John Deere 4050, 4250, 4450, 4650 and 4850 Tractors Operation and Test Manual (tm1259)

Illustrated factory Operation and Test Manual for John Deere Tractors Models 4050, 4250, 4450, 4650 and 4850.

This manual will assist you in diagnosing, and troubleshooting for your tractor.
You can use a Windows, Mac, or Android device to view this manual. You only need to have a PDF reader installed.

Covered Models:
   4050
   4250
   4450
   4650
   4850

Format: PDF, 1086 pages
Language: English
Publication Date: 01 Sep 1987
Table of Contents:
   Engine
      System Operation
      System Tests and Diagnosis
   Fuel/Air
      Air Intake System
      Diesel Fuel System
      Control Linkage
   Electrical Operation and Tests
      Electrical System Information
      Phase I Electrical Wiring Diagrams
      Phase II Electrical Wiring Diagrams
      Electrical Diagnosis
      Delcotron Charging Circuit
      John Deere Charging Circuit
      Starting Circuit
      Lighting Circuit
      Investigator II and Digital Tachometer
      Gauge Cluster Instrumentation
      Analog Tachometer
      Accessories Circuit
      Performance TRAK I Radar System
      Performance TRAK II Radar System (Mini-Monitor)
      Performance TRAK III Radar System (Multi-function Monitor)
   Power Train (Perma-Clutch)
      QRT System Operation
      Perma Clutch Operation
      Quad-Range Two Speed Planetary
      Eight Speed
      Transmission Oil Pump
      Transmission Lubrication Valves
      Transmission Control Valves
      Differential and Final Drive
      Syncro-Range Transmission
      PTO
      Quad-Range Transmission Diagnosis
   Power Shift Transmission Operation
      Mechanical Operation
      Hydraulic Controls
      PTO, Differential, and Final Drives
      Power Shift Transmission Diagnosis
      Mechanical Front Wheel Drive
   Steering/Brake Operation and Tests
      Power Steering
      and 4850 Power Steering
      Power Brakes
   Hydraulics
      Perma-Clutch Transmission Operation
      Power-Shift Transmission Hydraulic System Operation Tests
      Main Hydraulic Pump
      Quad-Range Transmission Hydraulic Valves
      Power Shift Transmission Hydraulic Valves
      Pressure Control Valve
      Hydracushioned Seat
      Rockshaft - (4050,4250,4450)
      Rockshaft Operation (4650 and 4850)
      Selective Control Valve
      Remote Cylinder
      Quad-Range Hydraulic Diagnosis
      Power Shift Transmission Hydraulic Diagnosis
   Operator Station Operation & Tests
      Air Conditioning System
      Air Conditioning System Tests - Introduction
      System Tests Without Timer Relay-Warning Lamps
      System Tests With Timer Relay-Warning Lamps
      Heating System Operation and Tests
   Special Tools
      Purchased Tools
      Fabricated Tools
      Test Equipment Calibration