Subaru 2009 IMPREZA Service Manual page 1149

D: ASSEMBLY
T
(1) Connecting rod bearing
(2) Connecting rod
(3) Connecting rod cap
(4) Oil ring
1) Apply engine oil to the surface of the connecting
rod bearings, and install the connecting rod bear-
ings on connecting rods and connecting rod caps.
2) Position each connecting rod with the side with a
side mark facing forward, and install it.
3) Attach the connecting rod cap and tighten it with
connecting rod bolt. Make sure the arrow on con-
necting rod cap faces the front during installation.
NOTE:
• Each connecting rod has its own mating cap.
Make sure that they are assembled correctly by
checking their matching number.
• When tightening the connecting rod bolts, apply
oil on the threads.
Tightening torque:
52 N·m (5.3 kgf-m, 38.4 ft-lb)
4) Install the oil ring upper rail, expander and lower
rail by hand.
5) Install the second ring and top ring using piston
ring expander.
NOTE:
Assemble so that the piston ring mark "R" faces the
top side of the piston.
Cylinder Block
(3)
(1)
(5) Second ring
(6) Top ring
(7) Snap ring
(8) Side mark
E: INSPECTION
1. CYLINDER BLOCK
1) Check for cracks or damage. Use liquid pene-
trant tester on the important sections to check for
fissures. Check that there are no marks of gas leak-
ing or water leaking on gasket installing surface.
2) Check the oil passages for clogging.
3) Inspect the cylinder block surface that mates
with cylinder head for warping by using a straight
edge, and correct by grinding if necessary.
Warping limit:
Grinding limit:
Standard height of cylinder block:
ME(H4DOTC)-91
(1)
(2)
(8)
(7)
Tightening torque:N·m (kgf-m, ft-lb)
T: 52 (5.3, 38.4)
0.025 mm (0.00098 in)
0.1 mm (0.004 in)
201.0 mm (7.91 in)
MECHANICAL
(4)
(5)
(6)
ME-02985