Kubota RTV1140CPX, Workshop Manual

Page: 136 / 379

ENGINE
RTV1140CPX, WSM
1-S53
Replacing Crankshaft Sleeve
1. Remove the used crankshaft sleeve.
2. Set the sleeve guide (2) to the crankshaft.
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 (3).
NOTE
• Mount the sleeve with its largely chamfered surface facing
outward.
• If sleeve is not hot enough, it might stop halfway, so be
careful.
9Y1210293ENS0097US0
(5) Cylinder
Cylinder Wear
1. Measure the I.D. of the cylinder 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".)
9Y1210293ENS0098US0
(1) Crankshaft Sleeve
(2) Sleeve Guide (3) Auxiliary Socket for Pushing
(4) Crankshaft
Cylinder I.D.
Factory specification
78.000 to 78.019 mm
3.0709 to 3.0716 in.
Allowable limit
78.15 mm
3.077 in.
(A) Top
(B) Middle
(C) Bottom (Skirt) (a) Right-angled to Piston Pin
(b) Piston Pin Direction
KiSC issued 05, 2014 A