CONTENTS
| PAGE | |
| CHAPTER I | |
| TRACTOR PRINCIPLES | |
Comparison between tractors and automobiles—What is required for each—Advantage of understanding the mechanism—No standard tractor design—Principal parts of a tractor—Necessity for each | [ 1] |
| CHAPTER II | |
| ENGINE PRINCIPLES | |
Power attained from heat—Combustible mixture—Principle of engine operation—Combustion space—Gas engine cycle—Dead strokes—Flywheel—Starting an engine—Inlet stroke—Compression stroke—Importance of compression—Ignition—Advance and retard of ignition—Power stroke—Exhaust stroke—Production of power—Vertical and horizontal engines—Firing order | [ 9] |
| CHAPTER III | |
| ENGINE PARTS | |
Base—Bearings—Cylinders—Crankshaft—Piston—Connecting rod—Wrist pin—Piston rings—Valves—Cam—Valve mechanisms—Cooling system | [30] |
| CHAPTER IV | |
| FUELS AND CARBURETION | |
Oxygen necessary for combustion—Forming a mixture—Rich and poor mixtures—Carbon—Preignition— Carbureter—Spray nozzle—Evaporation of fuels—Carbureter principles— Extra air inlet—Effect of heat on mixture—Loading—Strangler | [52] |
| CHAPTER V | |
| CARBURETERS | |
Carbureter parts—Manifold—Action of carbureter—Float feed—Kerosene and gasoline—Descriptions of carbureters—Pump feed—Use of water in the mixture—Application of heat—Fuel pumps—Air cleaners—Governors | [70] |
| CHAPTER VI | |
| IGNITION | |
Principle of ignition—Point of ignition—Preignition—Advance and retard—Parts of ignition system—Magnetism—Induction—Magneto—Action of armature—Armature windings—Circuit breaker—Circuit—Shuttle and inductor armatures—Sparking current—Grounded circuit— Magneto parts—Impulse starter | [102] |
| CHAPTER VII | |
| BATTERY IGNITION SYSTEMS | |
Principle of spark coil—Windings—Timer—Atwater-Kent system—Vibrator—Spark plugs | [131] |
| CHAPTER VIII | |
| TRANSMISSION | |
Transmission parts—Clutches—Necessity for change speed gear—High and low gear—Types of change speed gears—Necessity for differential—Principle of differential—Drives—Worm | [143] |
| CHAPTER IX | |
| TRACTOR ARRANGEMENT | |
Tractor requirements—Tractor types—Engine position—Front axles—Spring supports | [167] |
| CHAPTER X | |
| LUBRICATION | |
Importance of lubrication—Effect of oil—Kinds of oil—Effect of temperature on oil—Using the right kind of oil—Burning point—Viscosity—Lubrication charts—Oiling systems—Oil pumps—Mechanical oiler— Oil cup—Grease cup | [175] |
| CHAPTER XI | |
| TRACTOR OPERATION | |
Using a new tractor—Breaking in—Daily inspection—Driving—Shifting gears—Driving on hills—Using the engine as a brake—Cold weather conditions—Starting in cold weather—Protection against freezing—Starting a tractor | [201] |
| CHAPTER XII | |
| ENGINE MAINTENANCE | |
Fuel system and carbureter—Carbureter adjustment—Dirt in the fuel—Running on kerosene—Care—Magneto and ignition system—Care of magneto—Smoothing platinum points—Adjustment—Timing a magneto—Testing a magneto—Ignition trouble—Compression—Testing for compression leaks—Valve grinding—Valve timing—Carbon—Removing carbon | [213] |
| CHAPTER XIII | |
| LOCATING TROUBLE | |
Engine will not start—Engine loses power—Engine stops—Engine misses—Engine starts; but stops—Engine overheats—Engine smokes | [245] |
| CHAPTER XIV | |
| CAUSES OF TROUBLE | |
Troubles and their causes in tabular form | [259] |
INDEX | [261] |