Valve Rocker Assembly - Subaru Legacy 2003 Service Manual

MECHANICAL

18.Valve Rocker Assembly

A: REMOVAL
1) Remove the V-belt. <Ref. to ME(H4SO)-41, RE-
MOVAL, V-belt.>
2) Remove the crankshaft
ME(H4SO)-43, REMOVAL, Crankshaft Pulley.>
3) Remove the belt cover. <Ref. to ME(H4SO)-45,
REMOVAL, Belt Cover.>
4) Remove the timing belt assembly. <Ref. to
ME(H4SO)-46, REMOVAL, Timing Belt Assem-
bly.>
5) Remove the camshaft sprocket. <Ref. to
ME(H4SO)-51, REMOVAL, Camshaft Sprocket.>
6) Disconnect the PCV hose and remove rocker
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.
( h )
( b )
( c ) ( e )
(2) Remove the valve rocker assembly.
VALVE ROCKER ASSEMBLY
pulley. <Ref.
( d )
( f )
( g ) ( a )
ME-00253
ME-00254
ME(H4SO)-54
B: INSTALLATION
1) Installation of valve rocker assembly
(1) Temporarily tighten the bolts (a) through (d)
equally as shown in the figure.
NOTE:
to
Do not allow the valve rocker assembly to gouge
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, 18.1 ft-lb)
( g )
( f )
2) Adjust the
ME(H4SO)-30, ADJUSTMENT, Valve Clearance.>
3) Install the rocker cover and connect PCV hose.
4) Install the
ME(H4SO)-51,
Sprocket.>
5) Install the timing belt assembly. <Ref. to
ME(H4SO)-47, INSTALLATION, Timing Belt As-
sembly.>
6) Install the belt cover. <Ref. to ME(H4SO)-45, IN-
STALLATION, Belt Cover.>
7) Install the
ME(H4SO)-43, INSTALLATION, CRANKSHAFT
PULLEY.>
8) Install the V-belt. <Ref. to ME(H4SO)-42, IN-
STALLATION, V-belt.>
C: DISASSEMBLY
1) Remove the bolts which secure rocker shaft.
2) Extract the rocker shaft. Remove the valve rock-
er arms, springs, plates and shaft supports from
rocker shaft.
NOTE:
Arrange all removed parts in order so that they can
be installed in their original positions.
3) Remove the nut and adjuster screw from valve
rocker.
( a ) ( c ) ( e )
( d ) ( b )
( h )
ME-00255
valve clearances.
camshaft sprocket.
INSTALLATION,
crankshaft pulley.
<Ref. to
<Ref. to
Camshaft
<Ref. to