Doosan GV158TIC, Руководство по эксплуатации и техническому обслуживанию

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Disassembly and Reassembly of Major Components - 66 -
3.2.12. Crank shaft
1) Inspection and measurement
●
Inspect for any scratch or damage
with naked eyes, and grind to the
undersize according to the damaged
degree and use the undersized bear-
ing.
●
Inspect for any crack by means of
magnetic powder and color check,
and replace the cracked ones.
2) Journal and pin diameter
●
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>
●
In case that the lopsided wear is more
than the limit value, grind to the under
size, and use the undersized bearing.
<Main bearing >
(a) Standard
(b) 0.10 (Inside diameter 0.10 mm less than standard)
(c) 0.25 (Inside diameter 0.25 mm less than standard)
(d) 0.50 (Inside diameter 0.50 mm less than standard)
(e) 0.75 (Inside diameter 0.75 mm less than standard)
(f) 1.00 (Inside diameter 1.00 mm less than standard)
<Connecting rod bearing >
(a) Standard
(b) 0.25 (Inside diameter 0.25 mm less than standard)
(c) 0.50 (Inside diameter 0.50 mm less than standard)
A
A
B B
EA3M2050
Standard ø103.98 ~ ø104.00 mm
1
1
2
EA0M4017
2
3 4
3 4
Standard
ø89.98 ~ ø90.00 mm