BOMBARDIER 1982 Shop Manual page 177

1
SECTION 02 ENGINE
SUB-SECTION 08 (ENGINE TOLERANCES MEASUREMENT)
CRANKSHAFT END-PLAY
- 640 ENGINE TYPE
Specification:
MINIMUM MAXIMUM
0.20 mm
L008")
OAO mm
LOW")
ADJUSTMENT:
eCrankshaft end -play is adjusted with shims located be-
tween crankshaft and magneto side bearing . .
_ CAUTION: Always reinstall end-play adjustment
.". shim(s) on the magneto side between bearing and
crankshaft blade.
The following is required for the adjustment procedure:
- adjustment shims (refer to parts catalog)
(thickness available)
0.15 mm L006")
0.20 mm (.008")
0.30 mm LOl2")
- bearing simulator
PIN 420 876 160
- feeler gauge
eTotal shim thickness needed for the end-play adjust-
ment is determined with the following procedure:
- Remove magneto side bearing and existing shim(s).
- Slide the appropriate bearing simulator (see Tool sec-
tion) and retaining washer on the crankshaft.
- Position crankshaft assembly into crankcase lower
half, making sure that retaining washers are correctly
seated into the grooves.
- Gently tap crankshaft mag. side blade until PT.O.
side bearing bears against retaining washer.
P.T.O. side
push bearing against
retaining washer
- Measure distance between bearing simulator and re-
taining washer.
Bearing
simulator
Retaining
washer
mag. side
This measurement is the actual crankshaft end-play that
must be within specification . If the result is over specifi-
cation, add adjustment shim(s)
CRANKSHAFT END-PLAY
- 377,454, 464, 503 ENGINE TYPES
These engine types do not have end-play adjustment.
PAGE 175