Piston And Connecting Rod - Kubota B2301 Workshop Manual

B2301, B2601, WSM

(3) Piston and Connecting Rod

Oil Clearance of Camshaft Journal
1. Measure the camshaft journal O.D. with an outside micrometer.
2. Measure the cylinder block bore I.D. for camshaft with a cylinder
gauge, and calculate the oil clearance.
3. If the oil clearance exceeds the allowable limit, replace the
camshaft.
Factory specification
Oil clearance of
camshaft journal
Allowable limit
Camshaft journal O.D. Factory specification
Camshaft bearing I.D.
Factory specification
(Cylinder block bore I.D.)
Replacing Idle Gear Bushing
(When removing)
1. Press out the used idle gear bushing using an idle gear bushing
replacing tool. (See page "SPECIAL TOOLS".)
(When installing)
1. Clean a new idle gear bushing and idle gear bore, and apply
engine oil to them.
2. Press in a new bushing using an idle gear bushing replacing
tool, until it is flush with the end of the idle gear.
(A) When Removing
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.
Factory specification
Piston pin bore I.D.
Allowable limit
1-S44
ENGINE
0.050 to 0.091 mm
0.0020 to 0.0035 in.
0.15 mm
0.0059 in.
35.934 to 35.950 mm
1.4147 to 1.4153 in.
36.000 to 36.025 mm
1.4173 to 1.4183 in.
9Y1211156ENS0073US0
(B) When Installing
9Y1211156ENS0074US0
22.000 to 22.013 mm
0.86615 to 0.86665 in.
22.03 mm
0.8673 in.
9Y1211156ENS0075US0
KiSC issued 11, 2014 A