Crankshaft - Kubota D1503-M-DI Workshop Manual

03-M-DI Series, WSM

(4) Crankshaft

Side Clearance of Crankshaft
1. Move the crankshaft to the flywheel side.
2. Set a dial indicator to the crankshaft.
3. Measure the end play by pulling the crankshaft toward the crank
gear.
4. If the measurement exceeds the allowable limit, replace the
thrust bearing 1 and 2.
(Serial No : below 3R9999)
Factory
spec.
Crankshaft side
clearance
Allowable limit
(Serial No : above 3S0001)
Factory spec.
Crankshaft side
clearance
Allowable limit
(Reference)
• Oversize dimensions of crankshaft journal
Oversize
0.2 mm
0.008 in.
Dimension
26.20 to 26.25 mm
A
1.0315 to 1.0335 in.
54.5 to 54.7 mm
B
2.1456 to 2.1535 in.
2.8 to 3.2 mm radius
C
0.1102 to 0.1260 in. radius
The crankshaft journal must be fine-finished to higher than ∇∇∇∇
Crankshaft Alignment
1. Support the crankshaft with V blocks on the surface plate and set
a dial indicator with its tip on the intermediate journal at right
angle.
2. Rotate the crankshaft on the V blocks and get the misalignment
(half of the measurement).
3. If the misalignment exceeds the allowable limit, replace the
crankshaft.
Crankshaft alignment Allowable limit
S-73
DIESEL ENGINE
D1503-M-DI
D1503-M-DI-T 0.15 to 0.35 mm
D1703-M-DI 0.0059 to 0.0138 in.
V2203-M-DI
D1803-M-DI 0.15 to 0.31 mm
V2403-M-DI 0.0059 to 0.0122 in.
0.5 mm
0.0197 in.
0.15 to 0.31 mm
0.0059 to 0.0122 in.
0.5 mm
0.0197 in.
0.4 mm
0.016 in.
26.40 to 26.45 mm
1.0394 to 1.0413 in.
54.6 to 54.8 mm
2.1496 to 2.1574 in.
2.8 to 3.2 mm radius
0.1102 to 0.1260 in. radius
(0.4-S)
0.02 mm
0.00079 in.
KiSC issued 10, 2009 A
W1032880
W1033001