Yanmar 4JH4E - 5 Inspection and Servicing of Basic Engine Parts; Cylinder Block; Inspection of Parts; Cleaning of Oil Holes

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.
Color check kit
Quantity
Penetrant 1
Developer 2
Cleaner 3
Cap plug 50 mm
(Camshaft hole)
Cap plug 30 mm
Cap plug 30 mm
Cap plug 12 mm
(main gallery)
010361-00E
000996-00X