1991 MITSUBISHI 3000GT Service Manual

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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15-28INTAKE AND EXHAUST - Exhaust Manifold
EXHAUST MANIFOLD
REMOVAL AND INSTALLATION
MlINA-C
12-15Nm9 - 11 ft.lbs.
Pre-removal and Post-installation Operationl Removal and Installation of Turbocharger Assembly(Refer to P.15-18, 21.)Removal steps of exhaust manifold (front)
I. Heat protector** 2. Exhaust manifold (front)** 3. Exhaust manifold stay4. GasketRemoval steps of exhaust manifold (rear)
5. Heat protector*+ 6. Exhaust manifold (rear)7. Gasket05FOO25
v
Cone disc spring
7lNOll5TSB Revision
INSPECTIONMl5NCAU3
Check the following points; replace the part if a problem is
found.
l Check for damage of cracking of any part.
SERVICE POINTS OF INSTALLATIONMlBNDAH
6. INSTALLATION OF EXHAUST MANIFOLD (REAR)
Tighten the nuts in the following order.
(1) Tighten five nuts @ to 30 Nm (22 ft.lbs.1.(2) Tighten nuts
@I to 47 - 53 Nm (34 - 38 ft.lbs.1.(3) Back off nuts @ until torque value of 10 Nm
(7 ft.lbs.1 is
achieved.
(4) Tighten nuts
@I to 29 - 31 Nm (21 - 22 ft.lbs.1.
NOTE
1.Fit the cone disc spring with the grooved side facing
the nut.
2. Install the nut, cone disc spring and washer in the
order shown in the illustration.
iJ
I
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INTAKE AND EXHAUST - Exhaust Manifold 15-29
Exhaust
manifold
stay
Exhaustmanifold
05FOO17
Cone disc spring71NOll;3. INSTALLATION OF EXHAUST MANIFOLD STAY
With the exhaust manifold stay resting on the exhaust
manifold, fit it along with the exhaust manifold over the
studs.
2.
INSTALLATION OF EXHAUST MANIFOLD (FRONT)
Tighten the nuts in the following order.
(1) Tighten four nuts @ to 30 Nm (22 ft.lbs.1.(2) Temporarily tighten the turbocharger to the exhaust
manifold.
(3) Tighten nut @ to 30 Nm (22
ft.lbs.1.(4) Tighten nuts @ and @ to 47
- 53 Nm (34 - 38 ft.lbs.).
(5) Back off nuts @ and @ until torque value of
10 Nm (7
ftlbs.) is achieved.
(6) Tighten nuts @ and @ to 29
- 31 Nm (21 - 22 ft.lbs.1.NOTE
1.Fit the cone disc spring with the grooved side,facing
the nut.
2. Install the nut, cone disc spring and washer in the
order shown in the illustration.
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15-30 INTAKE AND EXHAUST -Exhaust Pipe, Main Muffler and Catalytic Converter
EXHAUST PIPE, MAIN MUFFLER AND CATALYTIC CONVERTER
MlLRA-A
REMOVAL AND INSTALLATION
1. Main muffler and center exhaust50 Nm36
Fbs.
I\
yil / \2: h2yR ‘i”
3. Rubber hangers, ,4. Rubber nanger5. Main muffler6.Mouldings7.Hanger brackets8. Catalytic converter and center
exhaust pipe installation bolts
9.Hanger bracket10.Protector11.Rubber hangers12. Center exhaust pipe13.Gasket
---------179fl
/-r
9 ftlbs./----------------m _
I
!
14. Rubber hangers
15. Hanger bracket
16. Hanger brackets
17. Rear floor heat protector13 Nm
13 Nm
9 ftlbs.9 ft,lbs.5Nm
4 ft.lbs.
35hlm
25 ft.lbs.18. Catalytic converter and front
exhaust pipe installation bolts
19. Catalytic converter
20. Gasket
21. Oxygen sensor connection
22. Self-locking nuts9
ft.lbs.\/23.Rubberhanger24. Front exhaust pipe25.Gasket26.Hangerbracket27. Front floor heat protector
05FOO39
SERVICE POINTS OF REMOVAL
3.4. REMOVAL OF RUBBER HANGER / 5. MAIN MUFFLERSupport with a transmission jack, etc.
INSPECTIONMlSRCAM
l Check the mufflers and pipes for corrosion or damage.
l Check the rubber hangers for deterioration or damage.
l Check for gas leakage from mufflers and pipes.wision
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L.J

INTAKE AND EXHAUST -Exhaust Pipe, Main Muffler and Catalytic Converter 15-31
- EXHAUST PIPE, MAIN MUFFLER AND CATALYTIC CONVERTER
MlSRA-S
ii REMOVAL AND INSTALLATION31
/
L
LRemoval steps
36ft.lbs.
22013 Nm9 ft.lbs.----
em
/---------6_ 5ftJbs.13 Nm
9 ft.lbs.
1. Main muffler and center
exhaust pipe installation
bolts
2. Protector
l +3. Connection of cable assemblya*4. Rubber hangersa*5. Rubber hangersl *6. Main muffler
7. Gasket8. Mouldings
9. Hanger brackets10. Catalytic converter and center
exhaust pipe installation nuts
11. Hanger bracket
12. Rubber hangers13 Nm
9
ft.lbs.
13. Center exhaust pipe14.Gasket15.Rubber hangers
16.Hanger brackets17.Hanger bracket
18. Rear floor heat
protector
19. Catalytic converter and front
exhaust pipe installation bolts
20.Catalytic converter21.Gasket22.Self-locking nuts23.Rubber hanger
24. Front exhaust pipem
-.Ibs.
25.Gaskets
26.Self-locking nuts
27. Catalytic converter (Right)28.Gasket
29.Hanger bracket
+*l 4130.Oxygen sensor connection31. Heat protector D
32. EGR pipe connection
33.Gasket34. Catalytic converter (Left)
35. Heat protector E
36. Gasket
37. Front floor heat protectorTSB Revision

15-32 INTAKE AND EXHAUST -Exhaust Pipe, Main Muffler and Catalytic Converter
SERVICE POINTS OF REMOVALMlBRBAA
4. 5. REMOVAL OF RUBBER HANGER / 6. MAIN MUFFLERSupport with a transmission jack, etc.
:iJ ~
30. REMOVAL OF OXYGEN SENSORDisconnect the connector of the oxygen sensor, and install
the special tool to the oxygen sensor.
INSPECTIONMlSRCAN
l Check the mufflers and pipes for corrosion or damage.
l Check the rubber hangers for deterioration or damage.
l Check for gas leakage from mufflers and pipes.
lCheck if the main muffler active exhaust system valve can\\be moved smoothly by hand.
SERVICE POINTS OF-INSTALLATIONMllRDAl
30. INSTALLATION OF OXYGEN SENSORUse the special tool to install the oxygen sensor.
3. INSTALLATION OF CABLE ASSEMBLY
Install with the paint mark facing up and adjust the adjusting
nut to obtain the illustrated dimension.
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INTAKE AND EXHAUST - Active Exhaust System
ACTIVE EXHAUST SYSTEM
REMOVAL AND INSTALLATION
15-33
M15WA- -7Nm
5 ft.lbs.
Removal steps
I. Active exhaust system control unitI)+2. Connection of cable (Actuator side)3. Actuator
4. Protector
l +5. Connection of cable (Muffler side)
6. CablePre-removal and Post-installation
l Removal and Installation of Rear Side Trim (LH)(Refer to GROUP 52A-Trims.)
/DSFDO21
Adjusting nuts
05FOO2
SERVICE POINTS OF INSTALLATIONMISWDAA
5. INSTALLATION OF CABLE (Muffler Side)
Install with the paint mark facing up and adjust the adjusting
nut to obtain the illustrated dimension.
2. INSTALLATION OF CABLE (Actuator Side)
After adjusting the cable on the muffler side, adjust the
adjusting nuts for an inner cable play of 0 to 1 mm
(0 to .04
in.).
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INTAKE AND EXHAUST - Active Exhaust SystemINSPECTION
ACTIVE EXHAUST SWITCH
MllWCAA
(1) Remove switch garnish B from the knee protector.
05FOO5(2) Operate the switch and check the continuity between the
terminals.NOTEO-O indicates that there is continuity between the terminals.TSB Revision