tractor: front view
				   		There are tractors with two or four driving wheels and two or four wheels that change the direction of the tractor.
				
 
					
					
					
						tread bar 
						Raised part of the tire tread that improves traction for various usage conditions.
				  	
 
					
						step 
						Tread or set of treads built into the body for climbing up to or down from the cab.
				  	
 
					
						rim 
						Metal circle constituting the wheel’s circumference and upon which the tire is mounted.
				  	
 
					
						exhaust stack 
						Vertical upper part of the conduit that evacuates exhaust gas from the engine.
				  	
 
					
						fender 
						Part of the body that covers part of the wheel and serves as a shield from flying mud.
				  	
 
					
						cab 
						Compartment from which the operator drives the truck and operates the tools or agricultural machinery.
				  	
 
					
						steering wheel 
						Circular instrument used by the operator for steering the guide wheels.
				  	
 
					
						engine compartment 
						Device converting the combustion of fuel and air into mechanical energy.
				  	
 
					
						front wheel 
						Wheel that changes the tractor’s direction; it is usually smaller than the rear wheel.
				  	
 
					
						driving wheel 
						Wheel that receives the engine’s power and propels the tractor.
				  	
 
					
						headlight 
						Lamp on the front of the vehicle that illuminates the space in front.
				  	
 
					
						counterweight 
						Mass that balances and stabilizes the tool hitched to the tractor.