Subaru 2009 IMPREZA, Service Manual

Page: 309 / 3619

ME(H4SO)-91
Cylinder Block
MECHANICAL
8) The replacement procedure for the connecting
rod small end bushing is as follows.
(1) Remove the bushing from connecting rod
with ST and press.
(2) Press the bushing with the ST after applying
oil on the periphery of new bushing.
ST 499037100 CONNECTING ROD
BUSHING REMOVER AND
INSTALLER
(3) Make two 3 mm (0.12 in) holes in the
pressed bushing to match the pre-manufac-
tured holes on the connecting rod, then ream
the inside of the bushing.
(4) After completion of reaming, clean the bush-
ing to remove chips.
6. CRANKSHAFT AND CRANKSHAFT
BEARING
1) Clean the crankshaft completely, and check it for
cracks using liquid penetrant tester. If defective, re-
place the crankshaft.
2) Measure warping of the crankshaft. If it exceeds
the limit, correct or replace it.
NOTE:
If a suitable V-block is not available, using just the
#1 and #5 crankshaft bearings on cylinder block,
position the crankshaft on cylinder block. Then,
measure the crankshaft bend using a dial gauge.
Crankshaft bend limit:
0.035 mm (0.0014 in)
3) Inspect the crank journal and crank pin for wear.
If they are not within the standard, replace the bear-
ing with a suitable (undersize) one, and replace or
grind to correct the crankshaft as necessary. When
grinding the crank journal or crank pin, finish them
to the specified dimensions according to the under-
size bearing to be used.
Crank pin
Out-of-roundness
0.003 mm (0.0001 in)
Cylindricality
0.004 mm (0.0002 in)
Grinding limit (dia.)
To 51.750 mm (2.0374 in)
Crank journal
Out-of-roundness
0.005 mm (0.0002 in)
Cylindricality
0.006 mm (0.0002 in)
Grinding limit (dia.)
To 59.758 mm (2.3527 in)
ME-00182
ST
ME-00183
ME-00184