Komatsu 170-3 Series, Руководство по ремонту, Страница: 427 / 454

170-3 SERIES
15-21
REPAIR AND REPLACEMENT OF PARTS
3. Checking and distinguishing after grinding
and correcting
After grinding and correcting, check for scratches
on the flat surface around the water and oil holes
in the cylinder block top surface.
Remove all burrs completely.
After grinding the top surface, if the cylinder
block height H exceeds the standard dimension,
but is within the repair limit (488.56
–
488.96
mm), always use an oversize head gasket.
a
Oversize head gasket part number:
6240
-
19
-
1810
Thickness of plate: 2.4mm
(standard: 2.0mm)
a
To distinguish, the letters "OS" are stamped
on the plate.
After correcting, stamp the top surface of the cyl-
inder block a according to the content of the cor-
rection as shown in the table below.
a
The arrow in the figure indicates the flywheel
side of the cylinder block.
Talbe of letters to stamp
(Size of letters: 5
–
10mm)
Oversize
head gaske
Shim Stamp
P
a
rt
s
us
ed
for c
o
rrec
tio
n
– – Not needed
Q
– OS
–
Q
SH
Q Q
WS
(7)
GRINDING THE TOP SURFACE OF CYLINDER BLOCK
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