1990 MITSUBISHI SPYDER brake

AUTOMATIC TRANSAXLE
ENGINE (TURBO) AND ENGINE> On-vehicle
8. Torque
pressure
brakepressure
Reducingpressure
Low-reverse
4. Front clutchpressure
‘5. clutch8. Torque converter
pressurepressureI
brake
6. End clutch
23199999949
1.
2.
3.
4.
5.
6.
7.
Completely warm up the transaxle.
Raise the vehicle by using a jack so that the
can be rotated.
Connect an engine tachometer
place it a position
it’s easy to see.
Attach the special oil-pressure gauge
and the adapter to oil-pres-
sure outlet port.
When the reverse position pressure. is
be
3,000 (435 psi) type of gauge should used.
Measure each hydraulic
under the conditions
in the standard hydraulic
and check that
they are at the standard values.
the tool to actuator, and
the brake (Apply) when the
control solenoid (PCSV) 50
NOTE
1. Vehicle speed: 0 km/h (0 mph)
2. Selector lever switch position: “D”
3. Accelerator condition: Fully closed.
If all of the above conditions
the actuator for 5 seconds to bring the PCSV to
duty.
If the pressure is outside the standard value, repa ir accord-
ing to the hydraulic pressure diagnosis chart.
.
.
,
pressure
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TRANSAXLE
ENGINE AND ENGINE> On-vehicle Service
Standard Hydraulic Pressure
No. SelectleverpositionEngine
speed
Shift1Reducing
pressure Standard oil pressure
(psi)
24678Front
End clutchTorque
brake clutch pressurereverseconverterpressurepressure brakepressurepressure
1Idling Neutral.
2Idling gearl
(usingscan tool)
3Approx.gear2,500(64-92)
4Approx.gear 9002,500I(64-92)I
5 2Approx.gear2,500II(64-92)
6Approx.1 st gear.
1,000( 4 3 - 6 4 )
7Approx.2,500
2,240 2,240(233-319)Reverse(233-319).Approx.1,000 1,000(64-92)
1,000(145) or(145) or
more more
Standard oil pressure
NOTE must be (1.5 psi) or less.
SW-ON: Switch ON the overdrive control
SW-OFF: Switch OFF the overdrive control switch Hydraulic pressure is generated, but not the stand ard value.
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AUTOMATIC TRANSAXLE ENGINE AND ENGINE> On-vehicle Service
Hydraulic Pressure Test Diagnosis
Case
1
Description
Nos. 2 , 3
, 5 , 6 and 7 hydraulic pressures (line pressure) are all
Reference page
2No. 1 hydraulic pressure (reducing pressure) is abn ormal.
3
4
5
No. 2 hydraulic pressure (kickdown brake apply pres sure) is abnormal.
No. 3 hydraulic pressure (kickdown brake release pressure)
and No. 4 hydraulic pressure (front clutch abnormal
No. 5 hydraulic pressure (rear clutch pressure) is abnormal
. .
No. 6 hydraulic pressure (end clutch pressure) is a bnormal
No. 7 hydraulic pressure (low-reverse brake pressur e) is abnormal
No. 8 hydraulic pressure (torque converter pressure) is
Hydraulic pressure appears in places where standard hydraulic pressure is
10 (1.5 psi) or less. .
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AUTOMATIC TRANSAXLE
ENGINE (TURBO) AND ENGINE> On-vehicle
Seal ring D-ringI Seal ring
I
Seal.ring
D-ring
b r a k e
,
O-ring
Seal ring
0 ringIRear clutch D-ring clutch
A Seal ring
D-ring
brake
O-ring
Revision

AUTOMATIC TRANSAXLE
ENGINE (TURBO) AND ENGINE> Service
ringI
D-ring
Seal
O-ring
Oil seal
D-ring
0 Seal ring
RearLow-reverseI
Front clutch D-ring
A Seal ring
D-ring
brake
O-ring
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AUTOMATIC TRANSAXLE
ENGINE (TURBO) AND ENGINE> On-vehicle Service
CASE 1 No. 2 and 7 hydraulic pressures (line pressure) are all abnormal.
Refer to Automatic Transaxle Overhaul
Measure No. and 7 hydraulic sure (line pressure)Check the oil filter (blockage, damage)Replace
All are high
the adjusting screw to adjust so that No.
2 hydraulic pressure (kickdown brake apply
pressure) is 880
(127.7 psi)Hydraulic
38 psi)pressureAmount of change doesn’t
in hydraulic
sure for 1 screw turn
Hydraulic pressurechanged
Retest
Overhaul the valve (Regulator valve sticking, line relief ball contactsurface, regulator spring)
CASE 2 No. 1 hydraulic pressure (reducing pressure) is abnormal.
Refer to Automatic Overhaul
No
Areother hydraulic pressures (No. 2, 3, 4, 5,CASE1
6, 7hydraulic pressures) other than No.2 hy-
draulic pressure in No. 2 condition and No. 5hydraulic pressure in No. 6 condition normal?
Check that No. 1 hydraulic pressure (reducingTurn the adjusting screw to adjust so that
NO.1 hydraulic pressure (reducing pressure) is 425
Overhaul the valve body.* Retest
(Blockage in L-shaped filter on lower side of
intermediate plate, reducing valve sticking re-
ducing spring)
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AUTOMATIC: TRANSAXLE
ENGINE AND On-vehicle Service
CASE 3 No. 2 hydraulic pressure (kickdown brake pressure) is abnormal. .
Refer to Automatic Transaxle Overhaul
NoAreotherhydraulic pressures(No.3, 4,5,6,CASE17 pressures) normal?
No. 2 hydraulic pressure abnormal only during
conditions and No. 3 and No. 4 hydraulic
No. hydraulic pressure (low-reverse brake
pressure) in No. 6 condition is normal?
Check the Usethe scan tool to check the
PCSV control operation
sound, and check No. 2 hy-
draulic pressure also.
NG
OK Overhaul the valve (Pressurecontrolvalve, pressurecontrolspring, shift valve)
I
Check the PCSV part.
(Refer to
,down servo spring ring
NG
Replace the PCSV
CASE 4 No. 3 hydraulic pressure (kickdown brake rel ease pressure)
No. 4 hydraulic pressure (front clutch pressure) is abnormal.
Refer to Transaxle Overhaul
N oAre other hydraulic pressures (No. 2, 5, 6, 7 CASE 1
hydraulic pressures) normal?
air from hole 2 and check that the air pressure
and the front clutch (2 rings).*
Replace the reaction support rings , Retest
Revision

AUTOMATIC TRANSAXLE
ENGINE (TURBO) AND ENGINE> On-vehicle
CASE 5 No. 5 hydraulic pressure (rear clutch pressure) is abnormal.
Refer to Automatic Transaxle Overhaul
Are other hydraulic pressures (No. 2, 3, 4, 6,
7 hydraulic pressures) normal?
(Rear clutch exhaust valve N-D control valve)
Replace the rings
(2 rings), the rear clutchretainer rings and the input shaft and
CASE 6 No. 6 hydraulic pressure (end clutch pressur e) is abnormal.
Refer to Automatic Transaxle Overhaul
Are other hydraulic pressures (No. 2, 3, 5, 7
hydraulic pressures) normal?
clutch retainer rina
and clutch cover rina
CASE 7 No. 7 hydraulic pressure (low-reverse brake pressure) is abnormal.
Refer to Automatic Transaxle Overhaul
Are
other hydraulic pressures(No. 2.3,4.5,CASE16 hydraulic pressures) normal?
Yes
Yes
No. 7 hydraulic pressure abnormal only during CASE 3
No. 6 condition.
No
No. 7 condition
Remove the valve body and replace the O-ring
on the top of upper valve body. After that, blow
Replace the center support ring
(2 rings) andlow-reverse brake piston rings (2 Retest
R e v i s i o n