Kubota D902-E2B - Cylinder Wear; Replacing Crankshaft Sleeve (Z482-E2 B, D662-E2 B, D722-E2 B, D782-E2 B)

S-70
SM-E2B SERIES, WSM
DIESEL ENGINE
Replacing Crankshaft Sleeve (Z482-E2B, D662-E2B, D722-E2B,
D782-E2B)
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.
W1048540
(5) Cylinder
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”.)
W10360060
(1) Crankshaft
(2) Crankshaft Sleeve
(3) Sleeve Guide
(4) Auxiliary Socket for Pushing
Cylinder liner I.D.
Factory
spec.
D662-E2B
64.000 to 64.019 mm
2.51968 to 2.52043 in.
Z482-E2B
D722-E2B
D782-E2B
67.000 to 67.019 mm
2.63779 to 2.63854 in.
Z602-E2B
D902-E2B
72.000 to 72.019 mm
2.83464 to 2.83539 in.
Allowable
limit
D662-E2B
64.150 mm
2.52559 in.
Z482-E2B
D722-E2B
D782-E2B
67.150 mm
2.64370 in.
Z602-E2B
D902-E2B
72.150 mm
2.84055 in.
(A) Top
(B) Middle
(C) Bottom (Skirt)
(a) Right-angled to Piston Pin
(b) Piston Pin Direction
KiSC issued 06, 2006 A