Subaru Impreza 2003 Service Manual page 1082

MECHANICAL
Journal O.D.
Standard
Bearing size
(Thickness at cen-
ter)
Journal O.D.
0.03 (0.0012)
Bearing size
undersize
(Thickness at cen-
ter)
Journal O.D.
0.05 (0.0020)
Bearing size
undersize
(Thickness at cen-
ter)
Journal O.D.
0.25 (0.0098)
Bearing size
undersize
(Thickness at cen-
ter)
O.D.: Outer Diameter
4) Measure the thrust clearance of crankshaft at
center bearing. If the clearance exceeds the limit,
replace the bearing.
Crankshaft thrust clearance:
Standard
0.030 — 0.115 mm (0.0012 — 0.0045 in)
Limit
0.25 mm (0.0098 in)
5) Inspect individual crankshaft bearings for signs
of flaking, seizure, melting, and wear.
CYLINDER BLOCK
Crank journal diameter
#1, #3, #5
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)
6) Measure the oil clearance on each crankshaft
bearing by means of plastigauge. If the measure-
ment is not within the specification, replace the de-
fective bearing with an undersize one, and replace
or recondition the crankshaft as necessary.
#1
#2
#3
#4
#5
ME-00313
ME(H4DOTC)-108
#2, #4
59.992 — 60.008
(2.3619 — 2.3625)
2.000 — 2.013
(0.0787 — 0.0793)
59.962 — 59.978
(2.3607 — 2.3613)
2.019 — 2.022
(0.0795 — 0.0796)
59.942 — 59.958
(2.3599 — 2.3605)
2.029 — 2.032
(0.0799 — 0.0800)
59.742 — 59.758
(2.3520 — 2.3527)
2.129 — 2.132
(0.0838 — 0.0839)
Crankshaft oil clearance
STD 0.003 — 0.030 (0.0001 — 0.0012)
Limit 0.040 (0.0016)
STD 0.012 — 0.033 (0.0005 — 0.0013)
Limit 0.045 (0.0018)
STD 0.003 — 0.030 (0.0001 — 0.0012)
Limit 0.040 (0.0016)
STD 0.012 — 0.033 (0.0005 — 0.0013)
Limit 0.045 (0.0018)
STD 0.010 — 0.031 (0.0004 — 0.0012)
Limit 0.040 (0.0016)
Unit: mm (in)
Crank pin diameter
51.984 — 52.000
(2.0466 — 2.0472)
1.486 — 1.498
(0.0585 — 0.0590)
51.954 — 51.970
(2.0454 — 2.0461)
1.504 — 1.512
(0.0592 — 0.0595)
51.934 — 51.950
(2.0447 — 2.0453)
1.514 — 1.522
(0.0596 — 0.0599)
51.734 — 51.750
(2.0368 — 2.0374)
1.614 — 1.622
(0.0635 — 0.0639)
Unit: mm (in)