Cylinder - Kubota WSM 07-E3B Series Workshop Manual

07-E3B SERIES, WSM

(5) Cylinder

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".)
V2607-DI-E3B
V2607-DI-T-E3B
Cylinder Bore I.D.
V3007-DI-T-E3B
V3307-DI-T-E3B
(A) Top
(B) Middle
(C) Bottom (Skirt)
Correcting Cylinder (Oversize)
1. When the cylinder is worn beyond the allowable limit, bore and
hone it to the specified dimension.
[V2607-DI-E3B / V2607-DI-T-E3B]
Cylinder I.D. (Oversize) Factory spec.
Maximum wear Allowable limit
Hone to 2.2 to 3.0 m Rz
Finishing
(0.000087 to 0.00011 in. Rz) 
2. Replace the piston and piston rings with oversize 0.25 mm
(0.0098 in.) ones.
[V3007-DI-T-E3B / V3307-DI-T-E3B]
Cylinder I.D. (Oversize) Factory spec.
Maximum wear Allowable limit
Hone to 2.2 to 3.0 m Rz
Finishing
(0.000087 to 0.00011 in. Rz) 
2. Replace the piston and piston rings with oversize 0.5 mm (0.02
in.) ones.
NOTE

• When the oversize cylinder is worn beyond the allowable
limit, replace the cylinder block with a new one.
(1) Cylinder I.D. (Before Correction)
S-109
ENGINE
Factory 87.000 to 87.022 mm
spec. 3.4252 to 3.4260 in.
Allowable 87.15 mm
limit 3.431 in.
Factory 94.000 to 94.022 mm
spec. 3.7008 to 3.7016 in.
Allowable 94.15 mm
limit 3.707 in.
(a) Right-angled to piston pin
(b) Piston pin direction
W1070089
87.250 to 87.272 mm
3.4350 to 3.4359 in.
87.40 mm
3.441 in.
94.500 to 94.522 mm
3.7205 to 3.7213 in.
94.65 mm
3.726 in.
(2) Cylinder I.D. (Oversize)
W10344480
KiSC issued 06, 2020 A