Doosan DL06 - Page 208

DL06K Interim Tire-4 Diesel Engine Appendix
206
Group Part Inspection item
Stand value
for assembly
Limit
for use
Correction Remark
Inner diameter of valve
guide
φ7.000~φ7.015 -
When replacing
valve guide & seat
work simultaneously
by special tools
Valve guide assembly
part’s inner diameter of
cylinder head
φ13.000~
φ13.018
-
Diameter of valve guide
φ13.028~
φ13.039
-
Clearance between
valve guide and cylinder
head installing hole
-0.01 ~ -0.039 -
Spread oil over
valve guide and
press it into the
hole
Concentricity between
valve seat and valve
guide
0.05 -
Without spring
seat
Intake
a
nd
e
xhaust
v
alve
s
pring
Free length
53.4 mm -
Replace valve
spring
T
ension
f
orce
(kg)
39.4mm
28.8 kg ±2 kg
29.67mm
50 kg ±2 kg
Squareness
(along free length
direction)
1.4 mm 2.0
Rocker
arm and
push
rod
Valve clearance
(at cold)
Intake
0.3 -
Adjust
Exhaust
0.4 -
Clearance of engine
brake
1.5 -
Grind or replace
if severely pitted
on tip of rocker
arm and stem
Joining surface of valve
stem and rocker arm bush
- -
 
Inner diameter of rocker
arm bush
φ24.991~
φ25.012
Diameter of rocker arm
shaft
φ24.939~
φ24.960
φ24.90
Clearance between
rocker arm shaft &
rocker arm bush
0.031~0.073 0.14
Replace bush
or shaft
Run-out of push rod
0.25 0.25↓
Replace or correct
Tappet
Tappet assembly part’s
inner diameter of
cylinder block
φ28.010~
φ28.031
-
Diameter of tappet
φ27.962~
φ27.982
-
Replace tappet
Clearance between
tappet & tappet hole of
cylinder block
0.028~0.069 0.13
Replace if severel
y
worn or deformed
Tappet face in contact
with cam
- -
Replace if severel
y
worn or deformed
Lubrica
ting
system
Engine
oil
Oil pressure (at normal
speed) kg/cm
2
3.0~5.5 -
Check oil leakage
and clearance
between each part
-
Oil pressure (idling)
kg/cm
2
1.5~3.0 -
Use
recommended
oil
Oil temperature (°C)
- 105
Must not exceed