5. Inspection and servicing of basic engine parts
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5. Inspection and servicing of basic engine parts
5.1 Cylinder block
The cylinder block is a thin-skinned, (low-weight), short skirt type with rationally placed ribs. The side
walls are save shaped to maximize rigidity for strength and low noise.
5.1.1 Inspection of parts
Make a visual inspection to check for cracks on engines
that have frozen up, overturned or otherwise been
subjected 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.
5.1.2 Cleaning of oil holes
Clean all oil holes, making sure that none are clogged
up and the cap plugs do not come off.
5.1.3 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
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 300-400 mm away from the area the surface uniformly.
(6) Clean the surface with the cleaner.
NOTE: Without fail, read the instructions for the color check kit before use.
Color check kit
Quantity
Penetrant
1
Developer
2
Cleaner
3
Cap plug 45 mm
(Camshaft hole)
Cap plug
30 mm
Cap plug 25 mm
Cap plug 12 mm
(main gallery)
Cap plug 30 mm
(Camshaft hole)
