Subaru Legacy (2005 year). Manual - part 67

 

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Subaru Legacy (2005 year). Manual - part 67

 

 

ME(H4SO 2.0)-51

MECHANICAL

Valve Rocker Assembly

18.Valve Rocker Assembly

A: REMOVAL

1) Remove the V-belts. <Ref. to ME(H4SO 2.0)-37,
REMOVAL, V-belt.>
2) Remove the crank pulley. <Ref. to ME(H4SO
2.0)-40, REMOVAL, Crank Pulley.>
3) Remove the timing belt cover. <Ref. to
ME(H4SO 2.0)-42, REMOVAL, Timing Belt Cov-
er.>
4) Remove the timing belt. <Ref. to ME(H4SO 2.0)-
43, REMOVAL, Timing Belt.>
5) Remove the cam sprocket. <Ref. to ME(H4SO
2.0)-48, REMOVAL, Cam Sprocket.>
6) Disconnect the PCV hose and remove the rock-
er cover.
7) Removal of valve rocker assembly

(1) Remove the bolts (a) through (h) in alpha-
betical sequence.

NOTE:
Leave two or three threads of bolts (g) and (h) en-
gaged to retain the valve rocker assembly.

(2) Remove the valve rocker assembly.

B: INSTALLATION

1) Installation of valve rocker assembly

(1) Temporarily tighten the bolts (a) through (d)
equally in order as shown in the figure.

NOTE:
Do not allow the valve rocker assembly to damage
knock pins.

(2) Tighten the bolts (e) through (h) to specified
torque.

(3) Tighten the bolts (a) through (d) to specified
torque.

Tightening torque:

25 N

⋅

m (2.5 kgf-m, 18.4 ft-lb)

2) Adjust the valve clearance. <Ref. to ME(H4SO
2.0)-29, ADJUSTMENT, Valve Clearance.>
3) Install the rocker cover and rocker cover gasket,
and then connect the PCV hose.

NOTE:
Use a new rocker cover gasket.
4) Install the cam sprocket. <Ref. to ME(H4SO
2.0)-48, INSTALLATION, Cam Sprocket.>
5) Install the timing belt. <Ref. to ME(H4SO 2.0)-
44, INSTALLATION, Timing Belt.>
6) Install the timing belt cover.
<Ref. to ME(H4SO 2.0)-42, INSTALLATION, Tim-
ing Belt Cover.>
7) Install the crank pulley. <Ref. to ME(H4SO 2.0)-
40, INSTALLATION, Crank Pulley.>
8) Install the V-belts. <Ref. to ME(H4SO 2.0)-37,
INSTALLATION, V-belt.>

C: DISASSEMBLY

1) Remove the bolts which secure rocker shaft.
2) Extract the rocker shaft. Remove the valve rock-
er arms, springs and shaft supports from rocker
shaft.

NOTE:
Keep all the removed parts in order for re-installing
in their original positions.
3) Remove the nut and adjusting screw from valve
rocker.

D: ASSEMBLY

1) Install the adjusting screw and nut to valve rock-
er.
2) Arrange the valve rocker arms, springs and shaft
supports in assembly order, and then insert the
valve rocker shaft.

Tightening torque (Shaft support installing 
bolt):

5 N

⋅

m (0.5 kgf-m, 3.7 ft-lb)

ME-00253

( a )

( b )

( c )

( d )

( e )

( f )

( g )

( h )

ME-00254

ME-00255

( a )

( b )

( c )

( d )

( e )

( f )

( g )

( h )

ME(H4SO 2.0)-52

MECHANICAL

Valve Rocker Assembly

NOTE:
Valve rocker arms, rocker shaft and shaft supports
have identification marks. Ensure the parts with
same markings are properly assembled.
3) Install the valve rocker shaft securing bolts.

E: INSPECTION

1. VALVE ROCKER ARM AND ROCKER 
SHAFT

1) Measure the inner diameter of valve rocker arm
and outer diameter of valve rocker shaft, and con-
firm the difference (oil clearance) between the two
values.

Clearance between arm and shaft:

Standard

0.020 — 0.054 mm (0.0008 — 0.0021 in)

2) If the oil clearance exceeds the standard, re-
place the valve rocker arm or shaft, whichever
shows greater amount of wear.

Rocker arm inside diameter:

22.020 — 22.041 mm (0.8669 — 0.8678 in)

Rocker shaft diameter:

21.987 — 22.000 mm (0.8656 — 0.8661 in)

3) If the cam or valve contact surface of valve rock-
er arm is worn or dented excessively, replace the
valve rocker arm.
4) Check that the valve rocker arm roller rotates
smoothly. If not, replace the valve rocker arm.

ME-00256

ME-00257

ME(H4SO 2.0)-53

MECHANICAL

Camshaft

19.Camshaft

A: REMOVAL

1) Remove the V-belts. <Ref. to ME(H4SO 2.0)-37,
REMOVAL, V-belt.>
2) Remove the crank pulley. <Ref. to ME(H4SO
2.0)-40, REMOVAL, Crank Pulley.>
3) Remove the timing belt cover. <Ref. to
ME(H4SO 2.0)-42, REMOVAL, Timing Belt Cov-
er.>
4) Remove the timing belt. <Ref. to ME(H4SO 2.0)-
43, REMOVAL, Timing Belt.>
5) Remove the cam sprocket. <Ref. to ME(H4SO
2.0)-48, REMOVAL, Cam Sprocket.>
6) Remove the crank sprocket. <Ref. to ME(H4SO
2.0)-50, REMOVAL, Crank Sprocket.>
7) Remove the timing belt cover No. 2 (LH).
8) Remove the timing belt cover No. 2 (RH).

NOTE:
Do not damage or lose the seal rubber when re-
moving the timing belt covers.

9) Remove the tensioner bracket.

10) Remove the camshaft position sensor support.
(LH side only)
11) Remove the oil level gauge guide. (LH side
only)
12) Remove the valve rocker assembly. <Ref. to
ME(H4SO 2.0)-51, REMOVAL, Valve Rocker As-
sembly.>

13) Remove the camshaft cap.

(1) Remove the bolts (a) and (b) in alphabetical
sequence.

(2) Equally loosen the bolts (c) through (j) all the
way in alphabetical sequence.

(3) Remove the bolts (k) through (p) in alpha-
betical sequence using ST.

ST

499497000

TORX PLUS

®

(4) Remove the camshaft cap.

14) Remove the camshaft.
15) Remove the oil seal.

ME-00258

ME-00259

ME-00260

( b )

( a )

ME-00261

( c )

( e )

( g )

( h )

( d )

( f )

( j )

( i )

ME-00262

( k )

( o )

( n )

( l )

( p )

( m )

ME-00263

ME(H4SO 2.0)-54

MECHANICAL

Camshaft

16) Remove the plug from rear side of camshaft.

CAUTION:
• Do not remove the oil seal unless necessary.
• Do not scratch the journal surface when re-
moving the oil seal.

B: INSTALLATION

1) Apply a thin coat of engine oil to camshaft jour-
nals, and install the camshaft.
2) Install the camshaft cap.

(1) Apply liquid gasket to the mating surfaces of
camshaft cap.

Liquid gasket:

THREE BOND 1280B (Part No. K0877YA018)

NOTE:
• Apply a coat of liquid gasket of 3 mm (0.12 in) in
diameter (A) along the edge (B) of camshaft cap
(C) mating surface.
• Assemble them within 20 min. after applying liq-
uid gasket.

(2) Temporarily tighten the bolts (g) through (j)
in alphabetical sequence.

(3) Install the valve rocker assembly.

(4) Tighten the bolts (a) through (h) in alphabet-
ical sequence.

Tightening torque:

25 N

⋅

m (2.5 kgf-m, 18.4 ft-lb)

(5) Tighten the TORX

®

 bolts (i) through (n) in al-

phabetical sequence using ST.

ST

499497000

TORX PLUS

®

Tightening torque:

18 N

⋅

m (1.8 kgf-m, 13.3 ft-lb)

ME-00264

ME-00265

(A)

(B)

(C)

ME-00266

( g )

( h )

( j )

( i )

ME-00267

ME-00268

( a )

( b )

( c )

( d )

( e )

( f )

( g )

( h )

ME-00269

( i )

( j )

( m )

( n )

( k )

( l )

 

 

 

 

 

 

 

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