1999 SUBARU LEGACY sensor

IPress-in the push adjuster rod gradually tak-
ing more than three minutes.
IDo not allow press pressure to exceed 9,807
N (1,000 kg, 2,205 lb).
IPress the adjuster rod as far as the end sur-
face of the cylinder. Do not press the adjuster
rod into the cylinder. Doing so may damage the
cylinder.
4) Measure the extension of rod beyond the body.
If it is not within specifications, replace with a new
one.
Rod extension: H
5.7
±0.5 mm (0.224±0.020 in)
H2M2381A
3. BELT TENSION PULLEY
1) Check mating surfaces of timing belt and con-
tact point of adjuster rod for abnormal wear or
scratches. Replace automatic belt tension adjuster
assembly if faulty.
2) Check tension pulley for smooth rotation.
Replace if noise or excessive play is noted.
3) Check tension pulley for grease leakage.
4. BELT IDLER
1) Check belt idler for smooth rotation. Replace if
noise or excessive play is noted.
2) Check belt outer contacting surfaces of idler
pulley for abnormal wear and scratches.
3) Check belt idler for grease leakage.
5. CAMSHAFT AND CRANKSHAFT
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. CAMSHAFT AND CRANKSHAFT SPROCKET
B2M2598A
(1) Tensioner bracket
(2) Belt cover No. 2 (RH)
(3) Belt cover No. 2 (LH)
(4) Crankshaft sprocket(5) Camshaft sprocket No. 1
(6) Camshaft sprocket No. 2Tightening torque: N´m (kg-m, ft-lb)
T1:
5±1 (0.5±0.1, 3.6±0.7)
T2:25±3 (2.5±0.3, 18.1±2.2)
T3:78±5 (8.0±0.5, 57.9±3.6)
19
[W2C1]2-3aSERVICE PROCEDURE
2. Timing Belt

1) Install tensioner bracket.
H2M2380
2) Install belt cover No. 2 (RH).
3) Install belt cover No. 2 (LH).
B2M2601
4) Install crankshaft sprocket.
B2M2600A
S2M0414A
5) Install camshaft sprocket No. 1. To lock
camshaft, use ST.
ST 499207400 CAMSHAFT SPROCKET
WRENCH
B2M2599A
6) Install camshaft sprocket No. 2. To lock
camshaft, use ST.
ST 499207100 CAMSHAFT SPROCKET
WRENCH
CAUTION:
Do not confuse left and right side camshaft
sprockets during installation. The camshaft
sprocket No. 2 is identified by a projection
used to monitor camshaft position sensor.
H2M2377A
20
2-3a[W2C1]SERVICE PROCEDURE
2. Timing Belt

4. Camshaft
A: REMOVAL
1. RELATED PARTS
Remove timing belt, camshaft sprockets and
related parts.
2. CAMSHAFT (LH)
B2M2610A
(1) Bolt
(2) Oil level gauge guide(3) Camshaft cap
(4) Camshaft (LH)(5) Oil seal
(6) Plug
1) Remove camshaft position sensor.
CAUTION:
Do not damage the camshaft position sensor.
2) Remove oil level gauge guide attaching bolt.
3) Remove oil level gauge guide.
4) Remove camshaft position sensor support.
5) Remove camshaft cap.
(1) Remove valve rocker assembly.

B2M2606
(2) Remove bolts (a) through (b) in alphabetical
sequence.
B2M2612A
32
2-3a[W4A1]SERVICE PROCEDURE
4. Camshaft

(4) Tighten bolts (a) through (h) in alphabetical
sequence.
Tightening torque:
25
±2 N´m (2.5±0.2 kg-m, 18.1±1.4 ft-lb)
B2M2621B
(5) Tighten TORX bolts (i) through (n) in alpha-
betical sequence using ST.
ST 499497000 TORX PLUS
Tightening torque:
18
±2 N´m (1.8±0.2 kg-m, 13.0±1.4 ft-lb)
B2M2621C
(6) Tighten bolts (o) through (v) in alphabetical
sequence.
Tightening torque:
10
±2 N´m (1.0±0.2 kg-m, 7.2±1.4 ft-lb)
B2M2621D
(7) Tighten bolts (w) through (x) in alphabetical
sequence.
Tightening torque:
10
±2 N´m (1.0±0.2 kg-m, 7.2±1.4 ft-lb)
B2M2621E
3) Apply a coat of grease to oil seal lips and install
oil seal (A) on camshaft using ST1 and ST2.
CAUTION:
Use a new oil seal.
ST1 499597000 OIL SEAL GUIDE
ST2 499587500 OIL SEAL INSTALLER
B2M2622A
4) Install plug using ST.
ST 499587100 OIL SEAL INSTALLER
5) Install oil level gauge guide.
6) Install camshaft position sensor support.
37
[W4C1]2-3aSERVICE PROCEDURE
4. Camshaft

5. Cylinder Head
A: REMOVAL
1. RELATED PARTS
1) Release fuel pressure.
2) Drain engine coolant.
3) Remove V-belt(s).
4) Remove generator and bracket.
5) Remove A/C compressor and bracket. (With
A/C model)6) Disconnect spark plug cords.
7) Remove connector bracket attaching bolt.
8) Remove camshaft position sensor and cam-
shaft position sensor support.
9) Disconnect oil pressure switch connector.
10) Disconnect blow-by hose.
11) Remove intake manifold. [W4A0].>
2. CYLINDER HEAD
B2M2627A
(1) Rocker cover
(2) Cylinder head bolt(3) Cylinder head
(4) Cylinder head gasket
1) Remove timing belt, camshaft sprocket and
related parts.

2) Remove oil level gauge guide attaching bolt
(left hand only) and oil level gauge guide.
3) Remove rocker cover.
40
2-3a[W5A1]SERVICE PROCEDURE
5. Cylinder Head

2) Tighten cylinder head bolts.
(1) Apply a coat of engine oil to washers and
bolt threads.
(2) Tighten all bolts to 29 N´m (3.0 kg-m, 22
ft-lb) in alphabetical sequence.
Then tighten all bolts to 69 N´m (7.0 kg-m, 51
ft-lb) in alphabetical sequence.
(3) Back off all bolts by 180É first; back them off
by 180É again.
(4) Tighten bolts (a) and (b) to 34 N´m (3.5
kg-m, 25 ft-lb).
(5) Tighten bolts (c), (d), (e) and (f) to 15 N´m
(1.5 kg-m, 11 ft-lb).
(6) Tighten all bolts by 80 to 90É in alphabetical
sequence.
CAUTION:
Do not tighten bolts more than 90É.
(7) Further tighten all bolts by 80 to 90É in
alphabetical sequence.
CAUTION:
Ensure that the total ªre-tightening angleº [in
the former two steps], do not exceed 180É.
B2M2628B
3) Install oil level gauge guide and tighten attach-
ing bolt (left side only).
4) Install timing belt, camshaft sprocket and
related parts.

2. RELATED PARTS
CAUTION:
Be careful not to scratch the mating surface of
cylinder block and oil pump.
1) Install engine coolant pipe.
2) Install intake manifold.
3) Connect blow-by hose.
4) Connect oil pressure switch connector.
5) Install camshaft position sensor and camshaft
position sensor support.
6) Install connector bracket attaching bolt.
7) Connect spark plug cords.
8) Install generator and bracket.
9) Install A/C compressor and bracket. (With A/C
model)
10) Install V-belt(s).
11) Remove ENGINE STAND (ST).
50
2-3a[W5E2]SERVICE PROCEDURE
5. Cylinder Head

(1) Slowly press the adjuster rod down to the
end surface of the cylinder. Repeat this motion
2 or 3 times.
(2) With the adjuster rod moved all the way up,
apply a pressure of 294 N (30 kg, 66 lb) to it.
Check adjuster rod stiffness.
(3) If the adjuster rod is not stiff and moves
down, replace the automatic belt tension
adjuster assembly with a new one.
CAUTION:
IAlways use a vertical type pressing tool to
move the adjuster rod down.
IDo not use a lateral type vise.
IPush adjuster rod vertically.
IPress-in the push adjuster rod gradually tak-
ing more than three minutes.
IDo not allow press pressure to exceed 9,807
N (1,000 kg, 2,205 lb).
IPress the adjuster rod as far as the end sur-
face of the cylinder. Do not press the adjuster
rod into the cylinder. Doing so may damage the
cylinder.
4) Measure the extension of rod beyond the body.
If it is not within specifications, replace with a new
one.
Rod extension: H
5.7
±0.5 mm (0.224±0.020 in)
H2M2381A
3. BELT TENSION PULLEY
1) Check mating surfaces of timing belt and con-
tact point of adjuster rod for abnormal wear or
scratches. Replace belt tension pulley if faulty.
2) Check belt tension pulley for smooth rotation.
Replace if noise or excessive play is noted.
3) Check belt tension pulley 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.
20
2-3b[W2B3]SERVICE PROCEDURE
2. Timing Belt

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

2. CAMSHAFT
S2M0298A
(1) Spark plug cord
(2) Rocker cover (LH)
(3) Rocker cover gasket (LH)(4) Intake camshaft cap (LH)
(5) Intake camshaft (LH)
(6) Exhaust camshaft cap (LH)(7) Exhaust camshaft (LH)
1) Remove camshaft position sensor (LH side
only).
2) Remove spark plug cord.
3) Remove rocker cover and gasket.4) Loosen intake camshaft cap bolts equally, a
little at a time in alphabetical sequence shown in
figure.
B2M1393B
5) Remove camshaft caps and intake camshaft.
30
2-3b[W3A1]SERVICE PROCEDURE
3. Camshaft