Subaru 2009 IMPREZA Service Manual page 296

MECHANICAL
11) Tighten the 8 mm and 6 mm cylinder block con-
necting bolts on the LH side (A — H) in alphabetical
order.
Tightening torque:
(A) — (G): 25 N·m (2.5 kgf-m, 18.4 ft-lb)
(H): 6.4 N·m (0.7 kgf-m, 4.7 ft-lb)
(C)
(E)
(D)
(H)
12) Apply a coat of engine oil to the oil seal periph-
ery and install the rear oil seal using ST1 and ST2.
NOTE:
Use a new rear oil seal.
ST1 499597100 CRANKSHAFT OIL SEAL
GUIDE
ST2 499587200 CRANKSHAFT OIL SEAL
INSTALLER
ST2
(A) Rear oil seal
(B) Flywheel attaching bolt
13) Position the top ring gap at (A) or (B) in the fig-
ure.
14) Position the second ring gap at 180° on the re-
verse side the top ring gap.
180
(B) (A)
R H
Cylinder Block
(G)
(A)
(B)
(F)
ME-00147
(B)
(A)
ST1
ME-00148
180
(B)
(A)
L H
ME-02721
ME(H4SO)-78
15) Position the upper rail gap at (C) in the figure.
25
(C)
R H
16) Align the upper rail spin stopper (E) to the side
hole (D) on the piston.
(D)
17) Position the expander gap at (F) on the 180°
opposite direction of (C) in the figure.
(F)
180
R H
18) Set the lower rail gap at position (G), located
120° clockwise from (C).
(G)
120
R H
NOTE:
• Make sure ring gaps do not face the same direc-
tion.
• Make sure ring gaps are not within the piston
skirt area.
(C)
25
L H
ME-02722
(E)
ME-02471
180
(C)
(C)
(F)
L H
ME-02723
120
(G)
(C)
(C)
L H
ME-02724