1997 SUBARU LEGACY Service Repair Manual

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Page 265 of 3342

SUBARU LEGACY 1997 Service Repair Manual Valve springFree length 44.05 mm (1.7342 in)
Squareness 2.5°, 1.9 mm (0.075 in)
Tension/spring height174.6—200.1 N
(17.8—20.4 kg, 39.2—45.0 lb)/36.0 mm (1.417 in)
405.0—458.0 N
(41.3—46.7 k

Valve springFree length 44.05 mm (1.7342 in)
Squareness 2.5°, 1.9 mm (0.075 in)
Tension/spring height174.6—200.1 N
(17.8—20.4 kg, 39.2—45.0 lb)/36.0 mm (1.417 in)
405.0—458.0 N
(41.3—46.7 kg, 91.1—103.0 lb)/28.2 mm (1.110 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—96.915 mm (3.8151—3.8155 in)
B 96.895—96.905 mm (3.8148—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—0.030 mm (0.0004—0.0012 in)
Limit 0.050 mm (0.0020 in)
Enlarging (boring) limit 0.5 mm (0.020 in)
Piston Outer diameterSTDA 96.885—96.895 mm (3.8144—3.8148 in)
B 96.875—96.885 mm (3.8140—3.8144 in)
0.25 mm (0.0098 in)
OS97.115—97.145 mm (3.8234—3.8246 in)
0.50 mm (0.0197 in)
OS97.365—97.395 mm (3.8333—3.8344 in)
Piston pinStandard clearance between piston
pin and hole in pistonSTD 0.004—0.010 mm (0.0002—0.0004 in)
Limit 0.020 mm (0.0008 in)
Degree of fitPiston pin must be fitted into position with thumb at 20°C
(68°F).
Piston ringPiston ring gapTop ringSTD 0.20—0.35 mm (0.0079—0.0138 in)
Limit 1.0 mm (0.039 in)
Second
ringSTD 0.20—0.50 mm (0.0079—0.0197 in)
Limit 1.0 mm (0.039 in)
Oil ringSTD 0.20—0.70 mm (0.0079—0.0276 in)
Limit 1.5 mm (0.059 in)
Clearance between piston
ring and piston ring grooveTop ringSTD 0.040—0.080mm (0.0016—0.0031 in)
Limit 0.15 mm (0.0059 in)
Second
ringSTD 0.030—0.070 mm (0.0012—0.0028 in)
Limit 0.15 mm (0.0059 in)
Connecting
rodBend twist per 100 mm (3.94 in) in
lengthLimit 0.10 mm (0.0039 in)
Side clearanceSTD 0.070—0.330 mm (0.0028—0.0130 in)
Limit 0.4 mm (0.016 in)
Connecting
rod bearingOil clearanceSTD 0.015—0.045 mm (0.0006—0.0018 in)
Limit 0.05 mm (0.0020 in)
Thickness at center portionSTD 1.492—1.501 mm (0.0587—0.0591 in)
0.03 mm
(0.0012 in)
US1.510—1.513 mm (0.0594—0.0596 in)
0.05 mm
(0.0020 in)
US1.520—1.523 mm (0.0598—0.0600 in)
0.25 mm
(0.0098 in)
US1.620—1.623 mm (0.0638—0.0639 in)
Connecting
rod bushingClearance between piston pin and
bushingSTD 0—0.022 mm (0—0.0009 in)
Limit 0.030 mm (0.0012 in)
STD: Standard OS: Oversize US: Undersize
4
2-3SPECIFICATIONS AND SERVICE DATA
1. Engine

Page 266 of 3342

SUBARU LEGACY 1997 Service Repair Manual CrankshaftBend limit 0.035 mm (0.0014 in)
Crank pin and crank journalOut-of-roundness 0.030 mm (0.0012 in) or less
Grinding limit 0.25 mm (0.0098 in)
Crank pin outer diameterSTD 51.984—52.000 mm (2.

Page 267 of 3342

SUBARU LEGACY 1997 Service Repair Manual 1. Timing Belt
B2M0102A
1Crankshaft sprocket

2Belt cover No. 2 (RH)

3Belt cover No. 2 (LH)

4Camshaft sprocket (RH)

5Belt idler

6Tensioner bracket

7Belt idler

8Belt tensioner

9Tensione

Page 268 of 3342

SUBARU LEGACY 1997 Service Repair Manual 2. Cylinder Head and Camshaft
B2M0103A
1Rocker cover (RH)

2Rocker cover gasket

3Camshaft support (RH)

4O-ring

5Camshaft (RH)

6Intake valve guide

7Exhaust valve guide

8Oil seal

9Cylind

Page 269 of 3342

SUBARU LEGACY 1997 Service Repair Manual 3. Cylinder Head and Valve Assembly
B2M1001A
1Exhaust valve

2Intake valve

3Intake valve oil seal

4Valve spring

5Retainer

6Retainer key

7Exhaust valve oil seal

8Rocker shaft support

9R

Page 270 of 3342

SUBARU LEGACY 1997 Service Repair Manual 4. Cylinder Block
B2M0381A
1Oil pressure switch

2Cylinder block (RH)

3Service hole plug

4Gasket

5Oil separator cover

6Water pipe

7Oil pump

8Front oil seal

9Rear oil seal

10O-ring

Page 271 of 3342

SUBARU LEGACY 1997 Service Repair Manual 5. Crankshaft and Piston
G2M0105
1Drive plate (AT)

2Reinforcement (AT)

3Flywheel (MT)

4Bell bearing (MT)

5Top ring

6Second ring

7Oil ring

8Piston

9Piston pin

10Circlip

11Connectin

Page 272 of 3342

SUBARU LEGACY 1997 Service Repair Manual G2M0106
1. General Precautions
1) Before disassembling engine, place it on ST3.
ST1 498457000 ENGINE STAND ADAPTER RH
ST2 498457100 ENGINE STAND ADAPTER LH
ST3 499817000 ENGINE STAND
2) All parts shou

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