Mazda Training manual - part 23

Powertrain Engines 

Overview 

 

L1001.4_01073 

 

NOTE:  Some of the components of the WL-C engine are very similar in construction and 

operation to those of the RF-T engine. Therefore, this section only describes the 
components which are new or differ from those of the RF-T engine. 

 

Curriculum Training 

01-79 

Engines Powertrain 

Balancer Shafts 

• 

The balancer shafts are directly fitted into the cylinder block. The crankshaft drives the 
balancer shafts via helical gears. 

 

L1001.4_01135 

 

1 

Balancer shaft gears 

2 

Balancer shaft 

 

01-80 Curriculum 

Training 

Powertrain Engines 

Cylinder Head 

• 

The cylinder head features a bolted on camshaft bearing frame, which can be replaced 
separately. 

• 

The cylinder head gasket is available in three different thicknesses depending on the 
piston protrusion. The gasket is marked respectively (refer to the workshop manual for 
details). 

• 

The cylinder head bolts are torque-to-yield bolts, which must be tightened in several 
stages (refer to the workshop manual for details). 

 

NOTE:  The cylinder head bolts must not be re-used if their length exceeds the specification 

(refer to the workshop manual for details). 

 

L1001.4_01076 

 

1 

Camshaft bearing caps 

4 

Camshaft bearing frame 

2 Camshafts 

5 Cylinder 

head 

3 

Injector sealing ring 

6 

Engine front side 

 

Curriculum Training 

01-81 

Engines Powertrain 

Camshaft 

• 

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

• 

The camshaft pulleys for the intake and exhaust camshaft are identical. A letter (“I” for 
intake and “E” for exhaust) on the camshaft pulleys indicates the installation position, i.e. 
the letter on the camshaft pulley must be aligned with the pin on the camshaft. 

 

L1001.4_01141 

 

1 

Intake camshaft pulley 

3 

Exhaust camshaft pulley 

2 Pin 

  

 

01-82 Curriculum 

Training