Tractor Safety, Operation, and Maintenance Tractor Systems A VGP Production 2003
Tractor Systems The tractor has many systems that must be properly serviced and maintained to insure long life and service.
Engine Classifications With the demise of the steam powered tractor in the late 1800’s, most modern tractors are equipped with internal combustion engines. Internal combustion engines are identified by the number of strokes in the cycle and by the fuel that is used to run them. Common Tractor Classifications: 4 stroke cycle - gasoline - diesel - LP
Engine Internal Components
Four Stroke Cycle
Major Systems Intake Exhaust Lubricating Electrical Cooling Fuel Hydraulic Drive Train
Intake System Parts: Pre-Cleaner Air Cleaner Intake Manifold Intake Valve Turbocharger (if used) Intercooler (if used)
Exhaust System Parts: Exhaust Valve Exhaust Manifold Muffler Cap
Lubricating System Full Flow & By-Pass Parts: Crankcase Oil Reservoir (Oil Pan) Oil Pump Pressure Regulating Valve Pressure Gauge Oil Filter Oil Passages
Lubricating System Full Flow & By-Pass Oil goes to: Camshaft Bearings Crankshaft Main Bearings Piston Pin Bearing Valve Tappet Shaft
Electrical System Parts: Battery Ground Cable Key Switch Ammeter Voltage Regulator Starter Solenoid Starter Distributor * Gasoline Only Coil Alternator Spark Plug Power Cable
Cooling System Liquid & Air Parts: Radiator Pressure Cap Fan Fan Belt Water Pump Engine Water Jacket Thermostat Connecting Hoses Liquid or Coolant
Fuel Systems Gasoline Diesel Liquid Propane (LP)
Gasoline Fuel System Parts: 1. Fuel Tank 2. Fuel Pump 3. Fuel Filter 4. Fuel Lines 5. Fuel Intake 6. Carburetor
Diesel Fuel System Parts: 1. Fuel Tank 2. Fuel Pump 3. Fuel Filters 4. Injection Pump 5. Injection Nozzles
L P Fuel System Parts: 1. Fuel Tank 2. Fuel Strainer 3. Converter 4. Carburetor
Hydraulic System Open & Closed Parts: 1. Reservoir 5. Lines 2. Accumulator or Variable Displacement Pump 6. Fluid 3. Cooler 7. filter 4. Valves
Power Transmission Mechanical & Hydraulic Parts: Clutch Pedal Clutch Shift Controls Transmission Differential Differential Lock Pedal Final Drives Power Take Off (PTO)
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