Doosan PU086T User Manual

- 172 -
Group Part Inspection Item
Stand value Limit
Correction Remark
for assembly for use
Radial run-out of journal
0.01
Correct Measure In horizontal
and pin with a grinder and vertical directions
Outside diameter of 83.966~
83
Use under sized
journal 83.988 bearings
Outside diameter of pin
70.971~
70
respectively(0.25,
70.990 0.5, 0.75, 1.0)
Ellipticity of journal
0.008 0.025
and pin
Concentricity of journal
0.01 0.03
and pin
Taper of journal and pin 0.01 0.03
Clearance between
0.052~0.122 0.25
Replace bearing Measure at crown
Crank crankshaft and bearing part not parting line
shaft
End play of crankshaft 0.15~0.325 0.5
Replace
thrust bearing
Adjust by a press
Measure at No.4
Run-out of crankshaft 0.1
v
l
if bended
bearing(No. 1 & 7
bearing supported)
Balance of
60
v
l
60 or Check dynamic Measure
crankshaft(g
.
cm) less balance at 400 rpm
Torque valve journal
Coat the bolt with
Clean out foreign
bearing cap bolt 30
engine oil
objects on joining
(kg
.
m) surface
Crush height of journal
Measure after
bearing
0.08~0.110 tightening metal cap
and releasing one stud
Oil seal for wear(crank Replace oil seal
Major shaft rear) if oil leaking
moving End play of con-rod 0.170 ~ 0.248 0.50 Replace con-rod
parts Clearance between con-
rod bearing and crank 0.034 ~ 0.098 0.25 Replace bearing
pin
Clearance between Measure after
small end bush & 0.050~0.081 0.12 installing the bearing
piston pin and releasing one bolt
Connec-
Crush height of con-rod
After completing of
ting rod
bearing
0.30~0.50 bearing loosen one
stud bolt & measure
Side clearance of big-
0.50 Replace con-rod
end and small-end
Allowable weight
18 g
v
l
difference per con-rods
Torque valve of
Coat the bolt with
Clean out foreign
con-rod bearing cap bolt 18
engine oil
objects on joining
(kg
.
m) surface
Diameter of cam shaft
57.86~ 57.88
journal
Clearance between cam
0.12~0.17 0.24 Replace cam bush
Cam shaft and cam bush
shaft
End play of camshaft 0.28~0.43 0.6
Replace thrust
washer
Run-out of camshaft 0.1
Correct or replace
the cam shaft
Clearance between idle
0.025~0.091 0.15
shaft bush and idle shaft
Timing End play of idle gear
0.043~0.167 0.3
Correct or replace
gear shaft gear
Back-lash between
gears(cam, idle, crank 0.16~0.28 0.35 Replace gear
and injection)

Doosan PU086T Specifications

General

Brand	Doosan
Model	PU086T
Category	Engine
Language	English