Subaru IMPREZA 2002 Service Manual page 158

CAMSHAFT
MECHANICAL
, Intake
I---
Exhaust
C: INSPECTION
1. CAMSHAFT
1) Measure the bend, and repair or replace if nec-
essary.
Limit:
0.025 mm (0.0010 in)
2) Check the journal for damage and wear. Re-
place if fqulty.
3) Measure the outside diameter of camshaft jour-
nal and inside diameter of cylinder head journal,
and determine the difference between the two (= oil
clearance). If the oil clearance exceeds specifica-
tions, replace the camshaft or cylinder head as
necessary.
Unit: mm (in)
Tear-
I
Standard
I
0.055
-
0.090 (0.0022
-
0.0035)
0 . 1 0 (0.0039)
ance at
journal
Camshaft journal O.D.
Limit
31.928
-
31.945 (1.2570 -
1.2577)
I
32.000
-
32.01 8 (1.2598
-
1.2605)
Journal hole I.D.
4) Check the cam face condition; remove the minor
faults by grinding with oil stone. Measure the cam
height H; replace if the limit has been exceeded.
Cam height: H
I
Item
I
Unit: mm (in)
39.485
-
39.585
(1.5545
-
1.5585)
Limit
39.385 (1.5506)
:
(1.5455 39.257
- -
39.357 1.5495)
Cam base circle diameter A:
IN: 34.00 mm (1.3386 in)
EX: 34.00 mm (1.3386 in)
B2M1209A
A
2. CAMSHAFT SUPPORT
Measure the thrust clearance of camshaft with dial
gauge. If the clearance exceeds the limit, replace
the camshaft support.
Standard:
Limit:
0.030
-
0.090 mm (0.0012
-
0.0035 in)
0.10 mm (0.0039 in)
a
M E(S0HC)-60