Valve spring tension
Use a spring tester to measure the valve spring
tension if the measured value is less than the
specified limit, the valve spring must be replaced.
5) Assembling cylinder head
Clean the cylinder head thoroughly.
Replace the valve stem seal with new one, and by
means of a special tool, press the stem seal into the
valve guide of cylinder head.
Coat engine oil to valve stem and valve guide and
assemble the valve. However, be careful for the damage
of valve stem seal.
Install the lower seat of valve spring to the valve guide
of cylinder head.
After putting inner, outer springs, install the spring
upper seat on it.
Assemble the valve by inserting the valve cotter
pressing the valve spring with a special tool.
After installing the valve, check whether the valve is
correctly installed or not tapping it lightly with urethane
hammer.
SPC000006 5ton Diesel Engine
Page 50
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