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