CYLINDER HEAD, CYLINDER, PISTON
CYLINDER HEAD, CYLINDER, PISTON
3-5-37
Piston measurement
◆
Measure the diameter of the piston pin hole in two
directions (90° apart). If the limit is exceeded, the
piston needs to be replaced.
Piston pin hole diameter
standard value
：
20.009 ~ 20.018 mm(0.7877" ~ 0.7881")
Limit: 20.05 mm(0.7893")
◆
Measure the diameter of the large-diameter
detection area on the piston, and record the
measurement result.
A
C
D
◆
Use your fingers to carefully open the opening of
the piston ring
【
C
】
, then lift the piston ring up and
remove it from the piston.
◆
Remove the remaining piston ring in the same way.
!
CAUTION
When disassembling the piston ring, do not open it too
much, so as not to damage the piston ring or reduce the
tension of the piston ring.
◆
The oil ring assembly
【
D
】
is composed of two
upper and lower blade rings and an intermediate
liner ring. When disassembling, first remove the
upper blade ring, then the lower blade ring, and
fi nally the intermediate liner ring.
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