Mazda Training manual - part 12

Powertrain Engines 

Camshafts 

• 

The camshafts are equipped with a pin for the installation of the camshaft pulleys. 

• 

The intake camshaft is equipped with an oil line supplying oil to the camshaft actuator of 
the variable valve timing system. 

• 

The intake camshaft has a pulse wheel for the CMP sensor signals. 

 

Valve Train 

• 

The valve train is similar to that of the L-type engines. In addition, the procedure for 
releasing the timing chain tension is the same as on the L-type engines. 

 

L1001.4_01032 

 

1 

Camshaft sprocket 

6 

Inner plate 

2 

Timing chain 

7 

Chain guide 

3 Pin 

8 Crankshaft 

sprocket 

4 

Guide plate 

9 

Chain tensioner 

5 

Middle plate 

10 

Chain tensioner arm 

 

Curriculum Training 

01-35 

Engines Powertrain 

Valve Timing 

• 

For verifying or adjusting the valve timing, the crankshaft sprocket key has to be aligned 
with the timing mark on the oil pump housing. 

 

L1001.4_01034 

 

1 

Timing mark 

2 

Crankshaft sprocket key 

 
• 

For verifying or adjusting the valve timing, the timing marks on the camshaft sprockets 
have to be aligned, so that they form a straight line with the upper horizontal surface of 
the cylinder head. 

 

L1001.4_01035 

 

1 

Timing marks 

2 

Cylinder head upper surface 

 

01-36 Curriculum 

Training 

Powertrain Engines 

Lubrication 

Features 

• 

The lubrication system of the Z-type engines has the following features: 

– 

Trochoid gear type oil pump, directly driven by the crankshaft 

– 

Water-cooled type oil cooler (depending on model) 

– 

Spin-on type oil filter  

– 

Oil jet valves 

 

Parts Location 

 

L1001.4_01038 

 

1 

Oil jet valve 

7 

Oil pan 

2 

With oil cooler 

8 

Washer 

3 

O-ring 

9 

Oil pan drain plug 

4 

Oil cooler 

10 

Oil pump 

5 Oil 

filter 

11 Gasket 

6 

Oil pressure switch 

12 

Oil strainer 

 

Curriculum Training 

01-37 

Engines Powertrain 

Cooling System 

Features 

• 

The cooling system of the Z-type engines has the following features: 

– 

Water pump driven by the accessory drive belt 

– 

Pressurized type coolant reserve tank  

– 

FL22 longlife engine coolant 

– 

Cooling fan with cooling fan motor and integrated fan control module  

 

Parts Location 

 

L1001.4_01039 

 

1 

Coolant reserve tank 

5 

Radiator cowling 

2 

Cooling system cap 

6 

Cooling fan motor with fan control 
module 

3 

Water pump 

7 

Cooling fan 

4 Thermostat 

8 Radiator 

 
 

01-38 Curriculum 

Training