DL06K Interim Tire-4 Diesel Engine Disassembly and Reassembly of Major Components
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2) Valve guide
z Put the valve in the cylinder head, and
measure the valve guide and valve
clearance with valve movement. If the
clearance is big, measure the valve,
and replace the valve or valve guide,
which is more worn-out.
< Valve stem clearance >
(mm)
Dimension
Description
Standard Limit
Intake valve
0.023 ~
0.052
0.1
Exhaust valve
0.036 ~
0.065
0.15
z Assemble the valve to cylinder head’s valve guide and see if it is centered with
the valve seat using a special tool.
3) Valve seat
z Contact frequency of the contact
surface. Measure height of the
contact surface with the intake and
exhaust valve to check abrasion of
the valve seat. If the measurement
value is over the limit of tolerance,
replace the valve seat.
z Put the valve into the valve seat of the
cylinder head, and measure the distance
of valve insertion into the cylinder head
bottom, using the dial gauge.
EA0M4052
Measuring
point
EE1OM067
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