Tractor Safety Operation and Maintenance Tractor Systems A

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 1. 2. 3. 4. 5. 6. 7. 8. Intake Exhaust Lubricating Electrical Cooling Fuel Hydraulic Drive Train

Intake System Parts: 1. Pre-Cleaner 2. Air Cleaner 3. Intake Manifold 4. Intake Valve 5. Turbocharger (if used) 6. Intercooler (if used)

Exhaust System Parts: 1. Exhaust Valve 2. Exhaust Manifold 3. Muffler 4. Cap

Lubricating System Full Flow & By-Pass Parts: 1. Crankcase Oil Reservoir (Oil Pan) 2. Oil Pump 3. Pressure Regulating Valve 4. Pressure Gauge 5. Oil Filter 6. Oil Passages

Lubricating System Full Flow & By-Pass 1. Oil goes to: 2. Camshaft Bearings 3. Crankshaft Main Bearings 4. Piston Pin Bearing 5. Valve Tappet Shaft

Parts: Electrical System 1. Battery 2. Ground Cable 3. Key Switch 4. Ammeter 5. Voltage Regulator 6. Starter Solenoid 7. Starter 8. Distributor * Gasoline Only 9. Coil 10. Alternator 11. Spark Plug 12. Power Cable

Cooling System Liquid & Air Parts: 1. Radiator 2. Pressure Cap 3. Fan 4. Fan Belt 5. Water Pump 6. Engine Water Jacket 7. Thermostat 8. Connecting Hoses 9. Liquid or Coolant

Fuel Systems Gasoline 2. Diesel 3. Liquid Propane (LP) 1.

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: 1. Clutch Pedal 2. Clutch 3. Shift Controls 4. Transmission 5. Differential 6. Differential Lock Pedal 7. Final Drives 8. Power Take Off (PTO)

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