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Mazda Engine SKYACTIV-G 2.5. Manual - part 23

MECHANICAL

01-10–76

5. Apply silicone sealant to the areas shown in the

figure.

Caution

• Apply the silicone sealant so that it goes

into the cylinder head gasket.

6. Install the engine front cover to the engine.

Note

• Temporarily install an appropriate bolt to the

drive belt auto tensioner installation bolt hole

to prevent:

—

A silicone sealant adhesion malfunction

in the drive belt auto tensioner

installation bolt hole.

—

A bolt mis-installation due to silicone

sealant hardening.

7. Prepare an appropriate

M8 X 1.25 bolt (length 40

mm {1.6 in}).

Caution

• For the number 10 bolt of the tightening

order, install the bolts with new washer.

SEALANT

CYLINDER BLOCK

CYLINDER HEAD

CYLINDER
HEAD
GASKET

SEALANT

VIEW FROM A

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DRIVE BELT AUTO
TENSIONER
INSTALLATION BOLT HOLE

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MECHANICAL

01-10–77

01-10

8. Tighten the engine front cover installation bolts in the order shown in the figure.

Tightening torque

20—26 N·m {2.1—2.6 kgf·cm, 15—19 in·lbf}

9. Remove the bolt installed to the drive belt auto tensioner installation bolt hole when installing the drive belt auto

tensioner.

Oil Pan Assembly Note

1. Completely clean and remove any oil, dirt, sealant or other foreign matter that may be adhering to the cylinder

block and oil pan.

2. When reusing the oil pan installation bolts, clean any old sealant from the bolts.

Caution

• Apply the silicon sealant in a single, unbroken line around the whole perimeter.

• To prevent silicone sealant from hardening, adhere the oil pan to the cylinder block within 10 min.

after silicone sealant is applied. Tighten the installation bolts completely soon after adhering.

• Using bolts with the old seal adhering

could cause cracks in the cylinder block.

WASHER

M8 x 1.25, LENGTH
40 mm {1.6 in}

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OLD SEALANT

DAMAGE

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MECHANICAL

01-10–78

3. Apply silicone sealant to the oil pan along the inside of the bolt holes as shown in the figure.

Thickness

3.0—7.0 mm {0.12—0.27 in}

4. Install the oil pan using the following procedure:

(1) Install the oil pan to the cylinder block.

(2) Temporarily tighten the two bolts shown in the

figure.

(3) Tighten the bolts in the order shown in the

figure.

Tightening torque

8—11 N·m {82—112 kgf·cm, 71—97 in·lbf}

SEALANT

CYLINDER BLOCK

A-A SECTIONAL VIEW

0.5—1.5 mm {0.02—0.05 in}

OIL PAN

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BOLT

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MECHANICAL

01-10–79

01-10

Electric Variable Valve Timing Motor/Driver Assembly Note

1. Install a new O-ring to the O-ring installation groove of the engine front cover.

Caution

• To prevent damage to the electric

variable valve timing motor/driver, do not

apply excessive force (force of 100 N

{10.2 kgf, 22.5 lbf} or more) to the shaded

areas shown in the figure.

2. Install the electric variable valve timing motor/

driver using the following procedures.

Note

• The eccentric shaft on the electric variable

valve timing actuator side can be rotated to

the left and right.

• The electric variable valve timing motor/

driver can be assembled with the joint

groove of the eccentric shaft in any position,

and it will not lead to vehicle damage or

performance reduction.

(1) Before installation, rotate the joint on the end

of the electric variable valve timing motor so

that it is aligned to the joint groove on the

electric variable valve timing actuator side.

(2) Engage the joint on the end of the electric

variable valve timing motor with the joint

groove on the electric variable valve timing

actuator side.

(3) Attach the seal surface.

(4) Tighten the electric variable valve timing

motor/driver installation bolts.

Tightening torque

20—26 N·m {2.1—2.6 kgf·m, 15—19 ft·lbf}

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JOINT GROOVE

ELECTRIC VALIABLE VALVE TIMING ACTUATOR

ECCENTRIC
SHAFT

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JOINT

JOINT GROOVE

ELECTRIC VARIABLE
VALVE TIMING
MOTOR/DRIVER

ELECTRIC VARIABLE
VALVE TIMING ACTUATOR

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