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

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Mazda 3
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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
 


Hit Counter by Digits


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Cylinder block



Technological features of the new cylinder is that it is cast from an aluminum alloy installed inside the housing with cast iron cylinder liners. This improves heat transfer and reduces its mass. Cylinder liner - Thin thus bore is not possible. In addition, as already mentioned, the cylinder block is provided with a long skirt piston and integrated main bearing caps. The water jacket of the cylinder - a closed type, which increases zheskost and helps to reduce vibration and noise. Cover separator cylinder is located on the opposite side of the inlet. Crankcase ventilation valve and oil separator with an adapter for the installation of ventilation valve improve the efficiency of ventilation of crankcase gases.

Cylinder block
Fig. 2.6. The cylinder block 1 - a cover of the oil separator; 2 - Valve PCV; 3 - a cover of the radical bearing; 4 - flange cover oil separator; 5 - the cylinder block


The new engine block is not used installation keys bearing crank journals. Cylinder head bolts are torque in the zone of plasticity tightening is carried out in five stages. This provides stability when fastening the bolt axis (Fig. 2.6).

Technology hole for detecting the position TDC of the first cylinder
Fig. 2.7. Technology hole for detecting the position TDC of the first cylinder 1 - the block of cylinders; 2 - cylinder number 1; 3 - technological hole; 4 - a special device; 5 - TDC of the first cylinder; 6 - piston of the first cylinder; 7 - counterweight crankshaft


Process hole for installing a special device used for detecting the position of the TDC of the first cylinder is located on the right side of the cylinder block. TDC is determined by the touch-edge special tool rocker of the first cylinder (Fig. 2.7).




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Cylinder head gasket
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The crankshaft and main bearing

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