clutch MITSUBISHI ECLIPSE 1991 Service Manual

AUTOMATIC TRANSAXLE - TroubleshootingRemedial Steps If Oil Pressure Is Not Normal
F4A22.,,‘
frouble symptomProbable causeRemedy1;
I. *Line pressures
a.Clogging of oil filtera.Visually inspect the oil filter; replace the oil filte
are all low (or high).
if it is clogged.
NOTEb.Improper adjustment of oil press-b.Measure line pressure @ (kickdown brake*“Line pressures”ure (line pressure) of regulator
pressure); if the pressure is not the standard
refers to oil
ress-ures@,@, 4 and
8
valvevalue, readjust the line pressure, or, if neces-sary, replace the valve body assembly.
@in the “Standardc.Sticking of regulator valvec.Check the operation of the regulator valve;oil pressure table”repair if necessary, or replace the valve body
on the previousassembly.
page.d.Looseness of valve body tighten-d.Tighten the valve body tightening bolt and
ing partinstallation bolt.‘- ,
e.Improper oil pump dischangee.Check the side clearance of the oil pump gehr;
pressurereplace the oil pump assembly if necessary.
I. Improper reducinga.Improper line pressurea.Check the @ kickdown brake pressure (line
pressurepressure); if the line pressure is not the
standard value, check as described in item 1
above.
b.Clogging of the filter (L-shapedb.Disassemble the valve body assembly and
type) of the reducing-pressure cir-check the filter; replace the filter if it is clogged.cuit
c.Improper adjustment of the re-c.Measure the @I reducing pressure; if it is not
ducing pressurethe standard value, readjust, or replace the
valve body assembly.
d.Sticking of the reducing valved.Check the operation of the reducing valve; if
necessary, repair it, or replace the valve body
assembly.
e.Looseness of valve body tighten-e.Tighten the valve body tightening bolt and
ing partinstallation bolt.
#. Improper kick-a.Malfunction of the D-ring or seala. Disassemble the kickdown servo and check
down brake press-ring of the sleeve or kickdownwhether the seal ring or D-ring is damaged.
ureservo piston.If it is cut or has scratches, replace the seal ring
or D-ring.
b.Looseness of valve body tighten-b.Tighten the valve body tightening bolt and
ing partinstallation bolt.
c.Functional malfunction of thec.Replace the valve body assembly.
valve body assembly
. Improper front
clutch pressure
a.Malfunction of the D-ring or seala. Disassemble the kickdown servo and check
ring of the sleeve or kickdownwhether the seal ring or-D-ring is damaged.servo piston.
If it is cut or has scratches, replace the seal ring
or D-ring.
b.Looseness of valve body tighten-b.Tighten the valve body tightening bolt and
ing partinstallation bolt.c.Functional malfunction of thec.Replace the valve body assembly.
valve body assembly
d.Wear of the front clutch piston ord.Disassemble the transaxle itself and check
retainer, or malfunction of the
@whether or not there is wear of the front clutch
D-ring, @ seal, ring.piston and retainer inner circumference, or
ra;;; to the figure on the nextdamage of the D-ring. If there is any wear or
damage, replace the piston, retainer, D-ring
and/or seal ring.
1. Improper endclutch pressure
a.Malfunction of a D-ring @or seala.Disassemble the end clutch and check the sealring 0, @of the end clutch or
O-ring @I of the pipe (Refer to thering, D-ring of the piston, seal ring of thefollowing figure.)retainer, etc.; replace if there are cuts, scars,
scratches or damage.
b.Looseness of valve body tighten-b.Tighten the valve body tightening bolt and
ing partinstallation bolt.c.Functional malfunction of thec.Replace the valve body assembly.
valve body assembly

21-198AUTOMATIC TRANSAXLE - Troubleshooting
Trouble symptom6. improper
low-
reverse brake
pressure
7. Improper torque
converter pressureProbable causea.O-ring between valve body and
transaxle damaged or missing
b.Looseness of valve body tighten-
ing part
c.Functional malfunction of the
valve body assembly
d.Malfunction of the O-ring 0 of thelow-reverse brake piston or the
O-ring
0 of the retainer (Refer tothe figure below.)
a.Sticking of the damper clutch
control solenoid valve (DCCSV) or
the damper clutch control valve.
b.Clogging or leaking of the oil
cooler and/or piping
2.Damaged seal ring @of the input
shaft (Refer to the figure below.)
3.Malfunction of the torque conver-
ter
Remedy
a.Remove the valve body assembly and check to
be sure that the O-ring at the upper surface of
the upper valve body is not
missinor dam-
aged; install or replace the O-ring i7necessary.
b.Tighten the valve body tightening bolt andinstallation bolt.
c.Replace the valve body assembly.
d.Disassemble the transaxle itself and check the
O-ring for damage; replace if there are cuts,
scars, scratches or damage.
a.Check the operation of the damper clutch
system and the DCCSV.
b.Repair or replace, as necessary, the cooler
and/or piping.
c.Disassemble the transaxle itself and check for
damage of the seal ring; replace the seal ring if
there is damage.
d.Replace the torque converter.
@D-ring@Seal ring
-OD-ring@Seal ring
(@Seal ring
@O-ring
1750437

AUTOMATIC TRANSAXLE - Troubleshooting
F4A33-W4A33Trouble symptom
1. Line pressures areall low (or high).
NOTE* “Line pressures”
refers to oil
pressure @,@I, 0,0, @I and 0, inthe “Standard oil
pressure table” on
the previous page.
2. Improper reducing
pressure3. Improper
kickdown brake
pressure (Apply)
4. Improper
kickdown brake
pressure (Release)
5. Improper front
clutch pressureProbable cause
a.Clogging of oil filter
b.Improper adjustment of oil
pressure (line pressure of
regulator valve
c.Functional malfunction of valve
body assembly
d.Looseness of valve bodytightening part
e.Improper oil pump dischange
pressure
a.Clogging of the filter (L-shaped
type) of the reducing-pressurecircuit
b.Improper adjustment of oil
pressure
c.Functional malfunction of thevalve body assembly
a.Malfunction of the seal ring @,
D-ring @I or seal ring 0 of thesleeve of the kickdown servo
piston.
b.Functional malfunction of the
valve body assembly
a.Malfunction of the seal ring @,
D-ring @ or seal ring a> of thesleeve of the kickdown servo
piston.
b.Functional malfunctio? of the
valve body assembly
a.Malfunction of the seal ring @,
D-ring @or seal ring Q3 of thesleeve of the kickdown servo
piston.
b.Functional malfunction of the
valve body assembly
c.Wear of the front clutch piston or
retainer, or malfunction of theD-ring 0 or seal ring @.
Remedy
a.Visually inspect the oil filter; replace the oil filter
if it is clogged.
b.Measure line pressure @ (kickdown brake
pressure); if the pressure is not the standard
value, readjust the line pressure, or, if
necessary, replace the valve body assembly.
c.Replace the valve body assembly.
d.Tighten the valve body tightening bolt and
installation bolt.
e.Check the side clearance of the oil pump gear;
replace the oil pump assembly if necessary.
a.Disassemble the valve body assembly and
check the filter; replace the filter if it is clogged.
b.Measure the @ reducing pressure; if it is notthe standard value, readjust, or replace the
valve body assembly.
2.Replace the valve body assembly.
a.Disassemble the kickdown servo and check
whether the seal ring or D-ring is damaged.
If it is cut or has scratches, replace the seal ring
or D-ring.
3.Replace the valve body assembly.
3.Disassemble the kickdown servo and check
whether the seal ring or D-ring is damaged.
If it is cut or has scratches, replace the seal ring
or D-ring.
3.Replace the valve body assembly.
3.Disassemble the kickdown servo and checkwhether the seal ring or D-ring is damaged.
If it is cut or has scratches, replace the seal ring
or D-ring.
I.
Replace the valve body assembly.
:.Disassemble the transaxle itself and checkwhether or not there is wear of the front clutch
piston and retainer inner circumference, or
damage of the D-ring and/or seal ring. If there is
any wear or damage, replace the piston,
retainer, D-ring and/or seal ring.

21-200AUTOMATIC TRANSAXLE - Troubleshooting
Trouble symptom
6. Improper rear
clutch pressure*,Probable causeRemedy
a.Malfunction of D-ring @of reara.Disassemble the rear clutch, check input shaft
clutch piston, retainer seal ring
@$I
and seal rings @and 0 of inputseal ring, retainer seal ring, piston
D ring, etc.
and replace broken or damaged parts.
shaft.
b.Functional malfunction of theb.Replace the valve body assembly.
valve body assembly7. Improper end
clutch pressure
a.Malfunction of seal ring @or thea.Disassemble the end clutch and check the oil
D-ring
@I and/or oil seal 0 of endseal or D-ring of the piston, seal ring of the
clutch.retainer, etc.; replace if there are cuts, scars,
scratches or damage.
b.Functional malfunction of theb.Replace the valve body assembly.
valve body assembly8. Improper
low-a.O-ring between valve body anda.Remove the valve body assembly and check to
reverse braketransaxle damaged or missingbe sure that the O-ring at the upper surface of
pressurethe upper valve body is not
missin7or dam-
aged; install or replace the O-ring inecessary.
b.Functional malfunction of theb.Replace the valve body assembly.
valve body assembly
c.Malfunction of the D-ring @of thec.Disassemble the transaxle itself and check the
low-reverse brake piston or theD-ring and O-ring for damage; replace if there
O-ring
@I of the retainerare cuts, scars, scratches or damage.9. Improper torque
a.Clogging or leaking of the oila.Repair or replace, as necessary, the coolerconverter pressure
cooler and/or pipingand/or piping.b.Malfunction of the torque conver-b.Replace the torque converter.ter

AUTOMATIC TRANSAXLE - Troubleshooting
BSeal
EiISealringring
OSeal ring
I
‘,:,l.
f:
eal ring
IRear c/utch@D-ringI
IFront clutch
Low-reverse brake
iFAq36 1@Seal ring
/OSeal ring
-ringservo piston
TFA0362

21-202AUTOMATIC TRANSAXLE - Troubleshooting
CONVERTER STALL TESTStall test consist of determining maximum engine
speed obtained at full throttle in “D” and “R”
positions. This test checks torque converter stator
overrunning clutch operation, and holding ability of
transaxle clutches and low-reserve brake.
CautionDuring this test, make sure that no one stand in
front of or behind vehicle.
1. Check transaxle fluid level. Fluid should be at
normal operating temperature
[70-80°C (160-
18O”F)]. Engine coolant should also be at normaloperating temperature
[80-90°C (180- 19O”F)l.2. Apply chocks to both rear wheels.
3. Attach engine tachometer.
4. Apply parking and service brakes fully.
5. Start engine.
6. With selector lever in “D” position, depress
accelerator pedal fully to read engine maximum
rpm. Do not hold throttle wide open any longer
than is necessary to obtain maximum engine
rpm reading, and never longer than 5 seconds ata time. If more than one stall test is required,
operate engine at approximatey 1,000 rpm in
neutral for 2 minutes to cool transaxle fluid
between tests.
Stall speed:
1,800-3,200 rpm
TRANSAXLE CONTROL7. Place selector lever to “R” position and perform
?+stall test by the same procedure as in foregoing
-,
item.Stall Speed Above Specification in “D”
If stall speed is higher than specification, rear clutchor overrunning clutch of transaxle is slipping. In this
case, perform hydraulic test to locate cause of
slippage.Stall Speed Above Specifjcation in “R”
If stall speed is higher than specification, front
clutch of transaxle or low-reverse brake is slipping.
In this case, perform hydraulic test to locate cause
of slippage.
Stall Speed Below Specification in “D” and “R”
If stall speed is lower than specification, insufficient
engine output or faulty torque converter is sus-
pected. Check for engine misfiring, ignition timing,
valve clearance etc. If these are good, torque
converter is faulty.
Symptom
Selector lever operation isstiff
Probable causeIncorrect adjustment of sleeve
Incorrect adjustment of control cable
Excessive wear of detent plate
Worn contact surfaces of pushbutton and sleeveRemedyAdjust
Replace
Starter motor does notoperate with the selector
lever in the “N” or
“P”position
Will not shift to
4-speedMalfunction in inhibitor switch
Malfunction of starter relay
Incorrect adjustment of control cableMalfunction of OD switch
Replace
Adjust
Replace

AUTOMATIC TRANSAXLE - service Adjustment Procedures21-209
09Pooi awith this range.
09POOll
TWO382
SERVICE ADJUSTMENT PROCEDURESN21FB6E
TRANSAXLE FLUID LEVEL INSPECTION1. Drive until the fluid temperature reaches the usual tem-
perature
[70-80°C (160- 18O”F)I.2. Place vehicle on level floor.
3. Move selector lever sequentially to every position to fill
torque converter and hydraulic circuit with fluid, then place
lever in “N” Neutral position.
4. Before removing dipstick, wipe all dirt from area around
dipstick. Then take out the dipstick and check the conditionof the fluid.
The transaxle should be overhauled under the following
conditions.l If there is a “burning” odor.
l If the fluid color has become noticeably blacker.
lIf there is a noticeably great amount of metal particles inthe fluid.
5.Check to see if fluid level is in “HOT” range on dipstick. If
fluid level is low, add automatic transaxle fluid until level
reaches “HOT” range.
Transaxle fluid: MOPAR ATF PLUS (Automatic trans-
mission fluid type 7176) or Dia ATF SPor equivalent
Low fluid level can cause a variety of conditions
becaljse it
allows pump to take in air along with fluid. Air trapped in
hydraulic circuit forms bubbles which make fluid spongy.
Therefore, pressures will be erratic, causing delayed shift,
slippy clutch and brakes, etc.
Improper filling can also raise fluid level too high. When
transaxle has too much fluid, gears churn up foam and
cause the same conditions which occur with low fluid level,
resulting in accelerated deterioration of automatic transaxle
fluid.In either case, air bubbles can cause overheating, fluid
oxidation, which can interfere with normal valve, clutch,
and servo operation.Foaming can also result in fluid
escaping from transaxle vent where it may be mistaken for
a leak.6. Be sure to examine fluid on dipstick closely.
TRANSAXLE FLUID REPLACEMENTN21FCBAaRefer to GROUP O-Maintenance Service.
TRANSFER OIL LEVEL INSPECTIONNZlFXAATransfer oil level inspection is the same as for the manual
transaxle transfer.
Refer to GROUP
22-Service Adjustment Procedures.
TRANSFER OIL REPLACEMENTNZlFYAFaTransfer oil replacement is the same as for manual transaxle
transfer.Refer to GROUP
22-Service Adjustment Procedures.

21-228AUTOMATIC TRANSAXLE - Transaxle Assembly <F4A22>
DISASSEMBLY AND REASSEMBLY <F4A22>NZlLEBB
\18
1720
\231. Torque converter
2. Converter housing
3. Gasket
4. Oil
pump5. O-ring
6. Gasket
7. Thrust washer
#l
8.Front clutch assembly9. Thrust race #3
10. Thrust bearing #411.Thrust washer #212.Rear clutch assembly13.Spacer14.Differential
15.Thrust bearing #616.Clutch hub
17. Thrust race #7
18. Thrust bearing #819.Kickdown band20.Kickdown drum21.Snap ring
22.Center support23.O-ring
24.Wave spring25.Return spring26.Pressure plate27.Brake disc
28.Brake plate29.Reaction plate
30. Reverse sun gear31. Thrust bearing #932.Thrust race # 10
33. Forward sun gear
34.Planetary carrier35.Thrust bearing #12

AUTOMATIC TRANSAXLE - Transaxle Assembly <F4A22>B-229
36. Pulse generator37. Spring washer
38. Control lever
39. Clamp40. Inhibitor switch
ln ~19 Nm
bs.17-21Nm6-8
Nm5-6ft.lbs.
-I
45
6IO-12 Nm
,----IT7.3-8.6
ftlbs.-3980-
46AR-M N~JTV -- .-.35-43 ft.iIbs.
b??io r 20-35 Nm\h\\iii-26 ft.lbs.
-,i7 ._.. .__ ._..v.-6756,,,-e30 Nmldr;-11% f-klhs.
I
,
747%!%t.lbs.3<-69
glo-12 Nm73. Drain plu!
74.O-ringv7.3-8.6 ftJbS- 75. Setscrev-^^V/8. u-nng
77. Detent ball
TFA050520-27 Nm
30-35' Nm60.Kickdown servo piston78.Detent seat15-16 ft.lbs- 22-26 ftlbs.61.Spring79.Detent spring
41. Oil temperature sensor I62. Anchor rod80. Sprag rod support42.End clutch cover51. Snap ring63.Output flange81.Parking sprag rod43.O-ring52. Lock plate64.Transfer shaft82.Control shaft44.Bearing53. Idler gear shaft65.Outer race83.D-ring
45.
End clutch54. Bearing inner race66.Gasket84.Transfer shaft cover
46.Thrust washer55. Idler gear68.Valve body assembly85.Lock nut47.End clutch hub56. Bearing inner race69.Clamp86.Driven gear48.Thrust bearing #1357. Spacer70.Gasket87.Outer race49.End clutch shaft58. Snap ring71.Oil pan88.Spacer50.Bearing retainer59. Kickdown servo switch72.Gasket89.Transaxle case

-2.rt-2-30~~ AUTOMATIC TRANSAXLE - Transaxle Assembly <F4A22>
;haft1770083
DISASSEMBLYNZlLEAl1. Clean away any sand, mud, etc. adhered around the
.+
transaxle..
2.
Place the transaxle assembly on the workbench with the oil--’
pan down.
3. Remove the torque converter.
4. Measuring input shaft end play before disassembly will
usually indicate when a thrust washer change is required
(except when major parts are replaced). Thrust washers arelocated between reaction shaft support and rear clutch
retainer, and between reaction shaft support and front
clutch retainer.
Mount a dial indicator to converter housing with the Dial
Indicator Support. Make sure that the indicator plunger is
seated against end of input shaft.
When checking end play, pull out or push in the input shaft
with pliers. Be careful not to scratch the input shaft. Record
indicator reading for reference when reassembling transax-
le.5. Remove the pulse generator “A” and “B”
6. Remove manual control lever, then remove inhibitor
switch.
7. Remove snap ring then remove
kickdown servo switch.