Subaru LEGACY 2006 Manual page 854

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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 side clearance (thrust
clearance). Replace the connecting rod if the side
clearance exceeds the specified limit.
Connecting rod side 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
5) Measure the oil clearance on each connecting
rod bearing using plastigauge. If any oil clearance
is not within the standard, replace the defective
bearing with a new part of standard size or under-
size as necessary. (See the table below.)
Connecting rod oil clearance:
Standard:
Bearing
( A )
Standard
( B )
(0.0012)
Undersize
(0.0020)
Undersize
(0.0098)
Undersize
6) Inspect the bushing at connecting rod small end,
( A )
and replace if worn or damaged. Also measure the
piston pin clearance at connecting rod small end.
Clearance between piston pin and bushing:
Standard:
ME-00179
ME-00180
ME(H4SO)-80
0.016 — 0.044 mm (0.00063 — 0.0017 in)
Bearing size
(Thickness at cen-
ter)
1.492 — 1.501
(0.0587 — 0.0591)
0.03
1.510 — 1.513
(0.0594 — 0.0596)
0.05
1.520 — 1.523
(0.0598 — 0.0600)
0.25
1.620 — 1.623
(0.0638 — 0.0639)
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
(2.0446 — 2.0453)
51.734 — 51.750
(2.0368 — 2.0374)
ME-00181
ME-00174