Doosan V158TI Operation & Maintenance Manual page 182

Compo-
Item
nent
Piston pin O.D.
Piston
ring
Clearance between the
piston and bushing
Unevenly worn journal
and pin
Journal O.D.
Pin O.D.
Ovalness of journal and
pin
Allowable concentricity
of journal and pin
Allowable inclination of
Main
journal and pin
drive
Crankshaft and bearing
compon
Crank
clearance
ents
shaft
Crankshaft free play
Deflection of crankshaft
Crankshaft balance
(g.cm)
Tightening torque of
journal bearing
cap bolt (kg.m)
Journal bearing crush
Worn oil seal (Back side
of crankshaft)
Appendix
Inspection item Specifications
Allow-
able
Limit
ø ø
41.994 ~ 42
0.055 ~ 0.071
0.01
ø
83.966 ~
ø
83
ø
83.988
ø
70.971 ~
ø70
ø
70.990
0.008 0.025
0.01 0.03
0.01 0.03
0.052 ~ 0.122 0.25
0.15 ~ 0.325 0.25
↓
0.1
60 or
↓
60
less
30
0.08 ~ 0.110
- 176 -
Repair Remarks
Replace the
piston pin
Replace if the
wear exceeds
the specified
amount
Repair it with a
grinder
Measure in vertical
and horizontal
Use the
directions
undersize
bearing
Each (0.25, 0.5,
0.75, 1.0)
Replace the
Measure on crown
valve spring
Replace the
thrust bearing
Adjust Measure at No. 4
deflection with a (Supporting No. 1
press and 7)
There should be
Apply oil to the no foreign material
bolt on the bearing cap
mounting surface
Tighten the metal
cap and unscrew
one stud bolt for
measurement
Replace the oil
seal if there are
any oil leaks