10-5
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
18) Remove the crankshaft from the cylinder block with care
not to damage the journal.
19) Remove the 56 x 70 x 8 mm oil seal from the crankshaft.
Replace the oil seal with a new one on reassembly.
20) Remove the two thrust washers from the cylinder block.
Check the thrust washers for damage (scores, scratches,
etc.) and replace them with the new ones if necessary.
21) Check each main bearing for damage (scores, scratches,
etc.) and replace it with a new one if necessary.
22) Remove the four main bearings from the cylinder block.
• Store the removed main bearings separately by the
journal.
23) Remove the piston assembly from the cylinder by pushing
the piston assembly with the handle of a hammer as
shown.
• Store the removed piston assembly components
separately by the cylinder.
• Before removing the piston assembly, remove the carbon
deposits from the cylinder. Be careful not to damage the
piston.
• Do not damage the cylinder with the connecting rod.
NOTICE
24) Check the 10 x 12 mm dowel pins for deformation and
damage, and replace them with the new ones if necessary.
25) Remove the eight 10 x 12 mm dowel pins from the cylinder
block.
Replace the dowel pins with the new ones on reassembly.
[1]
CRANKSHAFT
[3]
MAIN
BEARING (4)
[4]
THRUST
WASHER (2)
[5]
CYLINDER
BLOCK
[1]
PISTON
ASSEMBLY
[2]
CYLINDER
BLOCK
[1]
10 x 12 mm
DOWEL PIN (8)
[2]
CYLINDER BLOCK
[2]
56 x 70 x 8 mm
OIL SEAL
172
