Doosan AD158TI, Руководство по эксплуатации и техническому обслуживанию

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Disassembly and assembly of major components - 96 -
●
Assemble temporarily one bolt each at both
bolt holes and by connecting the wire to the
bolts, lift it with crane or chain block and put
down on the cylinder block carefully.
●
Coat the crankshaft journal and pin parts
with engine oil, and after fitting the main
bearing into the bearing cap and assemble
it to the cylinder block making sure of the
number in order not to change the bearing
cap.
●
According to the tightening order,
tighten the bearing cap bolts with 30
kg.m
and with rotating angle method (90°
+
10° ) and tight-
ening order are as follows.
< Bearing cap bolt's tightening order >
(1) First step : screw down 1 ~ 2 threads.
(2) Second step : tighten with a bout
15
kg.m
by wrench.
(3) Third step : tighten with a bout 25
kg.m
by torque wrench.
(4) Fourth step : tighten with 30 kg.m by
torque wrench.
(5) Fifth step : tighten with final rotating
angle method 90°
+
10°.
However, according to above tighten-
ing order, tighten step by step.
●
Inspect if the crank shaft's rotation is smooth.
●
Assemble the crankshaft gear on the crankshaft and coat a white paint mark on
″
1
″
part in order to
find easily.
6.3.7. Camshaft
●
Coat the cam bush of cylinder block and
camshaft with engine oil.
●
Assemble the cam bush and camshaft for
them not to be damaged.
●
Assemble the crankshaft gear and the cam-
shaft gear making sure that the gear marks
on both gears are aligned together.
EFM2061
7 5 3 1 2 4 6
EFM2062I
1 1
1
EFM2063I