Subaru Impreza 3 / Impreza WRX / Impreza WRX STI. Manual — part 156

ME(w/o STI)-5

General Description

MECHANICAL

B: COMPONENT

1. TIMING BELT

(1)

Timing belt cover No. 2 RH

(12) Timing belt

Tightening torque: N·m (kgf-m, ft-lb)

(2)

Timing belt guide

(13) Belt idler No. 2

T1: 3.4 (0.3, 2.5)

(3)

Crank sprocket

(14) Belt idler

T2: 5 (0.5, 3.7)

(4)

Timing belt cover No. 2 LH

(15) Timing belt cover LH

T3: 6.4 (0.7, 4.7)

(5)

Tensioner bracket

(16) Front belt cover

T4: 9.75 (1.0, 7.2)

(6)

Automatic belt tension adjuster
ASSY

(17) Timing belt cover RH

T5: 24.5 (2.5, 18.1)

(7)

Belt idler

(18) Crank pulley

T6: 25 (2.5, 18.4)

(8)

Exhaust cam sprocket RH

(19) O-ring

T7: 39 (4.0, 28.8)

(9)

Intake cam sprocket RH

(20) Timing belt guide

T8: <Ref. to ME(w/o STI)-57,

INSTALLATION, Cam
Sprocket.>

(10) Intake cam sprocket LH

(21) Actuator cover

T9: <Ref. to ME(w/o STI)-45,

INSTALLATION, Crank Pulley.>

(11) Exhaust cam sprocket LH

(22) Belt idler

ME-04999

(7)

(10)

(11)

(15)

(17)

(9)

(8)

(12)

(16)

(19)

(19)

(21)

(21)

(13)

(14)

T7

T7

T8

T1

T8

T1

T8

T8

T2

T2

T2

T2

T2

(18)

T9

(6)

(5)

(22)

(2)

(3)

(4)

(1)

(20)

(20)

(20)

T3

T4

T7

T3

T3

T2

T2

T6

T2

T5

T2

ME(w/o STI)-6

General Description

MECHANICAL

2. CYLINDER HEAD AND CAMSHAFT

ME-04964

T5

T5

T5

T5

T5

T5

T4

(3)

(7)

(6)

(9)

(8)

(10)

(12)

(13)

(25)

(21)

(20)

(6)

(16)

(17)

(18)

(9)

(8)

(19)

(15)

(14)

(29)

(11)

(5)

(4)

(22)

T5

T5

(14)

(29)

(12)

(27)

(26)

(27)

(31)

(30)

T1

T4

(11)

T3

T2

T1

T3

(24)

(23)

T1

(32)

T5

(1)

(2)

T5

(28)

T2

(31)

(27)

T1

T3

(30)

T3

ME(w/o STI)-7

General Description

MECHANICAL

(1)

Rocker cover RH

(14) Cylinder head gasket

(27) Gasket

(2)

Rocker cover gasket RH

(15) Cylinder head LH

(28) Oil pipe RH

(3)

Front camshaft cap RH

(16) Intake camshaft LH

(29) Stud bolt

(4)

Intake camshaft cap RH

(17) Exhaust camshaft LH

(30) Union bolt with filter (with protru-

sion)

(5)

Intake camshaft RH

(18) Front camshaft cap LH

(31) Union bolt without filter (without

protrusion)

(6)

Oil flow control solenoid valve

(19) Intake camshaft cap LH

(32) Gasket

(7)

Exhaust camshaft cap RH

(20) Exhaust camshaft cap LH

(8)

Gasket

(21) Rocker cover gasket LH

Tightening torque: N·m (kgf-m, ft-lb)

(9)

Oil return cover

(22) Rocker cover LH

T1: 6.4 (0.7, 4.7)

(10) Exhaust camshaft RH

(23) Oil filler cap

T2: 9 (0.9, 6.6)

(11) Cylinder head bolt

(24) Oil filler duct

T3: 29 (3.0, 21.4)

(12) Oil seal

(25) O-ring

T4: <Ref. to ME(w/o STI)-68,

INSTALLATION, Cylinder
Head.>

(13) Cylinder head RH

(26) Oil pipe LH

T5: <Ref. to ME(w/o STI)-61,

INSTALLATION, Camshaft.>

ME(w/o STI)-8

General Description

MECHANICAL

3. CYLINDER HEAD AND VALVE ASSEMBLY

(1)

Exhaust valve

(5)

Intake valve oil seal

(9)

Valve lifter

(2)

Intake valve

(6)

Valve spring

(10) Exhaust valve oil seal

(3)

Cylinder head

(7)

Valve spring retainer

(11) Intake valve guide

(4)

Valve spring seat

(8)

Valve spring retainer key

(12) Exhaust valve guide

(3)

(1)

(12)

(10)

(4)

(6)

(7)

(8)

(9)

(10)

(4)

(6)

(7)

(8)

(9)

ME-04990

(12)

(2)

(11)

(4) (5)

(6)

(7) (8)

(9)

(11)

(4) (5)

(6)

(7) (8) (9)