Komatsu ecot3 PC300LC-8 Shop Manual page 899

50 Disassembly and assembly
[*12]
a Tighten the lubrication hose and lubrication
tube to the following torque.
3
Lubrication hose flare nut:
19.6 – 28.4 Nm {2.0 – 2.9 kgm}
Lubrication tube mounting bolt:
7 ± 1.1 Nm {0.7 ± 0.1 kgm}
[*13]
a Tighten the exhaust manifold mounting bolts
according to the following procedure.
3
1st time: Tighten all the bolts to 23.5 ± 4 Nm
{2.4 ± 0.41 kgm} in the order of the
numbers shown in the figure.
2nd time: Tighten only bolts 1 – 4 in the figure
to 23.5 ± 4 Nm {2.4 ± 0.41 kgm}.
3rd time: Tighten all the bolts to 43.1 ± 6 Nm
{4.4 ± 0.61 kgm} in the order of the
numbers shown in the figure.
4th time: Tighten only bolts 1 – 4 in the figure
to 43.1 ± 6 Nm {4.4 ± 0.61 kgm}.
PC300, 350-8
[*14]
a When installing the crosshead and rocker arm
assembly, observe the following precautions.
a Install the crosshead so that parts (a) and (b)
on its back side will be at the positions
checked when removed.
When installing a new crosshead, you do not
need to take care of the positions of parts (a)
and (b).
a Check that the adjustment screw is loosened
fully.
a After checking that the ball of adjustment
screw (85) is set in the socket of push rod (77)
securely, tighten mounting bolt (86).
3
Mounting bolt:
64.7 ± 4.9 Nm {6.6 ± 0.5 kgm}
a After tightening the mounting bolt, adjust the
valve clearance. For details, see Testing and
adjusting, "Adjusting valve clearance."
[*15]
a Install the fuel injector assembly according to
the following procedure.
a Check that the injector sleeve is free from flaw
and dirt.
1) Fit the gasket and O-ring to the injector.
2) Apply engine oil (EO15W-40) to the O-ring
of the injector and cylinder head side.
SEN02636-03
21