1997 SUBARU LEGACY 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

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.
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.
19
2-3bSERVICE PROCEDURE
2. Timing Belt

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.
C: INSTALLATION
1. SPROCKET
B2M0691B
Tightening torque: N⋅m (kg-m, ft-lb)
T1: 4.9±0.5 (0.5±0.05, 3.6±0.4)
T2: 25±2 (2.5±0.2, 18±1.4)
T3: 78±5 (8.0±0.5, 58±3.6)
B2M0738
1) Install right-hand belt cover No. 2.
20
2-3bSERVICE PROCEDURE
2. Timing Belt

B2M0737
2) Install left-hand belt cover No. 2.
B2M0736
3) Install tensioner bracket.
4) Install crankshaft sprocket.
H2M1294A
5) Install right-hand exhaust camshaft sprocket. To lock
camshaft, use ST.
6) Install right-hand intake camshaft sprocket using ST.
7) Install left-hand exhaust camshaft sprocket using ST.
8) Install left-hand intake camshaft sprocket using ST.
ST 499207300 CAMSHAFT SPROCKET WRENCH
21
2-3bSERVICE PROCEDURE
2. Timing Belt

2. BELT TENSIONER AND IDLER
B2M0690B
Tightening torque: N⋅m (kg-m, ft-lb)
T1: 25±2 (2.5±0.2, 18±1.4)
T2: 39±4 (4.0±0.4, 29±2.9)
G2M0119
1) Installation of belt tensioner adjuster
(1) Insert stopper pin 1.5 mm (0.059 in) dia. 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 min-
utes or more.
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2-3bSERVICE PROCEDURE
2. Timing Belt

G2M0725
(2) Temporarily tighten bolts while tension adjuster is
pushed all the way to the right.
G2M0726
2) Install belt tensioner.
3) Install belt idler.
4) Install belt idler No. 2.
3. TIMING BELT
B2M0693A
Tightening torque: N⋅m (kg-m, ft-lb)
T: 39±4 (4.0±0.4, 29±2.9)
23
2-3bSERVICE PROCEDURE
2. Timing Belt