Ring Piston Groove Clearance; Ring End Gap; Crankshaft Deflexion - BOMBARDIER Skandic 377 IR Shop Manual

SECTION 02 ENGINE
SUB-SECTION 08 (ENGINE DIMENSIONS MEASUREMENT)
16 mm
The difference between these two measurements should
be within specified tolerance.
RING PISTON GROOVE CLEARANCE
MINIMUM - MAXIMUM (wear limit)
0.04 mm - 0.20 mm
L002") - L008")
Using a feeler gauge check clearance between rectan-
gular ring and groove. If clearance exceeds specified
tolerance, replace piston .
O
NOTE: Ring piston groove clearance can be
measured only on rectangular ring .
RING END GAP
ENGINE RING END GAP MAXIMUM RING END
TYPE (new ring) GAP (worn ring)
All
1984
0.20 -
0 .35 mm
engines L008 - .014")
1.0
mm
L039")
Position ring half way between transfer ports and intake
port. On rotary valve engines, position ring just below
tra nsfer ports.
O
NOTE: In order to correctly position the ring in the
cylinder, use piston as a pusher.
PAGE 150
Using a feeler gauge, check ring end gap. If gap exceeds
specified tolerance the ring should be replaced .
CRANKSHAFT DEFLEXION
TYPE
247
277 ,3 77 ,447,
462,503,534
MAXIMUM
0.1 mm (0.0039")
0.08 mm (0 .0031 ")
Turn crankshaft on "V" shaped blocks; using a dial indi-
cator measure deflection on each side as illustrated. If
deflection exceeds specified tolerance, the crankshaft
should be repaired or replaced.
Measure at 6 mm
(1/4")
from the edge
Measure
behind the key