Mitsubishi 6A1 User Manual
ENGINE
6A1 SERIES
CONTENTS
11A-0-1
GENERAL INFORMATION
1.SPECIFICATIONS
SERVICE SPECIFICATIONS
REWORK DIMENSIONS
TORQUE SPECIFICATION
NEW TIGHTENING METHOD - BY USE OF BOLTS TO BE
TIGHTENED IN PLASTIC AREA
SEALANTS
FORM-IN-PLACE GASKET (FIPG)
2.SPECIAL TOOLS
3.DRIVE BELT
4.TIMING BELT
5.FUEL AND EMISSION CONTROL PARTS
6.IGNITION SYSTEM
7.WATER PUMP AND WATER PIPE
8.INTAKE MANIFOLD AND EXHAUST MANIFOLD
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11A-0-3
11A-1-1
11A-1-1
11A-1-3
11A-1-4
11A-1-7
11A-1-7
11A-1-8
11A-2-1
11A-3-1
11A-4-1
11A-5-1
11A-6-1
11A-7-1
11A-8-1
9.ROCKER ARM AND CAMSHAFT <SOHC>
10.ROCKER COVER AND CAMSHAFT <MIVEC>
11.ROCKER ARM AND ROCKER SHAFT CAP <MIVEC>
12.CYLINDER HEAD AND VALVES
13.OIL PUMP CASE AND OIL PAN
14.PISTON AND CONNECTING ROD
15.CRANKSHAFT, CYLINDER BLOCK, FLYWHEEL
AND DRIVE PLATE
Mitsubishi Motors Corporation Feb. 1997 PWEE9622
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11A-9-1
11A-10-1
11A-11-1
11A-12-1
11A-13-1
11A-14-1
11A-15-1
11A-0-2
NOTES
Mitsubishi Motors Corporation Feb. 1997 PWEE9622
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6A1 ENGINE (E-W) -
General Information
GENERAL INFORMATION
GENERAL SPECIFICATIONS
Descriptions 6A12 6A13
11A-0-3
Type 60è V, OHV, SOHC (for each bank)
Number of cylinders 6 6
Combustion chamber Pentroof type
Total displacement dm
Cylinder bore mm
Piston stroke mm
Compression ratio or 9.0*
V alve timing (Low-speed cam)
Lubrication system Pressure feed, full-flow filtration Pressure feed, full-flow filtration
Intake
valve
Exhaust
valve
3
Opens
(BTDC)
Closes
(ABDC)
Opens
(BBDC)
Closes 15è
(ATDC)
60è V, OHV, DOHC (for each bank)
Pentroof type
1,998 2,498
78.4 81.0
69.0 80.8
10.0 9.5*
15è
37.5è
(High-speed cam)
41è
(Low-speed cam)
82.5è
(High-speed cam)
41è
(Low-speed cam)
75è
(High-speed cam)
(Low-speed cam)
30è
(High-speed cam)
1 2
15è
53è
53è
15è
Oil pump type Trochoid type Trochoid type
Cooling system Water-cooled forced circulation Water-cooled forced circulation
Water pump type Centrifugal impeller type Centrifugal impeller type
NOTE
1
*
: Europe and Hong Kong
2
*
: GCC and Export
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6A1 ENGINE (E -W) -
Specifications
1. SPECIFICATIONS
SERVICE SPECIFICATIONS
Items Standard value Limit
Timing belt
Auto tensioner rod projection mm 12.0 -
11A-1-1
Auto tensioner rod pushed-in amount (when pushed with a force of 98 - 196 N) mm
Rocker arm and camshaft <SOHC>
Camshaft cam height mm
Camshaft journal diameter mm
Rocker cover and camshaft <MIVEC>
Camshaft cam height mm (Low-speed cam)
Camshaft journal diameter mm
Valve clearance mm
Cylinder head and valve
Intake 35.20 34.70
Exhaust 34.70 34.20
Intake 34.34 33.84
(High-speed cam)
Exhaust 34.40 33.90
Intake 0.10 Exhaust 0.13 -
(Low-speed cam)
(High-speed cam)
1.0 or less
45 -
36.46 35.96
35.86 35.36
26 -
Flatness of cylinder head gasket surface mm - Cylinder head gasket surface grinding limit (including grinding of
cylinder block gasket surface) mm
Cylinder head overall height SOHC - 120.1 -
mm
MIVEC
Cylinder head bolt nominal length mm
V alve margin mm
Valve stem diameter mm
V alve stem-to-guide clearance
mm
V alve face angle
V alve stem projection mm
Intake 1.0 0.5
Exhaust 1.3 0.8
Intake 0.02 - 0.05 0.10
Exhaust
SOHC 48.45 48.95
MIVEC 48.40 48.90
Less than 0.03
119.9
119.6 119.8
- -
- 96.4
6.0 -
0.04 - 0.07 0.15
45è - 45.5è -
-
Mitsubishi Motors Corporation Feb. 1997 PWEE9622
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11A-1-2
6A1 ENGINE (E-W) -
Specifications
Items Limit
Overall valve length mm 113.02 112.52
V alve spring free height mm
V alve
height N/mm
Valve spring squareness
Valve seat contact width mm
V alve guide internal diameter mm
Valve guide projection mm
spring load/installed SOHC 265/43.4 -
Intake SOHC
MIVEC
Exhaust SOHC
MIVEC
SOHC 49.9 48.9
MIVEC 51.5 50.5
MIVEC 255/44.5 -
SOHC 14.0 MIVEC 19.0 -
Standard value
112.37 111.87
115.32 114.82
110.74 110.74
2è 4è
0.9 - 1.3 -
6.6 -
Oil pump case and oil pan
Oil i 0.06 - 0.18 -
pump t p clearance mm
Oil 0.04 - 0.10 -
pump side clearance mm
Oil 0.10 - 0.18 0.35
pump body clearance mm
Piston and connecting rod
Piston outside diameter mm
Piston ring side clearance mm No.1 ring
Piston ring end gap mm No.1 ring
Piston pin outside diameter mm Piston pin press-in load (at room temperature) N -
6A12 78.4 6A13 81.0 -
0.02 - 0.06 -
No.2 ring
No.2 ring
Oil ring 0.20 - 0.50 1.0
0.02 - 0.06 -
0.20 - 0.35 0.8
0.35 - 0.50 0.8
19.0
4,900 - 14,700
Crankshaft pin oil clearance mm 0.02 - 0.05 0.1
Connecting rod big end side clearance mm 0.4
Crankshaft, cylinder block, flywheel and drive plate
Crankshaft end play mm 0.05 - 0.25 0.4
Mitsubishi Motors Corporation Feb. 1997 PWEE9622
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0.10 - 0.25
6A1 ENGINE (E-W) -
Specifications
11A-1-3
Items Limit
Crankshaft journal diameter 6A12 53.0 -
mm
6A13
Crankshaft pin diameter mm
Crankshaft journal oil clearance mm
Cylinder block gasket surface flatness mm
Cylinder block gasket surface grinding limit (including grinding of
cylinder head gasket surface) mm
Cylinder block overall height
mm
Cylinder block cylindricity mm 0.01 or less
Cylinder block internal diame- 6A12 78.4 -
ter mm
Bearing cap bolt nominal length mm 71.1
6A12 43.0 6A13 51.0 -
6A12 190.0 6A13
6A13 81.0 -
Standard value
56.0 -
0.02 - 0.04 0.1
0.05 -
- 0.2
209.0 -
-
-
Piston-to-cylinder clearance mm 0.02 - 0.04 -
REWORK DIMENSIONS
Item Standard
Cylinder head and valves
Cylinder head oversize valve guide hole diameter mm 0.05 O.S. 11.05 11.07
0.25 O.S. 11.25 11.27
0.50 O.S. 11.50 11.52
Oversize intake valve seat 0.3 O.S.
ring hole diameter mm
Oversize exhaust valve SOHC 27.80 - 27.82
seat ring diameter mm
SOHC 29.80 - 29.82
0.6 O.S.
MIVEC 32.30 - 32.32
MIVEC 29.80 - 29.82
0.3 O.S.
0.6 O.S.
0.3 O.S.
0.6 O.S.
0.3 O.S.
-
-
-
30.10 - 30.12
32.60 - 32.62
28.10 - 28.12
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0.6 O.S.
30.10 - 30.12
11A-1-4
6A1 ENGINE (E-W) -
Specifications
TORQUE SPECIFICATION
Items Nm
Alternator and drive belt
Alternator pivot nut 44
Alternator bolt 21
Oil level gauge guide 23
Tensioner pulley 15
Engine hanger 23
Tensioner pulley bracket A 45
Crankshaft bolt 182
Engine cover 3
Timing belt
Timing belt front cover 11
Engine support bracket 49
Angle sensor 9
Angle sensor connector bracket 11
Tensioner pulley 48
Tensioner arm 24
Auto tensioner 21
Camshaft sprocket bolt 88
Idler pulley 35
Timing belt rear cover 11
Angle sensor connector bracket 11
Fuel and emission control parts
Air intake plenum stay 18
Connector bracket 11
EGR valve 22
Throttle body 12
Air intake plenum 18
Delivery pipe 12
Fuel pipe 9
Fuel pressure regulator 9
Alternator bracket 23
K
Feb. 1997 Mitsubishi Motors Corporation
PWEE9622
6A1 ENGINE (E-W) -
Items Nm
Ignition system
Spark plug 25
Water cover (SOHC) 11
Distributor (SOHC) 13
Ignition failure sensor (MIVEC) 10
Condenser bracket assembly (MIVEC) 5
Ignition coil (MIVEC) 10
Water pump and water pipe
Engine hanger (MIVEC) 11
Engine coolant temperature gauge unit 11
Engine coolant temperature sensor 29
Heater pipe (SOHC) 23
Specifications
11A-1-5
Water inlet fitting 18
Water outlet fitting 18
Thermostat housing 23
Water pipe 13
Water pump 23
Intake manifold and exhaust manifold
Intake manifold 17
Heat protector 13
Exhaust manifold stay 44
Exhaust manifold 49
Rocker arm and camshaft <SOHC>
Rocker cover 4
Rocker arm and rocker shaft 31
Thrust case 24
Rocker arm and camshaft <MIVEC>
Rocker cover 4
Oil control valve holder 9
Cam cap 24
Bearing cap M6 11
Bearing cap M8 24
K
Feb. 1997 Mitsubishi Motors Corporation
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11A-1-6
Items Nm
6A1 ENGINE (E-W) -
Specifications
Arm spring holder
Rocker arm and rocker shaft cap <MIVEC>
Rocker shaft cap 11
Cylinder head and valves
Cylinder head bolt 20 + 120è + 120è
Oil pan and oil pump
Oil pressure switch 10
Oil filter cover 21
Water hose 30
Bolt 68
Drain plug 39
Oil level sensor 9
Oil pan 7
Oil screen 19
11
Baffle plate 9
Relief plug 44
Oil pump case 14
Oil pump case cover 12
Piston and connecting rod
Connecting rod 18 + 90è - 100è
Crankshaft, cylinder block, flywheel and drive plate
Detonation sensor 23
Idler pulley bracket 35
Flywheel bolt 98
Drive plate bolt 98
Rear plate 11
Bell housing cover 9
Oil seal case 11
Bearing cap bolt 25 + 90è - 100è
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6A1 ENGINE (E-W) -
Specifications
11A-1-7
NEW TIGHTENING METHOD - BY USE OF BOLTS TO BE TIGHTENED IN PLASTIC AREA
A new type of bolts, to be tightened in plastic area, is currently used in some parts of the engine. The
tightening method for the bolts is different from the conventional one. Be sure to observe the method
described in the text when tightening the bolts.
Service limits are provided for the bolts. Make sure that the service limits described in the text are strictly
observed.
J Areas where the bolts are in use:
(1) Cylinder head bolts
(2) Main bearing cap bolts
(3) Connecting rod cap bolts
J Tightening Method
After tightening the bolts to the specified torque, tighten them another 90è to 100è, or 240è (twice
120è). The tightening method varies on different areas. Observe the tightening method described
in the text.
SEALANTS
Item
Water pump*
Water outlet fitting*
Engine coolant temperature sensor
Engine coolant temperature gauge unit
Camshaft bearing 3M ATD Part No. 8660 or equivalent As required
Cam cap 3M ATD Part No. 8660 or equivalent As required
Oil control valve 3M ATD Part No. 8660 or equivalent As required
Camshaft holder* Mitsubishi Genuine Part No. MD970389 or equivalent As required
Rocker cover 3M ATD Part No. 8660 or equivalent As required
Oil pump case* Mitsubishi Genuine Part No. MD970389 or equivalent As required
Oil pan*
Oil pressure switch 3M ATD Part No. 8660 or equivalent As required
Oil seal case* Mitsubishi Genuine Part No. MD970389 or equivalent
Specified sealant Quantity
Mitsubishi Genuine Part No. MD970389 or equivalent
Mitsubishi Genuine Part No. MD970389 or equivalent As required
3M Nut Locking Part No. 4171 or equivalent
3M ATD Part No. 8660 or equivalent As required
Mitsubishi Genuine Part No. MD970389 or equivalent As required
As required
As required
As required
Drive plate bolt 3M Nut Locking Part No. 4171 or equivalent As required
Flywheel bolt 3M Nut Locking Part No. 4171 or equivalent As required
*: parts sealed by foam-in-place gasket (FIPG)
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11A-1-8
6A1 ENGINE (E-W) -
Specifications
FORM-IN-PLACE GASKET (FIPG)
The engine has several areas where the form-in-place gasket (FIPG) is in use. To ensure that the gasket
fully serves its purpose, it is necessary to observe some precautions when applying the gasket. Bead
size, continuity and location are of paramount importance. Too thin a bead could cause leaks. Too thick
a bead, on the other hand, could be squeezed out of location, causing blocking or narrowing of the
fluid feed line. To eliminate the possibility of leaks from a joint, therefore, it is absolutely necessary to
apply the gasket evenly without a break, while observing the correct bead size.
The FIPG used in the engine is a room temperature vulcanisation (RTV) type a n d is supplied in a 100-gram
tube (Part No. MD970389 or MD997110). Since the RTV hardens as it reacts with the moisture in the
atmospheric air, it is normally used in the metallic flange areas. The FIPG, Part No. MD970389, can
be used for sealing both engine oil and coolant, while Part No. MD997110 can only be used for engine
oil sealing.
Disassembly
The parts assembled with the FIPG can be easily disassembled without use of a special method. In
some cases, however, the sealant between the joined surfaces may have to be broken by lightly striking
with a mallet or similar tool. A flat an d thin gasket scraper may be lightly hammered in between the
joined surfaces. In this case, however, care must be taken to prevent damage to the joined surfaces.
For removal of the oil pan, the special tool “Oil Pan Remover” (MD998727) is available. Be sure to use
the special tool to remove the oil pan.
Surface Preparation
Thoroughly remove all substances deposited on the gasket application surfaces, using a gasket scraper
or wire brush. Check to ensure that the surfaces to which the FIPG is to be applied is flat. Make sure
that there are no oils, greases and foreign substances deposited on the application surfaces. Do not
forget to remove the old sealant remained in the bolt holes.
Form-in-Place Gasket Application
When assembling parts with the FIPG, you must observe some precautions, but th e procedures is very
simple as in the case of a conventional precut gasket.
Applied FIPG bead should be of the specified size and without breaks. Also be sure to encircle the
bolt hole circumference with a completely continuous bead. The FIPG can be wiped away unless it is
hardened. While the FIPG is still moist (in less than 15 minutes), mount the parts in position. When
the parts are mounted, make sure that the gasket is applied to the required area only. In addition, do
not apply any oil or water to the sealing locations or start the engine until a sufficient amount of time
(about one hour) has passed after installation is completed.
The FIPG application procedure may vary on different areas. Observe the procedure described in the
text when applying the FIPG.
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2. SPECIAL TOOLS
6A1 ENGINE (E-W) -
Special Tools
11A-2-1
Tool
Number Name Use
MB990685
MB990938 Handle
MB990767 Crankshaft pulley
MB991477
Torque wrench Adjustment of timing belt tension
Use with MD998776
Holding camshaft sprocket when loosening
holder
Valve adjusting Adjustment of valve clearance (MIVEC)
wrench
and tightening of bolt.
Use with MD998719
MB991478
MB991479
MB991614
MB991653
Valve adjusting
wrench feeler
gauge set
Rocker arm
piston checker
Angle gauge Tightening cylinder head bolt
Cylinder head bolt Tightening and loosening of cylinder head bolt
wrench
Adjustment of valve clearance (MIVEC)
Adjustment of valve clearance (MIVEC)
MB991659
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Guide D Removal of piston pin (Use with MD998780)
11A-2-2
6A1 ENGINE (E-W) -
Special Tools
Tool Use
MD998440
MD998441
MD998442 Ai Ai
MD998443
NameNumber
Leak-down tester Leak-down test of lash adjuster
Lash adjuster r bleeding of lash adjuster
retainer
r bleed wire r bleeding of lash adjuster
Lash adjuster Retainer for holding lash adjuster in rocker arm
holder
Ai
at time of removal and installation of rocker arm
and rocker shaft assembly
MD998713
MD998716
MD998717 il
MD998719 Pulley holder pin
Camshaft oil seal Installation of camshaft oil seal
installer
Crankshaft wrench Rotation of crankshaft when installing piston
Crankshaft front o
seal installer
(2)
and timing belt.
Installation of crankshaft front oil seal
Use with MB990767
MD998727
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Oil pan remover Removal of oil pan
6A1 ENGINE (E-W) -
Special Tools
11A-2-3
Tool Use
MD998735
MD998754 Pin
MD998767
MD998772
NameNumber
Valve spring Compression of valve spring
compressor
Use with MB990767
Tensioner pulley
socket wrench
Valve spring Removal and installation of valve and related
compressor parts
Adjustment of timing belt tension
MD998774 stem seal
MD998775 stem seal
MD998776 il
MD998777
V alve Installation of valve stem seal
installer
V alve Installation of valve stem seal
installer
Crankshaft rear o
seal installer
Camshaft oil seal
installer adapter
Installation of crankshaft rear oil seal
Use with MB990938
Installation of camshaft oil seal
Mitsubishi Motors Corporation Feb. 1997 PWEE9622
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11A-2-4
6A1 ENGINE (E-W) -
Special Tools
Tool Use
MD998780
MD998781
MD998784
NameNumber
SETTING TOOL
Piston p
Flywheel stopper Holding flywheel and drive plate
Valve spring Compression of valve spring (MIVEC)
compressor
adapter
in
Removal and installation of piston pin
(Use with MD998772)
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6A1 ENGINE (E-W) -
3. DRIVE BELT
REMOVAL AND INSTALLATION <SOHC>
44 Nm
21 Nm
2
16
Drive Belt
3Nm
11A-3-1
1
23 Nm
6
15 Nm
3
23 Nm
5
44 Nm
8
4
10
7
11
9
44 Nm
12
182 Nm
13
15
14
Removal steps
1. Drive belt 9. T ensioner pulley bracket B
2. Alternator 10. Adjusting stud
3. Oil level gauge (dipstick) 11. Adjusting bolt
4. Oil level gauge guide G
5. O-ring 13. Special washer
6. Tensioner pulley 14. Crankshaft pulley
7. Engine hanger 15. Flange
8. Tensioner pulley bracket A 16. Engine cover
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++
A
G 12. Crankshaft bolt
A
11A-3-2
6A1 ENGINE (E-W) -
REMOVAL AND INSTALLATION <MIVEC>
21 Nm
44 Nm
2
Drive Belt
3Nm
16
23 Nm
15 Nm
1
11
44 Nm
9
3
12
13
15
14
23 Nm
7
6
10
44 Nm
8
4
182 Nm
5
Removal steps
1. Drive belt 9. T ensioner pulley bracket B
2. Alternator 10. Adjusting stud
3. Oil level gauge (dipstick) 11. Adjusting bolt
4. Oil level gauge guide G
5. O-ring 13. Special washer
6. Tensioner pulley 14. Crankshaft pulley
7. Engine hanger 15. Flange
8. Tensioner pulley bracket A 16. Engine cover
++
A
G 12. Crankshaft bolt
A
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MD998781
6A1 ENGINE (E-W) -
REMOVAL SERVICE POINTS
G
A+ CRANKSHAFT PULLEY BOLT REMOVAL
(1) Hold the flywheel or drive plate in position with the special
tool before removing the crankshaft pulley bolts.
INSTALLATION SERVICE POINTS
+
AG CRANKSHAFT PULLEY BOLT INSTALLATION
(1) Hold the flywheel or drive plate in position with the special
6AE0039
tool before installing the crankshaft pulley bolts.
Drive Belt
11A-3-3
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6A1 ENGINE (E-W) -
4. TIMING BELT
REMOVAL AND INSTALLATION <SOHC>
Timing Belt
11A-4-1
88 Nm
24 Nm
21 Nm
14
48 Nm
8
10
15
4
6
9
35 Nm
7
11 Nm
11 Nm
16
17
1
11
3
12
13
18
11 Nm
5
2
49 Nm
11 Nm
Removal steps
1. Timing belt front cover, upper right +BG 10. Auto tensioner
2. Timing belt front cover, upper left 11. Crankshaft sprocket
3. Timing belt front cover, lower 12. Sensing plate
4. Engine support bracket 13. Crankshaft spacer
5. Angle sensor G
GA++
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G 6. Timing belt 15. Camshaft sprocket
C
7. Tensioner pulley 16. Idler pulley
8. Tensioner arm 17. Timing belt rear cover, center
9. Tensioner spacer 18. Connector bracket
11 Nm
++
B
9Nm
G 14. Camshaft sprocket bolt
A
11A-4-2
6A1 ENGINE (E-W) -
REMOVAL AND INSTALLATION <MIVEC>
12 Nm
23
21
Timing Belt
48 Nm
22 Nm
12
9
44 Nm
88 Nm
16
10
13
49 Nm
11
17
35 Nm
14
11 Nm
19
15
11 Nm
11 Nm
17
1
22
18
9Nm
11 Nm
2
20
5
8
6
7
9Nm
9Nm
4
11 Nm
Removal steps
1. Timing belt front cover, upper right
2. Timing belt front cover, upper left
3. Timing belt front cover, lower
4. Engine support bracket
5. Angle sensor
6. Angle sensor
7. Spacer
GA++
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G
8. Timing belt
D
9. Tensioner pulley
10. Tensioner arm
11. Tensioner spacer
+
G 12. Auto tensioner
B
3
GB++
13. Crankshaft sprocket
14. Sensing plate
15. Washer
G 16. Camshaft sprocket bolt
A
17. Camshaft sprocket
18. Camshaft sprocket with sensing
plate
19. Idler pulley
20. Timing belt rear cover, left
21. Timing belt rear cover, right
22. Timing belt rear cover, center
23. Connector bracket
6A1 ENGINE (E-W) -
REMOVAL SERVICE POINTS
G
A+ TIMING BELT REMOVAL
(1) Mark the belt running direction for reference in
reinstallation.
(2) Loosen the bolt that secures the tensioner pulley to
remove the timing belt.
6AE0135
Timing Belt
11A-4-3
MD998719
MB990767
MD998754
MB990767
6AE0044
6AE0137
6AE0045
G
B+ CAMSHAFT SPROCKET BOLT REMOVAL
MD998719
MB990767
6AE0138
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INSTALLATION SERVICE POINTS
+
AG CAMSHAFT SPROCKET BOLT INSTALLATION
11A-4-4
MD998754
6A1 ENGINE (E-W) -
Timing Belt
MB990767
(B)
(A)
6AE0048
6AE0049
+
BG AUTO TENSIONER SETTING
(1) Set the auto tensioner in a vice, while making sure it
is not tilted.
(2) Slowly close the vice to force th e rod in until the set
hole (A) of the rod is lined up with the set hole (B) of
the cylinder.
(3) Insert a 1.4 mm wire in the set hole.
(4) Remove the auto tensioner from the vice.
6AE0050
+
CG TIMING BELT INSTALLATION
(1) Turn the crankshaft sprocket so that its timing mark will
be away from the mating timing mark by approx. three
teeth.
Caution
J
6AE0329
Timing mark
6AE0358
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(2) Bring the timing marks of the camshaft sprockets as shown
in the illustration.
If the timing marks are aligned, the piston is
brought to the TDC. When the camshaft is turned
under this condition, the valves may interfere with
the piston.
6A1 ENGINE (E-W) -
(3) Align the timing mark on the crankshaft sprocket with
that on the cylinder block side.
(4) Fit the timing belt on the sprockets in the following order:
1) Fit the timing belt on the crankshaft sprocket and
then, while giving tension to the belt, fit it on the
water pump sprocket.
2) Fit the belt on the left bank camshaft sprocket.
3) Fit the belt on the idler pulley while keeping it tight.
4) Align the timing mark on the right bank camshaft
sprocket with the mark on the cylinder block, a nd
6AE0331
then fit the belt on the camshaft sprocket.
Caution
J
The camshaft sprockets are prone to rotate. Avoid
giving excessive tension to the timing belt when
it is fitted.
Timing Belt
11A-4-5
MB990685
MD998767
5) Make sure that the left bank portion of the belt is
not slack when the belt is fitted on the tensioner pulley.
If it is slack, remove the belt and fit it again beginning
with the first step.
6AE0143
(5) Move the tensioner pulley in the direction of the arrow
and hold it in raised position by tightening the tensioner
pulley bolt.
(6) Check that all timing marks are aligned correctly.
(7) Turn the crankshaft counterclockwise a quarter turn.
(8) Turn back the crankshaft clockwise until the timing marks
align again.
6AE0057
(9) Install the special tool and a torque wrench of 0 - 5
Nm to the tensioner pulley.
(10)Torque the tensioner pulley to 3 Nm with the torque
wrench.
(11) While holding the tensioner pulley, tighten the center bolt
to specification.
(12)Turn the crankshaft clockwise 2 turns and let it stand
for about 5 minutes.
6AE0058
Mitsubishi Motors Corporation Feb. 1997 PWEE9622
K
11A-4-6
6A1 ENGINE (E-W) -
+
DG TIMING BELT INSTALLATION
(1) Turn the crankshaft sprocket so that its timing mark will
be away from the mating timing mark by approx. three
teeth.
Caution
J
MD998716
6AE0051
(2) Bring the timing marks of the camshaft sprockets as shown
in the illustration.
Caution
J
Timing Belt
If the timing marks are aligned, the piston is
brought to the TDC. When the camshaft is turned
under this condition, the valves may interfere with
the piston.
If one of the camshaft sprockets on the right bank
is turned with the timing mark on the other
sprocket aligned, there may be danger for the
intake and exhaust valves to interfere with each
other.
Paper clip
6AE0311
6AE0053
6AE0054
(3) Align the timing mark on the crankshaft sprocket with
the mating timing mark, and then turn the crankshaft
counterclockwise by one tooth.
(4) Place the timing belt over the sprockets in the following
method.
Caution
J
The camshaft sprockets on the right bank can
turn very easily because of the valve spring
tension. Use care not to allow your fingers to get
caught between the sprockets.
)
Align the timing mark of the right bank exhaust
1
camshaft sprocket with the mating timing mark and
hold the timing belt on the sprocket with a paper
clip.
)
Align the timing mark of the intake camshaft sprocket
2
and place the timing belt around that sprocket. Then,
clip the belt at th e location shown.
Caution
J
The camshaft sprockets can turn easily and
do not give excessive tension to the timing
belt.
3) Place the timing belt around the idler pulley.
6AE0055
Mitsubishi Motors Corporation Feb. 1997 PWEE9622
K
6A1 ENGINE (E-W) -
4) On the left bank, make sure that the timing marks
of the camshaft sprockets are aligned and then hold
the timing belt on these sprockets with paper clips.
5) Place the timing belt around the water pump pulley.
6) Place the timing belt around the crankshaft sprocket.
7) Place the timing belt around the tensioner pulley.
6AE0056
(5) Move the tensioner pulley in the direction of the arrow
and hold it in raised position by tightening the tensioner
pulley bolt.
(6) Check that all timing marks are aligned correctly.
(7) Turn the crankshaft counterclockwise a quarter turn.
(8) Turn back the crankshaft clockwise until the timing marks
align again.
Timing Belt
11A-4-7
MB990685
MD998767
6AE0057
6AE0058
6AE0059
(9) Install the special tool and a torque wrench of 0 - 5
Nm to the tensioner pulley.
(10)Torque the tensioner pulley to 3 Nm with the torque
wrench.
(11) While holding the tensioner pulley, tighten the center bolt
to specification.
(12)Turn the crankshaft clockwise 2 turns and let it stand
for about 5 minutes.
(13)Make sure that the wire, which has been inserted when
installing the auto tensioner, can be removed easily.
Belt tension should be acceptable if the wire can be easily
removed. Remove the wrench. The belt tension can also
be verified by checking the protrusion amount of the auto
tensioner rod which should conform to the following.
Standard value: 3.8 - 4.5 mm
(14)If the wire cannot be removed easily or the rod protrusion
is not up to specification, repeat steps (9) through (12)
to obtain the correct tension.
INSPECTION
TIMING BELT
Replace belt if any of the following conditions exist.
(1) Hardening of back rubber.
Back side is glossy without resilience and leaves no indent
when pressed with fingernail.
8EN0066
Mitsubishi Motors Corporation Feb. 1997 PWEE9622
K
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