Kubota ME5700, Workshop Manual

Page: 154 / 508

ME5700, WSM ENGINE
1-S60
Cylinder Wear
1. Measure the I.D. of the cylinder at the six positions (see figure)
with a cylinder gauge to find the maximum and minimum I.D.'s.
2. Get the difference (Maximum wear) between the maximum
and the minimum I.D.'s.
3. If the wear exceeds the allowable limit, bore and hone to the
oversize dimension. (Refer to "Correcting Cylinder".)
4. Visually check the cylinder wall for scratches. If deep
scratches are found, the cylinder should be bored. (Refer to
"Correcting Cylinder".)
Correcting Cylinder
1. When the cylinder is worn beyond the allowable limit, bore and
hone it to the specified dimension.
2. Replace the piston and piston rings with oversize ones.
A
When the oversize cylinder is worn beyond the allowable
limit, replace the cylinder block with a new one.
Cylinder Liner I.D. Factory spec.
87.000 to 87.022 mm
3.42519 to 3.42606 in.
Cylinder Liner I.D. Allowable limit
+0.15 mm
+0.0059 in.
A : Top (a) Right-angled to Piston Pin
B : Middle (b) Piston Pin Direction
C : Bottom (Skirt)
0000002523E
Oversize Cylinder I.D. Factory spec.
87.500 to 87.552 mm
3.44488 to 3.44574 in.
Maximum wear Allowable limit
+0.15 mm
+0.0059 in.
Oversize Part Name Code Number Marking
0.5 mm
0.0197 in.
Piston 05 19077-21911 05 OS
Piston ring 05 assembly 17331-21091 05 OS
(1) Cylinder I.D. (2) Oversize Cylinder I.D.
(Before Correction)
0000002524E
KiSC issued 04, 2006 A