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ENG
CYLINDER HEAD, CYLINDER AND PISTON
EC474301
Piston
1. Remove:
9Carbon deposits
From the piston crown a and ring groove
b.
2. Inspect:
9Piston wall
Score marks → Repair or replace.
3. Measure:
9Piston skirt diameter
Use micrometer 1.
Measure the specific distance a from the
bottom edge.
Out of specification → Replace.
2. Inspect:
9Cylinder inner surface
Score marks → Repair or replace.
Use #400~600 grit wet sandpaper.
cC
Do not rebore the cylinder.
3. Measure:
9Cylinder bore “C”
Use cylinder gauge 1.
Out of limit → Replace.
NOTE:
Measure the cylinder bore “C” in parallel (A, B,
C) to and at right angles to the crankshaft (a, b).
Then, find the average of the measurements.
17.5 mm 53.957~53.972 mm
(0.69 in) (2.1243~2.1249 in)
Standard Wear limit
Cylinder 54.000~54.014mm 54.1 mm
bore “C” (2.1260~2.1265 in) (2.130 in)
Taper “T” —
0.05 mm
(0.0020 in)
C=Maximum Aa~Cb
T=(Maximum Aa, or Ab) —
(Maximum Ba, or Bb)
Distance
aa
Piston dia.
5MV-9-10-4B 6/12/00 8:39 PM Page 2