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ENGINE: CRANKSHAFT AND MAIN BEARINGS
47
CRANKARM FILLET SPECIFICATIONS
Fig. 66 - Fillet radII for chain end main bearing Journal shoulder.
r
2";"-2,2
=
.079"
to
.087"
Fig. 70 - Crankshaft.
In foreground, oil passage ports on crankpins and Journals
After grinding polish journals and then thoroughly
wash the crankshaft to remove
all
particles of
abrasive material left.
Oil
passages
should be cleaned
by
means of
repeated jets of petrol under pressure (fig. 70).
Fig. 61 - Fillet radii for flywheel end main bearing journal
shoulder.
r
2--:-2,2 = .079"
10
.087"
Flywheel and Ring Gear.
Check the conditions of
ring
gear teeth;
if
chips
or serious damage are detected. renew the ring
gear assembly.
The ring gear must be installed on the flywheel
by
means of an arbor press; pre-heat the ring
gear in an oil bath at 176
0
F (60
0
C).
Mating faces of flywheel to crankshaft and driven
plate should be mirror-like and free from scores.
Moreover. above faces must be thoroughly flat
and at right angles to flywheel rotation axis.
Support the flywheel on A (fig. 71) and locate it
in crankshaft seat: the dial indicator set at B and C
should show no runout
in
excess of .004" (0.1 rom).
FOR 0 PER
EOUILIBRATURA
LATO
ALBERO MOTORE
Fig. 68 • Fillet radii for intermediate main bearing journal
shoulder.
r
1,8+2 _ .071"
to
.079" -
r
1,8+2,2 = .071"
to
.087"
LATO FRIZIONE
Fig. 11 • Diagram for ehecklnQ flywheel mating faces to driven
plate and crankshaft mounting flange.
Foro
per
eQuilibratura = Balance hole.• lato ftlzione _ Clutch
side.• lato albeto molote = Crankshaft side.
/l
A
B
'\,y
•
,,"?
0
<
C
Fig. 69. Fillet radii for eonnectlng rod bearing Iournal shoulders.
t
1,8+2,2 = .071"
to
.087"
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