Mitsubishi 4G1 Service Manual page 53

End gap
Piston kg
INSPECTION
PISTON RING
If the limit is exceeded, replace the ring or piston, or both.
Standard value:
No. 1 0.03 - 0.07 mm (A012 - .0028 h.)
No. 2 0.02 - 0.08 mm (&IO8 - .0024.'in.)
Limit: 0.1 mm (.004 in.)
(2) insert the piston ring into the cylinder bore. Force the ring
down with a piston, the piston 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 thickne$s gauge.
If the end gap is excessive, replace the piston ring.
Standard value:
0.20 - 0.40 mm (.0079 - .0157 in.)
No. 1
No. 2 0.20 - 0.35 mm (-0079 - .0138 in.)
0.20 - 0.70 mm (.0079 - .0276 in.)
Oil
Limit:
No. 1, No. 2
Oil
(2) Cut the plastic gauge to the same length as the width of
bearing and place it on a crankshaft pin in parallel with its
axis.
(3) Install the connecting rod cap carefully and tighten the bolts
to specified torque.
(4) Carefully remove the connecting rod cap.
(5) Measure the width of the plastic gauge at its widest part by
using a scale printed on the plastic gauge package.
Standard value: 0.02 - 0.05 mm (.OOOS - AI020 in.)
Limit: 0.1 mm (.004 in.)
0.8 mm (.031 in.)
1.0 mm (.038 in.)