Komatsu ecot3 PC300LC-8 Shop Manual page 888

SEN02636-03
7. Tighten the mounting bolts according to the fol-
lowing procedure.
1) Tighten the 4 oil pan mounting bolts (indi-
cated by the arrows) temporarily.
2) Tighten the seal housing mounting bolts in
the order of the numbers shown in the fig-
ure.
3
Mounting bolt:
12.7 ± 2.0 Nm {1.3 ± 0.2 kgm}
3) Tighten the 4 oil pan mounting bolts (indi-
cated by the arrows) to the following
torque.
3
Mounting bolt:
8. Install the flywheel housing according to the
following procedure.
1) Sling flywheel housing (5) and install it
with mounting bolts (4).
a Apply a string of gasket sealant 1 – 3
mm in diameter to the housing mount-
ing flange face and around each
mounting bolt hole.
10
24 ± 4 Nm {2.4 ± 0.4 kgm}
50 Disassembly and assembly
2) Tighten the mounting bolts in the order of
the numbers shown in the figure.
3
Mounting bolt:
77 ± 12 Nm {7.9 ± 1.2 kgm}
3) After installing the flywheel housing, mea-
sure the radial runout and facial runout
with tool [4].
a Radial runout: Max. 0.20 mm
a Facial runout: Max. 0.20 mm
Measuring radial runout
q
1] Install tool [4] to the crankshaft end.
2] Set the probe of the dial gauge per-
pendicular to the spigot joint portion
of the flywheel housing.
3] Set the dial gauge reading to "0",
rotate the crankshaft by 1 turn, and
measure the difference between the
lowest and highest values indicated
by the dial gauge.
a After the crankshaft is rotated by 1
turn, check that the dial gauge indi-
cates the value at the start of rotation.
PC300, 350-8