Doosan PU086T User Manual

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Group Part Inspection Item
Stand value Limit
Correction Remark
for assembly for use
Diameter of intake valve
8.950~ 8.970 0.02
When replacing
stem Replace valve &
valve, replace
Diameter of
8.935~ 8.955 0.02
valve guide
valve guide alike
exhaust valve stem
Clearance
between valve
Intake 0.030~0.065 0.15
Replace valve & Replace one worn
stem and
Exhaust 0.045~0.080 0.15
valve guide more
valve guide
Thickness Intake 2.7
Max. 1 Replace valve
of valve head Exhaust 2.2
Clearance
between valve
Intake 1.0
guide and valve
Exhaust 1.0
spring seat
Clearance between valve
-0.039~-0.010
Spread oil over
guide and cyl. head
(Press fit)
valve guide and
installing hole press it into the hole
Concentricity between
valve stem and valve 0.15 Without spring seat
head
Free length Approx.64
Valve
Tension force
Intake (when pressed 67.9~72.1 66.5 Replace
valve to 41mm)kg valve spring
spring
Squareness
(along free 2.5°
Valve
length direction)
system Free length Approx.60
Tension
force(when
26.9~30.3 -
Replace
pressed to valve spring
38mm)kg
Squreness
(along free
2.5°C
Exhaust length
valve direction)
spring Free length Approx. 71
Tension
force(when
62.7~69.3 -
Replace
pressed to valve spring
41mm)kg
Squreness
(along free
2.5°C -
length
direction)
Valve
Intake 0.3
clearance Adjust
(at cold)
Exhaust 0.3
Joining surface of valve
Grind or replace if
stem and rocker arm
severely pitted on
bush
tip of rocker arm
and stem
Clearance between
rocker arm shaft & 0.020~0.093 0.3
Replace bush
rocker arm bush
or shaft
Diameter of rocker arm 23.939~
23.75 Replace
shaft for wear 23.96
Run-out of push rod - 0.3 Replace
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Doosan PU086T Specifications

General

Brand	Doosan
Model	PU086T
Category	Engine
Language	English