Komatsu 140-3 Series Shop Manual page 351

DISASSEMBLY AND ASSEMBLY
36. Flywheel
Using hanging bolt
flywheel (1) and install it to the crankshaft and
tighten the mounting bolts.
2
Apply engine oil SAE No. 30 to threads
and seat of bolt.
4
Flywheel: 60kg
When installing the flywheel, match the dow-
el pin of the crankshaft to the hole of the fly-
wheel.
Be carefull not to touch the flywheel to the
engine revolution sensor.
Tighten the mounting bolts in the following
order.
3
Flywheel mounting bolt:
1st time:
112.7 – 122.5 Nm {11.5 – 12.5 kgm}
2nd time: 1) When using tool J
Using the angle tightening
wrench (tool J), tighten the
bolts by 90
(1) – (10).
140-3 SERIES
(12 mm, P = 1.75), sling
+30º
in the order of
0
GENERAL ASSEMBLY OF ENGINE
2) When not using tool J
Make marks on the bolt and
flywheel f with paint, then
tighten the bolts by 90
the order of (1) – (10).
After tightening the bolt, make a punch mark
"g" on its head.
• If the bolt has 5 punch marks, replace it.
After installing the flywheel, measure its fa-
cial runout and radial runout with tool
Radial runout: Max. 0.30 mm
Facial runout: Max. 0.30 mm
+30º
in
0
.
13-49