Komatsu Galeo PC800-8 Shop Manual page 941

Hydraulic excavator
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50 Disassembly and assembly
3.
Flywheel
Using eyebolt [1] (12 mm, P = 1.75), sling fly-
wheel (1), install it to the crankshaft, and
tighten the bolts.
a If there are 5 punch marks on a bolt, do
not use that bolt but replace it.
2
Threads and seat of bolt:
4
Flywheel: 65 kg
a Tighten the mounting bolts according to the fol-
lowing procedure.
3
Flywheel mounting bolts
1st time: 118 ± 4.9 Nm {12 ± 0.5 kgm}
2nd time: 1) When using tool A2
(See the tools list)
Retighten each bolt by 90°
the order of [1] – [8].
2) When not using tool A2
Make marks on each bolt and fly-
wheel with paint, then retighten
each bolt by 90°
of [1] – [8].
PC800, 850-8
Engine oil SAE No. 30
+30°
in
+0
+30°
in the order
+0
a After tightening, make 1 punch mark (9) on
each bolt head to indicate the number of tight-
ening time.
a After installing the flywheel, measure the facial
runout and radial runout with tool [1].
a Radial runout: Max. 0.30 mm
a Facial runout: Max. 0.30 mm
Carry out the following installation in the
q
reverse order to removal.
SEN01054-01
31

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