Subaru Legacy IV (2008 year). Manual — part 52
ME(H4SO)-4
General Description
MECHANICAL
Piston pin
Standard clearance between piston
and piston pin
mm (in) Standard
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
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)
Service
limit
0.10 (0.0039)
Thrust clearance
mm (in) Standard
0.070 — 0.330 (0.0028 — 0.0130)
Bearing of
large end
Oil clearance
mm (in) Standard
0.016 — 0.044 (0.0006 — 0.0017)
Bearing size
(Thickness at center)
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
Bending limit
mm (in)
0.035 (0.0014)
Crank pin
Out-of-roundness
mm (in)
0.003 (0.0001)
Cylindricality
mm (in)
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 59.758 (2.3527)
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 bearing
Bearing size
(Thickness at center)
mm (in)
#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)
#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)-5
General Description
MECHANICAL
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: 9.75 (1.0, 7.2)
(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, 28.8)
(6)
Belt idler (A)
(15)
Crank pulley (MT model)
T5: 78 (8.0, 57.5)
(7)
Tensioner bracket
(16)
Crank pulley (AT model)
T6: <Ref. to ME(H4SO)-41, INSTAL-
LATION, Crank Pulley.>
(8)
Belt idler (B)
(9)
Automatic belt tension adjuster
ASSY
ME-03954
T5
T4
T1
T1
T6
T5
(5)
(6)
(8)
(9)
(11)
(10)
(14)
(15)
(12)
(13)
(7)
(4)
(1)
(2)
(3)
T1
T2
T1
T3
T4
T4
T1
T6
(16)
ME(H4SO)-6
General Description
MECHANICAL
2. CYLINDER HEAD AND CAMSHAFT
(1)
Rocker cover RH
(18)
Rocker cover LH
(31)
Seal washer
(2)
Intake valve rocker ASSY
(19)
Stud bolt
(3)
Exhaust valve rocker ASSY
(20)
Rocker cover gasket RH
Tightening torque:N·m (kgf-m, ft-lb)
(4)
Camshaft cap RH
(21)
Rocker cover gasket LH
T1: <Ref. to ME(H4SO)-59, INSTAL-
LATION, Cylinder Head.>
(5)
Oil seal
(22)
Oil switching solenoid valve RH
(6)
Camshaft RH
(23)
Oil switching solenoid valve holder
RH
T2: <Ref. to ME(H4SO)-52, INSTAL-
LATION, Valve Rocker Assem-
bly.>
(7)
Plug
(8)
Spark plug pipe gasket
(24)
Gasket
(9)
Cylinder head RH
(25)
Oil temperature sensor
T3: 9.75 (1.0, 7.2)
(10)
Cylinder head gasket
(26)
Variable valve lift diagnosis oil
pressure switch RH
T4: 18 (1.8, 13.3)
(11)
Cylinder head LH
T5: 25 (2.5, 18.4)
(12)
Camshaft LH
(27)
Oil switching solenoid valve LH
T6: 6.4 (0.7, 4.7)
(13)
Camshaft cap LH
(28)
Oil switching solenoid valve holder
LH
T7: 8 (0.8, 5.9)
(14)
Oil filler cap
T8: 10 (1.0, 7.4)
(15)
Gasket
(29)
Gasket
T9: 6 (0.6, 4.4)
(16)
Oil filler duct
(30)
Variable valve lift diagnosis oil
pressure switch LH
T10: 17 (1.7, 12.5)
(17)
O-ring
T11: 18 (1.8, 13.3)
ME-03453
(17)
(21)
(10)
(11)
(30)
(19)
(28) (27)
(29)
(12)
(13)
(14)
(15)
(16)
(18)
(3)
(31)
(8)
(5)
(1)
(2)
(3)
(4)
(8)
(8)
(6)
(7)
(26)
(24)
(23)
(22)
(7)
(10)
(19)
T2
T5
(5)
(9)
(20)
T4
T8
T7
(2)
T9
T5
T6
T1
T1
T8
T7
T3
T2
T3
T3
T4
T3
T4
T5
(25)
T10
T11
T10
ME(H4SO)-7
General Description
MECHANICAL
3. VALVE ROCKER ASSEMBLY
(1)
Intake valve rocker ASSY
(4)
Exhaust rocker shaft
Tightening torque:N·m (kgf-m, ft-lb)
(2)
Valve rocker nut
(5)
Exhaust valve rocker arm
T1: 6 (0.6, 4.4)
(3)
Valve rocker adjusting screw
T2: 9.75 (1.0, 7.2)
T3: 25 (2.5, 18.4)
(2)
(2)
(3)
(3)
(1)
(5)
(4)
(1)
T2
T3
T2
T1
T2
T3
ME-02691
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