Doosan PU086T User Manual

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Maintenance specification table
- 171 -
Group Part Inspection Item
Stand value Limit
Correction Remark
for assembly for use
Inside diameter of
111~ 111.022
111.222
Replace liner -
cylinder liner for wear
(limit 0.2)
Amount of liner
Need amount of Projection difference
Cylinder
projection
0.03~0.08 projection without between adjacent
block & fail liners : 0.15
v
l
liner
The flatness of upper
0.05/200
Correct with a Referenced length :
Engine surface of cylinder block surface grinder 200mm
body Hydraulic test for 1
4 Replace if leaky
minute (kg/cm
2
)
Valve seat Intake 0~0.3 - Replace valve
Cylinder depression Exhaust 0~0.3 - seat
head & Cylinder head height 109.9 ~110.1 108.4 Replace cyl. head
valve Hydraulic test for 1
4 Replace if leaky Water temp. 70˚C
minute (kg/cm
2
)
Measure at 13mm
Outer dia. piston
110.801~
Replace liner away from lower
110.959
surface of piston
Clearance between
0.041~0.221 0.3
Replace one worn
piston and liner more
Width of Top ring 3.50 Replace piston if
Piston piston ring 2nd ring 3.06~3.08 groove width is beyond
grooves Oil ring 4.04~4.06 specified value
Piston projection from Measure unworn
cylinder block upper 0~0.12 Must exist portion beneath the
surface rim of the upper side
Permissible weight
±
15 g 96 g
v
l Replace piston
Major difference of each piston
moving
Piston ring
Top ring 0.40~0.65 1.5 Standard gauge
parts
gap
2nd ring 0.40~0.65 1.5 Replace ring inside diameter :
Oil ring 0.30~0.60 1.5 108
Piston Piston ring Top ring
Replace ring or Limit for use if for
ring side 2nd ring 0.07~0.102 0.15
piston standard clearance
clearance Oil ring 0.05~0.085 0.15
Direction of ring gap
Cross Install by
120˚C
Outer diameter of piston
41.994~ 42
Replace piston pin
Piston pin
pin Clearance between
0.009~0.015
Replace one worn
piston pin and its bush more

Doosan PU086T Specifications

General

Brand	Doosan
Model	PU086T
Category	Engine
Language	English