Doosan DL06 - Engine Assembly Tolerance

DL06K Interim Tire-4 Diesel Engine Appendix
202
z Engine assembly tolerance
(unit : mm)
Group Part Inspection item
Stand value
for
assembly
Limit
for use
Correction Remark
Cylinder
block
Cylinder
block &
liner
Inside diameter of
cylinder liner
φ104.9~φ105.1 φ104.4 Replace liner
Measure unworn
portion beneath the
rim of the upper side
Amount of liner
projection
0.03 ~ 0.08 -
From top of
cylinder
The flatness of upper
surface of cylinder
block
0.08 -
Correct with a
surface grinder
Referenced length
200mm
Hydraulic test for 1
Minute (kg/cm
2
)
4 - Replace if leaky
Cylinder
head &
valve
Valve seat
depression
Intake
0.35 ~ 0.65 0.85
Replace valve seat
Depression of valve
from lower face of
cylinder head
Exhaust 0.35 ~ 0.65 0.85
Cylinder head height 104.9~105.1 104.4
Replace cylinder
head
The flatness of lower
surface of cylinder
head
0.15 0.3
Replace cylinder
head
Thick of cylinder
head gasket(at
assembly status)
1.215~1.285 -
Hydraulic test for 1
minute (bar)
4 - Replace if leaky
Water temperature
70°C
Major
moving
parts
Piston
Outer diameter of
piston
φ99.93~
φ99.952
- Replace liner
Measure at 8 mm
away from piston
head(long diameter)
Clearance between
piston and liner
0.079~0.101 0.3
Replace one worn
more
Inner diameter of
piston pin
φ40.008~
φ40.014
-
Width of
piston
ring
grooves
Top ring
- -
Replace piston if
groove width is
beyond specified
Measure at φ100
mm of top ring
groove
2nd ring 2.54~2.56 -
Oil ring 4.02~4.04 -
Piston projection
from cylinder block
upper surface
0.206~0.558 -
Measure unworn
portion beneath
the rim of the
upper side
Permissible weight
difference of each
piston
30g 30g↓ Replace piston
Piston
ring
Width of
piston
ring
Top ring
- -
Replace ring
2nd ring 2.47~2.49 -
Oil ring 3.97~3.99 -
Piston ring
gap
Top ring 3.97~3.99 1.5
Replace ring
Standard gauge
inside diameter:
φ100
2nd ring 0.60~0.80 1.5
Oil ring 0.25~0.45 1.5