BOMBARDIER 1980 Shop Manual page 53

To determine end-play, 'perform the followings.
a) Measure crankcase. To do this first measure each half
from mating surface to bottom of bearing seat. Add
measurements of both halves then add 0.30 mm
(.012") for gasket displacement. Equals A.
Bearing seat
b) Measure thickness of each ball bearing and of standard
shims on each side (@ and @). Measure distance
between bearing shoulders on crankshaft. Add mea-
surements. Total equals B.
Measuring the thickness
of the ball beanng,
SECTION 03
SUB-SECTION 02 (ENGINES)
Measuring the distance between ball beanng shoulders
c) Subtract measurement B from measurement A minus
tolerance. Total balance is distance to be shimmed.
Shim(s) must be located between magneto side bear-
ing and crankshaft blade.
@@Standard shims must be installed with the inside
diameter rounded edge facing crankshaft blade.
Rounded edge facmg crankshaft blade.
@@Use appropriate puller to remove ball bearings from
crankshaft (see Tools section).
~~~@~~~
p.T,a, Side
Magneto Side Protective cap
(PTO. Side)
O
NOTE: Prior to magneto side bearing installation,
install required shim(s) (crankshaft end-play) on
crankshaft extension. At assembly, place bearings into
an oil contained heated to 100°C (210°F). This will
expand the bearings and permit them to slide easily on
the shaft.
(277 ENGINE TYPE), PAGE 5