Doosan DE08TS - Valve system

DE08TS Diesel Engines Appendix
5. Maintenance specification table (unit : mm)
100
Group Part Inspection Item
Stand value Limit
Correction Remark
for assembly for use
Inside diameter of
Measure unworn
Cylinder liner for wear
N111 ~
N111.122 Replace liner portion beneath the
N111.022
rim of the upper side
Amount of liner
Need amount of Projection difference
Cylinder
projection
0.03 ~ 0.08 - projection without between adjacent
block & fail liners : 0.15
v
l
liner
The flatness of upper
0.05 -
Correct with a Referenced length :
Engine surface of cylinder block surface grinder 200mm
body Hydraulic test for 1
4 Replace if leaky
minute (kg/cm
2
)
Valve seat Intake 0~0.3 0.55 Replace valve
Cylinder depression Exhaust 0~0.3 0.55 seat
head & Cylinder head height 109.9 ~ 110.1 108.4 Replace cyl. head
valve Hydraulic test for 1
4 - Replace if leaky Water temp. 70˚C
minute (kg/cm
2
)
Measure at 13mm
Outer dia. piston
N110.883~
Replace liner away from lower
N110.897
surface of piston
Clearance between
0.103~0.139 0.3
Replace one worn
piston and liner more
Width of Top ring - Replace piston if
Piston piston ring 2nd ring 3.06~3.08 groove width is beyond
grooves Oil ring 4.04~4.06 specified value
Piston projection from Measure unworn
cylinder block upper 0~0.12 Must exist portion beneath the
surface rim of the upper side
Permissible weight
±
15 g 96 g
v
l Replace piston
Major difference of each piston
moving
Piston ring
Top ring 0.40~0.60 1.5 Standard gauge
parts
gap
2nd ring 0.40~0.60 1.5 Replace ring inside diameter :
Oil ring 0.30~0.50 1.5
N
108
Piston Piston ring Top ring - -
Replace ring or Limit for use if for
ring side 2nd ring 0.07~0.102 0.15
piston standard clearance
clearance Oil ring 0.05~0.085 0.15
Direction of ring gap - -
Cross Install by
120˚
Outer diameter of piston
N
41.994 ~
N
42 41.94 Replace piston pin
Piston pin
pin Clearance between
0.003 ~ 0.015 0.08
Replace one worn
piston pin and its bush more