Correcting Cylinder - Kubota B2410 Workshop Manual

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B2410· B2710· B2910 WSM, 12271
Correcting Cylinder
1. When the cylinder is worn beyond the allowable limit, bore and
hone it to the specified dimension.
[01105, V1505]
Factory spec.
78.500 to 78.519 mm
Oversized cylinder liner
3.09055 to 3.09129 in.
1.0
78.669 mm
Allowable limit
3.09720 in.
Hone to 1.2 to 2.0 mR max.
Finishing
Y'Y'Y'
(0.000047 to 0.0079 in.R max.)
[V1305]
Factory spec.
76.500 to 76.519 mm
Oversized cylinder liner
3.01181 to 3.01256 in.
1.0.
76.669 mm
Allowable limit
3.0185 in.
Hone to 1.2 to 2.0 mR max.
Finishing Y'Y'Y'
(0.000047 to 0.0079 in.R max.)
2. Replace the piston and piston rings with oversize ones.
[01105, V1505]
Oversize Part Name Code Number Marking
0.25 mm
Piston
16281-21910
0.5 OS
0.0098 in.
Piston ring assembly
16261-21090
0.5 OS
[V1305]
Oversize Part Name Code Number
Marking
0.5mm
Piston 05 16251-21910 05 OS
0.0197 in.
Piston ring 05 assembly 16271-21090 05 OS
• NOTE
• When the oversize cylinder is worn beyond the allowable
limit, replace the cylinder block with a new one.
(1) Cylinder 1.0. (Before Correction) (2) Oversized Cylinder I.D.
12271810220
1-848