Segway VILLIAN SSV Series - Cylinder Head Assembly

CYLINDER HEAD, CYLINDER, PISTON
CYLINDER HEAD, CYLINDER, PISTON
3-5-34
Cylinder head assembly
!
WARNING
When disassembling and assembling the cylinder head
or operating the valve spring, you need to wear goggles.
◆
Install a new valve oil seal
【
C
】
on the valve guide,
and press the valve oil seal into place with a special
tool.
◆
Apply engine oil to the valve stem, and insert the
exhaust valve
【
A
】
and intake valve
【
B
】
into the
corresponding valve guides.
◆
Install the valve spring seat
【
D
】
, valve spring
【
E
】
, lock clip seat
【
F
】
, and lock clip
【
G
】
in
sequence.
◆
Use special tools to compress the spring until there
is enough space to install the valve lock clip.
◆
Clamp a pair of valve lock clamps into the valve lock
clamp groove.
◆
Repeat the above steps to install the remaining
valves in place.
!
CAUTION
CAUTION
The valve spring is marked with a mark or the end with a
larger pitch is facing upwards.
◆
To install the valve lifter, refer to the chapters of
"Valve Clearance Adjustment" and "Selection of
Lifter".
◆
Align the positioning pins on the cylinder block and
place the cylinder head gasket
【
I
】
. The gasket
should be clean and free of grease.
◆
Align the position of the positioning pin, and place
the cylinder head
【
J
】
. Install new cylinder head
bolts
【
L
】
and tighten them in order.
◆
Install the bolts
【
K
】
and
【
M
】
at both ends and
tighten them according to the torque.
Cylinder head bolt
【
L
】
fi rst step: 12N·m(1.2 kgf·m, 8.8 ft·lb)
Second step
：
35N·m(3.57 kgf·m, 25.8 ft·lb)
Step 3: Rotate 180°
◆
Bolt
【
K
】
and
【
M
】
tightening torque:
Bolt
【
K
】
,
【
M
】
9.8 N·m (1.0 kgf·m, 87 in·lb)
G
G
F
F
E
E
D
D
A
A
C
C
B
B
H
H
1
1
3
3
4
4
6
6
5
5
2
2
M
M
L
L
K
K
J
J
I
I
Bolt tightening sequence