Mazda Engine SKYACTIV-G 2.5. Manual — part 18
MECHANICAL
01-10–56
Valve Seal Assembly Note
1. Press on the valve seal to the valve guide using
the
SST by hand.
Valve seal identification color
IN: GREEN
EX: GRAY
Valve Spring Assembly Note
Caution
• The valve springs differ depending on IN
and EX sides. Therefore, verify the free
length or identification paint beforehand
and assemble the valve springs correctly.
1. Assemble the valve spring with the small diameter
side of the valve spring facing upward.
VALVE SEAL
49 B012 016
49 B012 016
9.52 mm
{0.375 in}
VALVE SEAL
3.5 mm
{0.14 in}
bpe1ze00000057
IN
EX
PURPLE
PAINT
NOT
PAINTE
50.07 mm {1.971 in}
48.96 mm {1.928 in}
bpe1ze00000094
MECHANICAL
01-10–57
01-10
Valve Keeper Assembly Note
1. Install the valve keeper using the
SST.
Water Outlet Assembly Note
1. Install the water outlet gasket with the bead of the
gasket facing the direction shown in the figure.
2. Temporarily tighten the water outlet installation
bolts.
49 0636 100B
49 B012 0A2A
bpe1ze00000020
B
SECTION B-B
BEAD
CYLINDER HEAD
WATER OUTLET
WATER OUTLET
GASKET
bpe1ze00000021
MECHANICAL
01-10–58
3. Tighten bolt A of the 5 bolts shown in the figure to
the specified torque first.
Tightening torque
8—11 N·m {82—112 kgf·cm, 71—97 in·lbf}
Note
• The tightening order for the remaining 3
bolts is optional.
Thermostat Assembly Note
1. Install the thermostat with the jiggle pin aligned
with the notch of the water outlet.
End Of Sie
BOLT
A
A
BOLT
bpe1ze00000022
THERMOSTAT
WATER OUTLET
NOTCH
JIGGLE-PIN
bpe1ze00000023
MECHANICAL
01-10–59
01-10
CYLINDER HEAD ASSEMBLY (II)
id011000504400
Caution
• If the camshaft is rotated with the timing chain removed and the piston at the top dead center
position, the valve may contact the piston and the engine could be damaged. When rotating the
camshaft with the timing chain removed, rotate it after lowering the piston from the top dead
center position.
• When rotating the camshaft using a
wrench on the cast hexagon, the wrench
may contact the rocker arm and damage
the rocker arm. To prevent damage to the
rocker arm when holding the camshaft on
the cast hexagon, use a wrench on the
rear side of the engine as shown in the
figure to secure a clearance between the
cam.
Note
• Width at the cast hexagon of the camshaft is
22—24 mm {0.87—0.94 in}.
CAMSHAFT
WRENCH
CAST HEXAGON
ROCKER ARM
CONTACT
ENGINE REAR
DOES NOT CONTACT
SECURE CLEARANCE
am3uuw00008968
22
—
24 mm
{0.87
—
0.94 in}
CAMSHAFT
CAST HEXAGON
am3uuw00009029
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