Doosan GV158TIC, Руководство по эксплуатации и техническому обслуживанию

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Disassembly and Reassembly of Major Components - 68 -
(a) How to utilize the cylinder gauge
●
Assemble the main bearing at the cyl-
inder block and after tightening the
bearing cap at the specified torque,
measure the inside diameter.
●
Assemble the bearing at the bigger
end of connecting rod, and after tight-
ening the bearing cap at the specified
torque, measure the inside diameter.
●
Crankshaft pin and bearing clearance
value exceeds the limit value, grind
the crankshaft journal and pin and
then use the undersized bearing.
(b) How to utilize plastic gauge
●
Install the crankshaft in the cylinder block and place the plastic gauge on the crankshaft journal
and pin at axial direction and then after tightening the bearing cap at the specified torque and
again after tearing apart the bearing cap, measure the flatten plastic gauge thickness by pick it
up. This is the oil clearance.
●
With the same points, the oil clearance of connecting rod also can be measured.
Journal bearing
nominal diameter ø104.066 ~
ø104.115 mm
Bearing cap bolt
torque
Initial 30 kg.m +
angle 90°
EAMD060I
Connecting rod
bearing journal
diameter
ø90.056 ~
ø90.098 mm
Connecting rod
bolt torque
Initial 10
kg.m
+
angle 90°
A
8
8
Section
A-B
B
1
2
3
10
10
EFM2049I
Standard Limit
0.056
~ 0.118 mm
0.143 mm