2004 SUBARU FORESTER Service Repair Manual

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Page 865 of 2870

SUBARU FORESTER 2004 Service Repair Manual IN(H4SO)-5
INTAKE (INDUCTION)
Air Cleaner Element
2. Air Cleaner Element
A: REMOVAL
1) Remove the air intake duct from air cleaner
case.
2) Remove the bolt (A) which secures air cleaner
case to stay.

Page 866 of 2870

SUBARU FORESTER 2004 Service Repair Manual IN(H4SO)-6
INTAKE (INDUCTION)
Air Cleaner Case
3. Air Cleaner Case
A: REMOVAL
1) Disconnect the ground cable from battery.
2) Disconnect the connector (A) of intake air tem-
perature sensor.
3) Remov

Page 867 of 2870

SUBARU FORESTER 2004 Service Repair Manual IN(H4SO)-7
INTAKE (INDUCTION)
Air Intake Duct
4. Air Intake Duct
A: REMOVAL
1) Remove the bolt (A) which installs air intake duct
A on the front side of body.
2) Remove the clip (B) which connects air

Page 868 of 2870

SUBARU FORESTER 2004 Service Repair Manual IN(H4SO)-8
INTAKE (INDUCTION)
Resonator Chamber
5. Resonator Chamber
A: REMOVAL
1) Remove the air intake duct. <Ref. to IN(H4SO)-
7, REMOVAL, Air Intake Duct.>
2) Remove the resonator chamber.
B: INST

Page 869 of 2870

SUBARU FORESTER 2004 Service Repair Manual FUJI HEAVY INDUSTRIES LTD. G8080GE2
2004 FORESTER SERVICE MANUAL QUICK REFERENCE INDEX
ENGINE SECTION 1
This service manual has been prepared
to provide SUBARU service personnel
with the necessary inf

Page 870 of 2870

SUBARU FORESTER 2004 Service Repair Manual MECHANICAL
ME(H4SO)
Page
1. General Description ....................................................................................2
2. Compression ...................................................

MECHANICAL
ME(H4SO)
Page
1. General Description ....................................................................................2
2. Compression .............................................................................................25
3. Idle Speed .................................................................................................26
4. Ignition Timing ...........................................................................................27
5. Intake Manifold Vacuum............................................................................28
6. Engine Oil Pressure ..................................................................................29
7. Fuel Pressure ............................................................................................30
8. Valve Clearance ........................................................................................31
9. Engine Assembly ......................................................................................34
10. Engine Mounting .......................................................................................41
11. Preparation for Overhaul ...........................................................................42
12. V-belt .........................................................................................................43
13. Crank Pulley ..............................................................................................45
14. Timing Belt Cover......................................................................................47
15. Timing Belt ................................................................................................48
16. Cam Sprocket ...........................................................................................53
17. Crank Sprocket .........................................................................................55
18. Valve Rocker Assembly ............................................................................56
19. Camshaft ...................................................................................................58
20. Cylinder Head ...........................................................................................62
21. Cylinder Block ...........................................................................................69
22. Engine Trouble in General ........................................................................91
23. Engine Noise .............................................................................................96

Page 871 of 2870

SUBARU FORESTER 2004 Service Repair Manual ME(H4SO)-2
MECHANICAL
General Description
1. General Description
A: SPECIFICATION
NOTE:
STD: Standard I.D.: Inner Diameter O.D.: Outer Diameter US: Undersize OS: Oversize
EngineModel 2.0 L 2.5 L
Ty p

ME(H4SO)-2
MECHANICAL
General Description
1. General Description
A: SPECIFICATION
NOTE:
STD: Standard I.D.: Inner Diameter O.D.: Outer Diameter US: Undersize OS: Oversize
EngineModel 2.0 L 2.5 L
Ty p eHorizontally opposed, liquid cooled, 4-cylinder, 4-stroke gaso-
line engine
Valve arrangement Belt driven, single over-head camshaft, 4-valve/cylinder
Bore×Stroke mm (in) 92×75 (3.62×2.95)99.5×79.0
(3.917×3.110)
Displacement
cm
3 (cu in)1,994 (121.67) 2,457 (150)
Compression ratio 10.0
Compression pressure
(at 200 — 300 rpm)kPa (kg/cm
2, psi)1,079 — 1,275 (11.0 — 13.0, 156 — 185)
Number of piston rings Pressure ring: 2, Oil ring: 1
Intake valve timingOpen 4° BTDC 1° BTDC
Close 48° ABDC 51° ABDC
Exhaust valve timingOpen 48° BBDC 50° BBDC
Close 4° AT D C 6° AT D C
Valve clearance Intake mm (in) 0.20±0.04 (0.0079±0.0016)
Exhaust mm (in) 0.25±0.04 (0.0098±0.0016)
Idling speed [at neutral position on
MT, or “P” or “N” range on AT]rpm650±100 (No load)
850±100 (A/C switch ON)
Firing order 1 → 3 → 2 → 4
Ignition timing BTDC/rpm 10°±10°/650
Belt
tensioner
adjusterProtrusion of adjuster rod mm (in) 5.7 — 6.7 (0.224 — 0.263)
Belt
tensionerSpacer O.D. mm (in) 17.955 — 17.975 (0.7069 — 0.7077)
Tensioner bush I.D. mm (in) 18.00 — 18.08 (0.7087 — 0.7118)
Clearance between spacer and bush mm (in)STD 0.025 — 0.125 (0.0010 — 0.0049)
Limit 0.175 (0.0069)
Side clearance of spacer mm (in)STD 0.20 — 0.55 (0.0079 — 0.0217)
Limit 0.81 (0.0319)
Valve rocker
armClearance between shaft and arm mm (in)STD 0.020 — 0.054 (0.0008 — 0.0021)
Limit 0.10 (0.0039)
CamshaftBend limit mm (in) 0.025 (0.0010)
Thrust clearance mm (in)STD 0.030 — 0.090 (0.0012 — 0.0035)
Limit 0.10 (0.0039)
Cam lobe height mm (in)2.0 LIntakeSTD 38.732 — 38.832 (1.5249 — 1.5288)
Limit 38.632 (1.5209)
ExhaustSTD 39.259 — 39.359 (1.5456 — 1.5496)
Limit 39.157 (1.5417)
2.5 LIntakeSTD 39.485 — 39.585 (1.5545 — 1.5585)
Limit 39.385 (1.5506)
ExhaustSTD 39.259 — 39.359 (1.5456 — 1.5496)
Limit 39.159 (1.5417)
Camshaft journal O.D. mm (in) 31.928 — 31.945 (1.2570 — 1.2577)
Camshaft journal hole I.D. (Cylinder head) mm (in) 32.000 — 32.018 (1.2598 — 1.2605)
Oil clearance mm (in)STD 0.055 — 0.090 (0.0022 — 0.0035)
Limit 0.10 (0.0039)

Page 872 of 2870

SUBARU FORESTER 2004 Service Repair Manual ME(H4SO)-3
MECHANICAL
General Description
Cylinder
headSurface warpage limit (mating with cylinder block) mm (in) 0.05 (0.0020)
Grinding limit mm (in) 0.1 (0.004)
Standard height mm (in) 97.5 (3.84)

ME(H4SO)-3
MECHANICAL
General Description
Cylinder
headSurface warpage limit (mating with cylinder block) mm (in) 0.05 (0.0020)
Grinding limit mm (in) 0.1 (0.004)
Standard height mm (in) 97.5 (3.84)
Va l ve s e a tRefacing angle90°
Contacting width mm (in)IntakeSTD 1.1 (0.043)
Limit 1.8 (0.070)
ExhaustSTD 1.5 (0.059)
Limit 2.2 (0.087)
Valve guideInner diameter mm (in) 6.000 — 6.012 (0.2362 — 0.2367)
Protrusion above head mm (in)Intake 20.0 — 20.5 (0.787 — 0.807)
Exhaust 16.5 — 17.0 (0.650 — 0.669)
Va l veHead edge thickness mm (in)IntakeSTD 1.0 (0.039)
Limit 0.6 (0.024)
ExhaustSTD 1.2 (0.047)
Limit 0.6 (0.024)
Stem outer diameter mm (in)Intake 5.950 — 5.965 (0.2343 — 0.2348)
Exhaust 5.945 — 5.960(0.2341 — 0.2346)
Stem oil clearance mm (in)STDIntake 0.035 — 0.062 (0.0014 — 0.0024)
Exhaust 0.040 — 0.067 (0.0016 — 0.0026)
Limit — 0.15 (0.0059)
Overall length mm (in)Intake 120.6 (4.75)
Exhaust 121.7 (4.79)
Valve springFree length mm (in) 54.30 (2.1378)
Squareness mm (in) 2.5°, 2.4 (0.094)
Tension/spring height N (kgf, lb)/mm (in)Set214 — 246 (22 — 25, 48 — 55)/
45.0 (1.772)
Lift526 — 582 (54 — 59, 119 — 130)/
34.7 (1.366)
Cylinder
blockSurface warpage limit (mating with cylinder head) mm (in) 0.05 (0.0020)
Grinding limit mm (in) 0.1 (0.004)
Cylinder inner
diametermm (in)2.0 L STDA 92.005 — 92.015 (3.6222 — 3.6226)
B 91.995 — 92.005 (3.6218 — 3.6222)
2.5 L STDA 99.505 — 99.515 (3.9175 — 3.9179)
B 99.495 — 99.505 (3.9171 — 3.9175)
Ta p e r m m ( i n )STD 0.015 (0.0006)
Limit 0.050 (0.0020)
Out-of-roundness mm (in)STD 0.010 (0.0004)
Limit 0.050 (0.0020)
Piston clearance mm (in)STD 0.010 — 0.030 (0.0004 — 0.0012)
Limit 0.050 (0.0020)
Boring mm (in) 0.5 (0.020)
PistonOuter diameter mm (in)2.0 LSTDA 91.985 — 91.995 (3.6214 — 3.6218)
B 91.975 — 91.985 (3.6211 — 3.6214)
0.25 (0.0098) OS 92.225 — 92.235 (3.6309 — 3.6313)
0.50 (0.0197) OS 92.475 — 92.485 (3.6407 — 3.6411)
2.5 LSTDA 99.485 — 99.495 (3.9167 — 3.9171)
B 99.475 — 99.485 (3.9163 — 3.9167)
0.25 (0.0098) OS 99.725 — 99.735 (3.9262 — 3.9266)
0.50 (0.0197) OS 99.975 — 99.985 (3.9360 — 3.9364)
Piston pin standard diameter mm (in) 23.000 — 23.006 (0.9055 — 0.9057)

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