Zundapp 281 - Page 20

Fig. 45
Fig. 46
d
For engines of type 281,
use assembly sleeve SK-A 217, first
expanding the bore to 13.5 mm.
Fit two 5-mm steel balls with a little
grease into the ball seats of the
drive shaft (crankshaft) then slide
on the primary drive gear. Finally,
secure assembly with locking wash-
er and hexagon nut (fig. 45).
Remember to secure the nut
On engines, type 281, stick
19 rollers, 5x 3.5 dia., with a gene-
rous grease coating into the bear-
ing race of the right casing, then
slide spacer ring 281-05.110 on to
the roller assembly (fig. 46).
Measuring Axial Play of Selector
Shaft
Place gauging bar or the yoke
over the right-hand casing, so that
you can measure with the depth
scale
right
to
the
stop
face
for
the
selector shaft inside the casing.
Note the value measured, remem-
bering to allow for the thickness of
the scale bar (fig. 47).
Place the bar on the contact face
of the left casing and measure
distance to the ball bearing inner
race (stop face for selector shaft,
fig. 48); Add the value read off to
the one already noted.
20