BOMBARDIER RALLY 200 2003 Shop Manual page 145

Ring End Gap
RING END GAP
NEW MINIMUM
RECTANGULAR
TAPER-FACE
OIL SCRAPER RING
NEW MAXIMUM
RECTANGULAR
TAPER-FACE
OIL SCRAPER RING
SERVICE LIMIT
RECTANGULAR
TAPER-FACE
OIL SCRAPER RING
Measure position for ring end gap in the area of 8
to 16 mm (.315 to .630 in) from top of cylinder.
NOTE: In order to correctly position the ring in the
cylinder, use piston as a pusher.
Using a feeler gauge, check ring end gap. Replace ring
if gap exceeds above described specified tolerance.
Installation
For installation, reverse the removal procedure.
Pay attention to the following details.
NOTE: First install spring and then rings of oil scraper
ring.
Install the oil scraper ring first, then the taper-face
ring with the word "N and TOP" facing up, then the
rectangular ring with the word "N and TOP" facing
up.
VMR2003_012_03_08A.FM
0.20 mm (.008 in)
0.20 mm (.008 in)
0.20 mm (.008 in)
0.35 mm (.014 in)
0.35 mm (.014 in)
0.70 mm (.028 in)
0.8 mm (.032 in)
1.2 mm (.047 in)
Subsection 08 (CYLINDER AND HEAD)
1. Rectangular ring
2. Taper-face ring
3. Oil scraper ring
CAUTION: Ensure that top and second rings are
not interchanged.
NOTE: Use a ring expander to prevent breakage
during installation. The oil ring must be installed by
hand.
Check that rings rotate smoothly after installation.
Space the piston ring end gaps 120° apart and do
not align the gaps with the piston pin bore or the
thrust side axis.
A
A31C2OA
1. DO NOT align ring gap with piston thrust side axis
2. DO NOT align ring gap with piston pin bore axis
A. 120°
Section 03 ENGINE
A
A
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03-08-23