John Deere 4650 and 4850 Tractor - Service Manual

This is the complete service manual for the John Deere 4650 and 4850 tractor.

This is the same manual that the dealer repair shops use! It contains hundreds of pictures and diagrams containing all the information you need to repair and troubleshoot your John Deere tractor.

Covers All Years and Serial Numbers - Other websites sell manuals that are incomplete or only cover a specific year of the machine. This manual is guaranteed to be complete and to cover your machine's model year and serial number.

SECTION 10—GENERAL

Group 00—Specifications
Group 05—Predelivery, Delivery and After-Sale Services
Group 10—Tune-up
Group 15—Lubrication

SECTION 15—SEPARATION

Group 05—Front Axle
Group 10—Front-End
Group 15—Front-End and Engine
Group 20—Engine
Group 25—SOUND-GARD® body and Roll-Gard Protective Structure
Group 30—Power Shift Clutch Housing
Group 31—QUAD-RANGE™ Clutch Housing
Group 35—Transmission
Group 40—Final Drives

SECTION 20—ENGINE

Group 05—Acquire Access to Cylinder Head, Valves and Camshaft
Group 10—Acquire Access to Cylinder Block, Liners, Pistons and Rods
Group 15—Acquire Access to Crankshaft, Main Bearings and Flywheel
Group 20—Acquire Access to Lubrication System
Group 25—Remove/Install Cooling System

SECTION 30—FUEL AND AIR SYSTEM

Group 05—Acquire Access to Air Intake System
Group 10—Acquire Access to Diesel Fuel System
Group 15—Speed Control Linkage

SECTION 40—ELECTRICAL

Group 05—Harness Replacement
Group 06—Connector Repair
Group 10—Remove/Install Delco-Remy Charging Circuit
Group 11—John Deere Charging Circuit
Group 15—Starting Circuit Replacement
Group 25—Lighting Circuit Repair
Group 30—INVESTIGATOR II™ Warning System And Digital Tachometer Repair
Group 31—Gauge Cluster Instrumentation Repair
Group 32—Analog Tachometer Repair
Group 35—Accessories Circuits Repair

SECTION 50—POWER TRAIN—QUAD-RANGE TRANSMISSION

Group 05—Remove/Install Clutch Pressure Valve Housing
Group 10—Clutch Oil Pressure Regulating Valve Housing
Group 15—Clutch Operating Piston Housing
Group 20—PERMA CLUTCH™
Group 30—QUAD-RANGE™ Planetary
Group 35—QUAD-RANGE Transmission & Charge Pump
Group 40—Shift Lever Assembly
Group 55—PTO Gear Train
Group 60—Adjust PTO Clutch Rod
Group 65—Differential
Group 70—Remove/Install Differential Lock Valve and Adjust Lock Valve Release Bar
Group 75—Differential Lock Valve
Group 80—Final Drive

SECTION 55—POWER TRAIN—POWER SHIFT TRANSMISSION

Group 05—Remove/Install Traction Clutch Valve Housing
Group 10—Traction Clutch Valve Housing
Group 15—Remove/Install Transmission Control Valve Housing
Group 20—Transmission Control Valves
Group 25—Remove/Install Traction Clutch
Group 30—Traction Clutch and Drive Shafts
Group 35—Input Planetary
Group 40—Reduction Gear Train
Group 45—Output Planetary
Group 50—Speed Selector Assembly
Group 55—Charge Pump Assembly
Group 60—PTO Gear Train with MFWD
Group 61—PTO Gear Train without MFWD
Group 65—Adjust PTO Clutch Rod
Group 70—Differential
Group 75—Remove/Install Differential Lock Valve and Adjust Lock Valve Release Bar
Group 80—Differential Lock Valve
Group 85—Final Drive
Group 95—MFWD Gear Train
Group 100—MFWD Clutch
Group 105—MFWD Axle and Final Drive

SECTION 60—STEERING/BRAKES

Group 05—Remove/Install Power Steering Components
Group 10—Steering Column
Group 15—Metering Pump
Group 20—Steering Vaive
Group 25—Steering Motor
Group 30—Steering Assist Cylinders (MFWD)
Group 35—Remove/Install Brake Valve and Brake Accumulator
Group 40—Brake Valve
Group 45—Brake Accumulator
Group 50—Bleeding Brakes and Testing Brake Accumulator
Group 55—Brake Pistons, Plates and Disks

SECTION 70—HYDRAULICS

Group 05—Remove/Install Main Hydraulic Pump
Group 10—Main Hydraulic Pump
Group 15—Oil Filter Relief Valve Housing (QRT)
Group 20—Return Oil Filter Relief Valve Housing (PST)
Group 25—Remove/Install Attenuator
Group 30—Hydraulic Attenuator
Group 35—Remove/install HYDRACUSHIONED™ Seat Valve
Group 40—Repair Hydra-Cushioned Seat Valve Assembly
Group 45—Pressure Control Valve
Group 50—Remove/Install Rockshaft Components and Lift Assist Cylinders
Group 55—Rockshaft Components
Group 60—Lift Assist Cylinders
Group 65—Draft Sensing Cylinders
Group 70—Hitch Components
Group 75—Remove/Install SCV Coupler and Levers
Group 80—SCV and ISO Coupler
Group 85—Remote Cylinder
Group 90—Hydraiuic Oil Cooler and Thermal Bypass Valve
Group 95—Transmission-Hydraulic System Cleanup Procedure

SECTION 80—MISCELLANEOUS

Group 05—Rear Wheels
Group 10—Front Axle
SECTION 90—OPERATOR STATION
Group 05—Air Conditioning System
Group 06—Air Conditioning System Service
Group 10—Heating System
Group 15—Seat
Group 20—Miscellaneous Components

SECTION 95—MISCELLANEOUS OPTIONS

Group 40—Auxiliary Lighting and Electrical Components
Group 62—Auxiliary Trailer Brake
Group 63—Secondary Brake
Group 80—Minor Options

SECTION 99—SPECIAL TOOLS

Pages: 1374

Years and Serial Numbers: Covers all years and serial numbers

Models: 4650 and 4850

Make: John Deere

Manual Code: TM1354

Manual Type: Service Manual/ Technical Manual/ Workshop Manual

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John Deere 4650 and 4850 Tractor - Service Manual

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