Doosan P158LE -III, Operation & Maintenance Manual, Page: 75 / 165

Inspection - 72 -
3.2.6. Crankshaft
1) Inspection and measurement
z
Inspect for any scratch or damage
with naked eyes, and grind to the
undersize according to the damaged
degree and use the undersized
bearing.
z
Inspect for any crack by means of
magnetic powder and color check,
and replace the cracked ones.
a) Journal and pin diameter
z
With outside micrometer, measure
the outside diameter of crank
journal and crank pin at the
direction and position of the figure
shown and take the wear.
<Crankshaft journal outside diameter>
<Crankshaft pin outside diameter>
z
In case that the lopsided wear is
more than the limit value, grind to
the undersize, and use the
undersized bearing.
<Kinds of bearings for undersize>
(a) Standard
(b) 0.25 (Inside diameter 0.25 mm less than standard)
(c) 0.50 (Inside diameter 0.50 mm less than standard)
(d) 0.75 (Inside diameter 0.75 mm less than standard)
(e) 1.00 (Inside diameter 1.00 mm less than standard)
Standard 103.98 ~ 104.00 mm
Standard 89.98 ~ 90.00 mm
A
A
B B
EA3M2050
I II
1
1
2
EA0M4017
2
3 4
3 4