REPAIR MAINTENANCE OPERATION OF MOTOR VEHICLES
Mazda 3 (2003 release)

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Mazda
	3
		Operation and maintenance of car
		Engine
			General description new engines models L8, LF, L3
				The mechanical part of engines
					Cylinder head cover
					Cylinder Head
					Cylinder head gasket
					Cylinder block
					The crankshaft and main bearing
					Balancing unit
					The principle of operation of the balancing unit
					Vibration damper crankshaft
					Engine Front Cover
					Piston
					Piston rings and piston pin
					The connecting rod and connecting rod bearing
					The valve mechanism - general information
					Camshaft
					Camshaft sprocket
					Crankshaft sprocket
					Timing chain drive
					Chain tensioner timing
					Valve, valve springs, valve stem seal, Valve Guides
					Tappet
				Variable valve timing mechanism
				Lubrication system
				Cooling system
				Fuel system
				Exhaust and Emission
				Electric motors
			The mechanical part of engines
			Appendix 1
			Annex 2
			Appendix 3
			Engine Z6 - mechanical part
			Lubrication system
			Cooling system
			Intake system
			Fuel system
			Exhaust and Emission
			Ignition system
			Control system
			Tables
		Transmission
		Chassis
		Steering Gear
		Brakes
		Onboard electric
		Body

printable version

The principle of operation of the balancing unit

Fig. 2.12. The principle of operation of the balancing unit 1 - shim; 2 - the crankshaft; 3 - the front part of the engine; 4 - balancing the body block; 5 - counterweights; 6 - balancing shaft ?��2; 7 - drive gear; 8 - balancer shaft driven gear ?��1

Structurally, the balancing unit is mounted under the crankshaft has two balancing shaft and the housing-box into which they are placed. Using the balancing shaft and shims gap adjustment is performed in engagement with the crankshaft. Balancing shafts (?�� 1 and ?�� 2) driven by the crankshaft drive gear. Rotational motion is transmitted from the pinion gear, which is arranged between the third crank journal and the fourth cylinders, the balancer shaft directly to the number 1 to the driven gear. Balancing unit transmits rotation number balancer shaft 2. The gear ratio of the gear of the balancing shafts has been chosen so that the gear rotates twice as fast as the crankshaft. The speed of rotation of the balancing shaft balances the force of inertia of rotation (secondary inertial force of rotation) of the crankshaft. Balancing the unit is not disassemble or repair (Fig. 2.12).

Fig. 2.13. Marking shims balancing block 1 - the cylinder block; 2 - identification mark (2 digits)

NOTE

To adjust the gap between the balancing block and crankshaft, replace the shim. There are 40 kinds of pads of different thicknesses. To determine the type of gasket, get labeled (2 digits) on the strip (Fig. 2.13).

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Vibration damper crankshaft