Subaru Legacy 2003 Service Manual page 283

MECHANICAL
4) Inspect the connecting rod bearing for scar,
peeling, seizure, melting, wear, etc.
5) Measure the oil clearance on individual connect-
ing rod bearings by means of plastigauge. If any oil
clearance is not within specification, replace the
defective bearing with a new one of standard size
or undersize as necessary. (See the table below.)
Connecting rod oil clearance:
• 2000 cc MODEL
Standard
0.010 — 0.038 mm (0.0004 — 0.0015 in)
Limit
0.050 mm (0.0020 in)
Bearing size
Bearing
(Thickness at center)
1.492 — 1.501
Standard
(0.0587 — 0.0591)
0.03
1.510 — 1.513
(0.0012)
(0.0594 — 0.0596)
undersize
0.05
1.520 — 1.523
(0.0020)
(0.0598 — 0.0600)
undersize
0.25
1.620 — 1.623
(0.0098)
(0.0638 — 0.0639)
undersize
Connecting rod oil clearance:
• 2500 cc MODEL
Standard
0.012 — 0.038 mm (0.0005 — 0.0015 in)
Limit
0.05 mm (0.0020 in)
Bearing size
Bearing
(Thickness at center)
1.490 — 1.502
Standard
(0.0587 — 0.0591)
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
CYLINDER BLOCK
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)
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(H4SO)-86
6) Inspect the bushing at connecting rod small end,
and replace if worn or damaged. Also measure the
piston pin clearance at connecting rod small end.
Clearance between piston pin and bushing:
Standard
0 — 0.022 mm (0 — 0.0009 in)
Limit
0.030 mm (0.0012 in)
7) Replacement procedure is as follows.
(1) Remove the bushing from connecting rod
with ST and press.
(2) Press the bushing with ST after applying oil
on the periphery of bushing.
ST 499037100 CONNECTING ROD BUSH-
ING REMOVER AND IN-
STALLER
ST
(3) Make two 3 mm (0.12 in) holes in bushing.
Ream the inside of bushing.
(4) After the completion of reaming, clean the
bushing to remove chips.
ME-00181
ME-00174
ME-00182