Chapter 2 Basic Engine
2. Cylinder Block
,
4LHA Sen
2.
Cylinder
Block
The cylinder block is a thin-skinned, (low-weight),
short skirt type
with
rationally placed ribs. The side
walls are wave-shaped to maximize
rigidity
for
strength and low noise.
2-1
Inspection
of
parts
Make
a visual inspection to check for cracks on engines
that
have frozen up, overturned or otherwise been subject-
ed to undue stress. Perform a color check on any portions
that
appear to be cracked, and replace the cylinder block if
the crack is not repairable.
2-2
Cleaning
of oii
holes
Clean
all oil holes, making sure
that
none are clogged up
and the blind plugs do not come off.
Color
check kit
Part code No. 97550-004560
Quantity
Penetrant 1
Developer
2
Cleaner
3
2-3 Color
check
procedure
(1)
Clean
the area to be inspected.
(2) Color check kit
The color check test kit consists of an aerosol cleaner,
penetrant and developer.
(3)
Clean
the area to be inspected
with
the cleaner.
Either spray the cleaner on directly and. wipe, or wipe
the area
with
a cloth moistened
with
cleaner.
(4) Spray on red penetrant
After cleaning, spray on the red penetrant and allow
5
~ 10 minutes for penetration. Spray on more red
penetrant if it dries before it has been able to penetrate.
(5) Spray on developer
Remove
any residual penetrant on the surface after the
penetrant has penetrated, and spray on the developer.
If there are any cracks in the surface, red dots or a red
line
will
appear several minutes after the developer
dries.
Hold the developer 300 ~ 400mm (11.8110 ~ 15.7480in.)
away
from
the area being inspected when spraying,
making sure to coat the surface uniformly.
(6)
Clean
the surface
with
the cleaner.
NOTE: Be sure to read the instructions for the color
check kit before use.
2-9
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