1999 SUBARU LEGACY Service Repair Manual

3) Measure outside diameter of camshaft journal
and inside diameter of cylinder head journal, and
determine the difference between the two (= oilclearance). If oil clearance exceeds specifications,
replace camshaft or cylinder head as necessary.
Unit: mm (in)
Clearance at journalStandard 0.055 Ð 0.090 (0.0022 Ð 0.0035)
Limit 0.118 (0.0046)
Camshaft journal O.D. 31.928 Ð 31.945 (1.2570 Ð 1.2577)
Journal hole I.D. 32.000 Ð 32.018 (1.2598 Ð 1.2605)
4) 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
Unit: mm (in)
Item Standard Limit
Intake34.00 Ð 38.782
(1.3386 Ð 1.5268)33.84 (1.3323)
Exhaust34.00 Ð 39.307
(1.3386 Ð 1.5475)33.84 (1.3323)
Cam base circle diameter A:
IN: 27.5 mm (1.083 in)
EX: 27.0 mm (1.063 in)
B2M1209A
2. CAMSHAFT SUPPORT
Measure the thrust clearance of camshaft with dial
gauge. If the clearance exceeds the limit, replace
camshaft support.
Standard:
0.030 Ð 0.090 mm (0.0012 Ð 0.0035 in)
Limit:
0.11 mm (0.0043 in)
B2M2618A
35
[W4B2]2-3aSERVICE PROCEDURE
4. Camshaft

C: INSTALLATION
1. CAMSHAFT (LH)
B2M2610B
(1) Camshaft (LH)
(2) Camshaft cap(3) Plug
(4) Oil seal(5) Oil level gauge guide
(6) Bolt
1) Apply a coat of engine oil to camshaft journals
and install camshaft (LH).
2) Install camshaft cap.
(1) Apply liquid gasket on the around of cam-
shaft cap.
Liquid gasket:
THREE BOND 1280B (Part No.
0029431130)
B2M2619
(2) Temporarily tighten bolts (g) through (j) in
alphabetical sequence.
B2M2612A
(3) Install valve rocker assembly.

B2M2606
36
2-3a[W4C1]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

2. CAMSHAFT (RH)
B2M2614A
(1) Camshaft support (RH)
(2) O-ring(3) Camshaft (RH)
(4) Oil seal(5) Plug
1) Apply a coat of engine oil to camshaft journals
and install camshaft (RH).
2) Install camshaft cap.
(1) Apply liquid gasket on the around of cam-
shaft cap.
Liquid gasket:
THREE BOND 1280B (Part No.
0029431130)
B2M2619
(2) Temporarily tighten bolts (g) through (j) in
alphabetical sequence.
B2M2612A
(3) Install valve rocker assembly.

B2M2615
38
2-3a[W4C2]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 499427000 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 (o) through (p) 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
B2M2623A
4) Install plug using ST.
ST 499587100 OIL SEAL INSTALLER
3. RELATED PARTS
Install timing belt, camshaft sprockets and related
parts.

39
[W4C3]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

4) Remove cylinder head bolts in alphabetical
sequence shown in figure.
CAUTION:
Leave bolts (a) and (c) engaged by three or four
threads to prevent cylinder head from falling.
B2M2628A
5) While tapping cylinder head with a plastic
hammer, separate it from cylinder block.
6) Remove bolts (a) and (b) to remove cylinder
head.
B2M2628A
7) Remove cylinder head gasket.
CAUTION:
Do not scratch the mating surface of cylinder
head and cylinder block.
8) Similarly, remove right side cylinder head.
41
[W5A2]2-3aSERVICE PROCEDURE
5. Cylinder Head

B: DISASSEMBLY
B2M2629A
(1) Valve rocker ASSY
(2) Camshaft cap
(3) Camshaft
(4) Oil seal
(5) Plug(6) Spark plug pipe gasket
(7) Retainer key
(8) Retainer
(9) Valve spring
(10) Oil seal(11) Valve spring seat
(12) Valve guide
(13) Valve
1) Remove valve rocker assembly, camshaft cap
and camshaft.
2) Remove oil seal.
3) Remove plug.
4) Place cylinder head on ST.
ST 498267800 CYLINDER HEAD TABLE5) Set ST on valve spring. Compress valve spring
and remove the valve spring retainer key. Remove
each valve and valve spring.
ST 499718000 VALVE SPRING REMOVER
CAUTION:
IMark each valve to prevent confusion.
IUse extreme care not to damage the lips of
the intake valve oil seals and exhaust valve oil
seals.
B2M2630A
42
2-3a[W5B0]SERVICE PROCEDURE
5. Cylinder Head