Daihatsu F300 Service Manual page 1266

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2. Measure the outer diameter of the piston pin
at
the two points
as shown in the right figure, using a micrometer.
Specified Value: 18.991 - 18.997 mm
INSPECTION OF PISTON RINGS
1. Visually inspect the piston ring for excessive uneven wear or
scratches. If any abnormality exists, replace the piston ring
with a new part .
2. Check of piston ring dimensions
(1) Measure the width of the piston ring.
1st 2.80-3.00
2nd 3.00- 3.20
3rd Side rail 2.25 - 2.45
Spacer
{2) Measure the length of the piston ring.
1st 1.170-1.190
2nd 1.470- 1.490
3rd Side rail 0.48- 0.52
Spacer a 2. 75 - 2.90
b 1.87-1.92
(3) Inspection of piston ring end gap
(j) Apply engine oil to the cylinder walls.
®
Insert the piston rings into the cylinder bore.
@ Using a piston, push down the piston ring to a point
110 mm measured from the cylinder block upper
surface.
EM-125
1st ring
2nd ring
3rd ring
ENGINE MECHANICALS
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Side rail
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Piston ring
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