check SUBARU LEGACY 1995 Service User Guide

B: INSPECTION
1. TIMING BELT
1) Check timing belt teeth for breaks, cracks, and wear. If
any fault is found, replace belt.
2) Check the condition of back side of belt; if any crack is
found, replace belt.
CAUTION:
Be careful not to let oil, grease or coolant contact
the belt. Remove quickly and thoroughly if this hap-
pens.
G2M0115
Do not bend the belt sharply.
Bending radius: h
60 mm (2.36 in) or more
2. BELT TENSION ADJUSTER
1) Visually check oil seals for leaks, and rod ends for
abnormal wear or scratches. If necessary, replace belt ten-
sion adjuster.
CAUTION:
Slight traces of oil at rod’s oil seal does not indicate a
problem.
2) While holding tensioner with both hands, push the rod
section against floor or wall ensuring the rod section will
react as follows:
(1) When applying a force of 147 N (15 kg, 33 lb), the
rod section should not sink.
(2) When applying a force of 147 to 490 N (15 to 50 kg,
33 to 110 lb), the rod section should maintain a projec-
tionally acting force and should not sink within 8.5 sec-
onds.
20
2-3SERVICE PROCEDURE
3. Timing Belt

B2M0108A
3) Measure the extension of rod beyond the body. If it is
not within specifications, replace with a new one.
Rod extension: H
15.4—16.4 mm (0.606—0.646 in)
3. BELT TENSIONER
1) Check mating surfaces of timing belt and contact point
of tension adjuster rod for abnormal wear or scratches.
Replace belt tensioner if faulty.
2) Check spacer and tensioner bushing for wear.
3) Check tensioner for smooth rotation. Replace if noise or
excessive play is noted.
4) Check tensioner for grease leakage.
4. BELT IDLER
1) Check idler for smooth rotation. Replace if noise or
excessive play is noted.
2) Check outer contacting surfaces of idler pulley for
abnormal wear and scratches.
3) Check idler for grease leakage.
5. SPROCKET
1) Check sprocket teeth for abnormal wear and scratches.
2) Make sure there is no free play between sprocket and
key.
3) Check crankshaft sprocket notch for sensor for damage
and contamination of foreign matter.
21
2-3SERVICE PROCEDURE
3. Timing Belt

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.
29
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.
30
2-3SERVICE PROCEDURE
4. Valve Rocker Assembly

3. CAMSHAFT RH
B2M0385A
1) Remove camshaft support RH.
2) Remove O-ring.
3) Remove camshaft.
4) Remove oil seal.
CAUTION:
Do not remove oil seal unless necessary.
Do not scratch journal surface when removing oil
seal.
G2M0137
B: INSPECTION
1. CAMSHAFT
1) Measure the bend, and repair or replace if necessary.
Limit:
0.025 mm (0.0010 in)
2) Check journal for damage and wear. Replace if faulty.
34
2-3SERVICE PROCEDURE
5. Camshaft

3) Measure outside diameter of camshaft journal and
inside diameter of cylinder head journal, and determine the
difference between the two (= oil clearance). If oil clear-
ance exceeds specifications, replace camshaft or cylinder
head as necessary.
Unit: mm (in)
ItemRight-hand camshaft Front Center Rear
Left-hand camshaft Rear Center Front
Clearance at journalStandard 0.055—0.090 (0.0022—0.0035 )
Limit 0.10 (0.0039 )
Camshaft journal O.D.31.935—31.950
(1.2573—1.2579 )37.435—37.450
(1.4738—1.4744 )37.935—37.950
(1.4935—1.4941 )
Journal hole I.D.32.005—32.025
(1.2600—1.2608 )37.505—37.525
(1.4766—1.4774 )38.005—38.025
(1.4963—1.4970 )
G2M0138
4) Check cam face condition; remove minor faults by
grinding with oil stone. Measure the cam height H; replace
if the limit has been exceeded.
Cam height: H
Standard
IN: 31.994—32.094 mm (1.2596—1.2635 in)
EX: 32.624—32.724 mm (1.2844—1.2883 in)
Limit
IN: 31.844 mm (1.2537 in)
EX: 32.474 mm (1.2785 in)
G2M0139
2. CAMSHAFT SUPPORT
Measure the thrust clearance of camshaft with dial gauge.
If the clearance exceeds the limit, replace camshaft sup-
port.
Standard:
0.030—0.260 mm (0.0012—0.0102 in)
Limit:
0.35 mm (0.0138 in)
35
2-3SERVICE PROCEDURE
5. Camshaft

C: INSPECTION
1. CYLINDER HEAD
1) Make sure that no crack or other damage exists. In
addition to visual inspection, inspect important areas by
means of red lead check.
Also make sure that gasket installing surface shows no
trace of gas and water leaks.
2) Place cylinder head on ST.
ST 498267200 CYLINDER HEAD TABLE
G2M0148
3) Measure the warping of the cylinder head surface that
mates with crankcase by using a straight edge and thick-
ness gauge.
If the warping exceeds 0.05 mm (0.0020 in), regrind the
surface with a surface grinder.
Warping limit:
0.05 mm (0.0020 in)
Grinding limit:
0.1 mm (0.004 in)
Standard height of cylinder head:
98.3 mm (3.870 in)
CAUTION:
Uneven torque for the cylinder head bolts can cause
warping. When reassembling, pay special attention to
the torque so as to tighten evenly.
G2M0149
B2M0074
2. VALVE SEAT
Inspect intake and exhaust valve seats, and correct the
contact surfaces with valve seat cutter if they are defective
or when valve guides are replaced.
Valve seat width: W
Intake
Standard
0.7 mm (0.028 in)
Limit
1.4 mm (0.055 in)
Exhaust
Standard
1.4 mm (0.055 in)
Limit
1.8 mm (0.071 in)
41
2-3SERVICE PROCEDURE
6. Cylinder Head

B2M0387A
B2M0076A
3. VALVE GUIDE
1) Check the clearance between valve guide and stem.
The clearance can be checked by measuring the outside
diameter of valve stem and the inside diameter of valve
guide with outside and inside micrometers respectively.
Clearance between the valve guide and valve stem:
Standard
Intake
0.035—0.062 mm (0.0014—0.0024 in)
Exhaust
0.040—0.067 mm (0.0016—0.0026 in)
Limit
0.15 mm (0.0059 in)
Valve guide inner diameter:
6.000—6.012 mm (0.2362—0.2367 in)
Valve stem outer diameters:
Intake
5.950—5.965 mm (0.2343—0.2348 in)
Exhaust
5.945—5.960 mm (0.2341—0.2346 in)
G2M0150
2) If the clearance between valve guide and stem exceeds
the specification, replace guide as follows:
(1) Place cylinder head on ST1 with the combustion
chamber upward so that valve guides enter the holes
in ST1.
(2) Insert ST2 into valve guide and press it down to
remove valve guide.
ST1 498267200 CYLINDER HEAD TABLE
ST2 499767200 VALVE GUIDE REMOVER
G2M0151
(3) Turn cylinder head upside down and place ST as
shown in the Figure.
ST 499767000 VALVE GUIDE ADJUSTER
B2M0388A
(4) Before installing new oversize valve guide, make
sure that neither scratches nor damages exist on the
inside surface of the valve guide holes in cylinder head.
(5) Put new valve guide, coated with sufficient oil, in
cylinder, and insert ST1 into valve guide. Press in until
the valve guide upper end is flush with the upper sur-
face of ST2.
ST1 499767200 VALVE GUIDE REMOVER
ST2 499767000 VALVE GUIDE ADJUSTER
42
2-3SERVICE PROCEDURE
6. Cylinder Head

B2M0077A
(6) Check the valve guide protrusion.
Valve guide protrusion: L
17.5—18.0 mm (0.689—0.709 in)
B2M0078
(7) Ream the inside of valve guide with ST. Gently
rotate the reamer clockwise while pressing it lightly into
valve guide, and return it also rotating clockwise. After
reaming, clean valve guide to remove chips.
ST 499767400 VALVE GUIDE REAMER
CAUTION:
Apply engine oil to the reamer when reaming.
If the inner surface of the valve guide is torn, the
edge of the reamer should be slightly ground with an
oil stone.
If the inner surface of the valve guide becomes lus-
trous and the reamer does not chips, use a new reamer
or remedy the reamer.
(8) Recheck the contact condition between valve and
valve seat after replacing valve guide.
43
2-3SERVICE PROCEDURE
6. Cylinder Head

G2M0153
4. INTAKE AND EXHAUST VALVE
1) Inspect the flange and stem of valve, and replace if
damaged, worn, or deformed, or if“H”is less than the
specified limit.
H:
Intake
Standard
1.0 mm (0.039 in)
Limit
0.8 mm (0.031 in)
Exhaust
Standard
1.2 mm (0.047 in)
Limit
0.8 mm (0.031 in)
Valve overall length:
Intake
101.0 mm (3.976 in)
Exhaust
101.2 mm (3.984 in)
2) Put a small amount of grinding compound on the seat
surface and lap the valve and seat surface. Also refer to 2.
VALVE SEAT [W6C2] at this time. Install a new intake valve
oil seal after lapping.
G2M0154
5. VALVE SPRINGS
1) Check valve springs for damage, free length, and ten-
sion. Replace valve spring if it is not to the specifications
presented below.
2) To measure the squareness of the valve spring, stand
the spring on a surface plate and measure its deflection at
the top using a try square.
Free length 44.05 mm (1.7342 in)
Squareness 2.5°, 1.9 mm (0.075 in)
Tension/spring height174.6—200.1 N
(17.8—20.4 kg, 39.2—45.0 lb)/ 36.0 mm
(1.417 in)
405.0—458.0 N
(41.3—46.7 kg, 91.1—103.0 lb)/
28.2 mm (1.110 in)
44
2-3SERVICE PROCEDURE
6. Cylinder Head