Doosan GL08K - Piston Pin Specifications; Crankshaft Specifications

Appendix
- 182 -
(unit : mm)
Group Part Inspection item
Stand value
for assembly
Limit
for use
Correction Remark
Major
moving
parts
Piston
pin
Outer diameter of
piston pin
41.994 ~
42.000
41.94
Replace piston
pin
Clearance between
piston pin and its bush
0.003 ~ 0.015 0.08
Replace one
worn more
Crank
shaft
Radial run
- out of
journal and pin
– 0.01
Correct with a
grinder
Measure In horizontal
and vertical directions
(against axial direction)
Outside diameter of
journal
83.966 ~
83.988
83.466
Under size
bearing (0.25,
0.5)
Outside diameter of pin
70.971 ~
70.990
69.971
Under size
bearing (0.25,
0.5, 0.75, 1.0)
Ellipticity of journal and
pin
0.008 0.025
Concentricity of
journal and pin
0.01 0.03
Taper of journal and pin 0.02 0.03
Run-out of crankshaft 0.1 0.15
Adjust by a
press if bended
Measure at No.4
bearing (No. 1 & 7
bearing supported)
Clearance between
crankshaft and bearing
0.052 ~ 0.122 0.25
Replace
bearings
Measure at crown
part not parting line
End play of crankshaft
0.100 ~ 0.289 0.5
Replace
thrust bearing
Balance of crankshaft
(g.cm)
60 
60 or
less
Check dynamic
balance
Measure at 400 rpm
Torque value Journal
bearing cap bolt (kg.m)
30 –
Coat the bolt
with engine oil
Clean out foreign
objects on joining
surface.
Crush of journal
diameter
0.08 ~ 0.110 –
Measure after
tightening metal cap
and releasing one stud
Oil seal for wear
(crankshaft rear)
– –
Replace oil seal
if oil leaking
Connect
ing rod
End play of con-rod
0.170 ~ 0.248 0.50 Replace con-rod
Clearance between
con-rod bearing
and crank pin
0.034 ~ 0.098 0.25
Replace
bearing
Clearance between
small end bush &
piston pin
0.050 ~ 0.081 0.12
Crush height of
con-rod bearing
0.04 ~ 0.07 –
Measure after
installing the bearing
and releasing one bolt
Side clearance of
big-end and small end
– 0.50 Replace con-rod