Kubota SM-E4B Series User Manual

ENGINE
SM-E4B SERIES, WSM
1-S60
Connecting Rod Alignment
NOTE
• Since the I.D. of the connecting rod small end bushing is
the basis of this check, check bushing for wear
beforehand.
1. Install the piston pin into the connecting rod.
2. Install the connecting rod on the connecting rod alignment tool.
3. Put a gauge over the piston pin, and move it against the face
plate.
4. If the gauge does not fit squarely against the face plate,
measure the space between the pin of the gauge and the face
plate.
5. If the measurement exceeds the allowable limit, replace the
connecting rod.
9Y1210785ENS0086US0
Piston Ring Gap
1. Insert the piston ring into the lower part of the cylinder (the least
worn out part) with a piston ring compressor and piston.
2. Measure the ring gap with a feeler gauge.
3. If the measurement exceeds the allowable limit, replace the
piston ring.
9Y1210785ENS0087US0
Connecting rod
alignment
Allowable limit
0.05 mm
0.002 in.
Piston ring gap
[Z482-E4B]
[D722-E4B]
[D782-E4B]
Top ring
Factory
specifica-
tion
0.12 to 0.27 mm
0.0047 to 0.010 in.
Allowable
limit
1.15 mm
0.0453 in.
Second
ring
Factory
specifica-
tion
0.30 to 0.45 mm
0.012 to 0.017 in.
Allowable
limit
1.20 mm
0.0472 in.
Oil ring
Factory
specifica-
tion
0.15 to 0.35 mm
0.0059 to 0.013 in.
Allowable
limit
1.20 mm
0.0472 in.
Piston ring gap
[Z602-E4B]
[D902-E4B]
Top ring
Factory
specifica-
tion
0.15 to 0.30 mm
0.0059 to 0.011 in.
Allowable
limit
1.25 mm
0.0472 in.
Second
ring
Factory
specifica-
tion
0.35 to 0.50 mm
0.014 to 0.019 in.
Allowable
limit
1.25 mm
0.0492 in.
Oil ring
Factory
specifica-
tion
0.15 to 0.35 mm
0.0059 to 0.013 in.
Allowable
limit
1.20 mm
0.0472 in.
KiSC issued 01, 2013 A

Kubota SM-E4B Series Specifications

General

Brand	Kubota
Model	SM-E4B Series
Category	Engine
Language	English