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1.Check for side clearance.
If the limit is exceeded, replace the ring or piston, or
both.
| note |
In cases of keystone type,
measure the ring to groove clearance as
shown.
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Standard value:
No. 1: 0.07
- 0.10 mm
No. 2: 0.05 - 0.06
mm
Oil: 0.02 - 0.06
mm
Limit:
No. 1: 0.15
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.
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Item
|
Standard value
mm
|
Limit
mm
|
No.1
|
0.20 -
0.30
|
0.8
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No.2
|
0.20 -
0.35
|
0.8
|
Oil
|
0.25 -
0.45
|
0.8
|
|
|
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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.
3.Install the connecting rod cap carefully
and tighten the nuts according to INSTALLATION
SERVICE POINTS >>E<<  .
4.Remove
the nuts, then 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: 0.019
- 0.056 mm
Limit: 0.1 mm
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