BOMBARDIER 1980 Shop Manual page 140

SECTION 03
SUB-SECTION 02, (ENGINES)
BOTTOM END
CLEANING
Discard all oil seals, gaskets, "0" rings and sealing rings,
Clean all metal components in a non-ferrous metal
cleaner.
Remove old sealant from crankcase mating surfaces with
Bombardier sealant stripper.
. . . CAUTION: Never use a sharp object to scrape
Y
away old sealant as score marks incurred are
detrimental to crankcase sealing.
DISASSEMBLY & ASSEMBLY
General
Refer to Technical Data Section for component fitted
tolerance and wear limit.
00®Crankcase halves are factory matched and there-
fore, are not interchangeable or available as single halves.
Prior to Joining of crankcase halves, apply "Locme 515"
(no. 413 7027) on mating surfaces.
Position the crankcase halves together and tighten nuts
(or bolts) by hand then install armature plate (tighten)
on magneto side to correctly align the crankcase halves.
Torque nuts (or bolts) to 22 Nom (16 ft-Ibs) following
illustrated sequence.
8
00
Torque to 22 Nom (16 ft-Ibs).
o
Torque to 22 Nom (16 ft-Ibs).
®@Crankshaftend-play.(minimum 0,20 mm (.008"),
maximum ,016") is adjusted with shim(s) located be-
tween crankshaft and magneto side bearing. To determine
correct amount of shim(s), proceed as follows.
O
NOTE: Crankshaft end-play requires adjustment only
when crankshaft and/or crankcase is replaced.
(640 ENGINE TYPE), PAGE 4
Remove magneto side bearing and existing shim(s), Slide
the bearing simulator (no. 420 876 160) and the retain-
Ing washer on the crankshaft. (See Tools Section),
Position crankshaft assembly into crankcase lower half.
Make sure that retaining washers are correctly seated
in the grooves.
Gently tap crankshaft counterweight (mag. side) until
PTO, side bearing bears against retaining washer,
8
Any free-play between the bearing simulator and magneto
s'lds retain'lng washer, minus
end-play,
is the distance
to be covered by shim(s). Shims are available in the
thickness of 0.15 mm (.006"), 0.2 mm (008"), 0.3
mm (.012"),
Beanng simulator