•
Measurement of Cylinder bore
Assemble the cylinder liner at the
cylinder block and measure inner
diameter at upper, middle, lower that
is, 3 steps by 45
O
interval and
calculate the average values after
eliminating the maximum and
minimum values.
•
Measure the clearance between the
cylinder liner bore and the piston outer
diameter, if it is more than the use limit
value, replace either one that is more
severe.
3) Piston ring and ring groove
Inspection
In case of piston ring’s wear, damage or
engine overhaul, replace piston rings.
Gap clearance
Measure the piston ring cut part.
•
Insert the piston ring at the cylinder
liner’s upper part perpendicularly.
•
With a feeler gauge, measure the gap
clearance of piston ring.
•
If the measured value exceeds the
limit value, replace it.
•
Piston ring gap
- 89 -
2
EAMD067I
Standard
127.990 ~ 128.010 mm
Standard
0.233 ~ 0.271 mm
Division
Standard
Limit
Top ring
0.35 ~ 0.55 mm
1.5 mm
2nd ring
0.40 ~ 0.60 mm
1.5 mm
Oil ring
0.40 ~ 0.70 mm
1.5 mm
