Doosan GV158TIC, Operation & Maintenance Manual

Page: 73 / 162

Disassembly and Reassembly of Major Components - 67 -
●
There are 4 kinds as above, and the
crankshaft also can be used by
regrinding as above.
<"R part" standard value >
(a) Crank pin "R part" : 4.0
(b) Crank journal "R part" : 4.0
Note:
In case of crankshaft regrinding, the "R
part" at the end of bearing must
accurately be ground with out fall and
should avoid any processed jaw or
coarse surface.
3) Run out of crankshaft
●
Place the crankshaft on the V-block.
●
Place the dial gauge on the surface
plate and measure the run out of
crankshaft rotating the crankshaft.
4) Inspection on crankshaft bearing and
connecting rod bearing
●
Inspect the crankshaft bearing and
connecting rod bearing for any dam-
ages such as lopsided wear, scratch
etc. and if abnormal, replace it.
●
Inspect the oil clearance between the
crankshaft and bearing.
" R "
" R " " R " " R "
" R "
EFM2048I
Normal Poor Poor
0
-0.5
0
-0.5
Standard Limit
0.06 mm 0.4 mm