2004 SUBARU FORESTER Service Repair Manual

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Page 1457 of 2870

SUBARU FORESTER 2004 Service Repair Manual MECHANICAL
ME(H4DOTC)
Page
1. General Description ....................................................................................2
2. Compression .................................................

MECHANICAL
ME(H4DOTC)
Page
1. General Description ....................................................................................2
2. Compression .............................................................................................31
3. Idle Speed .................................................................................................32
4. Ignition Timing ...........................................................................................33
5. Intake Manifold Vacuum............................................................................34
6. Engine Oil Pressure ..................................................................................35
7. Fuel Pressure ............................................................................................36
8. Valve Clearance ........................................................................................37
9. Engine Assembly ......................................................................................41
10. Engine Mounting .......................................................................................50
11. Preparation for Overhaul ...........................................................................51
12. V-belt .........................................................................................................52
13. Crank Pulley ..............................................................................................55
14. Timing Belt Cover......................................................................................57
15. Timing Belt Assembly................................................................................58
16. Cam Sprocket ...........................................................................................67
17. Crank Sprocket .........................................................................................68
18. Camshaft ...................................................................................................69
19. Cylinder Head Assembly ...........................................................................76
20. Cylinder Block ...........................................................................................84
21. Intake and Exhaust Valve .......................................................................115
22. Piston ......................................................................................................116
23. Connecting Rod ......................................................................................117
24. Crankshaft ...............................................................................................118
25. Engine Trouble in General ......................................................................119
26. Engine Noise ...........................................................................................124

Page 1458 of 2870

SUBARU FORESTER 2004 Service Repair Manual ME(H4DOTC)-2
MECHANICAL
General Description
1. General Description
A: SPECIFICATION
1. 2.0 L MODEL
NOTE:
STD: Standard I.D.: Inner Diameter O.D.: Outer Diameter OS: Oversize US: Undersize
EngineTy p e

Page 1459 of 2870

SUBARU FORESTER 2004 Service Repair Manual ME(H4DOTC)-3
MECHANICAL
General Description
CamshaftBend limit 0.020 mm (0.0079 in)
Thrust clearanceSTD 0.068 — 0.116 mm (0.0027 — 0.0046 in)
Limit 0.14 mm (0.0055 in)
Cam lobe heightIntakeSTD 44.

ME(H4DOTC)-3
MECHANICAL
General Description
CamshaftBend limit 0.020 mm (0.0079 in)
Thrust clearanceSTD 0.068 — 0.116 mm (0.0027 — 0.0046 in)
Limit 0.14 mm (0.0055 in)
Cam lobe heightIntakeSTD 44.75 — 44.85 mm (1.762 — 1.766 in)
Limit 44.65 mm (1.758 in)
ExhaustSTD 44.75 — 44.85 mm (1.762 — 1.766 in)
Limit 44.65 mm (1.758 in)
Journal O.D.
STDFront 37.946 — 37.963 mm (1.4939 — 1.4946 in)
Center
rear29.946 — 29.963 mm (1.1790 — 1.1796 in)
Oil clearanceSTD 0.037 — 0.072 mm (0.0015 — 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)
Va l ve s e a tRefacing angle 90°
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 — 6.012 mm (0.2362 — 0.2367 in)
Protrusion above head 15.8 — 16.2 mm (0.622 — 0.638 in)
Va l veHead 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 5.955 — 5.970 mm (0.2344 — 0.2350 in)
Exhaust 5.945 — 5.960 mm (0.2341 — 0.2346 in)
Stem oil clearanceSTDIntake 0.030 — 0.057 mm (0.0012 — 0.0022 in)
Exhaust 0.040 — 0.067 mm (0.0016 — 0.0026 in)
Limit — 0.15 mm (0.0059 in)
Overall lengthIntake 104.4 mm (4.110 in)
Exhaust 104.65 mm (4.120 in)
Va l ve
springFree length 44.67 mm (1.759 in)
Squareness 2.5°, 2.0 mm (0.079 in)
Tension/spring heightSet206 — 236 N (21.0 — 24.1 kgf, 46.3 — 53.1 lb)/
36.0 mm (1.417 in)
Lift485 — 537 N (49.5 — 54.8 kgf, 109 — 121 lb)/
26.6 mm (1.047 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 92.005 — 92.015 mm (3.6222 — 3.6226 in)
B 91.995 — 92.005 mm (3.6218 — 3.6222 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)

Page 1460 of 2870

SUBARU FORESTER 2004 Service Repair Manual ME(H4DOTC)-4
MECHANICAL
General Description
Piston Outer diameterSTDA 91.985 — 91.995 mm (3.6214 — 3.6218 in)
B 91.975 — 91.985 mm (3.6211 — 3.6214 in)
0.25 mm (0.0098 in)
OS92.225 — 92.235

Page 1461 of 2870

SUBARU FORESTER 2004 Service Repair Manual ME(H4DOTC)-5
MECHANICAL
General Description
CrankshaftBend limit 0.035 mm (0.0014 in)
Crank pin and crank jour-
nalOut-of-roundness 0.005 mm (0.0002 in) or less
Grinding limit 0.25 mm (0.0098 in)
Cran

Page 1462 of 2870

SUBARU FORESTER 2004 Service Repair Manual ME(H4DOTC)-6
MECHANICAL
General Description
2. 2.5 L MODEL
NOTE:
STD: Standard I.D.: Inner Diameter O.D.: Outer Diameter OS: Oversize US: Undersize
EngineModel2.5 L
Ty p eHorizontally opposed, liquid

Page 1463 of 2870

SUBARU FORESTER 2004 Service Repair Manual ME(H4DOTC)-7
MECHANICAL
General Description
Belt ten-
sion
adjusterProtrusion of adjuster rod 5.7 — 6.7 mm (0.224 — 0.264 in)
Belt ten-
sionerSpacer O.D. 17.955 — 17.975 mm (0.7069 — 0.7077 i

ME(H4DOTC)-7
MECHANICAL
General Description
Belt ten-
sion
adjusterProtrusion of adjuster rod 5.7 — 6.7 mm (0.224 — 0.264 in)
Belt ten-
sionerSpacer O.D. 17.955 — 17.975 mm (0.7069 — 0.7077 in)
Tensioner bush I.D. 18.0 — 18.08 mm (0.7087 — 0.7118 in)
Clearance between spacer and bushSTD 0.025 — 0.125 mm (0.0010 — 0.0049 in)
Limit 0.175 mm (0.069 in)
Side clearance of spacerSTD 0.2 — 0.55 mm (0.0079 — 0.0217 in)
Limit 0.81 mm (0.0319 in)
CamshaftBend limit 0.020 mm (0.0079 in)
Thrust clearanceSTD 0.068 — 0.116 mm (0.0027 — 0.0046 in)
Limit 0.14 mm (0.0055 in)
Cam lobe heightIntakeSTD 46.55 — 46.65 mm (1.833 — 1.837 in)
Limit 46.45 mm (1.829 in)
ExhaustSTD 46.75 — 46.85 mm (1.841 — 1.844 in)
Limit 46.65 mm (1.837 in)
Journal O.D. STDFront 37.946 — 37.963 mm (1.4939 — 1.4946 in)
Center
rear29.946 — 29.963 mm (1.1790 — 1.1796 in)
Oil clearanceSTD 0.037 — 0.072 mm (0.0015 — 0.0028 in)
Limit 0.10 mm (0.0039 in)
Cylinder
headSurface warpage limit (mating with cylinder head) 0.05 mm (0.0020 in)
Surface grinding limit 0.3 mm (0.012 in)
Standard height 127.5 mm (5.02 in)
Va l ve s e a tRefacing angle 90°
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 — 6.012 mm (0.2362 — 0.2367 in)
Protrusion above head 15.8 — 16.2 mm (0.622 — 0.638 in)
Va l veHead 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 5.955 — 5.970 mm (0.2344 — 0.2350 in)
Exhaust 5.945 — 5.960 mm (0.2341 — 0.2346 in)
Stem oil clearanceSTDIntake 0.030 — 0.057 mm (0.0012 — 0.0022 in)
Exhaust 0.040 — 0.067 mm (0.0016 — 0.0026 in)
Limit — 0.15 mm (0.0059 in)
Overall lengthIntake 104.4 mm (4.110 in)
Exhaust 104.65 mm (4.120 in)
Va l ve
springFree length 47.32 mm (1.863 in)
Squareness 2.5°, 2.1 mm (0.083 in)
Tension/spring heightSet205 — 235 N (20.9 — 24.0 kgf, 46.1 — 52.8 lb)/
36.0 mm (1.417 in)
Lift426 — 490 N (43.4 — 50.0 kgf, 95.8 — 110 lb)/
26.50 mm (1.043 in)

Page 1464 of 2870

SUBARU FORESTER 2004 Service Repair Manual ME(H4DOTC)-8
MECHANICAL
General Description
Cylinder
blockSurface warpage limit (mating with cylinder head) 0.05 mm (0.0020 in)
Surface grinding limit 0.1 mm (0.004 in)
Standard height 201.0 mm (7.91

ME(H4DOTC)-8
MECHANICAL
General Description
Cylinder
blockSurface warpage limit (mating with cylinder head) 0.05 mm (0.0020 in)
Surface grinding limit 0.1 mm (0.004 in)
Standard height 201.0 mm (7.91 in)
Cylinder bore STDA 99.505 — 99.515 mm (3.9175 — 3.9179 in)
B 99.495 — 99.505 mm (3.9171 — 3.9175 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 — 0.010 mm (−0.0004 — 0.0004 in)
Limit 0.030 mm (0.0012 in)
Enlarging (boring) limit 0.5 mm (0.020 in)
Piston Outer diameterSTDA 99.505 — 99.515 mm (3.9175 — 3.9179 in)
B 99.495 — 99.505 mm (3.9171 — 3.9175 in)
0.25 mm (0.0098 in)
OS99.745 — 99.765 mm (3.9270 — 3.9278 in)
0.50 mm (0.0197 in)
OS99.995 — 100.015 mm (3.9368 — 3.9376 in)
Piston pinStandard clearance between piston
pin and hole in pistonSTD 0.004 — 0.008 mm (0.0002 — 0.0003 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 — 0.25 mm (0.0079 — 0.0098 in)
Limit 1.0 mm (0.039 in)
Second
ringSTD 0.37 — 0.52 mm (0.015 — 0.020 in)
Limit 1.0 mm (0.039 in)
Oil ringSTD 0.20 — 0.50 mm (0.0079 — 0.020 in)
Limit 1.5 mm (0.059 in)
Clearance between piston
ring and piston ring
grooveTop ringSTD 0.040 — 0.080 mm (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 0.017 — 0.045 mm (0.0007 — 0.0018 in)
Limit 0.05 mm (0.0020 in)
Thickness at center portionSTD 1.490 — 1.502 mm (0.0587 — 0.0591 in)
0.03 mm
(0.0012
in) US1.504 — 1.512 mm (0.0592 — 0.0595 in)
0.05 mm
(0.0020
in) US1.514 — 1.522 mm (0.0596 — 0.0599 in)
0.25 mm
(0.0098
in) US1.614 — 1.622 mm (0.0635 — 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)

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