Kubota WSM J Series Workshop Manual page 133

J SERIES, WSM
(C) Piston and Connecting Rod
Piston Pin Bore I.D.
1. Measure the piston pin bore I.D. in both the horizontal and
vertical directions with a cylinder gauge.
2. If the measurement exceeds the allowable limit, replace the
piston.
[Z482, D722]
Factory spec.
Piston pin bore I.D.
Allowable limit
[D1005, V1305]
Factory spec.
Piston pin bore I.D.
Allowable limit
Oil Clearance between Piton Pin and Small End Bushing
1. Measure the piston pin O.D. where it contacts the bushing with
an outside micrometer.
2. Measure the small end bushing I.D. with an inside micrometer,
and calculate the oil clearance.
3. If the oil clearance exceeds the allowable limit, replace the
bushing. If it still exceeds the limit, replace the piston pin.
[Z482, D722]
Factory spec.
Oil clearance between
piston pin and small end
bushing
Allowable limit
Piston pin O.D. Factory spec.
Small end bushing I.D. Factory spec.
[D1005, V1305]
Factory spec.
Oil clearance between
piston pin and small end
bushing.
Allowable limit
Piston pin O.D. Factory spec.
Small end bushing I.D. Factory spec.
S-87
ENGINE
20.000 to 20.013 mm
0.78740 to 0.78791 in.
20.05 mm
0.7894 in.
22.000 to 22.013 mm
0.86614 to 0.86665 in.
22.05 mm
0.8681 in.
W11406200
0.014 to 0.038 mm
0.00055 to 0.00150 in.
0.10 mm
0.0039 in.
20.002 to 20.011 mm
0.78748 to 0.78783 in.
20.025 to 20.040 mm
0.78839 to 0.78897 in.
0.014 to 0.038 mm
0.00055 to 0.00150 in.
0.15 mm
0.0059 in.
22.002 to 22.011 mm
0.86622 to 0.86657 in.
22.025 to 22.040 mm
0.86713 to 0.86771 in.
W11420110
KiSC issued 10, 2016 A