1. Tractor Safety, Operation, and Maintenance
Tractor Systems

2. Tractor Systems
The tractor has many systems that must be properly serviced and maintained to ensure long life and service.

3. Engine Classifications
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
- Petrol
- Diesel
- LP

4. Diesel Engine & Petrol Engine

5. Four Stroke Cycle

6. Major Systems
Lubrication System
Electrical System
Cooling System
Fuel System
Ignition System

7. Air Intake
Parts:
Pre-Cleaner
Air Cleaner
Intake Manifold
Intake Valve

8. Exhaust System
Parts:
Exhaust Valve
Exhaust Manifold
Muffler
Cap

9. Lubricating System Full Flow & By-Pass
Parts:
Crankcase Oil Reservoir (Oil Pan)
Oil Pump
Oil Filter
Oil Passages
Pressure Regulating Valve
Oil goes to:
Camshaft Bearings
Crankshaft Main Bearings
Piston Pin Bearing
Valve Tappet Shaft

10. Electrical System Parts: Battery Ground Cable Key Switch Ammeter
Voltage Regulator
Starter Solenoid
Starter
Distributor * Petrol Only
Coil
Alternator
Spark Plug
Power Cable

11. Cooling System Liquid & Air
Parts:
Radiator
Pressure Cap
Fan
Fan Belt
Water Pump
Engine Water Jacket
Thermostat
Connecting Hoses
Liquid or Coolant

12. Fuel Systems
Gasoline
Diesel
Liquid Propane (LP)
Alternate Fuels

13. Petrol Fuel System Parts: 1. Fuel Tank 2. Fuel Pump 3. Carburetor
4. Fuel Filter
5. Fuel Lines

14. Diesel Fuel System Parts: 1. Fuel Tank 2. Fuel Pump 3. Fuel Filters
4. Injection Pump
5. Injection Nozzles

15. Liquid Propane (L P) Fuel System
Parts: Fuel Tank
2. Fuel Strainer
3. Converter
4. Carburetor

16. Hydraulic System Open & Closed
Parts: Reservoir Lines
2. Accumulator or Variable Displacement Pump Fluid
3. Cooler filter
4. Valves

17. Power Transmission Mechanical & Hydraulic
Parts:
Clutch Pedal
Clutch
Shift Controls
Transmission
Differential
Differential Lock Pedal
Final Drives
Power Take Off (PTO)

18. ORITU

20. Chemical Bonding
Yawa