check oil MITSUBISHI 3000GT 1991 Workshop Manual

INTAKE AND EXHAUST - Service Adiustment Procedures
SUPERCHARGING PRESSURE RELIEF SOLENOID
VALVE INSPECTION (Turbo)
OPERATION INSPECTION
(1) Connect a hand vacuum pump to the solenoid valve nipple@ (see the illustration to the left).
(2) Using a jumper wire, connect between the solenoid valve
terminal and battery terminal.
(3) Connecting and disconnecting the jumper wire at the
battery negative terminal to apply a negative pressure,
check tightness.
Jumper wire
@I nippleNormal conditioncondition
Connected
Disconnected
OpenNegative pressure leaks.
CloseNegative pressure is held.
OpenNegative pressure is held.
COIL RESISTANCE INSPECTIONMeasure resistance between solenoid valve terminals
Standard value: 36
- 44 0 [at 20°C (68”F)I
AIR BYPASS VALVE INSPECTION (Turbo)MlSGHAB
(1) Remove the air bypass valve.
(2) Connect the hand vacuum pump to the nipple of the air
bypass valve.
(3) Apply a negative pressure of approx. 400 mmHg (16
in.Hg),and check operation of the valve. Also check that air
tightness is maintained.
Negative pressure
About 400
mmHg (16 in.Hg)
Valve operation
It starts opening
INTAKE MANIFOLD VACUUM INSPECTIONM’ISGCACRefer to GROUP 11
‘- Service Adjustment Procedures.
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15-12INTAKE AND EXHAUST - lntercooier
SERVICE POINT OF REMOVALMlSTSAC
13. REMOVAL OF ENGINE OIL COOLERIDisconnect the hose from the engine oil cooler and remove
the engine oil cooler only.
IL)
INSPECTIONMISTCAB
lCheck the intercooler fins for bending, damage, or foreign
matter.
lCheck the intercooler hoses for cracking, damage, or wear.
Air Intake hose B
Air hose
05FOO21
SERVICE POINTS OF INSTALLATIONMlSTDAC
21. INSTALLATION OF AIR INTAKE HOSE C
/ 20. AIR
INTAKE HOSE B
/ 19. AIR INTAKE HOSE A
Engaging the notch with the
n mark at points indicated by
the arrows, insert air intake hoses B and C until seated.
Insert the turbocharger end of air intake hoses B and C
completely.
15. INSTALLATION OF INTERCOOLER LEFT / 12. AIR HOSEF
/ 9. AIR HOSE E / 8. AIR HOSE B / 5. AIR HOSE G
Aligning the marks at the points indicated by the arrows,
insert securely into the stepped portion of the pipe or until
seated.
CautionBe careful not to allow any foreign matter to get into
the hoses, pipes, or the intercooler itself.
4.INSTALLATION OF INTERCOOLER RIGHT / 2. AIR HOSED
/ 1. AIR HOSE C
Aligning the marks at the points indicated by arrows, insert
securely into the stepped portion of the pipe.
CautionBe careful not to allow any foreign matter to get into
the hoses, pipes, or the intercooler itself.
1 ~
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INTAKE AND EXHAUST - Intake Manifold.15-1705LOO84
ProtrusionFRONT
ProtrusionA\
\ProtrusionProtrusidnOIL0857
FRONT
Intake mamfold7lN0090
APPLY~~ lubricant
INSPECTIONMlIMCATZCheck the following points; replace the part if a problem is
found.
INTAKE MANIFOLD(1) Check for damage or cracking of any part.
(2) Clogging of the negative pressure (vacuum) outlet port, or
clogging of the gas passages.
(3) Check deflection of installation surface with straight edge
and thickness gauge.
Standard value
: 0.15 mm (.0059 in.) or less
Limit
: 0.2 mm (.008 in.)
SERVICE POINTS OF INSTALLATIONMISMDAH
13. INSTALLATION OF INTAKE MANIFOLD GASKETInstall with gasket protrusions in the position illustrated.
10. INSTALLATION OF INTAKE MANIFOLD MOUNTING
NUT
Tighten the intake manifold mounting nuts one bank after
the other by the following ‘procedure.
(1) Tighten the nuts in the front bank to 3 to 5 Nm (2.2 to
3.6 ft.lbs.).
(2) Tighten the nuts in the rear bank to 12 to 15 Nm (9 to 11ft.lbs.).
(3) Tighten the nuts in the front bank to 12 to 15 Nm (9 to
11 ft.lbs.).
(4) Repeat steps (2) and (3) one more time respectively.
9. INSTALLATION OF INTAKE MANIFOLD MOUNTING
NUT
Apply lubricant sparingly to the intake manifold mounting
nuts.
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INTAKE AND EXHAUST - Turbocharger (Front)15-19
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SERVICE POINTS OF REMOVALM15LBAE
19. REMOVAL OF OXYGEN SENSORDisconnect the connector of the oxygen sensor, and install
the special tool to the oxygen sensor.
25. DISCONNECTION OF AIR CONDITIONER COMPRES-
SORDisconnect air conditioner compressor with hoses from the
bracket.
NOTEThe removed air conditioner compressor should be fas-
tened (by using rope, etc.) in a position that will not interfere
with the removal/installation of the turbocharger assembly.
INSPECTION
TURBOCHARGER ASSEMBLY CHECKMlSLCADl
lVisually check the turbine wheel and the compressor wheel
for cracking or other damage.
l Check whether the turbine wheel and the compressor
wheel can be easily turned by hand.
l Check for oil leakage from the turbocharger assembly.
lCheck whether or not the waste gate valve remains open. If
any problem is found, replace the part after disassembly.
OIL PIPE AND OIL-RETURN PIPE CHECKCheck the oil pipe and oil-return pipe for clogging, bending, or
other damage.
If there is clogging, clean it.
SERVICE POINTS OF INSTALLATIONMllLDAE
24. INSTALLATION OF TURBOCHARGER ASSEMBLYClean the alignment surfaces shown in the illustration.
Supply clean engine oil through the oil pipe installation hole
of the turbocharger assembly.
CautionWhen cleaning, care must be taken so that a piece of
the gasket does not enter the oil passage hole.
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INTAKE AND EXHAUST - Turbocharger (Rear)
0
Comrxessorwheel \u ~i, rOlR0182
I05FOO19
SERVICE POINT OF REMOVALM15LBAF
10. REMOVAL OF OXYGEN SENSOR
Disconnect the connector of the oxygen sensor, and install
’the special tool to the oxygen sensor.
d,
INSPECTION
TURBOCHARGER ASSEMBLY CHECK
M15LCADZ
lVisually check the turbine wheel and the compressor wheel
for cracking or other damage.
l Check whether the turbine wheel and the compressor
wheel can be
easily.turned by hand.
l Check for oil leakage from the turbocharger assembly.
lCheck whether or not the waste gate valve remains open. If
any problem is found, replace the part after disassembly.
OIL PIPE AND OIL-RETURN PIPE CHECKCheck the oil pipe and oil-return pipe for clogging, bending, or
other damage.
If there is clogging, clean it.
SERVICE POINTS OF INSTALLATIONMlBLDAF
23. INSTALLATION OF TURBOCHARGER ASSEMBLYClean the alignment surfaces shown in the illustration.
CautionWhen cleaning, care must be taken so that a piece of
the gasket does not enter the oil passage hole.
14. INSTALLATION OF OIL PIPESupply clean engine oil through the oil pipe installation hole
of the turbocharger assembly.
10. INSTALLATION OF OXYGEN SENSORUse the special tool to install the oxygen sensor.
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INTAKE AND EXHAUST - Exhaust Manifold 15-27
EXHAUST MANIFOLD
iREMOVAL AND INSTALLATION
Pre-removal and Post-installation Operationl Removal and Installation of Front Exhaust Pipe
l Removal and Installation of Condenser Fan Motor
Assembly
(Refer to GROUP 14 - Radiator.)
12-15Nm
P9 - 11 ft.lbs.
45 Nm33 ft.lbs.\24Nm
17ft.lbs.1
Li2
l-
45 Nm33 ft.lbs.
MSNA-8Removal steps of exhaust manifold (front)
1. Drive belt (Alternator)(Refer to GROUP 11 -Service Adjustment procedures)
2. Alternator assembly
3. Oil level gauge guide
4. Heat protector
5. Exhaust manifold (front)
6. Gasket
60 Nm,43 ft.lbs.
33 ftlbs.1 05F00337
8Removal steps of exhaust manifold (rear)
7. Stud
8. Heat protector
9. EGR pipe
IO. Exhaust manifold (rear)11. Gasket
INSPECTIONhllSNCAU2
Check the following points; replace the part if a problem is
found.
l Check for damage of cracking of any part.
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I

17-2EMISSION CONTROL - Specifications / Troubleshooting
SPECIFICATIONS
GENERAL SPECIFICATIONSMl’ICA- -\
Items
Crankcase emission control systemSpecifications
Closed type with positive crankcase ventilationvalve
Evaporative emission control systemCanister storage type
Canister
Charcoal type
Purge control solenoid valve
ON/OFF solenoid valve
Exhaust emission control system
Exhaust gas recirculation system
EGR valveVacuum-activated diaphragm type
EGR temperature sensor Thermistor type
EGR control solenoid valve - Non Turbo, Turbo>Duty cycle solenoid valve
Catalytic converter
Monolith type
Location
Under floor
Turbocharger outlet (front bank and rear bank,)
and under floor
SERVICE SPECIFICATIONSMl7CB-.
ItemsSpecifications
Purge control solenoid valve coil resistance
036 - 44 [at 20°C (68”F)I\
EGR temperature sensor resistancekfl60 - 83 [at 50°C (I 22”F)]
11 - 14 [at 100°C (212”F)l
EGR control solenoid valve coil resistance1236 - 44 [at 20°C (68”F)lI
TROUBLESHOOTING
Symptom
Engine will not start
or hard to start
Rough idle or engine
stalls
Probable cause
Vacuum hose disconnected or damaged
The EGR valve is not closed
Malfunction of the purge control solenoid valve
The EGR valve is not closed
Vacuum hose disconnected or damaged
Malfunction of the positive crankcase ventilationvalveRemedy
Repair or replace
Repair or replace
Repair or replace
Repair or replace
Repair or replace
Replace
Malfunction of the purge control systemCheck the system; if there is a
problem, check its component parts
Engine hesitates or3oor acceleration
Zxcessive oil:onsumptron
Malfunction of the exhaust gas recirculation
system
Positive crankcase ventilation line cloggedCheck the system; if there is a
problem, check its component parts
Check positive crankcase
ventila-tion system
Ioor fuel mileageMalfunction of the exhaust gas recirculation
systemTSB RevisionCheck the system; if there is a
problem, check its component parts
d

CLUTCH - Clutch Cover and Disc21-21
Sleeve
Bearing
TFM0131
INSPECTIONMZlGCAG
CLUTCH COVER ASSEMBLYl Check the diaphragm spring end for wear and uneven
height.
lReplace if wear is evident or height difference exceeds the
limit.
Limit
: 0.5 mm (02 in.)
lCheck the pressure plate surface for wear, cracks and color
change.
lCheck the strap plate rivets for looseness and replace the
clutch cover assembly if loose.
CLUTCH DISC
lCheck the facing for loose rivets, uneven contact, deteriora-
tion due to seizure, adhesion of oil or grease and replace the
clutch disc if defective.
lMeasure the rivet sink and replace the clutch disc if it is out
of specification.
Limit
: 0.3 mm (.012 in.)
lCheck for torsion spring play and damage and if defective,
replace the clutch disc.
l Combine the clutch disc with the input shaft and check
sliding condition and check for play in the rotating direction.
If it does not slide smoothly, check after cleaning and
reassembling. If the play is excessive, replace the clutch
disc and/or the input shaft.
CLUTCH RELEASE BEARING
Caution
1.The release bearing is packed with grease, so don’t usecleaning oil, etc. to clean it.
2.Do not disassemble the bearing and sleeve of the clutch
release bearing. If disassembled, replace. (AWD only)l Check for bearing heat damage, other damage, abnormal
noise and/or improper rotation. Also check whether or not
there is wear at the point of contact with the diaphragm
spring.
lIf there is abnormal wear at the point of contact with the
release fork, replace the bearing.
RELEASE FORKIf there is abnormal wear at the point of contact with the
bearing, replace the release fork.
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MANUAL TRANSAXLE - Transaxle Assembly22-15
idPost-installation Operationl Installation of Front Under Cover(Referto GROUP 51 -Front Bumper.)l Supplying of Transmission Oil (Refer to P.22-9.)l Filling of Engine Coolant (Refer to GROUP 14-
Service Adjustment Procedures.)70 Nm
l Checking Operation of Shift Lever at Each Positionl Checking the Operation of the Meters and Gauges26
ft.lbs.09FOO84
4*9. Connection for transaxle mount16. Starter10. Transaxle mount bracket4*17. Drive shaft (Left side),
l * 11. Mounting stopperinner shaft assembly12. Transaxle assembly upper part+* ** 18. Drive shaft (Right side)
coupling bolt19. Transaxle stay (Front bank side)4*13. Connection for tie rod end20. Transaxle stay (Rear bank side)4*14. Connection for lower arm4*21. Transaxle assembly lower part
ball jointcoupling bolt15. Right member4*22. Transaxle assembly
SERVICE POINTS OF REMOVALMZZMBBA6. DISCONNECTION OF THE CLUTCH TUBE BRACKET
AND CLUTCH DAMPER ASSEMBLY
Remove the clutch release cylinder and clutch oil line
bracket installation bolt, and then secure at the body side
without disconnecting the oil line coupling.
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MANUAL TRANSAXLE - Transaxle Assembly22-23
50. REMOVAL OF SHIFT RAIL ASSEMBLY
(I 1 Shift the Ist-2nd speed shift fork to the 2nd speed.
(2) Shift the 3rd-4th speed shift fork to the 4th speed.
MD998325-01
II
MD998325-01
/I\I2010291(3) Remove the shift rail assembly.
INSPECTIONM22MOAB
BACKUP LIGHT SWITCHOperate the backup light switch to check continuity with a
circuit tester.If without continuity, replace the switch.
SERVICE POINTS OF REASSEMBLYMZZMGAX
54. INSTALLATION OF OIL SEALInstall the drive shaft oil seal using the special tool.
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