3.2 Inspection and Measurement on Major Parts
3.2.1 Cylinder block
Clean the cylinder block thoroughly, and check for any
crack or damage.
If there is any crack or severe damage, replace it and if
there is minor one, correct it.
Check for any clogging or corrosion in the oil passage
and water passage.
Carry out a leakage test for any crack or air leaking.
(Hydraulic test)
Plug each cylinder block‘s water and oil discharge ports,
and apply the air pressure of about 4kg/cm2 to intake
port and soak it in water for about 1 minute to check if
there is any leakage. (Water temperature: 70°C)
3.2.2 Cylinder head
1) Cylinder head assembly & disassembly
(1) Disassemble the cylinder assembly, and put it on the
shelf for assembly or clean lathe.
Caution:
Prevent any damage to gasket’s contact surface of
the cylinder head.
(2) Disassemble the cotter pin, spring, spring seat
pushing valve spring by a special tool.
(3) Pull out the intake and exhaust valves.
(4) The disassembled parts are kept laid in turn.
(5) Disassemble the valve stem seal.
(6) By means of the special tool, punch, pull out a valve
guide.
5ton Diesel Engine SPC000006
Page 45
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