Doosan DL06 - Page 206

DL06K Interim Tire-4 Diesel Engine Appendix
204
(Unit : mm)
Group Part Inspection item
Stand value
for assembly
Limit
for use
Correction Remark
Major
moving
parts
Crank
shaft
Radial run-out of
journal and pin
- 0.01
Correct with a
grinder
Horizontal and
vertical directions
Outside diameter of
journal
φ79.905~
φ79.925
φ78.905
Use under
sized bearings
respectively
(0.25, 0.5,
0.75, 1.0)
Outside diameter of pin
φ68.924~
φ68.944
φ67.924
With of thrust journal
33.99 ~ 34.03 33.94
Ellipticity of journal and
pin
0.007 0.025
Concentricity of journal
and pin
0.01 0.03
Taper of journal and pin
0.02 0.03
Run-out of crankshaft
0.06↓ 0.15↓
Adjust by a
press
Measure #4 journal
(journal #1, #7
support)
Clearance between
crankshaft and bearing
0.045~0.110 0.15
Replace
bearings
Measure at crown
part
End play of crankshaft
0.14~0.33 0.4
Replace thrust
bearing
Measure at
crown part
Balance of Crankshaft
(g.cm)
60 ↓
Under
60
Check dynamic
balance
Measure at 400
rpm
Torque of Journal bearing
cap bolt (kg.m)
302
-
Coat the bolt
with engine oil
Clean out foreign
objects on joining
surface
Crush of journal
diameter
0.065~0.105 -
Measure after
tightening metal
cap and releasing
one bolt
Oil seal for wear (crank
shaft rear)
- -
Replace oil seal
if oil leaking
Conne
cting
rod
Inner diameter of small-
end
φ40.03~
φ40.04
-
Inner diameter of big-
end
φ73.000~
φ73.015
-
End play of con-rod
0.170~0.30 0.50
Clearance between con-
rod bearing and crank pin
0.03~0.081 0.15
Replace
bearing
Clearance between small
end bush & piston pin
0.04~0.056 0.08
Replace con-
rod
Crush height of con-rod
bearing
0.085~0.125 -
Measure after
installing the
bearing and
releasing one bolt
Perpendicularity of big-
end inner diameter
0.05 0.1
Roundness of big-end
inner diameter
0.007 0.25
Parallelness of small end
side and big end
0.2 0.50
Replace con-
rod.
Allowable weight
difference per con-rods
10g ↓ -
Replace same
degree
Management of
con-rod’s grade
(A ~I)
Con-rod bearing cap bolt
(kg.m)
9.75+0.25 -
Coat the bolt
with engine oil
Clean out foreign
objects on joining
surface.
Cam
shaft
Inner diameter of hall of
cylinder block camshaft
φ56.000~
φ56.030
-