BOMBARDIER 1980 Shop Manual page 43

SECTION 03
SUB-SECTION 02 (ENGINES)
BOTTOM END
CLEANING
Discard all oil seals and gaskets.
Clean all metal components in a non-ferrous metal clea-
ner.
DISASSEMBLY & ASSEMBLY
General
Refer to Technical Data Section for component fitted
tolerance and wear limit. If necessary. refer to Dnve Pulley
Section to remove drive pulley.
00When disassembling/assembling crankcase halves.
do not heat the crankcase. If heat is necessary, tempera-
ture must not exceed 55°C (130°F).
o
Do not remove unless necessary.
To remove. heat slightly with a butane torch then pry
out using a sc-rewdriver.
To install. apply oil on outside diameter then use a sUitable
pusher.
Chanfer
towards
inside
of crankcase
®®0At assembly. torque to 22 N'm (16 ft-Ibs) follo-
wing illustrated sequence.
3
(247 ENGINE TYPE). PAGE 4
@
Torque to 35 N'm (26 ft-Ibs).
@@
Crankshaft maximum end-play should be:
Minimum
0.20 mm
(008")
Maximum
0.40 mm
(.016")
O
NaTE: Crankshaft end-play
IS
adjusted only when
crankshaft and/or crankcase
IS
replaced.
To determine end play:
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 0.32 mm
(.012") for gasket displacement. Equals A.
i~
b) Measure thickness of each ball beanng. Measure
distance between crankshaft blades. Add measure-
ments with thickness of standard shim 1 mm (.040")
on P.T.O. side. Total equals B.
"'1_1-
Measunng
thickness of
ball beanng