S-90
03-M-E3B, 03-M-DI-E3B, 03-M-E3BG WSM
DIESEL ENGINE
(4) Crankshaft
Side Clearance of Crankshaft
1. Set a dial indicator with its tip on the end of the crankshaft.
2. Measure the side clearance by moving the crankshaft to the front
and rear.
3. If the measurement exceeds the allowable limit, replace the
thrust bearings.
4. If the same size bearing is useless because of the crankshaft
journal wear, replace it with an oversize one referring to the table
and figure.
(Reference)
• Oversize dimensions of crankshaft journal
W1032880
Crankshaft Alignment
1. Support the crankshaft with V blocks on the surface plate at both
end journals.
2. Set a dial indicator with its tip on the intermediate journal.
3. Measure the crankshaft alignment.
4. If the measurement exceeds the allowable limit, replace the
crankshaft.
W1033001
Crankshaft side
clearance
Factory spec.
0.15 to 0.31 mm
0.0059 to 0.012 in.
Allowable limit
0.5 mm
0.02 in.
Oversize
0.2 mm
0.008 in.
0.4 mm
0.02 in.
Dimension A
54.50 to 54.70 mm
2.146 to 2.153 in.
54.60 to 54.80 mm
2.150 to 2.157 in.
Dimension B
26.20 to 26.25 mm
1.032 to 1.033 in.
26.40 to 26.45 mm
1.040 to 1.041 in.
Dimension C
2.8 to 3.2 mm radius
0.11 to 0.12 in. radius
2.8 to 3.2 mm radius
0.11 to 0.12 in. radius
(0.4S)
The crankshaft journal must be fine-finished to higher than ∇∇∇∇
Crankshaft alignment Allowable limit
0.02 mm
0.0008 in.
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