engine SUBARU LEGACY 1997 Service Repair Manual

10. Performance Test
1. VEHICLE SET UP
In order to obtain meaningful test results, the vehicle must
be set up to meet the following conditions:
1) Vehicle in shade
2) No wind
3) All vehicle doors closed
4) Front windows opened
5) Hood opened
6) Engine speed set at 1,500 rpm.
7) A/C ON
8) Temperature control lever—Maximum cold
9) Air source—Recirculation
10) Blower speed—4th position (High)
11) Operate A/C for 10 minutes (Minimum) before taking
measurement.
2. MEASUREMENTS
After 10 minutes (Minimum) of A/C operation and using
accurate test equipment, take the following measurements
(in order):
1) Evaporator intake air temperature at recirculation door.
2) Evaporator discharge air temperature at center grill.
3) Condenser (Ambient) intake air temperature measured
0.9 m (3 ft) in front and in line with the center of the con-
denser.
4) Suction (Low) side pressure
5) Discharge (High) side pressure
NOTE:
If only one thermometer is available; 1) take the ambient
measurement first; then 2) the intake air; and 3) dis-
charge air temperature.
28
4-7SERVICE PROCEDURE
10. Performance Test

Pulley arrangement Tension mm (in)/98N (10 kg, 22 lb)
G4M0939
AB
*New belt:
7.0—9.0
(0.276—0.354)
Existing belt:
9.0—11.0
(0.354—0.433)*New belt:
7.5—8.5
(0.295—0.335)
Existing belt:
9.0—10.0
(0.354—0.394)
* When replacing belts with new ones, adjust tensions to
specification and then readjust to the same specification
after running engine for 5 minutes.
Figures in table refer to the number of grooves in pulleys.
C/P : Crankshaft pulley
ALT : Alternator pulley
P/S : Power steering oil pump pulley
A/C : Air conditioner compressor pulley
I/P : Idler pulley
G4M0634
CAUTION:
Ensure that the V-belt is aligned correctly. If it is not,
check for loose bolts.
The V-belt should not be too tight or too loose.
A belt which is too tight may break bearing or cause
gas to leak from the shaft seal. A belt which is too
loose slips, thereby causing the belt cut.
After completing the compressor installation and
testing the system operation, check and adjust the ten-
sion of both V-belts again.
B4M0761A
7) Install high-pressure hose
2(Flexible hose Pd).
Connect high-pressure hose with compressor.
CAUTION:
Be sure to apply compressor oil to the periphery of
O-ring.
B4M0761A
8) Install low-pressure hose
1(Flexible hose Ps).
Connect low-pressure hose with compressor.
CAUTION:
Be sure to apply compressor oil to the periphery of
O-ring.
33
4-7SERVICE PROCEDURE
11. Compressor

Condition Probable cause Corrective action
FAULTY CONDENSER
G4M0680
No cooling action;
Engine may overheat.
Suction line is very hot.Condenser is often
found not functioning
well.Check condenser
cooling fan.
Check condenser for
dirt accumulation.
Check engine cooling
system for overheat.
Check for refrigerant
overcharge.
If pressure remains
high in spite of all
above actions taken,
remove and inspect
the condenser for pos-
sible oil clogging.
HIGH-PRESSURE LINE BLOCKED
G4M0681
Insufficient cooling;
Frosted high-pressure
liquid line.Drier is clogged, or
restriction in high-pres-
sure line.1. Discharge system.
2. Remove receiver
drier or strainer and
replace it.
3. Evacuate and charge
system.
FAULTY COMPRESSOR
G4M0682
Insufficient cooling Internal problem is in
compressor, or dam-
aged gasket and valve.1. Discharge system.
2. Remove and check
compressor.
3. Repair or replace
compressor.
4. Check oil level.
5. Replace receiver
drier.
6. Evacuate and charge
system.
44
4-7DIAGNOSTICS
2. Performance Test Diagnosis

1. ENGINE COMPARTMENT AND ROOM
B5M0187A
0Cowl panel weather attaching hole 6 mm (0.24 in) dia.

1Hood hinge front attaching hole M8

2Strut mount attaching hole (Front center) 9.5 mm (0.374 in)
dia.

3Front fender attaching hole (Tip) M6

4Rear upper surface of front side frame 12 mm (0.47 in) dia.

5Middle upper surface of front side frame 20 mm (0.79 in) dia.

6Front side frame front upper surface 14 x 16 mm (0.55 x 0.63
in) dia. oblong hole

7Side frame of front side frame 12 mm (0.47 in) dia.

8Headlight attaching hole at radiator side panel 6.2x9mm
(0.244 x 0.35 in) dia.

9Radiator panel side (LWR) gauge hole 23 mm (0.91 in) dia.

23Rear strut mount attaching hole (Side) 10 mm (0.39 in) dia.

24Rear strut mount attaching hole (Center) 12 mm (0.47 in) dia.

25Radiator panel (UPR) middle hole 6 mm (0.24 in) dia.

26Front fender attaching hole at radiator panel side M6

27Front fender attaching hole at front pillar lower portion M6

28Hinge middle hole at front pillar center 10 mm (0.39 in) dia.

29Front fender attaching hole at front pillar center portion M6

30Retainer attaching square hole at front pillar7x7mm(0.28
x 0.28 in)
31Retainer attaching hole at center pillar (Front) 3.5 mm (0.138
in) dia.

32Retainer attaching hole at center pillar (Rear) 3.5 mm (0.138
in) dia.

33Lower side of rear door hinge M8

34Center pillar (LWR) gauge hole 27 mm (1.06 in) dia.

35Rear quarter outer corner patch attaching hole 5.2 mm (0.205
in) dia.

39Front rail center notch

40Front glass upper locating notch RH: 6.5 mm (0.256 in) dia.,
LH: 6.5 x 10 mm (0.256 x 0.39 in) dia. oblong hole

41Stud bolt lower locating notch

48Front center of rear floor pan 8 mm (0.31 in) dia.

51Front upper pillar (Inner) 7 mm (0.28 in) dia.

52Front seat belt adjust plate attaching hole 12 mm (0.47 in)
dia.

53Rear door hinge middle hole 10 mm (0.39 in) dia.

54Rear floor, near door 8 mm (0.31 in) dia.

55Trim upper attaching hole at 6 light 8 mm (0.31 in) dia.

56Trim lower attaching hole at 6 light 8 mm (0.31 in) dia.

58Rear floor, near floor strut 15 x 20 mm (0.59 x 0.79 in) dia.
oblong hole
3
5-1SERVICE DATA
2. Body Datum Points

1. Hood
The hood lock has a dual locking design which consists of
a main lock and a safety lock mechanism. When the
release knob located at the front pillar on the driver’s side
is pulled back, the main lock is released through the cable
attached to the knob.
The safety lock can be released by pushing the lever pro-
truding above the front grill while opening the hood.
G5M0137
A: REMOVAL
1. HOOD
1) Open front hood, and remove washer hose.
2) Remove attaching bolts.
3) Detach front hood from hinges.
B5M0267
2. HOOD LOCK
1) Open front hood and remove front grille.
2) Remove bolts which secure lock assembly to radiator
panel, and remove lock assembly.
3) Disconnect release cable from lock assembly.
B5M0319
3. RELEASE CABLE
1) Remove front grille.
2) Remove release cable from opener lever in passenger
compartment.
3) Remove release cable from lock assembly.
4) Remove cable clip from engine compartment.
B5M0465A
4. HOOD DUCT
1) Open front hood.
2) Remove attaching tapping screws and screw rivet, then
remove hood inner.
3) Remove attaching nuts, then remove hood duct.
33
5-1SERVICE PROCEDURE
1. Hood

B5M0275
9) Remove bolts (engine compartment side) from bumper
stays.
B5M0276
10) Remove front bumper assembly.
NOTE:
Front bumper surface is accessible for removal after
removing the following parts:
Two bolts (on the lower center of bumper), mud guard,
bolts (on the side of bumper), front grille, headlight, clips
(on both sides of front bumper), clips (on the upper section
of bumper), and clips (on the lower section of bumper).
G6M0095
2. OUTBACK WITH STEP ROOF
1) Disconnect the ground cable from the battery.
B5M0273
2) Remove two bolts from lower center of bumper.
3) Remove mud guard.
NOTE:
It is not necessary to remove the entire mud guard.
Remove clips from the front section of mud guard, if nec-
essary.
4) Remove the canister.
B5M0274
5) Remove two bolts from side of bumper.
6) Remove front grill.
7) Remove headlight.
39
5-1SERVICE PROCEDURE
4. Front Bumper

B5M0376
8) Remove fog lamps.
9) Remove clips from both sides of front bumper.
NOTE:
When removing, push the pin at the center of clip with a
thin screwdriver.
B5M0275
10) Remove bolts (engine compartment side) from
bumper stays.
B5M0406
11) Remove front bumper assembly.
NOTE:
Front bumper surface is accessible for removal after
removing the following parts:
Two bolts (on the lower center of bumper), mud guard,
bolts (on the side of bumper), front grille, headlight, clips
(on both sides of front bumper), clips (on the upper section
of bumper), and clips (on the lower section of bumper).
B5M0375A
B: INSTALLATION
1. EXCEPT OUTBACK WITH STEP ROOF
To install the front bumper, reverse the above removal pro-
cedures.
CAUTION:

Be extremely careful to prevent scratches on
bumper face as it is made of resin.

Be careful not to scratch the body when removing or
installing the bumper.

When installing canister, insert air vent hose of can-
ister into the hole on body.

To facilitate installation of front bumper, insert the
protrusion inside bumper into the groove of body.
40
5-1SERVICE PROCEDURE
4. Front Bumper

1. Engine Electrical
A: SPECIFICATIONS
1. EXCEPT 2200 cc MODEL
Item Designation
StarterType Reduction type
ModelMT
TN128000-8311AT
TN128000-8321
Manufacturer NIPPONDENSO TENNESSEE
Voltage and output 12 V — 1.0 kW 12 V — 1.4 kW
Direction of rotation Counterclockwise (when observed from pinion)
Number of pinion teeth 8 9
No-load
characteristicsVoltage 11 V
Current 90 A or less
Rotating
speed3,000 rpm or more 2,900 rpm or more
Load
characteristicsVoltage 8 V
Current 280 A or less 370 A or less
Torque 9.8 Nâ‹…m (1.0 kg-m, 7.2 ft-lb) 13.7 Nâ‹…m (1.4 kg-m, 10.1 ft-lb)
Rotating
speed900 rpm or more 880 rpm or more
Lock
characteristicsVoltage 5 V
Current 800 A or less 1,050 A or less
Torque 27.5 Nâ‹…m (2.8 kg-m, 20.3 ft-lb) or more
GeneratorType Rotating-field three-phase type, Voltage regulator built-in type
Model LR185-701H
Manufacturer HITACHI AUTOMOTIVE PRODUCTS
Voltage and output 12 V — 85 A
Polarity on ground side Negative
Rotating direction Clockwise (when observed from pulley side)
Armature connection 3-phase Y-type
Output current1,500 rpm — 35 A or more
2,500 rpm — 62 A or more
5,000 rpm — 82 A or more
Regulated voltage 14.5
+0.3
0.4V [20°C (68°F)]
Ignition
coilModel F-569-01R
Manufacturer Diamond
Primary coil resistance 0.69Ω±10%
Secondary coil resistance 21.0 kΩ±15%
Insulation resistance between
primary terminal and caseMore than 10 MΩ
Spark
plugType and manufacturerRC10YC4 .......... CHAMPION
Alternate
(BKR6E-11 .......... NGK
K20PR-U11 .......... NIPPONDENSO)
Thread size mm 14, P = 1.25
Spark gap mm (in) 1.0 — 1.1 (0.039 — 0.043)
2
6-1SPECIFICATIONS AND SERVICE DATA
1. Engine Electrical

2. 2200 cc MODEL
Item Designation
StarterType Reduction type
ModelMT
TN128000-8311AT
TN128000-8321
Manufacturer NIPPONDENSO TENNESSEE
Voltage and output 12 V—1.0 kW 12 V—1.4 kW
Direction of rotation Counterclockwise (when observed from pinion)
Number of pinion teeth 8 9
No-load
characteristicsVoltage 11 V
Current 90 A or less
Rotating
speed3,000 rpm or more 2,900 rpm or more
Load
characteristicsVoltage 8 V
Current 280 A or less 370 A or less
Torque 9.8 Nâ‹…m (1.0 kg-m, 7.2 ft-lb) 13.7 Nâ‹…m (1.4 kg-m, 10.1 ft-lb)
Rotating
speed900 rpm or more 880 rpm or more
Lock
characteristicsVoltage 5 V
Current 800 A or less 1,050 A or less
Torque 27.5 Nâ‹…m (2.8 kg-m, 20.3 ft-lb) or more
GeneratorType Rotating-field three-phase type, Voltage regulator built-in type
Model LR185-701H
Manufacturer HITACHI AUTOMOTIVE PRODUCTS
Voltage and output 12 V—85 A
Polarity on ground side Negative
Rotating direction Clockwise (when observed from pulley side)
Armature connection 3-phase Y-type
Output current1,500 rpm—35 A or more
2,500 rpm—62 A or more
5,000 rpm—82 A or more
Regulated voltage 14.5
+0.3
0.4V [20°C (68°F)]
Ignition
coilModel FH0047-01R
Manufacturer DEMCO
Primary coil resistance 0.73Ω±10%
Secondary coil resistance 12.8 kΩ±15%
Insulation resistance between
primary terminal and caseMore than 10 MΩ
Spark
plugType and manufacturerRC10YC4 .......... CHAMPION
Alternate
(BKR6E-11 .......... NGK
K20PR-U11 .......... NIPPONDENSO)
Thread size mm 14, P = 1.25
Spark gap mm (in) 1.0—1.1 (0.039—0.043)
3
6-1SPECIFICATIONS AND SERVICE DATA
1. Engine Electrical

3. Spark Plug
A: REMOVAL AND INSTALLATION
CAUTION:
All spark plugs installed on an engine, must be of the
same heat range.
Spark plug:
CHAMPION: RC10YC4
(Alternate)
NGK: BKR6E-11
NIPPONDENSO: K20PR-U11
1) Remove spark plug cords by pulling boot, not cord itself.
2) Remove spark plugs.
3) When installing spark plugs on cylinder head, use spark
plug wrench.
Tightening torque (Spark plug):
20.6±2.9 N⋅m (2.10±0.30 kg-m, 15.19±2.14 ft-lb)
CAUTION:
The above torque should be only applied to new spark
plugs without oil on their threads.
In case their threads are lubricated, the torque should
be reduced by approximately 1/3 of the specified
torque in order to avoid their over-stressing.
4) Connect spark plug cords.
G6M0086
B: INSPECTION
Check electrodes and inner and outer porcelain of plugs,
noting the type of deposits and the degree of electrode
erosion.
G6M0087
1) Normal
Brown to grayish-tan deposits and slight electrode wear
indicate correct spark plug heat range.
23
6-1SERVICE PROCEDURE
3. Spark Plug