Komatsu ecot3 PC300LC-8 Shop Manual page 889

50 Disassembly and assembly
Measuring facial runout
q
1] Similarly to measurement of the radial
runout, set the probe of the dial
gauge perpendicular to the end face
of the flywheel housing.
a When
crankshaft to the front or rear
side so that an error will not be
caused by the end play.
2] 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.
9. Install the flywheel according to the following
procedure.
1) Install guide bolt [101] and flywheel (2).
2
Mounting bolt of flywheel:
2) Temporarily tighten the mounting bolt with
fingers, remove guide bolt [101] installed
in step 1).
PC300, 350-8
measuring, bring the
Engine oil EO30
3) Using plate [103], fit the flywheel in fly-
wheel housing.
4) Using torque wrench [102], tighten the
mounting bolts in the order of the numbers
shown in the figure.
3
Mounting bolt:
137 ± 7 Nm {14.0 ± 0.7 kgm}
5) After installing the flywheel, measure the
radial runout and facial runout with tool [4].
a Radial runout: Max. 0.13 mm
a Facial runout: Max. 0.20 mm
q Measuring radial runout
1] Install tool [4] to the flywheel housing.
2] Set the probe of the dial gauge per-
pendicular to spigot joint portion (a) or
periphery of the flywheel.
3] Rotate the flywheel by 1 turn and
measure the difference between the
lowest and highest values indicated
by the dial gauge.
a After the flywheel is rotated by 1 turn,
check that the dial gauge indicates
the value at the start of rotation.
SEN02636-03
11