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1.Check for side clearance.
If the limit is exceeded, replace the ring or piston, or
both.
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note |
In cases of keystone type,
measure the ring to groove clearance as
shown.
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Standard value:
No. 1: 0.110
- 0.160 mm No. 2: 0.650 - 0.105
mm Oil: 0.025 - 0.065
mm
Limit:
No. 1: 0.20
mm No. 2: 0.15 mm Oil: 0.10
mm
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2.Insert the piston ring
into cylinder bore. Force it down with a piston, its crown
being
in contact with the ring, to correctly position it at right
angles to the cylinder wall. Then,
measure the end gap with a thickness gauge. If the end gap
is excessive, replace piston ring. Standard
value:
No. 1: 0.20 - 0.30 mm No.
2: 0.20 - 0.30 mm Oil: 0.30 - 0.50
mm
Limit: 0.8 mm
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1.Wipe off oil from the
crankshaft pin and connecting rod bearing.
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2.Cut a piece of plastigage
whose length is equivalent to the width of the bearing and
place it on the crankshaft pin in parallel with its
axis.
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3.Install the connecting rod
cap carefully and tighten the nuts according to INSTALLATION
SERVICE POINTS.
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4.Remove the nuts, then
plastigage remove the connecting rod cap carefully.
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5.Measure the largest width
of the crushed plastigage using the ruler printed on the bag
of the plastigage. Standard value: 0.028
- 0.056 mm Limit: 0.1 mm
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