SUBARU LEGACY 1997 Service Repair Manual

4. SPROCKET
B2M0416A
G2M0114
1) Remove left side camshaft sprocket.
2) Remove right side camshaft sprocket. To lock camshaft
use ST.
ST 499207100 CAMSHAFT SPROCKET WRENCH
3) Remove crankshaft sprocket.
4) Remove left side belt cover No. 2.
5) Remove right side belt cover No. 2.
CAUTION:
Do not damage or lose the seal rubber when removing
belt covers.
6) Remove tensioner bracket.
19
2-3SERVICE PROCEDURE
3. Timing Belt

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
2. BELT TENSION ADJUSTER
1) Visually check oil seals for leaks, and rod ends for
abnormal wear or scratches. If necessary, replace belt ten-
sion adjuster.
CAUTION:
Slight traces of oil at rod’s oil seal does not indicate a
problem.
2) While holding tensioner with both hands, push the rod
section against floor or wall ensuring the rod section will
react as follows:
(1) When applying a force of 147 N (15 kg, 33 lb), the
rod section should not sink.
(2) When applying a force of 147 to 490 N (15 to 50 kg,
33 to 110 lb), the rod section should maintain a projec-
tionally acting force and should not sink within 8.5 sec-
onds.
20
2-3SERVICE PROCEDURE
3. Timing Belt

B2M0108A
3) Measure the extension of rod beyond the body. If it is
not within specifications, replace with a new one.
Rod extension: H
15.4 — 16.4 mm (0.606 — 0.646 in)
3. BELT TENSIONER
1) Check mating surfaces of timing belt and contact point
of tension adjuster rod for abnormal wear or scratches.
Replace belt tensioner if faulty.
2) Check spacer and tensioner bushing for wear.
3) Check tensioner for smooth rotation. Replace if noise or
excessive play is noted.
4) Check tensioner for grease leakage.
4. BELT IDLER
1) Check idler for smooth rotation. Replace if noise or
excessive play is noted.
2) Check outer contacting surfaces of idler pulley for
abnormal wear and scratches.
3) Check idler for grease leakage.
5. SPROCKET
1) Check sprocket teeth for abnormal wear and scratches.
2) Make sure there is no free play between sprocket and
key.
3) Check crankshaft sprocket notch for sensor for damage
and contamination of foreign matter.
21
2-3SERVICE PROCEDURE
3. Timing Belt

C: INSTALLATION
1. SPROCKET
B2M0416B
Tightening torque: N⋅m (kg-m, ft-lb)
T1: 5±1 (0.5±0.1, 3.6±0.7)
T2: 25±2 (2.5±0.2, 18.1±1.4)
T3: 78±5 (8.0±0.5, 57.9±3.6)
G2M0114
1) Install right side belt cover No. 2.
2) Install tensioner bracket.
3) Install left side belt cover No. 2.
4) Install crankshaft sprocket.
5) Install right side camshaft sprocket and left side cam-
shaft sprocket. To lock camshaft use ST.
ST 499207100 CAMSHAFT SPROCKET WRENCH
CAUTION:
Do not confuse left and right side camshaft sprockets
during installation. The left side camshaft sprocket is
identified by a projection used to monitor cam angle
sensor.
22
2-3SERVICE PROCEDURE
3. Timing Belt

2. BELT TENSIONER AND IDLER
B2M0070A
Tightening torque: N⋅m (kg-m, ft-lb)
T: 39±4 (4.0±0.4, 28.9±2.9)
B2M0109A
1) Installation of belt tension adjuster
Insert stopper pin 1.5 mm (0.059 in) diameter into place
while pushing tension adjuster rod into body using a press.
CAUTION:
Do not allow press pressure to exceed 9,807 N (1,000
kg, 2,205 lb).
Do not release press pressure until stopper pin is
completely inserted.
Push tension adjuster rod vertically.
Press-in the push rod gradually taking three minutes
or more.
23
2-3SERVICE PROCEDURE
3. Timing Belt

2) Install belt tensioner and spacer.
3) Install belt idler.
B2M0110
4) Temporarily tighten bolts while belt tension adjuster is
pushed all the way to the right.
3. TIMING BELT
B2M0071A
Tightening torque: N⋅m (kg-m, ft-lb)
T1: 25±2 (2.5±0.2, 18.1±1.4)
T2: 39±4 (4.0±0.4, 28.9±2.9)
24
2-3SERVICE PROCEDURE
3. Timing Belt

G2M0122
1) Installation of timing belt
(1) Using ST, turn left and right camshaft sprockets so
that their alignment marks come to top positions.
ST 499207100 CAMSHAFT SPROCKET WRENCH
B2M0417A
(2) While aligning alignment mark on timing belt with
marks on sprockets, position timing belt properly.
CAUTION:
Ensure belt’s rotating direction is correct.
2) Install belt idler No. 2.
3) Install belt idler.
B2M0111
4) Loosen belt tension adjuster attaching bolts and move
adjuster all the way to the left. Tighten the bolts.
G2M0125
5) After ensuring that the marks on timing belt and cam-
shaft sprockets are aligned, remove stopper pin from belt
tension adjuster.
CAUTION:
After properly installing timing belt, remove rocker
cover and ensure that the valve lash adjuster contains
no air.
25
2-3SERVICE PROCEDURE
3. Timing Belt

4. CRANKSHAFT PULLEY AND BELT COVER
G2M0126
Tightening torque: N⋅m (kg-m, ft-lb)
T1: 5±1 (0.5±0.1, 3.6±0.7)
T2: 127±10 (13.0±1.0, 94±7)
1) Install front belt cover.
2) Install right side belt cover.
3) Install left side belt cover.
4) Install crankshaft pulley.
G2M0108
5) Install pulley bolt.
To lock crankshaft, use ST.
ST 499977000 CRANKSHAFT PULLEY WRENCH
6) Install V-belt.
26
2-3SERVICE PROCEDURE
3. Timing Belt

4. Valve Rocker Assembly
A: REMOVAL
B2M1206A
B2M1207A
1) Disconnect PCV hose and remove rocker cover.
2) Removal of valve rocker assembly
(1) Remove bolts

1through
4in numerical sequence.
CAUTION:
Leave two or three threads of bolt

1engaged to retain
valve rocker assembly.
(2) Equally loosen bolts

5through
8all the way, being
careful that knock pin is not gouged.
(3) Remove valve rocker assembly.
27
2-3SERVICE PROCEDURE
4. Valve Rocker Assembly

B: DISASSEMBLY
B2M1264A
1) Remove bolts which secure rocker shaft.
2) Extract rocker shaft. Remove valve rocker arms,
springs and shaft supports from rocker shaft.
CAUTION:
Arrange all removed parts in order so that they can be
installed in their original positions.
3) Loosen rocker nut, and then remove rocker screw and
nut from rocker arm.
CAUTION:
Do not remove rocker screw and nut unless necessary.
28
2-3SERVICE PROCEDURE
4. Valve Rocker Assembly