

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John Deere 644K 4WD Loader Operator’s Manual OMT344174 – PDF DOWNLOAD

• READ THIS MANUAL carefully to learn how to operate and service your machine correctly. Failure to do so could result in personal injury or equipment damage.
• This manual and safety signs on your machine may also be available in other languages. (See your John Deere dealer to order.)
• THIS MANUAL SHOULD BE CONSIDERED a permanent part of your machine and should remain with the machine when you sell it.
• MEASUREMENTS in this manual are given in both metric and customary U.S. unit equivalents. Use only correct replacement parts and fasteners. Metric and inch fasteners may require a specific metric or inch wrench.
• RIGHT-HAND AND LEFT-HAND sides are determined by facing in the direction of forward travel.
• WRITE PRODUCT IDENTIFICATION NUMBERS (P.I.N.) in the Machine Numbers section. Accurately record all the numbers to help in tracing the machine should it be stolen. Your dealer also needs these numbers when you order parts. File the identification numbers in a secure place off the machine.

TABLE OF CONTENTS:

John Deere 644K 4WD Loader Operator’s Manual OMT344174 – PDF DOWNLOAD

Contents..........................................................................................................0
	Safety—Safety and Operator Conveniences.......................................................................0
		Safety and Operator Convenience Features..................................................................0
	Safety—General Precautions....................................................................................0
		Information for European Union Directives and Eurasian Economic Union Technical Regulations Compliance....0
		Recognize Safety Information..............................................................................0
		Follow Safety Instructions................................................................................0
		Operate Only If Qualified.................................................................................0
		Wear Protective Equipment.................................................................................0
		Avoid Unauthorized Machine Modifications..................................................................0
		Inspect Machine...........................................................................................0
		Stay Clear of Moving Parts................................................................................0
		Avoid High-Pressure Fluids................................................................................0
		Avoid High-Pressure Oils..................................................................................0
		Work In Ventilated Area...................................................................................0
		Prevent Fires.............................................................................................0
		Avoid Static Electricity Risk When Refueling..............................................................0
		High Debris Applications..................................................................................0
		Clean Debris from Machine.................................................................................0
		Prevent Battery Explosions................................................................................0
		Handle Chemical Products Safely...........................................................................0
		Handle Starting Fluid Safely..............................................................................0
		Decommissioning — Proper Recycling and Disposal of Fluids and Components..................................0
		Prepare for Emergencies...................................................................................0
		In Case of Machine Fire...................................................................................0
		Add Cab Guarding for Special Uses.........................................................................0
		Do Not Use Starting Fluid.................................................................................0
	Safety—Operating Precautions..................................................................................0
		Use Steps and Handholds Correctly.........................................................................0
		Start Only From Operator's Seat...........................................................................0
		Use and Maintain Seat Belt................................................................................0
		Prevent Unintended Machine Movement.......................................................................0
		Avoid Work Site Hazards...................................................................................0
		Avoid Power Lines.........................................................................................0
		Use Special Care When Operating Loader....................................................................0
		Keep Riders Off Machine...................................................................................0
		Avoid Backover Accidents..................................................................................0
		Avoid Machine Tip Over....................................................................................0
		Operating on Slopes.......................................................................................0
		Operating or Traveling On Public Roads....................................................................0
		Inspect and Maintain ROPS.................................................................................0
		Travel Safely.............................................................................................0
		Prevent Acid Burns........................................................................................0
		Add and Operate Attachments Safely........................................................................0
	Safety—Maintenance Precautions................................................................................0
		Park and Prepare for Service Safely.......................................................................0
		Service Machines Safely...................................................................................0
		Service Cooling System Safely.............................................................................0
		Service Tires Safely......................................................................................0
		Remove Paint Before Welding or Heating....................................................................0
		Make Welding Repairs Safely...............................................................................0
		Drive Metal Pins Safely...................................................................................0
		Use Proper Lifting Equipment..............................................................................0
	Safety—Safety Signs and Other Instructions....................................................................0
		Safety Signs and Other Instructions.......................................................................0
	Operation—Operator’s Station..................................................................................0
		Levers—Two Function Hydraulic Control.....................................................................0
		Levers—Three Function Hydraulic Control...................................................................0
		Levers—Four Function Hydraulic Control....................................................................0
		Levers—Joystick Steering Control..........................................................................0
		Pedals....................................................................................................0
		Sealed Switch Module (SSM)................................................................................0
		Switch Module Functions...................................................................................0
		Advanced Display Unit (ADU)...............................................................................0
		Display Unit Functions....................................................................................0
		Horn Button...............................................................................................0
		Turn Signals..............................................................................................0
		Joystick Steering Armrest Adjustment— if Equipped.........................................................0
		Air Conditioner and Heater Operation......................................................................0
		Counter Switch............................................................................................0
		Opening and Securing Side Door............................................................................0
		Opening Side Window/Secondary Exit........................................................................0
		Opening Rear Side Window..................................................................................0
		Seat Adjustment...........................................................................................0
		Fire Extinguisher Mounting Location.......................................................................0
	Operation—Operating the Machine...............................................................................0
		Before Starting Work......................................................................................0
		Inspect Machine Daily Before Starting.....................................................................0
		Check Instruments Before Starting.........................................................................0
		Security System...........................................................................................0
		Battery Disconnect Switch.................................................................................0
		Engine Break-In Period....................................................................................0
		Starting the Engine.......................................................................................0
		Cold Start Aid—Glow Plug..................................................................................0
		Cold Start Aid—Block Heater—If Equipped...................................................................0
		Warmup....................................................................................................0
		Cold Weather Warmup.......................................................................................0
		Park Brake Switch.........................................................................................0
		Shifting the Transmission.................................................................................0
		Automatic Idle and Automatic Shutdown.....................................................................0
		Joystick Bucket and Boom Control..........................................................................0
		Two Lever Bucket and Boom Control.........................................................................0
		Auxiliary Control.........................................................................................0
		Joystick Steering Control—If Equipped.....................................................................0
		Ride Control—If Equipped..................................................................................0
		Secondary Steering—If Equipped............................................................................0
		Differential Lock Operation...............................................................................0
		Service ADVISOR™ Remote (SAR) Software Delivery Process...................................................0
		Rear Camera and Radar Object Detection (ROD) System—If Equipped...........................................0
		Counter Switch Operation..................................................................................0
		Embedded Payload Scale—If Equipped........................................................................0
		Boom Height Kickout Adjustment............................................................................0
		Return-to-Carry Kickout Adjustment........................................................................0
		Return-to-Dig Adjustment for Z-Bar Linkage................................................................0
		Return-to-Dig Adjustment for Powerllel™ Linkage—If Equipped...............................................0
		Operating Loader Coupler—If Equipped......................................................................0
		Using the Loader Bucket...................................................................................0
		Backdragging..............................................................................................0
		Fork Attachment...........................................................................................0
		Parking the Machine.......................................................................................0
		Loading Machine on a Trailer..............................................................................0
		Towing Procedure..........................................................................................0
		Lifting the Machine.......................................................................................0
	Operation—Monitor Operation...................................................................................0
		Display Unit—Normal Display...............................................................................0
		Display Unit—Main Menu....................................................................................0
		Display Unit—Main Menu—Codes..............................................................................0
		Display Unit—Main Menu—Codes—Active Codes.................................................................0
		Display Unit—Main Menu—Codes—Stored Codes.................................................................0
		Display Unit—Main Menu—Settings...........................................................................0
		Display Unit—Main Menu—Settings—Reverse Fan Cycle.........................................................0
		Display Unit—Main Menu—Settings—Courtesy Lights...........................................................0
		Display Unit—Main Menu—Settings—Quick Shift...............................................................0
		Display Unit—Main Menu—Settings—Job Timer.................................................................0
		Display Unit—Main Menu—Settings—Stopwatch.................................................................0
		Display Unit—Main Menu—Settings—Ride Control—If Equipped..................................................0
		Display Unit—Main Menu—Settings—Counters..................................................................0
		Display Unit—Main Menu—Settings—Camera Mode...............................................................0
		Display Unit—Main Menu—Settings—Operator Configuration....................................................0
		Display Unit—Main Menu—Settings—Clutch Cutoff.............................................................0
		Display Unit—Main Menu—Diagnostics........................................................................0
		Display Unit—Main Menu—Diagnostics—Machine ID.............................................................0
		Display Unit—Main Menu—Diagnostics—Battery Monitor........................................................0
		Display Unit—Main Menu—Diagnostics—Engine Sensors.........................................................0
		Display Unit—Main Menu—Diagnostics—Transmission/Axle......................................................0
		Display Unit—Main Menu—Diagnostics—Hydraulic Sensors......................................................0
		Display Unit—Main Menu—Diagnostics—Machine Sensors........................................................0
		Display Unit—Main Menu—Diagnostics—FNR Selector...........................................................0
		Display Unit—Main Menu—Diagnostics—Cab Switches...........................................................0
		Display Unit—Main Menu—Diagnostics—Switch Module..........................................................0
		Display Unit—Main Menu—Diagnostics—Joystick Steering—If Equipped..........................................0
		Display Unit—Main Menu—Diagnostics—Tire Pressure—If Equipped..............................................0
		Display Unit—Main Menu—Diagnostics—Object Detect—If Equipped..............................................0
		Display Unit—Main Menu—Diagnostics—Auto Diff Lock—If Equipped.............................................0
		Display Unit—Main Menu—Diagnostics—Payload Scale—If Equipped..............................................0
		Display Unit—Main Menu—Diagnostics—JDLink™ System Info....................................................0
		Display Unit—Main Menu—Diagnostics—Park Brake Test........................................................0
		Display Unit—Main Menu—Payload Scale—If Equipped..........................................................0
		Display Unit—Main Menu—Payload Scale—Long Total...........................................................0
		Display Unit—Main Menu—Payload Scale—Display Units........................................................0
		Display Unit—Main Menu—Payload Scale—Auto Add.............................................................0
		Display Unit—Main Menu—Payload Scale—Diagnostics..........................................................0
		Display Unit—Main Menu—Payload Scale—Setup................................................................0
		Display Unit—Main Menu—Monitor Settings...................................................................0
		Display Unit—Main Menu—Security...........................................................................0
		Display Unit—Main Menu—Security—Security..................................................................0
		Display Unit—Main Menu—Security—Change Owner PIN..........................................................0
		Display Unit—Main Menu—Security—Manage Operator PINs......................................................0
		Display Unit—Main Menu—Security—Manage Transport PIN......................................................0
		Display Unit—Main Menu—Security—Delayed Operator Logout...................................................0
		Display Unit—Main Menu—Software Delivery..................................................................0
		Display Unit—Main Menu—Software Delivery—Software Update..................................................0
	Maintenance—Machine...........................................................................................0
		Required Emission-Related Information.....................................................................0
		Diesel Fuel...............................................................................................0
		Lubricity of Diesel Fuel..................................................................................0
		Handling and Storing Diesel Fuel..........................................................................0
		BioDiesel Fuel............................................................................................0
		Testing Diesel Fuel.......................................................................................0
		Minimizing the Effect of Cold Weather on Diesel Engines...................................................0
		Alternative and Synthetic Lubricants......................................................................0
		Lubricant Storage.........................................................................................0
		Mixing of Lubricants......................................................................................0
		Diesel Engine Break-In™ Oil...............................................................................0
		Diesel Engine Oil—Tier 3 and Stage III A Engines..........................................................0
		Engine Oil and Filter Service Intervals — Tier 3 and Stage IIIA Engines...................................0
		Diesel Engine Oil—Tier 2 and Stage II Engines.............................................................0
		Engine Oil and Filter Service Intervals — Tier 2 and Stage II Engines.....................................0
		Oil Filters...............................................................................................0
		Transmission, Park Brake, and Axle Oil....................................................................0
		Hydraulic Oil.............................................................................................0
		Grease....................................................................................................0
		Diesel Engine Coolant (engine with wet sleeve cylinder liners)............................................0
		Drain Intervals for Diesel Engine Coolant.................................................................0
		John Deere COOL-GARD™ II Coolant Extender.................................................................0
		Supplemental Coolant Additives............................................................................0
		Operating in Warm Temperature Climates....................................................................0
		Additional Information About Diesel Engine Coolants and John Deere COOL-GARD™ II Coolant Extender.........0
		Testing Diesel Engine Coolant.............................................................................0
		Disposing of Coolant......................................................................................0
	Maintenance—Periodic Maintenance..............................................................................0
		Engine Identification.....................................................................................0
		Service Machine at Specified Intervals....................................................................0
		Check Hour Meter Regularly................................................................................0
		Prepare Machine for Maintenance...........................................................................0
		Frame Locking Bar.........................................................................................0
		Boom Lock.................................................................................................0
		Pin Removal—If Equipped With Powerllel™ Linkage...........................................................0
		Engine Service Doors and Side Shields.....................................................................0
		Cooling System Doors......................................................................................0
		Fuel Tank.................................................................................................0
		Fluid Analysis Program Test Kits and 3-Way Coolant Test Kit...............................................0
		Service Intervals.........................................................................................0
		Required Parts............................................................................................0
	Maintenance—As Required.......................................................................................0
		Inspect Tires and Check Pressure..........................................................................0
		Tire Pressures............................................................................................0
		Check Wheel Bolt Torque...................................................................................0
		Inspect Engine Air Cleaner Elements.......................................................................0
		Inspect Air Conditioner Compressor and Alternator Belt....................................................0
		Clean Cooler Cores........................................................................................0
		Check Window Washer Fluid Level...........................................................................0
		Drain Water From Primary Fuel Filter With Water Separator.................................................0
		Drain Water From Final Fuel Filter........................................................................0
		Drain Water From Auxiliary Fuel Filter With Water Separator—If Equipped...................................0
		Check and Clean or Replace Cab Fresh Air Filter...........................................................0
		Check and Clean or Replace Cab Recirculating Air Filter...................................................0
		Check Rear Camera and Radar Object Detection (ROD) System—If Equipped.....................................0
	Maintenance—Every 10 Hours or Daily...........................................................................0
		Clean Air Cleaner Dust Unloader Valve.....................................................................0
		Check Coolant Level at Surge Tank.........................................................................0
		Check Engine Oil Level....................................................................................0
		Check Hydraulic System Oil Level..........................................................................0
		Check Transmission Oil Level..............................................................................0
		Inspect Outer Pin Seals—If Equipped.......................................................................0
	Maintenance—Initial Service—100 Hours.........................................................................0
		Replace Axle Oil Filters..................................................................................0
	Maintenance—Every 100 Hours...................................................................................0
		Lubricate Loader Linkage and Cylinder Pivots—Z-Bar Linkage................................................0
		Lubricate Loader Linkage and Cylinder Pivots—Powerllel™ Linkage...........................................0
	Maintenance—Every 250 Hours...................................................................................0
		Take Engine Oil Sample....................................................................................0
	Maintenance—Every 500 Hours...................................................................................0
		Lubricate Driveline Upper and Lower Sliding Joints and Lower U-Joints.....................................0
		Check Front and Rear Axle Oil Level.......................................................................0
		Lubricate Front and Rear Axle Shaft Seals.................................................................0
		Check Battery Electrolyte Level and Terminals.............................................................0
		Check Air Intake Hoses and Charge Air Cooler Tube Couplings...............................................0
		Replace Fast Fill Fuel Breather Filter—If Equipped........................................................0
		Drain and Refill Engine Oil and Replace Filter............................................................0
		Drain and Refill Engine Oil and Replace Filter (Quick Service)—If Equipped................................0
		Replace Primary Fuel Filter...............................................................................0
		Replace Final Fuel Filter.................................................................................0
		Replace Auxiliary Fuel Filter—If Equipped.................................................................0
		Replace In-Line Fuel Strainer.............................................................................0
		Replace Hydraulic Reservoir Breather Filter...............................................................0
		Check Park Brake Oil Level................................................................................0
		Lubricate Front and Rear Shaft Seals on Park Brake........................................................0
		Take Fluid Samples........................................................................................0
		Check Ride Control Accumulator—If Equipped................................................................0
	Maintenance—Every 1000 Hours..................................................................................0
		Clean Engine Crankcase Vent Tube..........................................................................0
		Replace Air Cleaner Dust Unloader Valve...................................................................0
		Replace Engine Air Cleaner Elements.......................................................................0
		Check Coolant Condition...................................................................................0
		Replace Axle Oil Filters..................................................................................0
		Lubricate Frame Hinge Pivots..............................................................................0
		Drain and Refill Park Brake Oil...........................................................................0
	Maintenance—Every 2000 Hours..................................................................................0
		Replace Outer Pin Seals—If Equipped.......................................................................0
		Drain and Refill Transmission Oil and Replace Filter......................................................0
		Drain and Refill Transmission Oil and Replace Filter (Quick Service)—If Equipped..........................0
		Drain and Refill Front and Rear Axle Oil..................................................................0
		Clean Front and Rear Axle Oil Recirculation Screens—If Equipped...........................................0
		Check and Adjust Engine Valve Lash........................................................................0
		Rerun Transmission Clutch Calibration.....................................................................0
	Maintenance—Every 4000 Hours..................................................................................0
		Replace Crankshaft Damper.................................................................................0
		Clean Hydraulic Pump Case Drain In-Line Screen............................................................0
		Replace Hydraulic System Return Filter....................................................................0
		Drain, Flush, and Refill Hydraulic System Oil.............................................................0
		Drain and Refill Hydraulic System Oil (Quick Service)—If Equipped.........................................0
		Clean Hydraulic System Fill Strainer......................................................................0
	Maintenance—Every 5000 Hours..................................................................................0
		Check Driveline Damper For Cracks.........................................................................0
	Maintenance—Every 6000 Hours..................................................................................0
		Drain Cooling System......................................................................................0
		Refill Cooling System.....................................................................................0
		Drain and Refill Cooling System (Quick Service)—If Equipped...............................................0
	Miscellaneous—Machine.........................................................................................0
		Tire Removal With Tire Pressure Monitor (TPM) System—If Equipped..........................................0
		Check Air Inlet Cover.....................................................................................0
		Inspect Fuel Tank Vent Hose and Breather Filter...........................................................0
		Bleed Fuel System.........................................................................................0
		Do Not Service Control Valves, Cylinders, Pumps, or Motors................................................0
		Precautions for Alternator and Regulator..................................................................0
		Handling, Checking, and Servicing Batteries Carefully.....................................................0
		Using Booster Batteries—24-Volt System....................................................................0
		Using Battery Charger.....................................................................................0
		Replacement Batteries.....................................................................................0
		Remove and Install Batteries..............................................................................0
		12-Volt Auxiliary Power Outlet—If Equipped................................................................0
		JDLink™ Machine Monitoring System (MMS)—If Equipped.......................................................0
		Replacing Fuses...........................................................................................0
		Remove and Install Halogen Bulbs..........................................................................0
		Fluid Sampling Test Ports—If Equipped.....................................................................0
		Air Conditioner System Service............................................................................0
		External Service Brake Inspection.........................................................................0
		Bleeding Brakes...........................................................................................0
		Service Recommendations For Snap-To-Connect (STC®) Fittings...............................................0
		Welding on Machine........................................................................................0
		Welding Near Electronic Control Units.....................................................................0
		Keep Electronic Control Unit Connectors Clean.............................................................0
		Replacing Bucket Teeth—TK Series..........................................................................0
		Keep ROPS Installed Properly..............................................................................0
		Hardware Torque Specifications............................................................................0
		Unified Inch Bolt and Screw Torque Values.................................................................0
		Metric Bolt and Screw Torque Values.......................................................................0
	Miscellaneous—Operational Checkout............................................................................0
		Operational Checkout......................................................................................0
			Diagnostic Trouble Code Check.........................................................................0
			Operational Checks—Ignition OFF, Engine OFF Checks....................................................0
			Operational Checks—Ignition ON, Engine OFF Checks.....................................................0
			Operational Checks—Ignition ON, Engine ON Checks......................................................0
	Miscellaneous—Troubleshooting.................................................................................0
		Troubleshooting Procedure.................................................................................0
		Engine....................................................................................................0
		Transmission..............................................................................................0
		Differential and Axle.....................................................................................0
		Service Brake.............................................................................................0
		Driveline.................................................................................................0
		Park Brake................................................................................................0
		Hydraulic System..........................................................................................0
		Steering..................................................................................................0
		Air Conditioning System...................................................................................0
		Heater System.............................................................................................0
		Software Update...........................................................................................0
	Miscellaneous—Storage.........................................................................................0
		Prepare Machine for Storage...............................................................................0
		Monthly Storage Procedure.................................................................................0
	Miscellaneous—Machine Numbers.................................................................................0
		Record Product Identification Number (PIN)................................................................0
		Record Engine Serial Number...............................................................................0
		Record Transmission Serial Number.........................................................................0
		Record Hydraulic Pump Serial Number.......................................................................0
		Record Front and Rear Axle Housing Serial Numbers.........................................................0
		Keep Proof of Ownership...................................................................................0
		Keep Machines Secure......................................................................................0
	Miscellaneous—Specifications..................................................................................0
		Engine Specifications.....................................................................................0
		Drain and Refill Capacities...............................................................................0
		Standard Z-Bar Specifications.............................................................................0
		High Lift Z-Bar Specifications............................................................................0
		Powerllel™ Specifications.................................................................................0
		Travel Speeds.............................................................................................0
		Eurasian Economic Union...................................................................................0
		Machine Design Life.......................................................................................0
Page Number.......................................................................................................0
	Section 1-1...................................................................................................0
	Section 1-2...................................................................................................0
	Section 1-3...................................................................................................0
	Section 1-4...................................................................................................0
	Section 1-5...................................................................................................0
	Section 2-1...................................................................................................0
	Section 2-2...................................................................................................0
	Section 2-3...................................................................................................0
	Section 3-1...................................................................................................0
	Section 3-2...................................................................................................0
	Section 3-3...................................................................................................0
	Section 3-4...................................................................................................0
	Section 3-5...................................................................................................0
	Section 3-6...................................................................................................0
	Section 3-7...................................................................................................0
	Section 3-8...................................................................................................0
	Section 3-9...................................................................................................0
	Section 3-10..................................................................................................0
	Section 3-11..................................................................................................0
	Section 3-12..................................................................................................0
	Section 3-13..................................................................................................0
	Section 4-1...................................................................................................0
	Section 4-2...................................................................................................0
	Section 4-3...................................................................................................0
	Section 4-4...................................................................................................0
	Section 4-5...................................................................................................0
	Section 4-6...................................................................................................0

S.S 01/03/2025