BOMBARDIER 1982 Shop Manual page 176

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SECTION 02 ENGINE
SUB-SECTION 08 (ENGINE TOLERANCES MEASUREMENT)
a) Measure crankcase halves as illustrated (M 1 and M2).
A standard compressed crankcase gasket will have a
0.30 mm (,012") thickness (M3l. Add these measure-
ments to obtain dimension" A".
b) Measure the thickness of each ball bearing (M4 and
M5l.
Measure distance between bearing shoulders on crank-
shaft (M6l. Measure the distance ring and adjust-
ment shims thickness (M7 and Mal. Add these mea-
surements to obtain dimension B.
Measuring
distance
between
bearing
shoulders
PAGE
174
Measuring
thickness of
ball bearing
O
NOTE: The 247 engine type has one distance ring
on PTO side and adjustment shims on MAG side.
The 277 engine type has one distance ring on PTO side
and one distance ring and adjustment shims on MAG
side.
c) From dimension A, subtract dimension B.
The result is the actual crankshaft end-play that must
be within specification.
If the result is over specification, add adjustment
shim(s) .
If the result is under specification, remove adjust-
ment shim(s).
TO SUMMARIZE: (247 & 277
engine
type)
A= M1
+
M2
+
M3
B = M4
+
M5
+
M6
+
M7
+
Ma
A-B = actual end-play that must be within specification.
Ma is the dimension that must be adjusted to obtain the
specified crankshaft end-play.
-+j
~M 3
I
I'
I
t.-M l ~t--M 2 ~
I
End -play is adjusted
I
with shims
: I
II
---., M4
f+-
~
M5
I.-
, I I
II I
I
II--M6~1'
,
'-..!
~M7 M8-'1~!
l
l