2.3.2 Push the piston head vertically against the
piston ring in the cylinder and let the piston ring be
on a plane.
2.3.3 Use a feeler gauge to measure the gap
between piston ring ends and the normal value
should be: 0.2mm.
2.3.4 Measurement of piston ring side clearance:
place the removed piston ring into the ring groove
(lean to one side as possible) and then place a
feeler gauge into the other side to measure the
clearance; certain resistance feeling after the feeler
gauge is placed in indicates that the measurement
with feeler gauge will be correct. The normal value
should be 0.03mm. Unit: mm
Contents First ring
Second ring
Third ring
End play 0.2 0.4 /
Side
clearance
0.03 0.03 /
Thickness
1.2 1.6 /
3. Measurement of roundness and cylindricity of
cylinder
3.1 Select appropriate cylinder gauge and outside
micrometer.
