Illustrated Factory Diagnostic and Repair Technical Service Manual for John Deere 2WD or MFWD Tractors Models 4650, 4850

This manual contains high quality images, circuit diagrams, instructions to help you to maintenance, troubleshooting, diagnostic, and repair your truck. This document is printable, without restrictions, contains searchable text.

Language: English
Format: PDF, 1406 pages;

Covered models:
  4650
  4850

This technical manual was formerly TM-1258. The number was changed to TM-1354 when engine information was removed. Some pages still carry the old publication number. For engine information, refer to engine component technical manual CTM-1, 6466 Engines. This machine technical manual covers removal and installation of the engine components. The component manual covers basic repair of engine. For main hydraulic pump repair information, refer to component technical manual, CTM-7, Radial Piston Pumps

Contents:
    SECTION 10GENERAL
        Group 00Specifications
        Group 05Predelivery, Delivery and After-Sale Services
        Group 10Tune-up
        Group 15Lubrication
    SECTION 15SEPARATION
        Group 05Front Axle
        Group 10Front-End
        Group 15Front-End and Engine
        Group 20Engine
        Group 25SOUND-GARD® body and Roll-Gard Protective Structure
        Group 30Power Shift Clutch Housing
        Group 31QUAD-RANGE Clutch Housing
        Group 35Transmission
        Group 40Final Drives
    SECTION 20ENGINE
        Group 05Acquire Access to Cylinder Head, Valves and Camshaft
        Group 10Acquire Access to Cylinder Block, Liners, Pistons and Rods
        Group 15Acquire Access to Crankshaft, Main Bearings and Flywheel
        Group 20Acquire Access to Lubrication System
        Group 25Remove/Install Cooling System
    SECTION 30FUEL AND AIR SYSTEM
        Group 05Acquire Access to Air Intake System
        Group 10Acquire Access to Diesel Fuel System
        Group 15Speed Control Linkage
    SECTION 40ELECTRICAL
        Group 05Harness Replacement
        Group 06Connector Repair
        Group 10Remove/Install Delco-Remy Charging Circuit
        Group 11John Deere Charging Circuit
        Group 15Starting Circuit Replacement
        Group 25Lighting Circuit Repair
        Group 30INVESTIGATOR II Warning System And Digital Tachometer Repair
        Group 31Gauge Cluster Instrumentation Repair
        Group 32Analog Tachometer Repair
        Group 35Accessories Circuits Repair
    SECTION 50POWER TRAINQUAD-RANGE TRANSMISSION
        Group 05Remove/Install Clutch Pressure Valve Housing
        Group 10Clutch Oil Pressure Regulating Valve Housing
        Group 15Clutch Operating Piston Housing
        Group 20PERMA CLUTCH
        Group 30QUAD-RANGE Planetary
        Group 35QUAD-RANGE Transmission & Charge Pump
        Group 40Shift Lever Assembly
        Group 55PTO Gear Train
        Group 60Adjust PTO Clutch Rod
        Group 65Differential
        Group 70Remove/Install Differential Lock Valve and Adjust Lock Valve Release Bar
        Group 75Differential Lock Valve
        Group 80Final Drive
    SECTION 55POWER TRAINPOWER SHIFT TRANSMISSION
        Group 05Remove/Install Traction Clutch Valve Housing
        Group 10Traction Clutch Valve Housing
        Group 15Remove/Install Transmission Control Valve Housing
        Group 20Transmission Control Valves
        Group 25Remove/Install Traction Clutch
        Group 30Traction Clutch and Drive Shafts
        Group 35Input Planetary
        Group 40Reduction Gear Train
        Group 45Output Planetary
        Group 50Speed Selector Assembly
        Group 55Charge Pump Assembly
        Group 60PTO Gear Train with MFWD
        Group 61PTO Gear Train without MFWD
        Group 65Adjust PTO Clutch Rod
        Group 70Differential
        Group 75Remove/Install Differential Lock Valve and Adjust Lock Valve Release Bar
        Group 80Differential Lock Valve
        Group 85Final Drive
        Group 95MFWD Gear Train
        Group 100MFWD Clutch
        Group 105MFWD Axle and Final Drive
    SECTION 60STEERING/BRAKES
        Group 05Remove/Install Power Steering Components
        Group 10Steering Column
        Group 15Metering Pump
        Group 20Steering Valve
        Group 25Steering Motor
        Group 30Steering Assist Cylinders (MFWD)
        Group 35Remove/Install Brake Valve and Brake Accumulator
        Group 40Brake Valve
        Group 45Brake Accumulator
        Group 50Bleeding Brakes and Testing Brake Accumulator
        Group 55Brake Pistons, Plates and Disks
    SECTION 70HYDRAULICS
        Group 05Remove/Install Main Hydraulic Pump
        Group 15Oil Filter Relief Valve Housing (QRT)
        Group 20Return Oil Filter Relief Valve Housing (PST)
        Group 25Remove/Install Attenuator
        Group 30Hydraulic Attenuator
        Group 35Remove/Install HYDRACUSHIONED Seat Valve
        Group 40Repair Hydra-Cushioned Seat Valve Assembly
        Group 45Pressure Control Valve
        Group 50Remove/Install Rockshaft Components and Lift Assist Cylinders
        Group 55Rockshaft Components
        Group 60Lift Assist Cylinders
        Group 65Draft Sensing Cylinders
        Group 70Hitch Components
        Group 75Remove/Install SCV Coupler and Levers
        Group 80SCV and ISO Coupler
        Group 85Remote Cylinder
        Group 90Hydraulic Oil Cooler and Thermal Bypass Valve
        Group 95Transmission-Hydraulic System Cleanup Procedure
    SECTION 80MISCELLANEOUS
        Group 05Rear Wheels
        Group 10Front Axle
    SECTION 90OPERATOR STATION
        Group 05Air Conditioning System
        Group 06Air Conditioning System Service
        Group 10Heating System
        Group 15Seat
        Group 20Miscellaneous Components
    SECTION 95MISCELLANEOUS OPTIONS
        Group 40Auxiliary Lighting and Electrical Components
        Group 62Auxiliary Trailer Brake
        Group 63Secondary Brake
        Group 80Minor Options
    SECTION 99SPECIAL TOOLS