Subaru 2009 IMPREZA Service Manual page 310

MECHANICAL
Journal O.D.
Standard
Bearing size
(Thickness at center)
Journal O.D.
0.03 (0.0012)
Undersize
Bearing size
(Thickness at center)
Journal O.D.
0.05 (0.0020)
Undersize
Bearing size
(Thickness at center)
Journal O.D.
0.25 (0.0098)
Undersize
Bearing size
(Thickness at center)
4) Use a thickness gauge to measure the thrust
clearance of crankshaft at #5 crank journal bearing.
If clearance exceeds the standard, replace the
bearing.
Crankshaft thrust clearance:
Standard:
0.030 — 0.115 mm (0.0012 — 0.0045 in)
5) Inspect individual crankshaft bearings for signs
of flaking, seizure, melting and wear.
6) Measure the oil clearance on each crankshaft
bearing using plastigauge. If the measured value is
out of standard, replace the defective bearing with
an undersize one, and replace or grind to correct
the crankshaft as necessary.
Crankshaft oil clearance:
Standard:
0.010 — 0.030 mm (0.0004 — 0.0012 in)
Cylinder Block
Crank journal outer diameter
#1, #3
59.992 — 60.008
(2.3619 — 2.3625)
1.998 — 2.011
(0.0787 — 0.0792)
59.962 — 59.978
(2.3607 — 2.3613)
2.017 — 2.020
(0.0794 — 0.0795)
59.942 — 59.958
(2.3599 — 2.3605)
2.027 — 2.030
(0.0798 — 0.0799)
59.742 — 59.758
(2.3520 — 2.3527)
2.127 — 2.130
(0.0837 — 0.0839)
ME-00322
ME(H4SO)-92
Crank pin outer diameter
#2, #4, #5
59.992 — 60.008
(2.3619 — 2.3625) (2.0466 — 2.0472)
2.000 — 2.013
(0.0787 — 0.0793) (0.0587 — 0.0591)
59.962 — 59.978
(2.3607 — 2.3613) (2.0454 — 2.0461)
2.019 — 2.022
(0.0795 — 0.0796) (0.0594 — 0.0596)
59.942 — 59.958
(2.3599 — 2.3605) (2.0446 — 2.0453)
2.029 — 2.032
(0.0799 — 0.0800) (0.0598 — 0.0600)
59.742 — 59.758
(2.3520 — 2.3527) (2.0368 — 2.0374)
2.129 — 2.132
(0.0838 — 0.0839) (0.0638 — 0.0639)
Unit: mm (in)
51.984 — 52.000
1.492 — 1.501
51.954 — 51.970
1.510 — 1.513
51.934 — 51.950
1.520 — 1.523
51.734 — 51.750
1.620 — 1.623