Doosan DL06 - Page 75

DL06K Interim Tire-4 Diesel Engine Disassembly and Reassembly of Major Components
73
< Valve depression >
(mm)
< Valve angle >
(mm)
Intake valve (B) Exhaust valve (B)
60° 45°
z Replace the valve seat, if the valve
insertion distance exceeds the limit of
tolerance.
z To disassemble the valve seat,
perform arc welding at two spots on
the valve seat, and take out the valve
seat using the special tool.
(Boring of the bore is needed, when
the valve seat is replaced.)
z To assemble the valve seat, put the valve seat in dry ice for 2 hours for freezing.
Then, push the valve seat into the cylinder heat using the bench press.
z Apply abrasive material on the valve heat contact of the valve seat, and turn the
valve. Then, grind the valve seating surface until the valve is fixed firmly, and
wipe out the abrasive material.
Dimension
Description
standard Limit
Intake valve
(A)
0.35 ~
0.65
0.85
Exhaust valve
(A)
0.35 ~
0.65
0.85
B
A
EE1OM068
Valve
Valve seat
EA3M2032
Valve seat
Cylinder head
Welding bead