ENGINE MECHANICALS
@
After the cylinder block has been cleaned and checked, calculate the cylinder-to-piston clearanc:
At this calculation, use the minimum measurement value as the cylinder bore diameter of each
cylinder.
Cylinder-to-piston clearance:
0.03
-
0.12 mm (0.0012
-
0.0047 inch)
NOTE:
If the calculated clearance exceeds the specified value, perform boring and honing, referring to the
specifications in
@.
However, if the oversize pistons have been installed and the cylinder-to-piston
clearance has exceeded the specified value, replace the cylinder block and pistons.
L
I
Fig.
5-249
Wu-05291
a
Assemble the spring to the main body of the
SST.
@
Attach the smaller bar on the spring. While pushing
the lever into the body, install the fitting piece to the
main body, with the surface having a cut-out section
facing upward. Then, secure it with the attaching
screw.
@
Place the piston on the fitting piece, aligning the
cut-out sections.
09221
-2501
8-000
@
Install the longer lever into the piston hole.
@
Press off the piston pin, using a press.
NOTE:
Fig.
5-250
WM-05292
Arrange the disassembled pistons and piston pins in order
so that their installation positions
riiay be known readily.
'NM-05289
2.
Checking of piston and pision rings
(1)
Remove the piston rings No.1 and No.2, using a
commercially-avaiiable piston ring expander or the
like.
NOTE:
(iJ
Arrange the removed piston rings in order so that their
installation positions may be known readily.
@ Do not expand the piston ring unnecessarily beyond
the required extent.
Fig.
5-248
WM-05200
(2)
Remove the oil ring
by
hand.
NOTE:
@
Arrange the removed oil rings in order so that their
installation positions may
be
known readily.
@
Do not expand the oil ring unnecessarily beyond the
required extent.
(3)
Disassemble the piston pin
from
the piston, using the
following
SST.
SST: 09221 -2501 8-000
7
Main
body
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