oil MITSUBISHI 3000GT 1991 Owner's Guide

II-22ENGINE - Oil Pan and Oil Screen
OIL PAN AND OIL SCREENREMOVAL AND INSTALLATION
Pre-removal and Post-installation Operation
Draining and Refilling
l Engine Oil(Refer to GROUP 00 -Maintenance Service.)Removal and Installationl Front Air Dam (Refer to GROUP 51 - Aero Parts.)l Under Cover
,
(Refer to GROUP 22, 23 -Transfer Assembly.)
13 NmPI, ll.r
wOlLO156
Sealant: MITSUBISHI GENUINE Part
No. MD9971 10 or equivalent
9Nm- . .. .
60-70Nm -43 - 51 ft.lbs.
MllHA--
,9Nm7 ft.lbs.
26 ft.lbs.6Nm4ft.lbs.7
lt.lbS.
Removal steps
1. Left member7 Ctclrtny
3. Transaxle stay (front)4. Transaxle stay (rear) 5. Bell housing cover6. Connection of oil return pipes60-70
Nm_ .43 - 51 ftms.
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7. Oil pan8. Oil screen^.L^^“1 wu06
1

ENGINE - Winder Head Gasket11-23
CYLINDER HEAD GASKETREMOVAL AND INSTALLATION
MllJA-6
Pre-removal and Post-installation Operation
Draining and Supplying
l Engine Coolant(Refer to GROUP 00 -Maintenance Service.)Removal-and Installationl Air Intake Manifold(Refer to GROUP 15 -Air intake Manifold.)l Turbocharger (Refer to GROUP 15 -Turbocharger.)l Exhaust Manifold(Refer to GROUP 15 - Exhaust Manifold.)l Timing Belt(Referto P.l I-26.)
10 Nm3Nm
2.2 klbs.P
~~(Refer to GROUP 13 - Engrne Control.)
10 Nm7 ft.lbs.
7 ft.lbs.\
.- .-.../A- Q/-s+: 11 ft.lbs.
120-nng
‘3, ;
%
;;
Water01 LO21
7
i2o-IjONmY rt.lDS.
87
- 94 ft.lbs.
76 - 83 ft.lbs.d
fl (Turbo)i20-130 Nm87 - 94 ftlbs.(Non-turbo)105-115Nm76 - 83 ft.lbs.Removal steps
I. Pipe assembly
2. Blow-by hose
90
Nm3. Center cover (Front bank)
4. Spark plug cable
HI 5. Rocker cover4* l a
I
6. Intake camshaft sprocket7. Timing belt rear cover (Cent
7.----A//OlFOO218. Ignition coil9. Connection of heater hose10. Connection of water hoses
Rocker coverIOmm
410mm(.4 in.)1.4 in.)
OlA004;
Sealant: 3M ATD Part
No. 8660 or equivalent
.er)
tl-urbo>11. Connection of radiator hose
12. Thermostat housing
13. Connection of water inlet pipe** l + 14. Cylinder head assembly** 15. Cylinder head gasket
(Front bank)TSB Revision

11-24ENGINE - Cylinder Head Gasket
ldentlfrcatlonmark
01 N009iOlL0472
0111044
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Q80401Q5 c
Frontbank074930296
- OlL105j8
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5SERVICE POINTS OF REMOVALMllJBBF
6. REMOVAL OF INTAKE CAMSHAFT SPROCKET
(1) Using a wrench, hold the camshaft at its hexagon and
remove the camshaft sprocket bolt.
Caution
Locking the camshaft sprocket with a tool damages
the sprocket.(2) Remove the camshaft sprockets.
14. REMOVAL CYLINDER HEAD ASSEMBLYUsing the special tool, remove the cylinder head assembly.
SERVICE POINTS OF INSTALLATION
MllJDEJ
15. INSTALLATION OF CYLINDER HEAD GASKET
(1) Make sure that the gasket has the proper identification
mark for the engine.
(2) Lay the cylinder head gasket on the cylinder block with
the identification mark at the front top.
14. INSTALLATION OF CYLINDER HEAD ASSEMBLY
(1)Use a scraper to clean the gasket surface of the cylinder
head assembly.
CautionTake care that no foreign material gets into the
cylinder, coolant passages or oil passages.
(2) Using the special tool and a torque wrench, tighten the
bolts to the specified torque in the order shown in the
illustration. (in two or three cycles)
CautionInstall the head bolt washers with shear droop
upward as shown in the illustration.
(3) Back off the bolts once and tighten them to the
specified torque as shown in step (2).

ENGINE - Timinn Belt11-27
r bol
I01 NO07
10. REMOVAL OF ENGINE SUPPORT BRACKETRemove the engine support bracket in the numbered
sequence shown in the illustration.
Spraying lubricant, slowly remove the bolt (reamer bolt)
indicated by the arrow.
CautionKeep in mind that the reamer bolt is sometimes heat
seized on the engine support bracket.
Timing mark
mshaftrocket01 N009:
d Soft jawSoft jaw
OlL104E
Set hole
n
12. REMOVAL OF TIMING BELT(1) Align the timing marks.
(2) Make a mark on the back of the timing belt indicating
the direction of rotation so it may be reassembled in the
same direction if it is to be reused.
(3) Loosen the center bolt on the tensioner pulley to
remove the timing belt.
Caution
Water or oil on the belt shorten its life drastically, sothe removed timing belt, sprocket, and tensioner
must be free from oil and water. These parts should
not be washed. Replace parts if seriously contamin-
ated.
If there is oil or water on each part check. the front
case oil seals, camshaft oil seal and water pump for
leaks.SERVICE POINTS OF INSTALLATION
MllKDDB
13. INSTALLATION OF AUTO TENSIONER
(‘I) If the auto tensioner rod is in its fully extended position,
reset it as follows.@ Keep the auto tensioner level
and: in that position,
clamp it in the vise with soft jaws.@ Push in the rod little by little with the vise until the
set hole @ in the rod is aligned with that @ in the
cylinder.
CautionPush in the rod slowly to prevent the push rod
from being damaged.@ Insert a wire [I
.4 mm (.055 in.) in diameter] into the
set
ho&.@ Unclamp the auto tensioner from the vise.
(2) Install the auto tensioner.
CautionLeave the wire installed in the auto tensioner.
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ENGINE - Rocker Arm and Camshaft11-31
ROCKER ARM AND CAMSHAFTREMOVAL AND INSTALLATION
11 Nm8 ftlbs.
MllZA-0
7EN0244
Removal steps
I. Crank angle sensor adaptor2. Bearing cap front3.Oil seal
4. Bearing cap rear
5.Circular packing6.Bearing cap No.27.Bearing cap No.4
8.Bearing cap No.3
9.Camshaft10.Rocker arm11.Lash adjuster
Installation steps
11. Lash adjuster10. Rocker arml * 9. Camshaft*a 8. Bearing cap No. 3l *7. Bearing cap No. 4l *6. Bearing cap No. 2** 4. Bearing cap rearI)* 2. Bearing cap front*+ 5. Circular packingl 43. Oil sealI. Crank angle sensor adaptor
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ENGINE - Rocker Arm and Camshaft11-33
About 10 mm C.39 In.17ENO248
i,(2) Tighten gradually in two or three steps and finally
tighten to specified torque.
(3) Measure the camshaft end play. Replace if the limit is
exceeded.
Standard value: 0.1
- 0.2 mm (.004 - .008 in.)
Limit: 0.4 mm
(.016 in.)
NOTEIf the bearing cap is installed with the cylinder cap
removed, the valve will protrude. Install, therefore, with
the cylinder head lifted by about
10 mm (.39 in.).
5. INSTALLATION OF CIRCULAR PACKING
Using the special tool, insert the circular packing.
3. INSTALLATION OF OIL SEAL
Using the special tool, insert the oil seal.
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11-38ENGINE - Cylinder Head and Valve
Enamelcoatedside
Springretainer
Stem seal
pring sheet
6EN024SERVICE POINTS OF INSTALLATION
MllODAH15.13. INSTALLATION OF VALVE STEM SEAL
Install the spring seat, then using the special tool, install the
stem seal by lightly tapping the tool.
d
Caution1. Incorrect installation of the seal without using the
special tool will result in poor sealing and cause oilleakage down valve guide.
2. Do not reuse stem seal.
11.7. INSTALLATION OF VALVE SPRING
Valve springs should be installed with the enamel coated
side toward the valve spring retainer.
9. 5. INSTALLATION OF RETAINER LOCK
Using the special tool, install the retainer lock
4. INSTALLATION OF CYLINDER. HEAD GASKET
Identification mark:

2DN
2DT
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II-40ENGINE - Oil Pan and Oil Pump
OIL PAN AND OIL PUMPREMOVAL AND INSTALLATIONMllRA--
d
,,,/jgfq/Y “ 10 Nm14
75 Nm55 ftlbs.
I
19 Nm14 ft.lbs.
45 Nm33 ft.lbs.
51u00105LUOOll
Sealant: 3M ATD Part No. 8660 or
equivalent6Nrn
5 tklbs.
7EN0317
!
Groove 4Groove 4Bolt hole 0110156Bolt hole 0110156portionportionportionportion
sealant: MITSUBISHI GENUINE PartNo. MD9971 10 or equivalen
\
‘d
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ENGINE - Oil Pan and Oil Pump
Removal steps
1. Transaxle stay (front)
2. Transaxle stay (rear)
3. Oil pressure switch4.
Z:
;:9.10.l+11.l*12.** l * 13.
Oil pressure gauge unitOil filterOil cooler by-pass valve
Oil filter bracket stay
Oil filter bracket
Oil filter bracket gasket
Drain plugDrain plug gasket0; y; boltI
16. Relief plug17. Relief spring18. Relief plunger** 19. Crankshaft front oil seal
20. Oil pump case
21. Oil pump gasket
22. Oil pump cover
23. Oil pump outer rotor
24. Oil pump inner rotor
14. Oil screen
15. Oil screen gasket
Side
clearance
BodyclearanceSERVICE POINTS OF REMOVALMllRBBB
13. REMOVAL OF OIL PAN
(1) Knock the special tool in deeply between the oil pan and
cylinder block.
(2) Hitting the side of the special tool, slide and remove the
oil pan.
INSPECTION
OIL PUMPMllRKAB
Assemble the rotor on the oil pump and check the clearance
with a feeler gauge.
Standard value:
Body clearanceO.lOO- 0.181 mm (.0039 - .0071 in.)
Side clearance0.040 - 0.095 mm (.0016 - .0037 in.)
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II-42ENGINE - Oil Pan and Oil Pump
6LUOl;
Oil pumpcase7EN0139
Sealant coating area(Top view)
4 mm (. 16 in.) diameterOIL COOLER BY-PASS VALVE
(1) Make sure that the valve moves smoothly.
(2) Ensure that the dimension L measures the standard value
under normal temperature and humidity.
Dimension L: 34.5 mm (1.358 in.)
(3) The dimension must be the standard value when measured
after the valve has been dipped in 100°C (212°F) oil.
Dimension L: 40 mm (1.57 in.) or more
SERVICE POINTS OF INSTALLATIONMllRDEC
19. INSTALLATION OF CRANKSHAFT FRONT OIL SEALUsing the special tool, knock the oil seal into the oil pump
case.
NOTEKnock it as far as the surface.
13. APPLICATION OF SEALANT TO OIL PAN
(1) Apply specified sealant all around the oil pan flange to a
diameter of 4 mm
(.I6 in.).
Specified sealant: MITSUBISHI Genuine Part No.
MD9971 10 or equivalent(2) Install the oil pan within 15 mins. after applying the
liquid gasket.
Dead sealant
Groove areaBolt hole area7EN0305
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