User Manual

EM -56 ENGINE MECHANICAL SYSTEM
Flatness figure of cylinder block
Reference : Below 0.07mm
Limit : 0.2mm
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2
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M7161L
3. Check the cylinder wall to see if it is cracked or dam-
aged. If it is abnormal, repair (oversize) or replace the
cylinder sleeve.
4. Measure the cylinder sleeve ID using the cylinder
gauge. If it is excessively worn, repair it with oversize
and replace the piston and piston ring.
Clearance between piston and cylinder sleeve :
0.080~0.130mm
CAUTION
1. When replacing piston, piston ring should be
replaced together.
2. Even if only one cylinder needs boring, all
cylinder walls should be grinded with over-
size at the s ame time .
3. Measure the most seriously worn cylinder
wall and select the oversize based on the
measu rement.
4. Available oversizes are +0.25, +0.50, +0.75
and +1. 00.
5. Piston and connection rod should be re-
placed with the new one which has identical
weight and grade with the old one .
a. Measure the inner diameter of cylinder sleeve us-
ing the cylinder gauge (1).
Inner diameter of cylinder sleeve: 104.00~104.03mm
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SUDEM7162L
b. Measure the outer diameter of piston skirt at the
position, which is 85mm down from the upper pis-
ton.
Outer diameter of piston: 103.91~103.92mm
SUDEM7163L