1997 SUBARU LEGACY service

2. BELT TENSIONER AND IDLER
B2M0070A
Tightening torque: N⋅m (kg-m, ft-lb)
T: 39±4 (4.0±0.4, 28.9±2.9)
B2M0109A
1) Installation of belt tension adjuster
Insert stopper pin 1.5 mm (0.059 in) diameter into place
while pushing tension adjuster rod into body using a press.
CAUTION:
Do not allow press pressure to exceed 9,807 N (1,000
kg, 2,205 lb).
Do not release press pressure until stopper pin is
completely inserted.
Push tension adjuster rod vertically.
Press-in the push rod gradually taking three minutes
or more.
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2-3SERVICE PROCEDURE
3. Timing Belt

2) Install belt tensioner and spacer.
3) Install belt idler.
B2M0110
4) Temporarily tighten bolts while belt tension adjuster is
pushed all the way to the right.
3. TIMING BELT
B2M0071A
Tightening torque: N⋅m (kg-m, ft-lb)
T1: 25±2 (2.5±0.2, 18.1±1.4)
T2: 39±4 (4.0±0.4, 28.9±2.9)
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2-3SERVICE PROCEDURE
3. Timing Belt

G2M0122
1) Installation of timing belt
(1) Using ST, turn left and right camshaft sprockets so
that their alignment marks come to top positions.
ST 499207100 CAMSHAFT SPROCKET WRENCH
B2M0417A
(2) While aligning alignment mark on timing belt with
marks on sprockets, position timing belt properly.
CAUTION:
Ensure belt’s rotating direction is correct.
2) Install belt idler No. 2.
3) Install belt idler.
B2M0111
4) Loosen belt tension adjuster attaching bolts and move
adjuster all the way to the left. Tighten the bolts.
G2M0125
5) After ensuring that the marks on timing belt and cam-
shaft sprockets are aligned, remove stopper pin from belt
tension adjuster.
CAUTION:
After properly installing timing belt, remove rocker
cover and ensure that the valve lash adjuster contains
no air.
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2-3SERVICE PROCEDURE
3. Timing Belt

4. CRANKSHAFT PULLEY AND BELT COVER
G2M0126
Tightening torque: N⋅m (kg-m, ft-lb)
T1: 5±1 (0.5±0.1, 3.6±0.7)
T2: 127±10 (13.0±1.0, 94±7)
1) Install front belt cover.
2) Install right side belt cover.
3) Install left side belt cover.
4) Install crankshaft pulley.
G2M0108
5) Install pulley bolt.
To lock crankshaft, use ST.
ST 499977000 CRANKSHAFT PULLEY WRENCH
6) Install V-belt.
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2-3SERVICE PROCEDURE
3. Timing Belt

4. Valve Rocker Assembly
A: REMOVAL
B2M1206A
B2M1207A
1) Disconnect PCV hose and remove rocker cover.
2) Removal of valve rocker assembly
(1) Remove bolts

1through
4in numerical sequence.
CAUTION:
Leave two or three threads of bolt

1engaged to retain
valve rocker assembly.
(2) Equally loosen bolts

5through
8all the way, being
careful that knock pin is not gouged.
(3) Remove valve rocker assembly.
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2-3SERVICE PROCEDURE
4. Valve Rocker Assembly

B: DISASSEMBLY
B2M1264A
1) Remove bolts which secure rocker shaft.
2) Extract rocker shaft. Remove valve rocker arms,
springs and shaft supports from rocker shaft.
CAUTION:
Arrange all removed parts in order so that they can be
installed in their original positions.
3) Loosen rocker nut, and then remove rocker screw and
nut from rocker arm.
CAUTION:
Do not remove rocker screw and nut unless necessary.
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2-3SERVICE PROCEDURE
4. Valve Rocker Assembly

G2M0131
C: INSPECTION
1. HYDRAULIC LASH ADJUSTER
1) Bleed air from hydraulic lash adjuster as described
below:
(1) While dipping hydraulic lash adjuster in engine oil,
as shown in Figure, push check ball in usinga2mm
(0.08 in) diameter round bar.
(2) With check ball pushed in, manually move plunger
up and down at one second intervals until air bubbles
disappear.
(3) After air bubbles disappear, remove round bar and
quickly push plunger in to ensure it is locked. If plunger
does not lock properly, replace hydraulic lash adjuster.
CAUTION:
Leave hydraulic lash adjuster (after air is bled) in
engine oil until it is ready for installation.
2) Replace hydraulic lash adjuster with a new one if valve
contact surface is scratched.
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2-3SERVICE PROCEDURE
4. Valve Rocker Assembly

B2M0072
B2M0073
2. VALVE ROCKER ARM
1) Measure inside diameter of valve rocker arm and out-
side diameter of valve rocker shaft, and determine the dif-
ference between the two (= oil clearance).
Clearance between arm and shaft:
Standard
0.020—0.054 mm (0.0008—0.0021 in)
Limit
0.10 mm (0.0039 in)
If oil clearance exceeds specifications, replace valve
rocker arm or shaft.
NOTE:
Replace 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)
2) Measure inside diameter of rocker shaft support and
outside diameter of valve rocker shaft, and determine the
difference between the two (= oil clearance).
Clearance between support and shaft:
Standard
0.005—0.039 mm (0.0002—0.0015 in)
Limit
0.05 mm (0.0020 in)
If oil clearance exceeds specifications, replace rocker shaft
support or shaft.
NOTE:
Replace rocker shaft support or shaft, whichever shows
greater amount of wear.
Rocker shaft support inside diameter:
22.005—22.026 mm (0.8663—0.8672 in)
Rocker shaft diameter:
21.987—22.000 mm (0.8656—0.8661 in)
3) If cam or valve contact surface of valve rocker arm is
worn or dented excessively, replace valve rocker arm.
4) Check that valve rocker arm roller rotates smoothly. If
not, replace valve rocker arm.
3. VALVE ROCKER SHAFT
Visually check oil relief valve of shaft end for any of the
following abnormalities.
Breaks in check ball body
Foreign particles caught in valve spring
Oil leakage at check ball
CAUTION:
Repair or replace valve rocker shaft as necessary.
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2-3SERVICE PROCEDURE
4. Valve Rocker Assembly