1995 SUBARU LEGACY parking brake

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.
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2-10DIAGNOSTICS
1. Clutch System

3. Performance Test
A: STALL TEST
1. GENERAL
The stall test is of extreme importance in diagnosing the
condition of the automatic transmission and the engine. It
should be conducted to measure the engine stall speeds in
all shift ranges except the P and N ranges.
Purposes of the stall test:
1) To check the operation of the automatic transmission
clutch.
2) To check the operation of the torque converter clutch.
3) To check engine performance.
2. TEST METHODS
Preparations before test:


1Check that throttle valve opens fully.


2Check that engine oil level is correct.


3Check that coolant level is correct.


4Check that ATF level is correct.


5Check that differential gear oil level is correct.


6Increase ATF temperature to 60 to 80°C (140 to 176°F)
by idling the engine for approximately 30 minutes (with
select lever set to“N”or“P”).
1) Install an engine tachometer at a location visible from
the driver’s compartment and mark the stall speed range
on the tachometer scale.
2) Place the wheel chocks at the front and rear of all
wheels and engage the parking brake.
3) Move the manual linkage to ensure it operates properly,
and shift the select lever to the 2 range.
B3M0286B
4) While forcibly depressing the foot brake pedal, gradu-
ally depress the accelerator pedal until the engine operates
at full throttle.
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3-2SERVICE PROCEDURE
3. Performance Test

B: TIME LAG TEST
1. GENERAL
If the shift lever is shifted while the engine is idling, there
will be a certain time elapse or lag before the shock can be
felt. This is used for checking the condition of the forward
clutch, reverse clutch, low & reverse brake, forward one-
way clutch and low one-way clutch.
CAUTION:
Perform the test at normal operation fluid tempera-
ture 60 to 80°C (140 to 176°F).
Be sure to allow a one minute interval between tests.
Make three measurements and take the average
value.
2. TEST METHODS
1) Fully apply the parking brake.
2) Start the engine.
Check idling speed (A/C OFF).
“N”range: 800±100 rpm
3) Shift the shift lever from“N”to“D”range.
Using a stop watch, measure the time it takes from shift-
ing the lever until the shock is felt.
Time lag: Less than 1.2 seconds
4) In same manner, measure the time lag for“N”,“R”.
Time lag: Less than 1.5 seconds
3. EVALUATION
1) If“N”,“D”time lag is longer than specified:
Line pressure too low
Forward clutch worn
Low one-way clutch not operating properly
2) If“N”,“R”time lag is longer than specified:
Line pressure too low
Reverse clutch worn
Low & reverse brake worn
Forward one-way clutch not operating properly
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3-2SERVICE PROCEDURE
3. Performance Test

C: LINE PRESSURE TEST
1. GENERAL
If the clutch or the brake band shows a sign of slippage or
shifting sensation is not correct, the line pressure should be
checked.
Excessive shocks during upshifting or shifting takes
place at a higher point than under normal circumstances,
may be due to the line pressure being too high.
Slippage or inability to operate the vehicle may, in most
cases, be due to loss of oil pressure for the operation of
the clutch, brake band or control valve.
G3M0869
1) Line pressure measurement (under no load)
CAUTION:
Before measuring line pressure, jack-up front
wheels (front-wheel-drive model) or all wheels (4-wheel
drive model).
Maintain temperature of ATF at approximately 50°C
(122°F) during measurement.
(ATF will reach the above temperature after idling the
engine for approximately 30 minutes with select lever
in“N”or“P”.)
G3M0869
2) Line pressure measurement (under heavy load)
CAUTION:
Before measuring line pressure, apply both foot and
parking brakes with all wheels chocked (Same as for
“stall”test conditions).
Measure line pressure when select lever is in“R”,
“2”with engine under stall conditions.
Measure line pressure within 5 seconds after shift-
ing the select lever to each position. (If line pressure
needs to be measured again, allow the engine to idle
and then stop. Wait for at least one minute before mea-
surement.)
Maintain the temperature of ATF at approximately
50°C (122°F) during measurement. (ATF will reach the
above temperature after idling the engine for approxi-
mately 30 minutes with the select lever in“N”or“P”.)
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3-2SERVICE PROCEDURE
3. Performance Test

1. Propeller Shaft
A: ON-CAR SERVICE
Check the following points with propeller shaft installed in
vehicle.
1) Joints and connections
Check for any looseness of yoke flange connecting bolts
and center bearing retaining bolts.
G3M0019
2) Splines and bearing locations
Turn propeller shaft by hand to see if abnormal free play
exists at splines. Also move yokes to see if abnormal free
play exists at spiders and bearings.
G3M0020
3) Runout of propeller shaft
Turn rear wheels by hand to check for“runout”of propel-
ler shaft.
Runout:
Limit 0.6 mm (0.024 in)
NOTE:
Measure runout with a dial gauge at the center of front and
rear propeller shaft tubes.
G3M0255
4) Center bearing free play
While holding propeller shaft near center bearing with your
hand, move it up and down, and left and right to check for
any abnormal bearing free play.
B: REMOVAL
NOTE:
Before removing propeller shaft, wrap metal parts with a
cloth or rubber material.
1) Disconnect ground cable from battery.
2) Move selector lever or gear shift lever to“N”.
3) Release the parking brake.
4) Jack-up vehicle and support it with sturdy racks.
5) Remove rear exhaust pipe and muffler.

9
3-4SERVICE PROCEDURE
1. Propeller Shaft

2. Rear Differential
A: ON-CAR SERVICE
1. FRONT OIL SEAL
1) Disconnect ground cable from battery.
2) Move selector lever or gear shift lever to“N”.
3) Release the parking brake.
B3M0316A
4) Remove oil drain plug, and drain gear oil.
G3M0024
5) Jack-up rear wheels and support the vehicle body with
sturdy racks.
6) Remove propeller shaft from body. [W1B0].>
CAUTION:
Wrap metal parts with a cloth or rubber material to
prevent damage from adjacent metal parts.
G3M0034
7) Remove self-locking nut while holding companion
flange with ST.
ST 498427200 FLANGE WRENCH
G3M0035
8) Extract companion flange with a puller.
14
3-4SERVICE PROCEDURE
2. Rear Differential

2. SIDE OIL SEAL
1) Disconnect ground cable from battery.
2) Move selector lever or gear shift lever to“N”.
3) Release the parking brake.
4) Loosen both wheel nuts.
5) Jack-up the vehicle and support it with rigid racks.
6) Remove wheels.
7) Remove rear exhaust pipe and muffler.

G3M0038
8) Remove the DOJ of rear drive shaft from rear differen-
tial.
(1) Remove the A.B.S. sensor cable clamp and park-
ing brake cable clamp from bracket.
G3M0039
(2) Remove the A.B.S. sensor cable clamp from the
trailing link.
G3M0040
(3) Remove the A.B.S. sensor cable clamp and park-
ing brake cable guide from the trailing link.
G3M0041
(4) Remove the rear stabilizer link.
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3-4SERVICE PROCEDURE
2. Rear Differential

B: REMOVAL
1) Disconnect ground cable from battery.
2) Move selector lever or gear shift lever to“N”.
3) Release the parking brake.
4) Loosen wheel nuts.
5) Jack-up vehicle and support it with sturdy racks.
6) Remove wheels.
7) Remove rear exhaust pipe and muffler.

G3M0021
8) Remove front exhaust cover.
G3M0022
9) Remove front cover of rear differential mount.
G3M0024
10) Remove propeller shaft.
CAUTION:
When removing propeller shaft, pay attention not to
damage the sliding surfaces of rear drive shaft (exten-
sion) spline, oil seal and sleeve yoke.
NOTE:
Prepare an oil can and cap since the transmission oil flows
out from the extension at removing propeller shaft.
G3M0026
NOTE:
Insert the cap into the extension to prevent transmission oil
from flowing out immediately after removing the propeller
shaft.
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3-4SERVICE PROCEDURE
2. Rear Differential