BOMBARDIER 1982 Shop Manual page 42

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SECTION 02 ENGINE
SUB-SECTION 02 (277 ENGINE TYPE)
CLEANING
Discard all seals and gaskets .
Clean all metal components in a non-ferrous metal clean-
er.
DISASSEMBL Y
General
To remove drive pulley, refer to "Drive Pulley", section
03, sub-section 03.
To remove magneto, refer to "Magneto" in this section.
G)
0 Do not remove polyamid rings unless necessary.
To remove, heat slightly with a butane torch then pry
out using a screwdriver.
@ @
To remove seals, push from outside the crankcase
towards the inside .
@ ;@Use appropriate puller to remove ball bearings
from crankshaft (see Tools section).
~(O)(E~~\~
P.T.O . side Magneto side Protective cap
(P.T.O. side)
O
NaTE: Prior to magneto side bearing installation,
install required shim(s) (crankshaft end-play) on
crankshaft extension. At assembly, place bearings into
an oil container heated to 100°C (210°F), This will ex-
pand the bearings and permit them to slide easily on the
shaft.
INSPECTION
The inspection of the engine bottom end must include
the following measurements:
TOLERANCES
MEASUREMENTS FITTING NEW PARTS
WEAR LIMIT
(MIN.) (MAX.)
Crankshaft
N.A. N.A.
.10mm
deflection 1.0039")
Connecting rod big .20 mm .53 mm 1.0 mm
end axial play 1.0079") 1.020S") 1.0394")
Connecting rod
N.A.
alignment
N.A.
N.A.
Crankshaft end play .20 mm .40mm
N.A.
1.007S") 1.0156")
PAGE42
O
NaTE: For the measurement
proce,~ures,
refer to
"Engine Tolerances Measurement , section 02,
sub-section 09.
ASSEMBLY
@@Prior to installation, place bearings into an oil con-
tainer and heat the oil to 100°C (210°F) for 5 to 10 min.
This will expand bearings and ease installation.
Install bearings with groove outward.
O NaTE: Crankshaft end-play requires adjustment
only when crankshaft and/or crankcase is replaced.
Prior to magneto side bearing installation shim(s) on
crankshaft extension. For the crankshaft end-play ad-
justment procedure, refer to Engine Tolerances Mea -
surement, section 02, sub-section 09.
G)
0To install polyamid rings, apply oil on outside dia-
meter then use no. 420276930 pusher for magneto side
and no. 420276940 pusher for P.T .O . side.
/
Inside lip
faCing towards
the crankcase
Pusher no.
420276930
420276940
(MAG)
(PTO.)
Chamfered side
towards the
crankshaft bearing
~12=z:zz:z:z:=::/