Mazda Training manual - part 25

Powertrain Engines 

Valve Timing 

• 

For verifying or adjusting the valve timing of the gear drive the timing marks have to be 
aligned as shown below (refer to the workshop manual for details). 

• 

All helical gears except for the fuel high-pressure pump gear have a punch mark as 
timing mark. However, the punch marks on the crankshaft gear and on the fuel-high-
pressure pump gear can only be seen when the friction gears are removed. 

 

NOTE:  The timing mark of each gear can be aligned easily, if paint is applied to the punch 

marks. 

 

L1001.4_01082 

 

1 

Fuel high-pressure pump gear 

5 

Balancer shaft gear 

2 

View A  

6 

Crankshaft gear 

3 

Timing mark 

7 

Idler gear no.1 

4 

Idler gear no.3 

8 

Idler gear no.2 

 

Curriculum Training 

01-87 

Engines Powertrain 

• 

For verifying or adjusting the valve timing of the belt drive, the timing marks have to be 
aligned as shown below (refer to the workshop manual for details). 

 

L1001.4_01081 

 

1 

Timing marks (camshaft pulleys) 

2 

Timing mark (crankshaft pulley) 

 

01-88 Curriculum 

Training 

Powertrain Engines 

Accessory Drive Belt 

• 

Three V-drive belts are fitted to drive the engine accessories, i.e. two belts drive the 
generator and one belt drives the A/C compressor. 

• 

The drive belt tension can be adjusted via two manual tensioners (refer to the workshop 
manual for details). 

 

NOTE:  The belt deflection has to be checked when the engine is cold, or at least 30 minutes 

after the engine has been switched off. 

 

L1001.4_01083 

 

1 

Measuring point 

5 

Drive belt(s) 

2 

Locknut  

6 

Crankshaft pulley 

3 

Adjusting screw 

7 

Water pump pulley 

4 

Generator pulley 

8 

A/C compressor pulley 

 

Curriculum Training 

01-89 

Engines Powertrain 

Lubrication 

Features 

• 

The lubrication system of the WL-C engine has the following features: 

– 

Gear type oil pump, directly driven by the crankshaft 

– 

Water-cooled type oil cooler 

– 

Spin-on type oil filter 

– 

Oil jet valves 

 

Parts Location 

 

L1001.4_01084 

 

1 

Oil pump 

7 

Oil filter 

2 

Oil jet valve 

8 

Oil pan 

3 

Oil pressure switch 

9 

Oil pan drain plug 

4 

Oil cooler  

10 

Oil strainer 

5 

Oil filter body 

11 

Oil outlet pipe 

6 

Oil cooler and oil filter body component 

12 

Oil dipstick 

 

01-90 Curriculum 

Training