Valve Rocker Assembly - Subaru Legacy 2004 Service Manual

18.Valve Rocker Assembly

A: REMOVAL
1) Remove the V-belts. <Ref. to ME(H4SO 2.0)-38,
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 in order to retain the valve rocker assembly.
( h )
( b )
( c ) ( e )
(2) Remove the valve rocker assembly.
B: INSTALLATION
1) Install the 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.
Valve Rocker Assembly
( f ) ( d )
( g ) ( a )
ME-00253
ME-00254
ME(H4SO 2.0)-51
(3) Tighten the bolts (a) through (d) to specified
torque.
Tightening torque:
!
25 N m (2.5 kgf-m, 18.1 ft-lb)
( g )
( a )
( f )
( d )
2) Adjust the valve clearance. <Ref. to ME(H4SO
2.0)-29, ADJUSTMENT, Valve Clearance.>
3) Install the rocker cover and connect PCV hose.
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)-38,
INSTALLATION, V-belt.>
C: DISASSEMBLY
1) Remove the bolts which secure the 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 supports installing
bolts):
!
5 N m (0.5 kgf-m, 3.6 ft-lb)
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.
MECHANICAL
( e )
( c )
( b )
( h )
ME-00255