Kubota WSM ZD321 User Manual

1-S64
ZD321, ZD326, ZD331, WSM
ENGINE
Oil Clearance between Piston 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 allowable limit, replace the piston
pin.
[D782-E2-ZD]
[D1005-E2-ZD, D1305-E3-ZD]
W10305740
Oil clearance between
piston pin and small end
bushing
Factory spec.
0.014 to 0.038 mm
0.00055 to 0.0014 in.
Allowable limit
0.10 mm
0.0039 in.
Piston pin O.D. Factory spec.
20.002 to 20.011 mm
0.78748 to 0.78783 in.
Small end bushing I.D. Factory spec.
20.025 to 20.040 mm
0.78839 to 0.78898 in.
Oil clearance between
piston pin and small end
bushing
Factory spec.
0.014 to 0.038 mm
0.00055 to 0.0014 in.
Allowable limit
0.15 mm
0.0059 in.
Piston pin O.D. Factory spec.
22.002 to 22.011 mm
0.86622 to 0.86657 in.
Small end bushing I.D. Factory spec.
22.025 to 22.040 mm
0.86713 to 0.86771 in.
KiSC issued 04, 2007 A

Kubota WSM ZD321 Specifications

General

Fuel Type	Diesel
Engine Type	Diesel
Transmission	Hydrostatic
Cutting Width	60 inches
Type	Zero-Turn Mower
Turning Radius	Zero turn