Piston And Connecting Rod - Kubota SM-E3B Series Workshop Manual

SM-E3B SERIES WSM

(3) Piston and Connecting Rod

Oil Clearance between Idle Gear Shaft and Idle Gear Bushing
1. Measure the idle gear shaft O.D. with an outside micrometer.
2. Measure the idle gear bushing I.D. with an inside micrometer,
and calculate the oil clearance.
3. If the oil clearance exceeds the allowable limit, replace the
bushing.
4. If it still exceeds the allowable limit, replace the idle gear shaft.
Factory spec.
Oil clearance between
idle gear shaft and idle
gear bushing
Allowable limit
Idle gear shaft O.D. Factory spec.
Idle gear bushing I.D. Factory spec.
Replacing Idle Gear Bushing
(When removing)
1. Press out the used idle gear bushing using an idle gear bushing
replacing tool. (Refer to "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 brushing 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 spec.
Piston pin bore I.D.
Allowable limit
S-61
DIESEL ENGINE
0.020 to 0.084 mm
0.00079 to 0.0033 in.
0.10 mm
0.0039 in.
19.967 to 19.980 mm
0.78611 to 0.78661 in.
20.000 to 20.051 mm
0.78741 to 0.78940 in.
W11356150
(B) When Installing
W11373220
20.000 to 20.013 mm
0.78741 to 0.78791 in.
20.05 mm
0.7894 in.
W11406200
KiSC issued 03, 2011 A