Zundapp 281 - Page 19

d
Prepare
crankshaft
for
gauging,
Fit
a
washer
with
2
mm
bevel
on
to
the
crankshaft
drive
shaft
(bevel
facing
crank
web).
Fit a washer with 2 mm bevel on to
the flywheel magneto shaft (bevel
facing crank web, fig. 41).
Now measure crankshaft over both
webs, including special bevelled
washers (fig. 42), then deduct the
value obtained from the sum ob-
tained by the two gauging oper-
ations shown in fig. 39 and 40. Fit
packing washers to eliminate all
but the permissible play of 0.1 mm,
as shown in the following example.
Example:
Left casing, 18,4 mm
Right casing 24,5 mm
42,9 mm
Crankshaft - 41,7mm
1,2mm
Axial play — OI ms
1,1 mm
Standard washer
on
drive
shaft
-
05mm
Remainder
flywheel
magneto
shaft
0,6
mm
On
engines
of
type
281,
the
standard
washer
is
0.2
mm thick.
Fitting Crankshaft into Right Casing
Heat
up
inner
race
of
ball
bearing
with
a
hot
mandrel,
then
fit
crank-
shaft
(fig.
43).
»
Fit
sealing
ring
for
crankshaft
drive
shaft,
using
special
assembly
sleeve
MV
6-339
to
prevent
damage
to
the
sealing
lips
by
the
drive
shaft
thread.
Drive
sealing
ring
home
with
light
taps
of
hollow.
punch
MV
6-347 (fig. 44).
Fig. 41
Fig. 42
Fig. 43
Fig. 4