engine SUBARU LEGACY 1997 Service Repair Manual

5) After remounting engine and transmission on body;

6) Bleed air from oil line with the help of a co-worker.

G2M0242
4. Clutch Disc and Cover
A: REMOVAL
1) Install ST on flywheel.
ST 498497100 CRANKSHAFT STOPPER
2) Remove clutch cover and clutch disc.
CAUTION:
Take care not to allow oil on the clutch disc facing.
Do not disassemble either clutch cover or clutch
disc.
G2M0243
3) Remove flywheel.
B2M0328
B: INSPECTION
1. CLUTCH DISC
1) Facing wear
Measure the depth of rivet head from the surface of facing.
Replace if facings are worn locally or worn down to less
than the specified value.
Depth of rivet head:
Standard value
1.3—1.9 mm (0.051—0.075 in)
Limit of sinking
0.3 mm (0.012 in)
CAUTION:
Do not wash clutch disc with any cleaning fluid.
12
2-10SERVICE PROCEDURE
3. Release Bearing and Lever - 4. Clutch Disc and Cover

5) After remounting engine and transmission on body;

6) Bleed air from oil line with the help of a co-worker.

G2M0242
4. Clutch Disc and Cover
A: REMOVAL
1) Install ST on flywheel.
ST 498497100 CRANKSHAFT STOPPER
2) Remove clutch cover and clutch disc.
CAUTION:
Take care not to allow oil on the clutch disc facing.
Do not disassemble either clutch cover or clutch
disc.
G2M0243
3) Remove flywheel.
B2M0328
B: INSPECTION
1. CLUTCH DISC
1) Facing wear
Measure the depth of rivet head from the surface of facing.
Replace if facings are worn locally or worn down to less
than the specified value.
Depth of rivet head:
Standard value
1.3—1.9 mm (0.051—0.075 in)
Limit of sinking
0.3 mm (0.012 in)
CAUTION:
Do not wash clutch disc with any cleaning fluid.
12
2-10SERVICE PROCEDURE
3. Release Bearing and Lever - 4. Clutch Disc and Cover

B2M0329A
2) Hardened facing
Correct by using emery paper or replace.
3) Oil soakage on facing
Replace clutch disc and inspect transmission front oil seal,
transmission case mating surface, engine rear oil seal and
other points for oil leakage.
B2M0330A
4) Deflection on facing
If deflection exceeds the specified value at the outer cir-
cumference of facing, repair or replace.
Limit for deflection:
1.0 mm (0.039 in) at R = 107 mm (4.21 in)
B2M0333A
5) Worn spline, loose rivets and torsion spring failure
Replace defective parts.
G2M0248
2. CLUTCH COVER
Visually check for the following items without
disassembling, and replace or repair if defective.
1) Loose thrust rivet.
2) Damaged or worn bearing contact area at center of
diaphragm spring.
G2M0249
3) Damaged or worn disc contact surface of pressure
plate.
4) Loose strap plate setting bolt.
5) Worn diaphragm sliding surface.
13
2-10SERVICE PROCEDURE
4. Clutch Disc and Cover

1. Clutch System
Condition Possible cause and testing Corrective action
1. Clutch slip-
pageIt is hard to perceive clutch slippage in the early stage, but pay attention to the following symptoms.
(a) Engine revs up when shifting.
(b) High speed driving is impossible; especially rapid acceleration impossible and vehicle speed does not increase in
proportion to an increase in engine speed.
(c) Power falls, particularly when ascending a slope, and there is a smell of burning of the clutch facing.
Method of testing: Put the vehicle in stationary condition with parking brake fully applied. Disengage the clutch and
shift the transmission gear into the first. Gradually allow the clutch to engage while gradually increasing the engine
speed. The clutch function is satisfactory if the engine stalls. However, the clutch is slipping if the vehicle does not
start off and the engine does not stall.
(a) No clutch pedal play Readjust.
(b) No release lever end play Readjust.
(c) Clutch facing smeared by oil Replace.
(d) Worn clutch facing Replace.
(e) Deteriorated diaphragm spring Replace.
(f ) Distorted pressure plate or flywheel Correct or replace.
(g) Defective release bearing holder Correct or replace.
(h) Defective pedal and cable system Correct or replace.
2. Clutch
drags.As a symptom of this trouble, a harsh scratching noise develops and control becomes quite difficult when shifting
gears. The symptom becomes more apparent when shifting into the first gear. However, because much trouble of the
this sort is due to defective synchronization mechanism, carry out the test as described after.
Method of testing: Refer to DIAGNOSTIC DIAGRAM on page after.
It may be judged as insufficient disengagement of clutch if any noise occurs during this test.
(a) Excessive clutch pedal play Readjust.
(b) Excessive clutch release lever play Readjust.
(c) Worn or rusty clutch disc hub spline Replace clutch disc.
(d) Excessive deflection of clutch disc facing Correct or replace.
(e) Seized crankshaft pilot needle bearing Replace.
(f ) Malfunction of pedal and cable system Correct or replace.
(g) Cracked clutch disc facing Replace.
(h) Sticked clutch disc (smeared by oil or water) Replace.
3. Clutch chat-
ters.Clutch chattering is an unpleasant vibration to the whole body when the vehicle is just started with clutch partially
engaged.
(a) Improper clutch cable routing Correct.
(b) Adhesion of oil on the facing Replace clutch disc.
(c) Weak or broken torsion spring Replace clutch disc.
(d) Defective facing contact or excessive disc Replace clutch disc defection.
(e) Warped pressure plate or flywheel Correct or replace.
(f ) Loose disc rivets Replace clutch disc.
(g) Loose engine mounting Retighten or replace mounting.
(h) Improper adjustment of pitching stopper Adjustment.
19
2-10DIAGNOSTICS
1. Clutch System

Condition Possible cause and testing Corrective action
4. Noisy
clutchExamine whether the noise is generated when the clutch is disengaged, engaged, or partially engaged.
(a) Broken, worn or unlubricated release bearing Replace release bearing.
(b) Insufficient lubrication of pilot bearing Apply grease.
(c) Loose clutch disc hub Replace clutch disc.
(d) Loose torsion spring retainer Replace clutch disc.
(e) Deteriorated or broken torsion spring Replace clutch disc.
5. Clutch
grabs.When starting the vehicle with the clutch partially engaged, the clutch engages suddenly and the vehicle jumps
instead of making a smooth start.
(a) Grease or oil on facing Replace clutch disc.
(b) Deteriorated cushioning spring Replace clutch disc.
(c) Worn or rusted spline of clutch disc or mainTake off rust, apply grease or replace clutch shaft disc or
mainshaft.
(d) Deteriorated or broken torsion spring Replace clutch disc.
(e) Loose engine mounting Retighten or replace mounting.
(f ) Deteriorated diaphragm spring Replace.
20
2-10DIAGNOSTICS
1. Clutch System

1. Engine Mounting
G2M0258

1Front cushion rubber


2Front engine mounting bracketTightening torque: N⋅m (kg-m, ft-lb)
T1: 26±7 (2.7±0.7, 19.5±5.1)
T2: 41±10 (4.2±1.0, 30±7)
T3: 79±15 (8.0±1.5, 58±11)
2
2-11COMPONENT PARTS
1. Engine Mounting

1. General Precaution
1) Remove or install engine and transmission in an area
where chain hoists, lifting devices, etc. are available for
ready use.
2) Be sure not to damage coated surfaces of body panels
with tools or stain seats and windows with coolant or oil.
Place a cover over fenders, as required, for protection.
3) Prior to starting work, prepare the following:
Service tools, clean cloth, containers to catch coolant and
oil, wire ropes, chain hoist, transmission jacks, etc.
4) Lift-up or lower the vehicle when necessary. Make sure
to support the correct positions. (Refer to Chapter 1-3
“General Information”.)
7
2-11SERVICE PROCEDURE
1. General Precaution

2. Engine
A: REMOVAL
1. Set the vehicle on lift arms.
2. Open front hood and support with a stay.
3. Release fuel pressure.
4. Disconnect battery cable and remove battery from vehicle.
5. Drain coolant.
6. Remove cooling system.
With A/C
7. Collect refrigerant, and remove pressure hoses.
8. Remove air intake system.
9. Remove canister and bracket.
10. Disconnect connectors, cables and hoses.
11. Remove power steering pump from bracket.
12. Remove front exhaust pipe and center exhaust pipe.
13. Remove nuts which hold lower side of transmission to
engine.
14. Remove nuts which install front cushion rubber onto front
crossmember.
AT model
15. Separate torque converter from drive plate.
16. Remove pitching stopper.
17. Disconnect fuel delivery hose, return hose and evaporation
hoses.
18. Support engine with a lifting device and wire ropes.
19. Support transmission with a garage jack.
20. Remove bolts which hold upper side of transmission to
engine.
21. Remove engine from vehicle.















8
2-11SERVICE PROCEDURE
2. Engine

1) Set the vehicle on lift arms.
2) Open front hood fully and support with stay.
G2M0341
3) Release fuel pressure.
(1) Disconnect fuel tank connector.
(2) Start the engine, and run until it stalls.
(3) After the engine stalls, crank it for five seconds
more.
(4) Turn ignition switch to“OFF”.

G6M0095
4) Disconnect battery cables and remove battery from
vehicle.
B2M0015A
5) Drain coolant.
Set container under the vehicle, and remove drain cock
from radiator.
G2M0263
6) Remove cooling system.
(1) Disconnect radiator fan motor connector.
(2) Disconnect radiator outlet hose from thermostat
cover.
9
2-11SERVICE PROCEDURE
2. Engine

B2M0016A
(3) Disconnect ATF cooler hoses from pipes. (AT
model)
B2M0017
(4) Remove V-belt cover.
G2M0267
(5) Disconnect radiator inlet hose from radiator.
G2M0220
(6) Remove radiator upper bracket, and remove radia-
tor assembly from vehicle.
7) Collect refrigerant, and remove pressure hoses. (With
A/C)
(1) Place and connect the attachment hose to the
refrigerant recycle system.
(2) Collect refrigerant from A/C system.
10
2-11SERVICE PROCEDURE
2. Engine