CYLINDER HEAD, CYLINDER, PISTON
CYLINDER HEAD, CYLINDER, PISTON
3-5-35
A
B
C
Cylinder block removal
◆
Remove the cylinder head gasket
【
A
】
.
◆
Remove the two M6 connecting bolts
【
B
】
.
◆
Disassemble the crankshaft (see the chapter of
crankshaft connecting rod piston assembly).
◆
Take out the cylinder block and piston as a whole
from the crankcase, and remove the cylinder block
gasket
【
C
】
.
◆
Remove the piston and connecting rod assembly
from the cylinder block.
TIPS
If the piston will continue to be used, please make
a mark according to the installation position during
disassembly, so that the same cylinder position can be
installed in the next assembly.
Cylinder block and piston
Cylinder block inspection
◆
Keep the top surface of the cylinder block clean,
place a ruler
【
A
】
on the top surface of the cylinder
block, and measure the distance between the ruler
【
A
】
and different positions of the cylinder block
with a feeler gauge. Cylinder head deformation limit:
0.05 mm (0.002"). If the cylinder head deformation
exceeds the limit, replace the cylinder block.
◆
Check the cylinder bore for wear, scratches or
damage.
◆
Measure the inner diameter of the cylinder hole
according to the three heights shown in the figure
(
【
B
】
is 15mm from the top surface,
【
C
】
is in
the middle, and
【
D
】
is 15mm from the bottom),
A