1999 SUBARU LEGACY width

Cylinder
headSurface warpage limit 0.05 mm (0.0020 in)
Surface grinding limit 0.3 mm (0.012 in)
Standard height 97.5 mm (3.839 in)
Valve
setRefacing angle 90É
Contacting widthIntakeSTD 1.0 mm (0.039 in)
Limit 1.7 mm (0.067 in)
ExhaustSTD 1.4 mm (0.055 in)
Limit 2.1 mm (0.083 in)
Valve
guideInner diameter 6.000 Ð 6.012 mm (0.2362 Ð 0.2367 in)
Protrusion above headIntake 20.0 Ð 20.5 mm (0.787 Ð 0.807 in)
Exhaust 16.5 Ð 17.0 mm (0.650 Ð 0.669 in)
ValveHead edge thicknessIntakeSTD 1.0 mm (0.039 in)
Limit 0.6 mm (0.024 in)
ExhaustSTD 1.2 mm (0.047 in)
Limit 0.6 mm (0.024 in)
Stem diameterIntake 5.945 Ð 5.960 mm (0.2341 Ð 0.2346 in)
Exhaust 5.950 Ð 5.965 mm (0.2343 Ð 0.2348 in)
Stem oil clearanceSTDIntake 0.035 Ð 0.062 mm (0.0014 Ð 0.0024 in)
Exhaust 0.040 Ð 0.067 mm (0.0016 Ð 0.0026 in)
Limit Ð 0.15 mm (0.0059 in)
Overall lengthIntake 120.6 mm (4.75 in)
Exhaust 121.7 mm (4.79 in)
Valve
springFree length 54.30 mm (2.1378 in)
Squareness 2.5É, 2.4 mm (0.094 in)
Tension/spring height214.8 Ð 246.2 N
(21.9 Ð 25.1 kg, 48.3 Ð 55.3 lb)/45.0 mm (1.772 in)
526.6 Ð 581.6 N
(53.7 Ð 59.3 kg, 118.4 Ð 130.8 lb)/34.7 mm (1.366 in)
Cylinder
blockSurface warpage limit (mating with cylinder head) 0.05 mm (0.0020 in)
Surface grinding limit 0.1 mm (0.004 in)
Cylinder bore STDA 96.905 Ð 96.915 mm (3.8151 Ð 3.8155 in)
B 96.895 Ð 96.905 mm (3.8148 Ð 3.8151 in)
TaperSTD 0.015 mm (0.0006 in)
Limit 0.050 mm (0.0020 in)
Out-of-roundnessSTD 0.010 mm (0.0004 in)
Limit 0.050 mm (0.0020 in)
Piston clearanceSTD 0.010 Ð 0.030 mm (0.0004 Ð 0.0012 in)
Limit 0.050 mm (0.0020 in)
Enlarging (boring) limit 0.5 mm (0.020 in)
Piston Outer diameterSTDA 96.885 Ð 96.895 mm (3.8144 Ð 3.8148 in)
B 96.875 Ð 96.885 mm (3.8140 Ð 3.8144 in)
0.25 mm (0.0098
in) OS97.125 Ð 97.135 mm (3.8238 Ð 3.8242 in)
0.50 mm (0.0197
in) OS97.375 Ð 97.385 mm (3.8337 Ð 3.8340 in)
Piston
pinStandard clearance between piston
pin and hole in pistonSTD 0.004 Ð 0.008 mm (0.0002 Ð 0.0003 in)
Limit 0.020 mm (0.0008 in)
Degree of fitPiston pin must be fitted into position with thumb at 20ÉC
(68ÉF).
3
[S1B0]2-3aSPECIFICATIONS AND SERVICE DATA
1. Engine

C: INSPECTION
1. CYLINDER HEAD
1) Make sure that no crack or other damage
exists. In addition to visual inspection, inspect
important areas by means of red lead check.
Also make sure that gasket installing surface
shows no trace of gas and water leaks.
2) Place cylinder head on ST.
ST 498267800 CYLINDER HEAD TABLE
3) Measure the warping of the cylinder head sur-
face that mates with crankcase using a straight
edge and thickness gauge.
If the warping exceeds 0.05 mm (0.0020 in),
regrind the surface with a surface grinder.
Warping limit:
0.05 mm (0.0020 in)
Grinding limit:
0.3 mm (0.012 in)
Standard height of cylinder head:
97.5 mm (3.839 in)
CAUTION:
Uneven torque for the cylinder head bolts can
cause warping. When reassembling, pay spe-
cial attention to the torque so as to tighten
evenly.
G2M0148
2. VALVE SEAT
Inspect intake and exhaust valve seats, and cor-
rect the contact surfaces with valve seat cutter if
they are defective or when valve guides are
replaced.
Valve seat width: W
Intake
Standard 1.0 mm (0.039 in)
Limit 1.7 mm (0.067 in)
Exhaust
Standard 1.4 mm (0.055 in)
Limit 2.1 mm (0.083 in)
G2M0149
B2M0074
43
[W5C2]2-3aSERVICE PROCEDURE
5. Cylinder Head

B: SERVICE DATA
NOTE:
STD: Standard, I.D.: Inner Diameter, O.D.: Outer Diameter, OS: Oversize, US: Undersize
Belt ten-
sion
adjusterProtrusion of adjuster rod 5.2 Ð 6.2 mm (0.205 Ð 0.244 in)
Belt ten-
sionerSpacer O.D. 17.955 Ð 17.975 mm (0.7069 Ð 0.7077 in)
Tensioner bush I.D. 18.00 Ð 18.08 mm (0.7087 Ð 0.7118 in)
Clearance between spacer and
bushSTD 0.025 Ð 0.125 mm (0.0010 Ð 0.0049 in)
Limit 0.175 mm (0.0069 in)
Side clearance of spacerSTD 0.2 Ð 0.55 mm (0.0079 Ð 0.0217 in)
Limit 0.81 mm (0.0319 in)
CamshaftBend limit 0.020 mm (0.0008 in)
Thrust clearanceSTD 0.040 Ð 0.080 mm (0.0016 Ð 0.0031 in)
Limit 0.10 mm (0.0039 in)
Cam lobe heightIntakeSTD 42.20 Ð 42.30 mm (1.6614 Ð 1.6654 in)
Limit 42.04 mm (1.6551 in)
ExhaustSTDFront: 42.50 Ð 42.60 mm
Rear: 41.40 Ð 41.50 mm(1.6732 Ð 1.6772 in) (1.6299
Ð 1.6339 in)
LimitFront: 42.34 mm Rear: 41.24
mm(1.6669 in) (1.6236 in)
Camshaft journal O.D.Front 31.946 Ð 31.963 mm (1.2577 Ð 1.2584 in)
Center 27.946 Ð 27.963 mm (1.1002 Ð 1.1009 in)
Rear 27.946 Ð 27.963 mm (1.1002 Ð 1.1009 in)
Camshaft journal hole I.D.Front 32.000 Ð 32.018 mm (1.2598 Ð 1.2605 in)
Center 28.000 Ð 28.018 mm (1.1024 Ð 1.1031 in)
Rear 28.000 Ð 28.018 mm (1.1024 Ð 1.1031 in)
Oil clearanceSTD 0.037 Ð 0.072 mm (0.0015 Ð 0.0028 in)
Limit 0.10 mm (0.0039 in)
Cylinder
headSurface warpage limit 0.05 mm (0.0020 in)
Surface grinding limit 0.3 mm (0.012 in)
Standard height 127.5 mm (5.02 in)
Valve seatRefacing angle 90É
Contacting widthIntakeSTD 1.0 mm (0.039 in)
Limit 1.7 mm (0.067 in)
ExhaustSTD 1.5 mm (0.059 in)
Limit 2.2 mm (0.087 in)
Valve guideInner diameter 6.000 Ð 6.015 mm (0.2362 Ð 0.2368 in)
Protrusion above head 12.0 Ð 12.4 mm (0.472 Ð 0.488 in)
ValveHead edge thicknessIntakeSTD 1.2 mm (0.047 in)
Limit 0.8 mm (0.031 in)
ExhaustSTD 1.5 mm (0.059 in)
Limit 0.8 mm (0.031 in)
Stem diameterIntake 5.950 Ð 5.965 mm (0.2343 Ð 0.2348 in)
Exhaust 5.950 Ð 5.965 mm (0.2343 Ð 0.2348 in)
Stem oil clearanceSTDIntake 0.035 Ð 0.062 mm (0.0014 Ð 0.0024 in)
Exhaust 0.040 Ð 0.067 mm (0.0016 Ð 0.0026 in)
Limit Ð 0.15 mm (0.0059 in)
Overall lengthIntake 105.9 mm (4.169 in)
Exhaust 106.2 mm (4.181 in)
3
[S1B0]2-3bSPECIFICATIONS AND SERVICE DATA
1. Engine

2. VALVE SEAT
Inspect intake and exhaust valve seats, and cor-
rect the contact surfaces with valve seat cutter if
they are defective or when valve guides are
replaced.
Valve seat width: W
Intake
Standard
1.0 mm (0.039 in)
Limit
1.7 mm (0.067 in)
Exhaust
Standard
1.5 mm (0.059 in)
Limit
2.2 mm (0.087 in)
G2M0761
3. VALVE GUIDE
1) Check the clearance between valve guide and
stem. The clearance can be checked by measur-
ing the outside diameter of valve stem and the
inside diameter of valve guide with outside and
inside micrometers respectively.
Clearance between the valve guide and valve
stem:
Standard
Intake
0.035 Ð 0.062 mm (0.0014 Ð 0.0024 in)
Exhaust
0.040 Ð 0.067 mm (0.0016 Ð 0.0026 in)
Limit
0.15 mm (0.0059 in)
Valve guide inner diameter:
6.000 Ð 6.015 mm (0.2362 Ð 0.2368 in)
Valve stem outer diameter:
Intake
5.950 Ð 5.965 mm (0.2343 Ð 0.2348 in)
Exhaust
5.950 Ð 5.965 mm (0.2343 Ð 0.2348 in)
2) If the clearance between valve guide and stem
exceeds the specification, replace guide as fol-
lows:
(1) Place cylinder head on ST1 with the com-
bustion chamber upward so that valve guides
enter the holes in ST1.
(2) Insert ST2 into valve guide and press it
down to remove valve guide.
ST1 498267600 CYLINDER HEAD TABLE
ST2 499767200 VALVE GUIDE REMOVER
G2M0762
(3) Turn cylinder head upside down and place
ST as shown in the figure.
ST 498267700 VALVE GUIDE ADJUSTER
G2M0763
(4) Before installing new valve guide, make
sure that neither scratches nor damages exist
on the inside surface of the valve guide holes in
cylinder head.
39
[W4C3]2-3bSERVICE PROCEDURE
4. Cylinder Head

1. Specifications
A: 2200 cc MODEL
Lubrication methodForced lubrication
Oil pumpPump type Trochoid type
Number of teethInner rotor 9
Outer rotor 10
Outer rotor diameter´thickness 78´9 mm (3.07´0.35 in)
Tip clearance between inner and outer rotorSTANDARD 0.04 Ð 0.14 mm (0.0016 Ð 0.0055 in)
LIMIT 0.18 mm (0.0071 in)
Side clearance between inner rotor and
pump caseSTANDARD 0.02 Ð 0.07 mm (0.0008 Ð 0.0028 in)
LIMIT 0.15 mm (0.0059 in)
Case clearance between outer rotor and
pump caseSTANDARD 0.10 Ð 0.175 mm (0.0039 Ð 0.0069 in)
LIMIT 0.20 mm (0.0079 in)
Capacity at
80ÉC (176ÉF)700 rpm Discharge- pressure 98 kPa (1.0 kg/cm
2, 14 psi) or more
- quantity 4.2(4.4 US qt, 3.7 Imp qt)/min.
5,000 rpm Discharge- pressure 294 kPa (3.0 kg/cm
2, 43 psi) or more
- quantity 42.0(11.10 US gal, 9.24 Imp gal)/min.
Relief valve operation pressure 490 kPa (5.0 kg/cm
2, 71 psi)
Oil filterTypeFull-flow filter type
Filtration area 1,000 cm
2(155 sq in)
By-pass valve opening pressure 157 kPa (1.6 kg/cm2, 23 psi)
Outer diameter´width 80´70 mm (3.15´2.76 in)
Oil filter to engine thread size M 20´1.5
Relief valve (on rocker shaft) operation pressure 69 kPa (0.7 kg/cm
2, 10 psi)
Oil pressure
switchType Immersed contact point type
Working voltage Ð wattage 12 V Ð 3.4 W or less
Warning light activation pressure 14.7 kPa (0.15 kg/cm
2, 2.1 psi)
Proof pressure More than 981 kPa (10 kg/cm2, 142 psi)
Oil pan capacity4.0(4.2 US qt, 3.5 Imp qt)
2
2-4[S1A0]SPECIFICATIONS AND SERVICE DATA
1. Specifications

B: 2500 cc MODEL
Lubrication methodForced lubrication
Oil pumpPump type Trochoid type
Number of teethInner rotor 9
Outer rotor 10
Outer rotor diameter´thickness 78´10 mm (3.07´0.39 in)
Tip clearance between inner and outer rotorSTANDARD 0.04 Ð 0.14 mm (0.0016 Ð 0.0055 in)
LIMIT 0.18 mm (0.0071 in)
Side clearance between inner rotor and pump
caseSTANDARD 0.02 Ð 0.07 mm (0.0008 Ð 0.0028 in)
LIMIT 0.15 mm (0.0059 in)
Case clearance between outer rotor and
pump caseSTANDARD 0.10 Ð 0.175 mm (0.0039 Ð 0.0069 in)
LIMIT 0.20 mm (0.0079 in)
Capacity at
80ÉC (176ÉF)600 rpm Discharge- pressure 98 kPa (1.0 kg/cm
2, 14 psi) or more
- quantity 4.6(4.9 US qt, 4.0 Imp qt)/min.
5,000 rpm Discharge- pressure 294 kPa (3.0 kg/cm
2, 43 psi) or more
- quantity 47.0(12.4 US gal, 10.3 Imp gal)/min.
Relief valve operation pressure 588 kPa (6.0 kg/cm
2, 85 psi)
Oil filterTypeFull-flow filter type
Filtration area 1,000 cm
2(155 sq in)
By-pass valve opening pressure 157 kPa (1.6 kg/cm2, 23 psi)
Outer diameter´width 80´70 mm (3.15´2.76 in)
Oil filter to engine thread size M 20´1.5
Oil pressure
switchType Immersed contact point type
Working voltage Ð wattage 12 V Ð 3.4 W or less
Warning light activation pressure 14.7 kPa (0.15 kg/cm
2, 2.1 psi)
Proof pressure More than 981 kPa (10 kg/cm2, 142 psi)
Oil pan capacity4.5(4.8 US qt, 4.0 Imp qt)
3
[S1B0]2-4SPECIFICATIONS AND SERVICE DATA
1. Specifications

Pinion height adjusting shimPart No. Thickness
383495200 3.09 mm (0.1217 in)
383505200 3.12 mm (0.1228 in)
383515200 3.15 mm (0.1240 in)
383525200 3.18 mm (0.1252 in)
383535200 3.21 mm (0.1264 in)
383545200 3.24 mm (0.1276 in)
383555200 3.27 mm (0.1287 in)
383565200 3.30 mm (0.1299 in)
383575200 3.33 mm (0.1311 in)
383585200 3.36 mm (0.1323 in)
383595200 3.39 mm (0.1335 in)
383605200 3.42 mm (0.1346 in)
383615200 3.45 mm (0.1358 in)
383625200 3.48 mm (0.1370 in)
383635200 3.51 mm (0.1382 in)
383645200 3.54 mm (0.1394 in)
383655200 3.57 mm (0.1406 in)
383665200 3.60 mm (0.1417 in)
383675200 3.63 mm (0.1429 in)
383685200 3.66 mm (0.1441 in)
Side gear backlash Ð 0.10 Ð 0.20 mm (0.0039 Ð 0.0079 in)
Side gear thrust washerPart No. Thickness
383445201 0.75 Ð 0.80 mm (0.0295 Ð 0.0315 in)
383445202 0.80 Ð 0.85 mm (0.0315 Ð 0.0335 in)
383445203 0.85 Ð 0.90 mm (0.0335 Ð 0.0354 in)
Side bearing standard width Ð 20.00 mm (0.7874 in)
Side bearing retainer shimPart No. Thickness
383475201 0.20 mm (0.0079 in)
383475202 0.25 mm (0.0098 in)
383475203 0.30 mm (0.0118 in)
383475204 0.40 mm (0.0157 in)
383475205 0.50 mm (0.0197 in)
Crown gear to drive pinion backlash
Limit0.10 Ð 0.20 mm (0.0039 Ð 0.0079 in)
Crown gear runout on its back surface 0.05 mm (0.0020 in)
Oil capacity0.8(0.8 US qt, 0.7 Imp qt)
2. REAR DIFFERENTIAL (VA-TYPE)
Front and rear bearing preload at
companion flange bolt holeNew bearing12.7 Ð 32.4 N
(1.3 Ð 3.3 kg, 2.9 Ð 7.3 lb)
Preload adjusting spacerPart No. Length mm (in)
32288AA040
32288AA050
31454AA100
32288AA060
31454AA110
32288AA070
31454AA120
32288AA080
32288AA09052.3 (2.059)
52.5 (2.067)
52.6 (2.071)
52.7 (2.075)
52.8 (2.079)
52.9 (2.083)
53.0 (2.087)
53.1 (2.091)
53.3 (2.098)
5
[S2C2]3-4SPECIFICATIONS AND SERVICE DATA
2. Rear Differential

3) Pry off clip from outer end of boot, and slide
boot toward tie-rod end.
G4M0789
4) Using ST, remove lock wire from inner end of
boot, and remove boot.
ST 927590000 WRENCH
G4M0790
5) Extend rack approximately 40 mm (1.57 in) out.
Unlock lock wire at lock washer on each side of
tie-rod end using a standard screwdriver.
CAUTION:
Be careful not to scratch rack surface as oil
leaks may result.
G4M0791
6) Using ST, loosen lock nut.
ST 926230000 SPANNER
G4M0792
7) Tighten adjusting screw until it no longer tight-
ens.
G4M0793
8) Using a wrench [32 mm (1.26 in) width across
flats] or adjustable wrench, remove tie-rod.
CAUTION:
ICheck ball joint for free play, and tie-rod for
bends. Replace if necessary.
ICheck dust seals used with tie-rod end ball
joint for damage or deterioration. Replace if
necessary.
G4M0794
9) Loosen adjusting screw and remove spring and
sleeve.
CAUTION:
Replace spring and/or sleeve if damaged.
28
4-3[W4B0]SERVICE PROCEDURE
4. Steering Gearbox (Power Steering System) [RHD model]