ENGINE
3-18
INSPECTION
09900-20803: Thickness gauge
Using a soft-metal scrapper or discarded piston ring
to decarbon the ring grooves of the piston. Do not use
the steel brush or the piston will be scratched.
09900-20203: Micrometer (50~75 mm)
09900-20605: Caliper gauge
09900-20205: Micrometer (0-25)
8mm
Decarbonize the piston.
Temporary install the piston rings to the suitable position
with marked side upward.
Measure the clearance between the piston ring and groove
with a thickness gauge.
Measure the piston outside diameter at the place 8mm from
the skirt end with a micrometer.
Using a caliper gauge to measure the inside diameter of the
piston pin bore.
Using a micrometer to measure the piston pin O.D..
Piston ring-groove clearance limit:
1st: 0.180 mm 2nd: 0.150 mm
Piston outside diameter limit:
56.844 mm at the 8 mm from the skirt end
Piston pin bore inside diameter limit: 14.03 mm
Piston pin O.D.: limit: 13.98 mm
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