Doosan GL08K - Tappet Specifications

Appendix
- 184 -
(unit : mm)
Group Part Inspection Item
Stand value
for assembly
Limit
for use
Correction Remark
Valve
system
Valve
Intake
valve
spring
Free length (mm) Approx. 64 –
Replace
valve spring
Tension force (when
pressed to 41mm)kg
67 ~ 73 66.5
Squareness
(along free length
direction)
1.5 –
Exhaust
valve
spring
Inner
Free length(mm) 60 –
Replace
valve spring
Tension
force(when
pressed to
38mm)kg
26.9 ~ 30.3 –
Squreness
(along free
length direction)
1.5 –
Outer
Free length
71 –
Replace
valve spring
Tension
force(when
pressed to
41mm)kg
62.7 ~ 69.3 –
Squreness
(along free
length direction)
1.5 –
Valve clearance
(at cold)
Intake 0.3 –
Adjust
Exhaust 0.3 –
Joining surface of valve
stem and rocker arm bush
––
Grind or
replace if
severely
pitted on tip
of rocker arm
and stem
Clearance between rocker arm
shaft & rocker arm bush
0.040 ~ 0.113 0.226
Replace
bush or shaft
Diameter of rocker arm
shaft for wear
23.939 ~
23.960
23.9 Replace
Run-out of push rod
– 0.3 Replace
Tappet
Clearance between tappet &
tappet hole of cyl. block
0.035 ~ 0.077 0.15
Replace
tappet
Diameter of tappet
19.944 ~
19.965
–
Replace
tappet
Tappet face in
contact with cam
– –
Replace if
severely
worn or
deformed