BOMBARDIER 1982 Shop Manual page 175

SECTION 02 ENGINE
SUB-SECTION 08 (ENGINE TOLERANCES MEASUREMENT)
CONNECTING ROD BIG END
AXIAL PLAY
TYPE
247,277,377
503,640
454,464
MINIMUM - MAXIMUM
0.20 - 1.00 mm
(,008 - .039")
OAO - 1.20 mm
(,016 - 047")
Using a feeler gauge measure distance between thrust
washer and crankshaft balancer. If the distance exceeds
specified tolerance, repair or replace the crankshaft.
CONNECTING ROD ALIGNMENT
Check if connecting rod is bent as follows:
- Once engine crankcase is assembled with the piston
mounted on connecting rod without its piston rings,
position cylinder on piston.
O
NOTE: The cylinder/crankcase gasket must not
be installed.
- Rotate crankshaft slowly and at the same time ob-
serve piston movement within the cylinder. If piston
bears against one side (PTO or mag. side), the con -
necting rod is bent.
- To correct position needle bearing and gudgeon pin
on connecting rod then pry connecting rod as illustrat-
ed .
CRANKSHAFT END-PLAY
- 247 & 277 ENGINE TYPE
Specification:
MINIMUM - MAXIMUM
0.20 mm - OAO mm
(,008") - (,016")
ADJUSTMENT:
eCrankshaft end-play is adjusted with shims located be-
tween crankshaft and magneto side bearing.
_ CAUTION: Always install end play adjustment shims
." on the magneto side between bearing and crank-
shaft blade.
The following is required for the adjustment procedure:
- adjustment shims (refer to parts catalog)
(thicknesses available)
0.10 mm (,004")
0.20 mm (,008")
0.30 mm (,012")
0.50 mm (,020")
1.00 mm (,040") - 247 only
- micrometer
- vernier
eTotal shim thickness needed for the end-play adjust-
ment is determined with the following procedure:
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