Doosan GL08K, Operation & Maintenance Manual

Page: 189 / 206

Appendix - 183 -
(unit : mm)
Group Part Inspection item
Stand value
for assembly
Limit
for use
Correction Remark
Major
moving
parts
Connect
ing rod
Torque
value of
connecting
rod bolt
(kg.m)
1st step 4 kg.m –
Do not apply
engine oil to
bolts Clean out foreign
objects on joining
surface
2nd step 60°
Allowable weight
difference per con-rods
30g

–
Cam
shaft
Diameter of cam shaft
journal
57.860 ~ 57.880 57.57
Clearance between
camshaft and cam
bush
0.06 ~ 0.115 0.23
Replace cam
bush
End play of camshaft 0.25 ~ 0.43 0.5
Replace thrust
washer
Run-out of camshaft 0.05 0.15
Correct or replace
the camshaft
Timing
gear
Clearance between idle
shaft bush and idle shaft
0.025 ~ 0.091 0.15
End play of idle gear
shaft
0.043 ~ 0.167 0.3
Replace thrust
collar
Back-lash between
gears(cam, idle, crank
and injection pump)
0.16~0.28 0.35
Correct or
replace gear
Valve
system
Valve
Diameter of intake
valve stem
8.950 ~ 8.970 8.92
Replace Valve &
valve guide
When replacing
valve, replace
valve guide alike
Diameter of exhaust
valve stem
8.935 ~ 8.955 8.895
Clearance
between
valve stem
and valve
guide
Intake 0.04 ~ 0.07 0.1
Replace
valve & guide
Replace one
worn more
Exhaust 0.06 ~ 0.09 0.15
Thickness of
valve head
Intake 2.7 2.2
Replace valve
Exhaust 2.2 1.7
Clearance
between
valve guide
and valve
spring seat
Intake 2.0 –
Exhaust 2.0 –
Clearance between
valve guide and cyl.
head installing hole
-0.039 ~ -0.010
(Press fit)
Spread oil over
valve guide and
press it into the
hole
Concentricity between
valve stem and valve
head
0.05
Without spring
seat