9.2. Inspection
9.2.1. Cylinder block
1)Clean the cylinder block thoroughly and check a visual inspection for cracks or damage.
2) Replace if cracked or severely damaged, and correct if slightly damaged.
3) Check the oil and water passing lines for restriction or corrosion.
4) Inspect the cylinder block's camshaft bush to any damage and the alignment of oil supply
holes and if abnormal or severe wears, replace it.
5) Make a hydraulic test to check for any cracks or air leaks.
Hydraulic test :
Stop up each outlet port of water and oil passages in the cylinder block, apply air pressure of
about 5 kg/cm
2
against the inlet ports, then immerse the cylinder block in water for about 1
minute to check any leaks. (Water temperature :70˚C)
9.2.2. Cylinder liner measurement
•
Assemble the cylinder liner at the
cylinder block and measure inner
diameter at upper, middle, lower that
is, 3 steps by 45
O
interval and calculate
the average values after eliminating
the maximum and minimum values.
•
If the measured values are very close
to the limit value or beyond, replace it.
9.2.3. Cylinder Head
•
Carefully remove carbon from the lower face of the cylinder head using nonmetallic material
to prevent scratching of the valve seat faces.
•
Check the entire cylinder head for very fine cracks or damage invisible to ordinary sight
using a hydraulic tester or a magnetic flaw detector.
1) Cylinder head disassembly
NOTE : Be careful for the cylinder head
gasket contacting surface of
cylinder head not to be damaged.
•
Remove the cotter pin pressing the
valve spring by means of a special
tool.
- 76 -
EFM2032I
Liner
Standard
Limit
inner dia.
127.990 ~ 128.010 mm
128.16 mm
Valve spring
compressor
EA0M4007
