Cylinder - Kubota SM-E4B Series Workshop Manual

SM-E4B SERIES, WSM

(5) Cylinder

Replacing Crankshaft Sleeve (Z482-E4B, D722-E4B, D782-E4B)
1. Remove the used crankshaft sleeve (2).
2. Set the sleeve guide (3) to the crankshaft (1).
3. Heat a new sleeve to a temperature between 150 and 200 °C
(302 and 392 °F), and fix the sleeve to the crankshaft as shown
in figure.
4. Press fit the sleeve using the auxiliary socket for pushing (4).
(Refer to "SPECIAL TOOLS".)
NOTE
• Mount the sleeve with its largely chamfered surface facing
outward.
• Should heating is not enough, a sleeve might stop halfway,
so careful.
(1) Crankshaft
(2) Crankshaft Sleeve
Cylinder Wear
1. Measure the cylinder liner I.D. at the six positions (see figure)
with a cylinder gauge to find the maximum and minimum I.D.'s.
2. Get the difference (Maximum wear) between the maximum and
the minimum I.D.'s.
3. If the wear exceeds the allowable limit, bore and hone to the
oversize dimension. (Refer to "Correcting Cylinder".)
4. Visually check the cylinder wall for scratches. If deep scratches
are found, the cylinder should be bored. (Refer to "Correcting
Cylinder".)
Factory
specifica-
tion
Cylinder liner I.D.
Allowable
limit
(A) Top
(B) Middle
(C) Bottom (Skirt)
1-S67
ENGINE
(3) Sleeve Guide
(4) Auxiliary Socket for Pushing
9Y1210785ENS0095US0
Z482-E4B
67.000 to 67.019 mm
D722-E4B
2.6378 to 2.6385 in.
D782-E4B
Z602-E4B 72.000 to 72.019 mm
D902-E4B 2.8347 to 2.8353 in.
Z482-E4B
67.150 mm
D722-E4B
2.6437 in.
D782-E4B
Z602-E4B 72.150 mm
D902-E4B 2.8406 in.
(a) Right-angled to piston pin
(b) Piston pin direction
9Y1210785ENS0096US0
KiSC issued 01, 2013 A