Subaru Legacy 2005 Service Manual page 1152

MECHANICAL
5. CONNECTING ROD
1) Replace the connecting rod, if the large or small
end thrust surface is damaged.
2) Check for bend or twist using a connecting rod
aligner. Replace the connecting rod if the bend or
twist exceeds the limit.
Limit of bend or twist per 100 mm (3.94 in) in
length:
0.10 mm (0.0039 in)
( B )
(A) Thickness gauge
(B) Connecting rod
3) Install the connecting rod fitted with bearing to
crankshaft and measure the thrust clearance. If
thrust clearance exceeds the standard or offset
wear occurs, replace the connecting rod.
Connecting rod thrust clearance:
Standard
0.070 — 0.330 mm (0.0028 — 0.0130 in)
4) Inspect the connecting rod bearing for scar,
peeling, seizure, melting, wear, etc.
Cylinder Block
( A )
( B )
( A )
ME-00179
ME-00180
ME(H4DOTC)-86
5) Measure the oil clearance on individual connect-
ing rod bearings by means of plastigauge. If any oil
clearance is not within the standard, replace the
defective bearing with a new one of standard size
or undersize as necessary. (See the table below.)
Connecting rod oil clearance:
Standard
0.026 — 0.052 mm (0.0010 — 0.0020 in)
Bearing size
Bearing
(Thickness at center)
1.486 — 1.498
Standard
(0.0585 — 0.0590)
0.03
1.504 — 1.512
(0.0012)
(0.0592 — 0.0595)
undersize
0.05
1.514 — 1.522
(0.0020)
(0.0596 — 0.0599)
undersize
0.25
1.614 — 1.622
(0.0098)
(0.0635 — 0.0639)
undersize
6) Inspect the bushing at connecting rod small end,
and replace if worn or damaged. Also measure the
piston pin clearance at the connecting rod small
end.
Clearance between piston pin and bushing:
Standard
0 — 0.022 mm (0 — 0.0009 in)
Unit: mm (in)
Outer diameter of
crank pin
51.984 — 52.000
(2.0466 — 2.0472)
51.954 — 51.970
(2.0454 — 2.0461)
51.934 — 51.950
(2.0447 — 2.0453)
51.734 — 51.750
(2.0368 — 2.0374)
ME-00181
ME-00174