Kubota V3300-E2B Workshop Manual page 134

V3300-E2B, V3300-T-E2B, WSM
Oil Clearance between Crankshaft Journal and Crankshaft
Bearing
1. Clean the crankshaft journal and crankshaft bearing.
2. Put a strip of press gauge on the center of the journal.
IMPORTANT
• Never insert the press gauge into the oil hole of the journal.
3. Install the main bearing case and tighten the screws to the
specified torque, and remove the cases again.
4. Measure the amount of the flattening with the scale and get the
oil clearance.
5. If the clearance exceeds the allowable limit, replace the
crankshaft bearing.
Crankshaft journal O.D. Factory spec.
Factory spec.
Oil clearance between
crankshaft journal and
crankshaft bearing
Allowable limit
(Reference)
• Undersize dimensions of crankshaft journal.
0.2 mm
Undersize
0.008 in.
2.8 to 3.2 mm radius
Dimension A
0.1102 to 0.1260 in. radius
1.0 to 1.5 mm relief
*Dimension B
0.0394 to 0.0591 in. relief
74.777 to 74.790 mm dia.
Dimension C
2.9440 to 2.9445 in. dia.
The crankshaft journal must be fine-finished to higher than ∇∇∇∇.
*Holes to be de-burred and edges rounded with 1.0 to 1.5 mm
(0.0394 to 0.0591 in.) relief.
Replacing Crankshaft Sleeve
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 to 200 °C (302
to 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).
NOTE
• Mount the sleeve with its largely chamfered surface facing
outward.
(1) Crankshaft
(2) Crankshaft Sleeve
S-71
DIESEL ENGINE
74.977 to 74.990 mm
2.9518 to 2.9524 in.
0.018 to 0.062 mm
0.0007 to 0.0024 in.
0.20 mm
0.0079 in.
0.4 mm
0.016 in.
2.8 to 3.2 mm radius
0.1102 to 0.1260 in. radius
1.0 to 1.5 mm relief
0.0394 to 0.0591 in. relief
74.577 to 74.590 mm dia.
2.9361 to 2.9366 in. dia.
(0.8S)
W1069159
(3) Sleeve Guide
(4) Auxiliary Socket for Pushing
W1069911
KiSC issued 06, 2006 A