Subaru Legacy (2005 year). Service manual — part 55
ME(H4SO 2.0)-3
MECHANICAL
General Description
Valve seat
Refacing angle
90
°
Contacting width
mm (in)
Intake
Standard
0.8 — 1.4 (0.03 — 0.055)
Exhaust
Standard
1.2 — 1.8 (0.047 — 0.071)
Valve guide
Inside diameter
mm (in)
6.000 — 6.012 (0.2362 — 0.2367)
Protrusion above head
mm (in)
Intake
20.0 — 21.0 (0.787 — 0.827)
Exhaust
16.5 — 17.5 (0.650 — 0.689)
Valve
Head edge thick-
ness
mm (in)
Intake
Standard
0.8 — 1.2 (0.03 — 0.047)
Exhaust
Standard
1.0 — 1.4 (0.039 — 0.055)
Stem outer diameter
mm (in)
Intake
5.950 — 5.965 (0.2343 — 0.2348)
Exhaust
5.945 — 5.960 (0.2341 — 0.2346)
Valve stem gap
mm (in) Standard
Intake
0.035 — 0.062 (0.0014 — 0.0024)
Exhaust
0.040 — 0.067 (0.0016 — 0.0026)
Overall length
mm (in)
Intake
120.6 (4.75)
Exhaust
121.7 (4.79)
Valve spring
Free length
mm (in)
54.30 (2.1378)
Squareness
2.5
°, 2.4 mm (0.094 in)
Tension/spring height
N (kgf, lbf)/mm (in)
Set
214 — 246 (22 — 25, 48 — 55)/45.0 (1.772)
Lift
526 — 582 (54 — 59, 119 — 130)/34.7
(1.366)
Cylinder
block
Surface warpage limit (mating with cylinder head)
mm (in)
0.025 (0.00098)
Grinding limit
mm (in)
0.1 (0.004)
Standard height
mm (in)
201.0 (7.91)
Cylinder inner
diameter
mm (in)
2.0 L
Standard
A
92.005 — 92.015 (3.6222 — 3.6226)
B
91.995 — 92.005 (3.6218 — 3.6222)
2.5 L
Standard
A
99.505 — 99.515 (3.9175 — 3.9179)
B
99.495 — 99.505 (3.9171 — 3.9175)
Cylindricality
mm (in) Standard
0.015 (0.0006)
Out-of-roundness
mm (in) Standard
0.010 (0.0004)
Piston clearance
mm (in) Standard
−0.010 — 0.010 (−0.00039 — 0.00039)
Piston
Outer diameter
mm (in)
2.0 L
Standard
A
92.005 — 92.015 (3.6222 — 3.6226)
B
91.995 — 92.005 (3.6219 — 3.6222)
0.25 (0.0098) OS
92.245 — 92.265 (3.6317 — 3.6325)
0.50 (0.0197) OS
92.495 — 92.515 (3.6415 — 3.6423)
2.5 L
Standard
A
99.505 — 99.515 (3.9175 — 3.9179)
B
99.495 — 99.505 (3.9171 — 3.9175)
0.25 (0.0098) OS
99.745 — 99.765 (3.9270 — 3.9278)
0.50 (0.0197) OS
99.995 — 100.015 (3.9368 — 3.9376)
Piston pin specified diameter
mm (in)
23.000 — 23.006 (0.9055 — 0.9057)
Piston pin
Outer diameter
mm (in)
22.994 — 23.000 (0.9053 — 0.9055)
Standard clearance between piston and piston pin
mm (in)
0.004 — 0.008 (0.0002 — 0.0003)
Degree of fit
Piston pin must be fitted into position with
thumb at 20
°C (68°F).
Piston ring
Ring closed gap
mm (in)
Top ring
Standard
0.20 — 0.35 (0.0079 — 0.0138)
Second
ring
2.0 L
Standard
0.40 — 0.50 (0.0157 — 0.0197)
2.5 L
Standard
0.37 — 0.52 (0.0146 — 0.0205)
Oil ring
Standard
0.20 — 0.50 (0.0079 — 0.0197)
Ring groove gap
mm (in)
Top ring
Standard
0.040 — 0.080 (0.0016 — 0.0031)
Second ring
Standard
0.030 — 0.070 (0.0012 — 0.0028)
Connecting
rod
Bend or twist per 100 mm (3.94 in) in
length
mm (in) Limit
0.10 (0.0039)
Thrust clearance
mm (in) Standard
0.070 — 0.330 (0.0028 — 0.0130)
ME(H4SO 2.0)-4
MECHANICAL
General Description
Bearing of
large end
Oil clearance
mm (in) Standard
0.016 — 0.044 (0.00063 — 0.0017)
Bearing size
(Thickness at cen-
ter)
mm (in)
Standard
1.492 — 1.501 (0.0587 — 0.0591)
0.03 (0.0012) US
1.510 — 1.513 (0.0594 — 0.0596)
0.05 (0.0020) US
1.520 — 1.523 (0.0598 — 0.0600)
0.25 (0.0098) US
1.620 — 1.623 (0.0638 — 0.0639)
Bushing of
small end
Clearance between piston pin and
bushing
mm (in) Standard
0 — 0.022 (0 — 0.0009)
Crankshaft
Bend limit
mm (in)
0.035 (0.0014)
Crank pin
Out-of-round-
ness
2.0 L
0.005 (0.0002)
mm (in) 2.5 L
0.003 (0.0001)
Cylindricality
2.0 L
0.006 (0.0002)
mm (in) 2.5 L
0.004 (0.0002)
Grinding limit (dia.)
mm (in)
To 51.750 (2.0374)
Crank journal
Out-of-roundness
mm (in)
0.005 (0.0002)
Cylindricality
mm (in)
0.006 (0.0002)
Grinding limit (dia.)
mm (in)
To 59.750 (2.3524)
Crank pin outer
diameter
mm (in)
Standard
51.984 — 52.000 (2.0466 — 2.0472)
0.03 (0.0012) US
51.954 — 51.970 (2.0454 — 2.0461)
0.05 (0.0020) US
51.934 — 51.950 (2.0446 — 2.0453)
0.25 (0.0098) US
51.734 — 51.750 (2.0368 — 2.0374)
Crank journal outer
diameter
mm (in)
Standard
59.992 — 60.008 (2.3619 — 2.3625)
0.03 (0.0012) US
59.962 — 59.978 (2.3607 — 2.3613)
0.05 (0.0020) US
59.942 — 59.958 (2.3599 — 2.3605)
0.25 (0.0098) US
59.742 — 59.758 (2.3520 — 2.3527)
Thrust clearance
mm (in) Standard
0.030 — 0.115 (0.0012 — 0.0045)
Oil clearance
mm (in) Standard
0.010 — 0.030 (0.0004 — 0.0012)
Main bear-
ing
Main bearing
#1, #3
Standard
1.998 — 2.011 (0.0787 — 0.0792)
0.03 (0.0012) US
2.017 — 2.020 (0.0794 — 0.0795)
0.05 (0.0020) US
2.027 — 2.030 (0.0798 — 0.0799)
0.25 (0.0098) US
2.127 — 2.130 (0.0837 — 0.0839)
mm (in)
#2, #4, #5
Standard
2.000 — 2.013 (0.0787 — 0.0793)
0.03 (0.0012) US
2.019 — 2.022 (0.0795 — 0.0796)
0.05 (0.0020) US
2.029 — 2.032 (0.0799 — 0.0800)
0.25 (0.0098) US
2.129 — 2.132 (0.0838 — 0.0839)
ME(H4SO 2.0)-5
MECHANICAL
General Description
B: COMPONENT
1. TIMING BELT
(1)
Timing belt cover No. 2 (RH)
(10)
Belt idler No. 2
Tightening torque: N
⋅
m (kgf-m, ft-lb)
(2)
Timing belt guide (MT model)
(11)
Cam sprocket No. 2
T1: 5 (0.5, 3.7)
(3)
Crank sprocket
(12)
Timing belt
T2: 10 (1.0, 7.4)
(4)
Timing belt cover No. 2 (LH)
(13)
Front timing belt cover
T3: 24.5 (2.5, 18.1)
(5)
Cam sprocket No. 1
(14)
Timing belt cover (LH)
T4: 39 (4.0, 28.9)
(6)
Belt idler (No. 1)
(15)
Crank pulley (2.0 L model)
T5: 78 (8.0, 57.9)
(7)
Tensioner bracket
(16)
Crank pulley (2.5 L model)
(8)
Belt idler (No. 2)
(9)
Automatic belt tension adjuster
ASSY
ME-02593
T5
T4
T1
T1
T7
T5
(5)
(6)
(8)
(9)
(11)
(10)
(14)
(15)
(16)
(12)
(13)
(7)
(4)
(1)
(2)
T1
T2
T1
T3
T4
T6
T4
(3)
ME(H4SO 2.0)-6
MECHANICAL
General Description
2. CYLINDER HEAD AND CAMSHAFT
(1)
Rocker cover (RH)
(12)
Camshaft (LH)
Tightening torque: N
⋅
m (kgf-m, ft-lb)
(2)
Intake valve rocker ASSY
(13)
Camshaft cap (LH)
(3)
Exhaust valve rocker ASSY
(14)
Oil filler cap
(4)
Camshaft cap (RH)
(15)
Gasket
(5)
Oil seal
(16)
Oil filler duct
T2: 5 (0.5, 3.7)
(6)
Camshaft (RH)
(17)
O-ring
T3: 9.75 (1.0, 7.2)
(7)
Plug
(18)
Rocker cover (LH)
T4: 18 (1.8, 13.3)
(8)
Spark plug pipe gasket
(19)
Stud bolt
T5: 25 (2.5, 18.4)
(9)
Cylinder head (RH)
(20)
Rocker cover gasket (RH)
T6: 6.4 (0.65, 4.7)
(10)
Cylinder head gasket
(21)
Rocker cover gasket (LH)
(11)
Cylinder head (LH)
ME-02594
(17)
(21)
(10)
(11)
(19)
(12)
(13)
(14)
(15)
(16)
(18)
(2)
(3)
(8)
(5)
(1)
(2)
(3)
(4)
(8)
(6)
(7)
(8)
(7)
(9)
(10)
(19)
T2
T5
(5)
(20)
T4
T5
T6
T1
T1
T3
T2
T3
T3
T4
T3
T4
T5
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