Mitsubishi Lancer Evolution-VII Workshop Manual page 685

ENGINE OVERHAUL -
Upper
side
rail
closed
gap
Spacer closed gap
Side rail edge
Piston ring expander
Identification mark: 1R
Identification
mark: 2R
"BA OIL RING INSTALLATION
1. Assemble the oil ring's spacer into the piston ring groove.
Next, assemble the upper side rail, and then assemble
the lower side rail.
Lower
side
NOTE
rail
closed
(1) Install so that the side rail and spacer closed gaps
gap
(2) The following identification colours are applied on
2. The side rail can be assembled easily by fitting one end
of the side rail into the piston groove and then pressing
on it with fingers as shown in the illustration.
Caution
The side rail's closed gap could break if it is spread
open with a ring expander in the same manner as
the other piston rings.
3. After assembling into the piston, check that the side rail
rotates smoothly in either direction.
"CA PISTON RING NO. 2/PISTON RING NO. 1
Using a piston ring expander, assemble the ring with the
identification mark facing upward.
Identification mark
No. 1 ring 1R
No. 2 ring 2R
NOTE
The following size marks are stamped on the piston ring
Size marks
according to the size.
Size
S.T.D.
No. 1
0.50 mm O.S.
No. 2
1.00 mm O.S.
Piston and Connecting Rod
are at the position shown in the illustration.
the spacer and side rail (new parts) according to the
size.
Size
S.T.D.
0.50 mm O.S.
1.00 mm O.S.
INSTALLATION
11B-59
Identification colour
None
Blue
Yellow
Size mark
(None)
50
100