remove SUBARU LEGACY 1997 Service Manual Online

B2M0730
5) Remove right-hand belt cover.
B2M0731
6) Remove front belt cover.
13
2-3bSERVICE PROCEDURE
2. Timing Belt

B2M0687A
(2) Using white paint, put alignment and/or arrow
marks on timing belts in relation to the sprockets.
Z
1: 54.5 tooth length
Z
2: 51 tooth length
Z
3: 28 tooth length
B2M0688
B2M0689
G2M0739
2) Loosen tensioner adjuster mounting bolts.
3) Remove belt idler.
B2M0733
4) Remove timing belt.
5) Remove belt idler No. 2.
CAUTION:
After timing belt has been removed, never rotate intake
and exhaust, camshaft sprocket.
If camshaft sprocket is rotated, the intake and exhaust
valve heads strike together and valve stems are bent.
15
2-3bSERVICE PROCEDURE
2. Timing Belt

3. BELT TENSIONER AND IDLER
B2M0690A
B2M0732
1) Remove belt idler.
B2M0733
2) Remove belt idler No. 2.
B2M0734
3) Remove belt tensioner and spacer.
16
2-3bSERVICE PROCEDURE
2. Timing Belt

B2M0735
4) Remove belt tension adjuster.
4. SPROCKET
B2M0691A
H2M1294A
1) Remove left-hand intake camshaft sprocket.
2) Remove left-hand exhaust camshaft sprocket.
3) Remove right-hand intake camshaft sprocket.
4) Remove right-hand exhaust camshaft sprocket.
ST 499207300 CAMSHAFT SPROCKET WRENCH
5) Remove crankshaft sprocket.
B2M0736
6) Remove tensioner bracket.
17
2-3bSERVICE PROCEDURE
2. Timing Belt

B2M0737
7) Remove left-hand belt cover No. 2.
B2M0738
8) Remove right-hand belt cover No. 2.
B: INSPECTION
1. TIMING BELT
1) Check timing belt teeth for breaks, cracks, and wear. If
any fault is found, replace belt.
2) Check the condition of back side of belt; if any crack is
found, replace belt.
CAUTION:
Be careful not to let oil, grease or coolant contact
the belt. Remove quickly and thoroughly if this hap-
pens.
G2M0115
Do not bend the belt sharply.
Bending radius: h
60 mm (2.36 in) or more
18
2-3bSERVICE PROCEDURE
2. Timing Belt

(6) Ensure camshaft and crankshaft sprockets are
positioned as shown.
G2M0734
G2M0735
CAUTION:
Intake and exhaust camshafts for this DOHC engine
can be independently rotated with timing belts
removed. As can be seen from the figure, if intake and
exhaust valves are lifted simultaneously, their heads
will interfere with each other, resulting in bent valves.
25
2-3bSERVICE PROCEDURE
2. Timing Belt

G2M0739
3) Install belt idler.
CAUTION:
Make sure that the marks on timing belt and sprockets
are aligned.
B2M0700
4) Loosen tension adjuster attaching bolts and move
adjuster all the way to the left. Tighten the bolts.
G2M0741
5) After ensuring that the marks on timing belt and sprock-
ets are aligned, remove stopper pin from tension adjuster.
27
2-3bSERVICE PROCEDURE
2. Timing Belt

3. Camshaft
A: REMOVAL
1. RELATED PARTS
Remove timing belt, camshaft sprockets and related parts.

2. CAMSHAFT LH
G2M0743
1) Remove camshaft position sensor.
2) Remove ignition coils.
3) Remove rocker cover and gasket.
G2M0744
4) Loosen intake camshaft cap bolts equally, a little at a
time in the numerical sequence shown in figure.
5) Remove camshaft caps and intake camshaft.
30
2-3bSERVICE PROCEDURE
3. Camshaft

G2M0745
6) Loosen exhaust camshaft cap bolts equally, a little at a
time in the numerical sequence shown in figure.
7) Remove camshaft caps and exhaust camshaft.
CAUTION:
Arrange camshaft caps in order so that they can be
installed in their original positions.
8) Similarly, remove right-hand camshafts and related
parts.
G2M0746
B: INSPECTION
1. CAMSHAFT
1) Measure the bend, and repair or replace if necessary.
Limit:
0.020 mm (0.0008 in)
2) Check journal for damage and wear. Replace if faulty.
3) Measure outside diameter of camshaft journal. If the
journal diameter is not as specified, check the oil clear-
ance.
Camshaft journal
Front Center, rear
Standard31.946—31.963 mm
(1.2577—1.2584 in)27.946—27.963 mm
(1.1002—1.1009 in)
B2M1216
4) Measurement of the camshaft journal oil clearance
(1) Clean the bearing caps and camshaft journals.
(2) Place the camshafts on the cylinder head. (Without
installing valve rocker.)
(3) Place plastigauge across each of the camshaft
journals.
(4) Install the bearing caps.

CAUTION:
Do not turn the camshaft.
(5) Remove the bearing caps.
(6) Measure the widest point of the plastigauge on
each journal.
If the oil clearance exceeds the limit, replace the cam-
shaft. If necessary, replace the camshaft caps and cyl-
inder head as a set.
Standard oil clearance:
0.037—0.072 mm (0.0015—0.0028 in)
Limit:
0.10 mm (0.0039 in)
(7) Completely remove the plastigauge.
31
2-3bSERVICE PROCEDURE
3. Camshaft

B2M1209A
5) Check cam face condition; remove minor faults by
grinding with oil stone. Measure the cam height H; replace
if the limit has been exceeded.
Cam height: H
Standard:
Intake:
42.20—42.30 mm (1.6614—1.6654 in)
Exhaust:
Front: 42.50—42.60 mm (1.6732—1.6772 in)
Rear: 41.40—41.50 mm (1.6299—1.6339 in)
Limit:
Intake:
42.04 mm (1.6551 in)
Exhaust:
Front: 42.34 mm (1.6669 in)
Rear: 41.24 mm (1.6236 in)
Cam base circle diameter A:
28.0 mm (1.102 in)
B2M1217
6) Measure the thrust clearance of camshaft with dial
gauge. If the clearance exceeds the limit, replace caps and
cylinder head as a set. If necessary replace camshaft.
Standard:
0.040—0.080 mm (0.0016—0.0031 in)
Limit:
0.1 mm (0.004 in)
32
2-3bSERVICE PROCEDURE
3. Camshaft