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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
Engine Model L8 or LF
Checking the contents of the CO / CH in the exhaust gas
Measurement of engine compression
Verify accessory drive belt
General information and safety when removing the power unit
Removal of sealant
Removal and installation of the power unit
Check actuator variable valve timing (L3)
Removal and installation of the actuator variable valve timing (L3)
Timing chain drive
Removal and installation of the oil control valve (OCV) (L3)
Checking the oil control valve (OCV) (L3)
By operation of the spool valve (OCV) (L3)
General repair operations on the power unit
Dismantling the cylinder head (beginning)
Dismantling the cylinder head (end)
Dismantling cylinder (beginning)
Removing and installing crankshaft rear oil seal
Dismantling cylinder (the end)
Check the cylinder head
Assembling the cylinder (the beginning)
Assembling the cylinder (the end)
Assembling the cylinder head
Assembling the valve timing
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
 


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Dismantling the cylinder head (beginning)



The components of the first stage of disassembly of the cylinder head
Fig. 2.120. The components of the first stage of the disassembly of cylinder head: 1 - fixing bolts of asterisks of camshafts; 2 - stars camshafts; 3 - managing the oil valve (OCV) (L3); 4 - Cover the camshaft; 5 - camshafts; 6 - the valve tappet; 7 - a bolt of fastening of the cylinder head; 8 - cylinder head; 9 - cylinder head gasket; 10 - the block of cylinders


Loosen the bolts stars camshafts (see. Fig. 2.120) (bolt mechanism variable valve timing), as shown in Figure 2.121.

Loose bolts of fastening of asterisks of camshafts
Fig. 2.121. Loose bolts of fastening of asterisks of camshafts


Remove the camshaft sprocket. The actuator of variable valve timing (L3 with variable valve timing mechanism).
Remove the control oil valve (OCV) (L3 with variable valve timing mechanism).

Sequence of easing of bolts of camshaft bearing caps
Fig. 2.122. Sequence of easing of bolts of camshaft bearing caps


Remove the camshaft bearing caps by loosening the bolts in three steps in the order shown in Figure 2.122.

NOTE
Before removing the camshaft bearing caps, check the axial clearance of the camshaft and camshaft bearing clearances (see. Below). Camshaft bearing caps are numbered to ensure correct assembly. After removal, keep the lid together with the cylinder head, from which they were taken. Do not mix the caps.

Remove the camshafts.
Snimte valve lifters.

NOTE
Valve tappets are numbered to ensure correct assembly. After removing the hold tappets with the cylinder head, from which they were taken. Do not mix the tappets.


Sequence of easing of bolts of the cylinder head
Fig. 2.123. Sequence of easing of bolts of the cylinder head


Loosen the bolts of the cylinder head in two or three steps in the order shown in Figure 2.123.




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Dismantling the cylinder head (end)

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