Mitsubishi 4G6 Series 1991 Specifications

11A-0-1
ENGINE
4G6 SERIES
CONTENTS
GENERAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11A-0-3
1. SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11A-1-1
SERVICE SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11A-1-1
TORQUE SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11A-1-4
NEW TIGHTENING METHOD BY USE OF BOLTS TO BE TIGHTENED IN PLASTIC AREA . . 11A-1-9
SEALANTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11A-1-9
FORM-IN-PLACE GASKET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11A-1-10
2. SPECIAL TOOLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11A-2-1
3. ALTERNATOR AND IGNITION SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . 11A-3-1
3a. INTAKE MANIFOLD (GDI) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11A-3a-1
4. TIMING BELT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11A-4-1
4a. EXHAUST MANIFOLD (GDI) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11A-4a-1
5. FUEL AND EMISSION CONTROL PARTS . . . . . . . . . . . . . . . . . . . . . . 11A-5-1
5a. FUEL PARTS (GDI) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11A-5a-1
6. WATER PUMP AND INTAKE MANIFOLD . . . . . . . . . . . . . . . . . . . . . . . 11A-6-1
6a. WATER PUMP AND WATER HOSE (GDI) . . . . . . . . . . . . . . . . . . . . . 11A-6a-1
7. EXHAUST MANIFOLD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11A-7-1
8. ROCKER ARMS AND CAMSHAFT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11A-8-1
8a. ROCKER ARMS AND CAMSHAFTS (GDI) . . . . . . . . . . . . . . . . . . . 11A-8a-1
9. CYLINDER HEAD AND VALVES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11A-9-1
10. FRONT CASE, COUNTERBALANCE SHAFTS AND OIL PAN 11A-10-1
11. PISTON AND CONNECTING ROD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11A-11-1
12. CRANKSHAFT, FLYWHEEL AND DRIVE PLATE . . . . . . . . . . . . . 11A-12-1
E Mitsubishi Motors Corporation
Aug. 1998
PWEE9616-A
Revised
11A-0-2
NOTES
E Mitsubishi Motors Corporation
Dec. 1996
PWEE9616
4G6 ENGINE <E - W> - General Information
11A-0-3
GENERAL INFORMATION
SOHC-4G63
Descriptions
Specifications
Type
In-line OHV, SOHC
Number of cylinders
4
Combustion chamber
Pentroof type
Total displacement dm3
1,997
Cylinder bore mm
85.0
Piston stroke mm
88.0
Compression ratio
10
Valve timing
Intake valve
Exhaust valve
Opens (BTDC)
18_
Closes (ABDC)
58_
Opens (BBDC)
58_
Closes (ATDC)
18_
Lubrication system
Pressure feed, full-flow filtration
Oil pump type
Involute gear type
SOHC-4G64
Descriptions
Specifications
Type
In-line OHV, SOHC
Number of cylinders
4
Combustion chamber
Pentroof type
Total displacement dm3
2,351
Cylinder bore mm
86.5
Piston stroke mm
100.0
Compression ratio
10
Valve timing
Intake valve
Exhaust valve
Opens (BTDC)
16_
Closes (ABDC)
53_
Opens (BBDC)
50_
Closes (ATDC)
16_
Lubrication system
Pressure feed, full-flow filtration
Oil pump type
Involute gear type
E Mitsubishi Motors Corporation
Aug. 1998
PWEE9616-A
Revised
11A-0-4
4G6 ENGINE <E - W> - General Information
GDIt
Descriptions
Specifications
Type
In-line OHV, SOHC
Number of cylinders
4
Combustion chamber
Pentroof + curved top piston type
Total displacement dm3
2,351
Cylinder bore mm
86.5
Piston stroke mm
100.0
Compression ratio
11.5
Valve timing
Intake valve
Exhaust valve
Opens (BTDC)
16_
Closes (ABDC)
60_
Opens (BBDC)
56_
Closes (ATDC)
16_
Lubrication system
Pressure feed, full-flow filtration
Oil pump type
Involute gear type
NOTE
GDI is a trademark of Mitsubishi Motors Corporation.
E Mitsubishi Motors Corporation
Aug. 1998
PWEE9616-A
Added
11A-1-1
4G6 ENGINE <E - W> - Specifications
1. SPECIFICATIONS
SERVICE SPECIFICATIONS
Items
Standard value
Limit
Auto-tensioner rod projection length mm
12
-
Auto-tensioner rod pushed-in amount [when pushed with a force of 98
- 196 N] mm
1.0 or less
-
Timing belt
Rocker arms and camshaft
4G63
SOHC
Intake
37.39
36.89
Exhaust
37.14
36.64
4G64
SOHC
Intake
37.39
36.89
Exhaust
36.83
36.33
Lash adjuster leak down time
[diesel fuel at 15 - 20_C] seconds/mm
3 - 20/1.0
-
Camshaft journal outer diameter mm
45
-
Intake
35.79
35.29
Exhaust
37.14
36.64
Lash adjuster leak down time
[diesel fuel at 15 - 20_C] seconds/mm
3 - 20/1.0
-
Camshaft journal outer diameter mm
26
-
Cylinder head flatness of gasket surface mm
Less than 0.05
0.2
Cylinder head grinding limit of gasket surface mm
Total resurfacing depth of both cylinder head and cylinder block
-
0.2
SOHC
120
-
GDI
132
-
-
Maximum 99.4
Intake
1.0
0.5
Exhaust
1.2
0.7
Intake
1.0
0.5
Exhaust
1.5
1.0
Intake
112.30
111.80
Exhaust
114.11
113.61
Intake
105.5
105.0
Exhaust
105.7
105.2
6.0
-
Camshaft cam height mm
Rocker arms and camshaft (GDI)
Camshaft cam height mm
Cylinder head and valves
Cylinder head overall height mm
Cylinder head bolt shank length mm
Valve thickness of valve head (margin) mm
SOHC
GDI
Valve overall height mm
SOHC
GDI
Valve stem outer diameter mm
E Mitsubishi Motors Corporation
Aug. 1998
PWEE9616-A
Revised
11A-1-2
4G6 ENGINE <E - W> - Specifications
Items
Standard value
Limit
Intake
0.02 - 0.05
0.10
Exhaust
0.03 - 0.07
0.15
Intake
0.02 - 0.05
0.10
Exhaust
0.05 - 0.09
0.15
45_ - 45.5_
-
SOHC
51.0
50.0
GDI
48.3
47.3
SOHC
267/44.2
-
GDI
294/40.0
-
SOHC
2_ or less
Maximum 4_
GDI
1.5_ or less
Maximum 4_
0.9 - 1.3
-
SOHC
6.0
-
GDI
6.6
-
Valve guide projection from cylinder head
upper surface mm
SOHC
14.0
-
GDI
19.5
-
Valve stem projection mm
SOHC
49.30
49.80
Intake
49.20
49.70
Exhaust
48.40
48.90
0.05 Oversize diameter
11.05 - 11.07
-
0.25 Oversize diameter
11.25 - 11.27
-
0.50 Oversize diameter
11.50 - 11.52
-
0.05 Oversize diameter
12.05 - 12.07
-
0.25 Oversize diameter
12.25 - 12.27
-
0.50 Oversize diameter
12.50 - 12.52
-
Intake oversize rework dimensions of valve
seat hole (SOHC) mm
0.3 Oversize diameter
34.30 - 34.33
-
0.6 Oversize diameter
34.60 - 34.63
-
Intake oversize rework dimensions of valve
seat hole (GDI) mm
0.3 Oversize diameter
35.30 - 35.33
-
0.6 Oversize diameter
35.60 - 35.63
-
Exhaust oversize rework dimensions of
valve seat hole (SOHC) mm
0.3 Oversize diameter
34.30 - 34.33
-
0.6 Oversize diameter
34.60 - 34.63
-
Exhaust oversize rework dimensions of
valve seat hole (GDI) mm
0.3 Oversize diameter
33.30 - 33.33
-
0.6 Oversize diameter
33.60 - 33.63
-
Valve thickness to valve guide clearance
mm
SOHC
GDI
Valve face angle mm
Valve spring free length mm
Valve spring load/installed height N/mm
Valve spring out-of-squareness
Valve seat valve contact width mm
Valve guide inner diameter mm
GDI
Oversize rework dimensions of valve guide
hole (SOHC) mm
Oversize rework dimensions of valve guide
hole (GDI) mm
E Mitsubishi Motors Corporation
Aug. 1998
PWEE9616-A
Revised
11A-1-3
4G6 ENGINE <E - W> - Specifications
Items
Standard value
Limit
Drive gear
0.08 - 0.14
-
Driven gear
0.06 - 0.12
-
78 or more
-
4G63
85.0
-
4G64
86.5
-
No. 1
0.02 - 0.06
0.1
No. 2
0.02 - 0.06
0.1
No. 1
0.25 - 0.35
0.8
No. 2
0.40 - 0.55
0.8
Oil ring side rail
0.10 - 0.40
1.0
Piston pin outer diameter mm
22.0
-
Piston pin press-in load N (Room temperature)
7,350 - 17,200
-
Crankshaft pin oil clearance mm
0.02 - 0.05
0.1
Connecting rod big end side clearance mm
0.10 - 0.25
0.4
Crankshaft end play mm
0.05 - 0.25
0.40
Crankshaft journal outer diameter mm
57.0
-
Crankshaft pin outer diameter mm
45.0
-
Crankshaft journal oil clearance mm
0.02 - 0.04
0.1
Bearing cap bolt shank length mm
-
Maximum 71.1
Piston to cylinder clearance mm
0.02 - 0.04
-
Cylinder block flatness of gasket surface mm
0.05
0.1
Cylinder block grinding limit of gasket surface mm
Total resurfacing depth of both cylinder head and cylinder block
-
0.2
4G63
284
-
4G64
290
-
4G63
85.0
-
4G64
86.5
-
0.01
-
Front case, counterbalance shaft and oil pan
Oil pump side clearance mm
Oil pressure at curb idle speed kPa [Oil temperature is 75 to 90_C]
Piston and connecting rod
Piston outer diameter mm
Piston ring side clearance mm
Piston ring end gap mm
Crankshaft, flywheel and drive plate
Cylinder block overall height mm
Cylinder block inner diameter mm
Cylindricity mm
E Mitsubishi Motors Corporation
Aug. 1998
PWEE9616-A
Revised
11A-1-4
4G6 ENGINE <E - W> - Specifications
TORQUE SPECIFICATIONS
Items
Nm
Alternator and ignition system
Water pump pulley
9
Adjusting bolt
10
Lock bolt
22
Alternator brace
23
Alternator pivot nut
44
Crankshaft pulley
25
Ignition coil (Multipoint fuel injection)
10
Spark plug
25
Distributor (Carburetor)
12
Camshaft position sensing cylinder (Multipoint fuel injection)
22
Camshaft position sensor support (Multipoint fuel injection)
14
Camshaft position sensor (Multipoint fuel injection)
10
Oil level gauge guide
13
Idler pulley bracket (M8) (Vehicle for Hong Kong)
22
Idler pulley bracket (M10) (Vehicle for Hong Kong)
49
Idler pulley (Vehicle for Hong Kong)
49
Intake manifold (GDI)
Vacuum pipe and hose (Flange bolt)
11
Vacuum pipe and hose (Bolt, washer assembly)
8.8
Solenoid valve
8.8
Vacuum pipe
11
Throttle body
11
Intake manifold stay (M6)
8.8
Intake manifold stay (M8)
30
Air intake plenum resonator (Flange bolt)
11
Air intake plenum resonator (Bolt, washer assembly)
8.8
EGR valve
23
EGR valve support
23
Intake manifold
19
Timing belt
Timing belt cover flange bolt
E Mitsubishi Motors Corporation
Aug. 1999
11
PWEE9616-B
Revised
11A-1-5
4G6 ENGINE <E - W> - Specifications
Items
Nm
Timing belt cover washer bolt
9
Power steering bracket
49
Crankshaft angle sensor (Multipoint fuel injection)
9
Tensioner arm
22
Tensioner puller
48
Auto tensioner
23
Idler pulley
35
Engine support bracket
49
Oil pump sprocket
54
Crankshaft bolt
118
Tensioner “B”
18
Counterbalance shaft sprocket
45
Camshaft sprocket bolt
88
Exhaust manifold (GDI)
Exhaust manifold cover
13
Exhaust manifold (M10)
49
Exhaust manifold (M8)
29
Engine hanger
11
Fuel and emission parts
Carburetor (Carburetor)
17
Fuel vapor separator (Carburetor)
23
Throttle body (Multipoint fuel injection)
18
EGR valve (Except General Export)
22
Injectors and delivery pipe (Multipoint fuel injection)
12
Fuel pressure regulator (Multipoint fuel injection)
9
Fuel part (GDI)
Fuel low pressure pipe (M6)
8.8
Fuel low pressure pipe (M8)
18
Fuel pump return nipple
8.8
Clamp A
8.8
Fuel pipe bracket
11
Fuel feed pipe
11
E Mitsubishi Motors Corporation
Aug. 1999
PWEE9616-B
Revised
11A-1-6
4G6 ENGINE <E - W> - Specifications
Items
Nm
Fuel pump
4.9 ® 17 ± 2
Harness bracket
8.8
Fuel return pipe
11
Fuel high pressure regulator
18
Fuel pressure sensor
18
Pump camshaft case
23
Injector holder
22
Delivery pipe and injector assembly
11
Engine hanger
11
Water pump and intake manifold
Engine coolant temperature sensor
29
Engine coolant temperature gauge unit
11
Water inlet fitting
13
Thermostat housing
24
Water inlet pipe
13
Water pump
14
Oil level gauge guide
14
Intake manifold stay
31
Intake manifold
19
Engine hanger
11
Detonation sensor (Multipoint fuel injection)
23
Water pump and water hose (GDI)
Engine coolant temperature sensor
29
Engine coolant temperature gauge unit
11
Water inlet fitting
12
Water outlet fitting
12
Thermostat housing
23
Water inlet pipe
12
Water pump
13
Knock sensor
22
Exhaust manifold
Exhaust manifold cover
E Mitsubishi Motors Corporation
13
Aug. 1999
PWEE9616-B
Revised
11A-1-7
4G6 ENGINE <E - W> - Specifications
Items
Nm
Heat protector
13
Exhaust manifold (M8)
29
Exhaust manifold (M10)
49
Water outlet fitting
13
Rocker arms and camshaft
Rocker cover
3.4
Rocker arm shaft
31
Rocker arms and camshafts (GDI)
Camshaft position sensor
8.8
Cover
9.8
Camshaft position sensing cylinder
21
Camshaft position sensing support
13
Beam camshaft cap
20
Cylinder head and valves
Cylinder head bolt
[Tighten to 78 Nm and then completely loosen before finally tightening with above procedure.]
20 + 90_ + 90_
Front case, counterbalance shaft and oil pan
Drain plug
39
Oil pan
6.9
Oil level sensor (For Europe)
8.8
Stiffener (For Europe)
21
Oil screen
18
Oil pressure switch (4G63)
19
Oil pressure switch (4G64)
9.8
Relief plug
44
Oil filter bracket
18
Plug
23
Flange bolt
36
Oil pump cover bolt
16
Oil pump cover screw
9.8
Front case
23
Transmission stay (GDI engine)
21
Oil level gauge guide
12
E Mitsubishi Motors Corporation
Aug. 1999
PWEE9616-B
Revised
11A-1-8
4G6 ENGINE <E - W> - Specifications
Items
Nm
Oil pan lower
6.9
Baffle plate
6.9
Oil pan upper
6.9
Piston and connecting rod
Connecting rod cap
20 + 90_ ® 100_
Crankshaft, flywheel and drive plate
Flywheel bolt
132
Drive plate bolt
132
Rear plate
11
Bell housing cover
8.8
Oil seal case bolt
11
Bearing cap bolt
25 + 90_ ® 100_
E Mitsubishi Motors Corporation
Aug. 1999
PWEE9616-B
Revised
11A-1-9
4G6 ENGINE <E - W> - Specifications
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 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.
D
D
Areas where the bolts are in use:
(1) Cylinder head bolts
(2) Main bearing cap bolts
(3) Connecting rod cap bolts
Tightening method
After tightening the bolts to the specified torque, tighten them another 90_ or 180_ (twice 90_). The
tightening method varies on different areas. Observe the tightening method described in the text.
SEALANTS
Item
Specified sealant
Quantity
Cam position sensor support
Mitsubishi Genuine Part No. MD970389 or
equivalent
As required
Engine coolant temperature sensor
3M Nut Locking Part No. 4171 or equivalent
As required
Engine coolant temperature gauge unit
3M ATD Part No. 8660 or equivalent
As required
Thermostat case
Mitsubishi Genuine Part No. MD970389 or
equivalent
As required
Water outlet fitting
Mitsubishi Genuine Part No. MD970389 or
equivalent
As required
Beam camshaft cap
Mitsubishi Genuine Part No. MD970389 or
equivalent
As required
Cylinder head
Mitsubishi Genuine Part No. MD970389 or
equivalent
As required
Oil pressure switch
3M ATD Part No. 8660 or equivalent
As required
Oil pan
Mitsubishi Genuine Part No. MD970389 or
equivalent
As required
Oil seal case
Mitsubishi Genuine Part No. MD970389 or
equivalent
As required
E Mitsubishi Motors Corporation
Aug. 1998
PWEE9616-A
Added
11A-1-10
4G6 ENGINE <E - W> - Specifications
FORM-IN-PLACE GASKET
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 and is supplied in a 100-gram
tube (Part No. MD970389). 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 and 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. <Except aluminium die-cast oil pans>
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 the 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.
E Mitsubishi Motors Corporation
Aug. 1998
PWEE9616-A
Added
4G6 ENGINE (E - W) - Special Tools
11A-2-1
2. SPECIAL TOOLS
Tool
E Mitsubishi Motors Corporation
Number
Name
Use
MB990767
Crankshaft pulley
holder
Holding camshaft sprocket
Use with MD998719.
MD990938
Handle
Installation of crankshaft rear oil seal
Use with MD998776.
MB991603
Silent shaft bearing
puller stopper
Guide stopper for removal and installation of
counterbalance shaft rear bearing
Use with MD998372.
MB991654
Cylinder head bolt
wrench (12)
Removal and installation of cylinder head bolt
MD998162
Plug wrench
Removal and installation of front case cap plug
Use with MD998783.
MD998285
Crankshaft front oil
seal guide
Guide for installation of crankshaft front oil seal
Use with MD998375.
MD998371
Silent shaft bearing
puller
Removal of counterbalance shaft front bearing
MD998372
Silent shaft bearing
puller
Removal of counterbalance shaft rear bearing
MD998375
Crankshaft
front
seal installer
Installation of crankshaft front oil seal
Dec. 1996
PWEE9616
11A-2-2
Tool
E Mitsubishi Motors Corporation
4G6 ENGINE (E - W) - Special Tools
Number
Name
Use
MD998440
Leak down tester
Leak down test of lash adjuster
MD998441
Lash adjuster
retainer
Air bleeding of lash adjuster
MD998442
Lash adjuster wire
Air bleeding of lash adjuster
MD998443
Lash adjuster
holder
Retainer for holding lash adjuster in rocker arm
at time of removal and installation of rocker
shaft assembly
MD998705
Silent shaft bearing
installer
Installation of counterbalance shaft front and
rear bearing
MD998713
Camshaft oil seal
installer
Installation of camshaft oil seal
MD998719
Pulley holder pin
Holding camshaft sprocket
Use with MB990767.
MD998727
Oil pan remover
Removal of oil pan
MD998735
Valve spring
compressor
Removal and installation of valve and related
parts
Dec. 1996
PWEE9616
4G6 ENGINE (E - W) - Special Tools
Tool
E Mitsubishi Motors Corporation
11A-2-3
Number
Name
Use
MD998738
Set screw
Adjustment of timing belt tension
MD998767
Tensioner
puller
socket wrench
Adjustment of timing belt tension
MD998772
Valve spring
compressor
Removal and installation of valve and related
parts
MD998774
Valve stem seal
installer
Installation of valve stem seal
MD998775
Valve stem seal
installer
Installation of valve stem seal
MD998776
Crankshaft rear oil
seal installer
Installation of crankshaft rear oil seal
Use with MB990938.
MD998778
Crankshaft
sprocket puller
Removal of crankshaft sprocket
MD998780
Piston setting tool
Removal and installation of piston pin
MD998781
Flywheel stopper
Holding of flywheel and drive plate
Aug. 1998
PWEE9616-A
Revised
11A-2-4
Tool
E Mitsubishi Motors Corporation
4G6 ENGINE (E - W) - Special Tools
Number
Name
Use
MD998783
Plug wrench
retainer
Removal and installation of front case cap plug
MD998785
Sprocket stopper
Holding silent shaft sprocket
Aug. 1998
PWEE9616-A
Added
11A-3-1
4G6 ENGINE (E - W) - Alternator and Ignition System
3. ALTERNATOR AND IGNITION SYSTEM
REMOVAL AND INSTALLATION <CARBURETOR>
8
6
12 Nm
7
25 Nm
10
4
10 Nm
9
3
44 Nm
22 Nm
2
24 Nm
5
9 Nm
25 Nm
1
Removal steps
1. Drive belt
2. Water pump pulley
3. Alternator brace
4. Alternator
5. Crankshaft pulley
6. Spark plug cable
7. Spark plug
8. High tension cable
"BA 9. Distributor assembly
10. O-ring
E Mitsubishi Motors Corporation
Dec. 1996
PWEE9616
11A-3-2
4G6 ENGINE (E - W) - Alternator and Ignition System
REMOVAL AND INSTALLATION <MULTIPOINT FUEL INJECTION>
10 Nm
7
10 Nm
6
9
25 Nm
10
8
11
4
22 Nm
10 Nm
3
14 Nm
44 Nm
r
22 Nm
24 Nm
2
5
9 Nm
25 Nm
1
Removal steps
1. Drive belt
2. Water pump pulley
3. Alternator brace
4. Alternator
5. Crankshaft pulley
6. Spark plug cable
E Mitsubishi Motors Corporation
Dec. 1996
7.
8.
9.
"AA 10.
11.
PWEE9616
Ignition coil assembly
Spark plug
Camshaft position sensor
Camshaft position sensing support
Camshaft position sensing cylinder
11A-3-3
4G6 ENGINE (E - W) - Alternator and Ignition System
REMOVAL AND INSTALLATION (GDI)
9.8 Nm
11
25 Nm
12
49 Nm
6
7
9.8 Nm
1
8.8 Nm
22 Nm
23 Nm
5
4
13 Nm
8
9
2
49 Nm
3
25 Nm
10
49 Nm
22 Nm
Removal steps
1. Oil level gauge
2. Oil level gauge guide
3. O-ring
4. Drive belt
5. Water pump pulley
6. Alternator
7. Alternator brace
E Mitsubishi Motors Corporation
Aug. 1999
8. Idler pulley bracket
(Vehicle for Hong Kong)
9. Idler pulley
(Vehicle for Hong Kong)
10. Crankshaft pulley
11. Ignition coil
12. Spark plug
PWEE9616-B
Revised
11A-3-4
4G6 ENGINE (E - W) - Alternator and Ignition System
INSTALLATION SERVICE POINTS
"AA CAMSHAFT POSITION SENSOR SUPPORT
INSTALLATION
(1) Apply a 3 mm bead of form-in-place gasket (FIPG) to
the area shown.
Specified sealant:
Mitsubishi Genuine
equivalent
Part
No.
MD970389
or
"BA DISTRIBUTOR ASSEMBLY INSTALLATION
(1) Turn the crankshaft to bring No. 1 cylinder to the top
dead center on compression stroke.
(2) Align the mating marks on the distributor housing with
that of the coupling key.
Stud bolt
E Mitsubishi Motors Corporation
Aug. 1998
(3) Install the distributor assembly on the engine while aligning
the stud bolt used for securing the distributor with the
slot in the mounting flange of the distributor.
PWEE9616-A
Added
11A-3a-1
4G6 ENGINE (E - W) - Intake Manifold (GDI)
3a. INTAKE MANIFOLD (GDI)
REMOVAL AND INSTALLATION (SPACE WAGON)
8.8 Nm
8.8 Nm
3
2
11 Nm
11 Nm
8.8 Nm
16
14
4
11 Nm
12
5
11
13
7
1
23 Nm
17
23 Nm
6
8.8 Nm
19 Nm
18
15
10
11 Nm
19
30 Nm
19 Nm
9
8.8 Nm
30 Nm
8
Removal steps
1. Vacuum pipe and hose
(1999 model vehicles for Hong
Kong)
2. Solenoid valve (1999 model vehicles for Hong Kong)
3. Vacuum pipe and hose
(Vehicles for Europe and 2000
model vehicles for Hong Kong)
4. Solenoid valve
(Vehicles for Europe and 2000
model vehicles for Hong Kong)
5. Vacuum pipe
6. Throttle body
E Mitsubishi Motors Corporation
Aug. 1999
"DA 7. Throttle body gasket
"CA 8. Intake manifold stay
"BA 9. Air intake plenum resonator
10. Gasket
11. Water hose
12. EGR valve
13. Gasket
"AA 14. Hose clamp
"AA 15. EGR support
"AA 16. Gasket
17. Gasket
18. Intake manifold
19. Gasket
PWEE9616-B
Revised
11A-3a-2
4G6 ENGINE (E - W) - Intake Manifold (GDI)
REMOVAL AND INSTALLATION (GALANT)
8.8 Nm
8.8 Nm
1
2
8
11 Nm
9
11
23 Nm
3
4
13
19 Nm
23 Nm
5
10
14
15
12
16
7
19 Nm
30 Nm
11 Nm
8.8 Nm
6
Removal steps
1. Vacuum pipe and hose
2. Solenoid valve
3. Throttle body
"DA 4. Throttle body gasket
"CA 5. Intake manifold stay
"BA 6. Air intake plenum resonator
7. Gasket
8. Water hose
E Mitsubishi Motors Corporation
Aug. 1999
9.
10.
"AA 11.
"AA 12.
"AA 13.
14.
15.
16.
PWEE9616-B
EGR valve
Gasket
Hose clamp
EGR support
Gasket
Gasket
Intake manifold
Gasket
Revised
4G6 ENGINE (E - W) - Intake Manifold (GDI)
Intake manifold side
Cylinder head side
Hose clamp
11A-3a-3
INSTALLATION SERVICE POINTS
"AA EGR SUPPORT / HOSE CLAMP / GASKET
INSTALLATION
(1) Install the gasket, EGR support and hose clamp to the
cylinder head in that order and tighten the fasteners
temporarily.
(2) Install the EGR support assembly to the intake manifold
with the gasket attached on the mating surface, and tighten
the fasteners to the specified torque.
(3) Tighten the fasteners on the cylinder head side to the
specified torque.
"BA AIR INTAKE PLENUM RESONATOR
INSTALLATION
(1) Install the mounting bolts on the throttle body side without
fail.
"CA INTAKE MANIFOLD STAY INSTALLATION
(1) Tighten the fasteners to the specified torque after
confirming that the intake manifold stay is in close contact
with the air intake plenum resonator and the cylinder
block.
Intake
manifold
stay
Air intake
plenum
resonator
"DA THROTTLE BODY GASKET INSTALLATION
(1) Position the projection as shown in the illustration.
Projection
E Mitsubishi Motors Corporation
Aug. 1999
PWEE9616-B
Added
11A-4-1
4G6 ENGINE (E - W) - Timing Belt
4. TIMING BELT
REMOVAL AND INSTALLATION (SOHC)
20
45 Nm
18
45 Nm
17
16
14
15
23
18 Nm
5
88 Nm
13
19
22
7
21
9 Nm
22 Nm
1
48 Nm
49 Nm
49 Nm
6
14 Nm
4
3
12
23 Nm
10
11
8
54 Nm
9
35 Nm
118 Nm
11 Nm
2
9 Nm
AA" "KA
"JA
"IA
AC" "HA
AD" "GA
Removal steps
1. Timing belt front upper cover
2. Timing belt front lower cover
3. Power steering bracket
4. Crankshaft position sensor
(Multipoint fuel injection)
5. Timing belt
6. Tensioner pulley
7. Tensioner arm
8. Auto tensioner
9. Idler pulley
10. Oil pump sprocket
11. Crankshaft bolt
E Mitsubishi Motors Corporation
Aug. 1999
AE"
AF" "FA
AG" "EA
"DA
AH"
"CA
AI" "AA
PWEE9616-B
12.
13.
14.
15.
16.
17.
18.
19.
20.
21.
22.
23.
Crankshaft sprocket
Flange (Multipoint fuel injection)
Flange (Carburetor)
Tensioner “B”
Timing belt “B”
Counterbalance shaft sprocket
Spacer
Crankshaft sprocket “B”
Engine support bracket
Camshaft sprocket bolt
Camshaft sprocket
Timing belt rear cover
Revised
11A-4-2
4G6 ENGINE (E - W) - Timing Belt
REMOVAL AND INSTALLATION (GDI)
21
25
22
1
3.4 Nm
6
7
48 Nm
23
26
24
27
23 Nm
8
2
23 Nm
12
11 Nm
13
31
11 Nm
118 Nm
11 Nm
49 Nm
9 Nm
32
5
30
45 Nm
18
3
17
4
18 Nm
88 Nm
28
15
29
10
33
20
48 Nm
8.8 Nm
19
14
9
16
49 Nm
11
54 Nm
AB" "LA
"JA
"IA
AC" "HA
AD" "GA
AE"
AF" "FA
AG" "EA
Removal steps
1. Front upper cover
2. Front lower cover
3. Power steering pump bracket stay
4. Power steering bracket
5. Timing belt
6. Tensioner pulley
7. Tensioner arm
8. Auto tensioner
9. Idle pulley
10. Crankshaft position sensor
11. Oil pump sprocket
12. Crankshaft bolt
13. Crankshaft sprocket
14. Flange
15. Tensioner B
16. Timing belt B
17. Counterbalance shaft sprocket
E Mitsubishi Motors Corporation
Aug. 1999
"DA 18.
19.
20.
21.
22.
23.
24.
25.
26.
27.
"CA 28.
AJ" "BA 29.
30.
31.
32.
33.
AH"
PWEE9616-B
Spacer
Crankshaft sprocket B
Crankshaft key
Breather hose
PCV hose
PCV valve
PCV valve gasket
Oil filler cap
Rocker cover
Rocker cover gasket
Engine support bracket
Camshaft sprocket bolt
Camshaft sprocket
Timing belt rear right cover
Timing belt rear left upper cover
Timing belt rear left lower cover
Revised
4G6 ENGINE (E - W) - Timing Belt
11A-4-3
REMOVAL SERVICE POINTS
AA" TIMING BELT REMOVAL
(1) Mark belt running direction for reinstallation.
NOTE
(1) Water or oil on the belt shorten its life drastically,
so the removed timing belt, sprocket, and tensioner
must be free from oil and water. These parts should
not be washed. Replace parts if seriously
contaminated.
(2) If there is oil or water on each part, check front case
oil seals, camshaft oil seal and water pump for leaks.
AB" TIMING BELT REMOVAL
(1) If the timing belt is to be reused, chalk an arrow mark
on the back surface of the belt so that the belt can be
reinstalled in the same direction.
(2) Place the exhaust camshaft sprocket in a position where
the timing mark for No. 1 cylinder is positioned about
one tooth before the top dead center of the compression
stroke.
Caution
D The camshaft sprocket on the exhaust side can
turn very easily because of the valve spring
tension. Use care not to allow your fingers to get
caught by the sprocket.
Timing mark
(3) Loosen the lock nut of the tensioner pulley, then remove
the timing belt.
AC" OIL PUMP SPROCKET REMOVAL
(1) Remove the plug on the left side of cylinder block.
(2) Insert a screwdriver (shank diameter 8 mm) to block the
counterbalance shaft.
(3) Remove the nut.
(4) Remove the oil pump sprocket.
E Mitsubishi Motors Corporation
Aug. 1998
PWEE9616-A
Revised
11A-4-4
4G6 ENGINE (E - W) - Timing Belt
AD" CRANKSHAFT BOLT LOOSENING
(1) Hold the drive plate with the special tool as shown.
(2) Remove the crankshaft bolt.
AE" CRANKSHAFT SPROCKET REMOVAL
(1) If it is difficult to remove the sprocket, use the special
tool.
AF" TIMING BELT “B” REMOVAL
(1) 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.
6EN1322
MD998785
E Mitsubishi Motors Corporation
Aug. 1998
NOTE
(1) Water or oil on the belt shortens its life drastically,
so the removed timing belt, sprocket, and tensioner
must be free from oil and water. These parts should
not be washed. Replace parts if seriously
contaminated.
(2) If there is oil or water on each part check front case
oil seals, camshaft oil seal and water pump for leaks.
AG" COUNTERBALANCE SHAFT SPROCKET
REMOVAL
(1) Set the special tool as shown to prevent the
counterbalance shaft sprocket from turning together.
(2) Loosen the bolt and remove the sprocket.
PWEE9616-A
Revised
4G6 ENGINE (E - W) - Timing Belt
11A-4-5
AH" CRANKSHAFT SPROCKET “B” REMOVAL
(1) If it is difficult to remove the sprocket, use the special
tool.
AI" CAMSHAFT SPROCKET BOLT LOOSENING
(1) Using the special tools shown in the illustration, lock the
camshaft sprocket in position.
(2) Loosen the camshaft bolt.
AJ" CAMSHAFT SPROCKET BOLT LOOSENING
(1) Use a wrench to hold the hexagonal part of the camshaft,
and then remove the camshaft sprocket mounting bolt.
INSTALLATION SERVICE POINTS
"AA CAMSHAFT SPROCKET BOLT TIGHTENING
(1) Using the special tools shown in the illustration, lock the
camshaft sprocket in position.
(2) Tighten the camshaft sprocket bolt to the specified torque.
"BA CAMSHAFT SPROCKET BOLT TIGHTENING
(1) Using a wrench, hold the camshaft at its hexagon and
tighten the bolt to the specification.
E Mitsubishi Motors Corporation
Aug. 1998
PWEE9616-A
Revised
11A-4-6
4G6 ENGINE (E - W) - Timing Belt
"CA ENGINE SUPPORT BRACKET INSTALLATION
(1) Coat the bolts illustrated with sealant before tightening.
Specified sealant: 3M ATD Part No. 8660 or equivalent
"DA SPACER INSTALLATION
(1) Install the spacer with the chamfered end toward the
oil seal.
Sharp
edge
Counterbalance
shaft
MD998785
Timing
marks
(on front
case)
Timing
marks
"EA COUNTERBALANCE SHAFT SPROCKET
INSTALLATION
(1) Install the counterbalance shaft sprocket and screw the
bolt.
(2) Install special tool MD998785 as shown in the illustration
to lock the counterbalance shaft.
(3) Tighten the bolt, and then remove the special tool.
"FA TIMING BELT “B” INSTALLATION
(1) Align timing marks on the crankshaft sprocket “B” and
counterbalance shaft sprocket with the marks on the front
case respectively.
(2) Install the timing belt “B” on the crankshaft sprocket “B”
and counterbalance shaft sprocket. There should be no
slack on the tension side.
(3) Make sure that the relationship between the tensioner
pulley center and the bolt center is as shown in the
illustration.
E Mitsubishi Motors Corporation
Aug. 1998
PWEE9616-A
Revised
4G6 ENGINE (E - W) - Timing Belt
11A-4-7
(4) Move the tensioner “B” in the direction of arrow while
lifting with a finger to give a sufficient tension to the tension
side of timing belt. In this condition, tighten bolt to secure
tensioner “B”. When the bolt is tightened, use care to
prevent shaft from turning together. If shaft is turned
together, belt will be overtensioned.
(5) Check to ensure that timing marks on sprockets and front
case are in alignment.
(6) Press with index finger the center of span on the tension
side of timing belt “B”. The bolt must deflect 5 - 7 mm.
"GA CRANKSHAFT BOLT TIGHTENING
(1) Using the special tool, hold the flywheel or drive plate.
(2) Install the crankshaft pulley in position.
"HA OIL PUMP SPROCKET INSTALLATION
(1) Insert a Phillips screwdriver (shank diameter 8 mm shaft)
through the plug hole on the left side of the cylinder
block to block the left counterbalance shaft.
(2) Install the oil pump sprocket.
(3) Apply a proper amount of engine oil to the bearing surfaces
of the nuts.
(4) Tighten the nuts to the specified torque.
6EN0564
B
"IA AUTO TENSIONER INSTALLATION
(1) If the auto tensioner rod is in its fully extended position,
reset it as follows.
(2) Clamp the auto-tensioner in the vise with soft jaws.
(3) Push in the rod little by little with the vise until the set
hole A in the rod is aligned with the hole B in the cylinder.
A
6AE0049
E Mitsubishi Motors Corporation
Aug. 1998
PWEE9616-A
Revised
11A-4-8
4G6 ENGINE (E - W) - Timing Belt
(4) Insert a wire (1.4 mm in diameter) into the set holes.
(5) Unclamp the auto tensioner from the vise.
6AE0050
(6) Install the auto tensioner to front case and tighten to
the specified torque.
Caution
D Leave the wire installed in the auto tensioner.
6EN0350
"JA TENSIONER PULLEY INSTALLATION
(1) Install the tensioner pulley in such direction that its two
small holes are arranged vertically.
Small holes
6EN1323
"KA TIMING BELT INSTALLATION
(1) Check that the timing belt tensioner and spring have been
installed in position. (See "JA)
(2) Align timing mark on camshaft sprocket with timing mark
on cylinder head.
(3) Align timing mark on crankshaft sprocket with timing mark
on front case.
E Mitsubishi Motors Corporation
Aug. 1998
PWEE9616-A
Revised
4G6 ENGINE (E - W) - Timing Belt
11A-4-9
(4) Align the timing mark on oil pump sprocket with its mating
mark.
Oil pump
sprocket
timing marks
6EN1327
Plug
Screwdriver
(5) Remove the plug on cylinder block and insert a Phillips
screwdriver (shank diameter 8 mm) through the hole
(Engine with counterbalance shafts).
If it can be inserted as deep as 60 mm or more, the
timing marks are correctly aligned. If the inserted depth
is only 20 - 25 mm, turn the oil pump sprocket one turn
and realign timing marks. Then check to ensure that the
screwdriver can be inserted 60 mm or more. Keep the
screwdriver inserted until installation of timing belt is
finished.
6EN1026
(6) Install the timing belt on the crankshaft sprocket, idler
pulley, camshaft sprocket, and tensioner pulley in that
order.
(7) Lift up the tensioner pulley in the direction of arrow and
tighten the center bolt.
(8) Check that all timing marks are lined up.
(9) Remove the screwdriver inserted in step (5) and fit the
plug.
(10)Give the crankshaft a quarter counterclockwise turn. Then,
turn it clockwise until the timing marks are lined up again.
6EN0899
(11)Install the special tools, Socket Wrench and Torque
Wrench, on the tensioner pulley, and loosen the tensioner
pulley center bolt.
MD998767
NOTE
If the special tool is not available, use a commercially
available torque wrench that is capable of measuring
0 - 5 Nm.
6EN0900
E Mitsubishi Motors Corporation
Aug. 1998
(12)Torque to 3.5 Nm with the torque wrench.
(13)Holding the tensioner pulley with the special tool and
torque wrench, tighten the center bolt to specification.
PWEE9616-A
Revised
11A-4-10
4G6 ENGINE (E - W) - Timing Belt
(14)After giving two clockwise turns to the crankshaft, let
it alone for approx. 15 minutes. Then, make sure that
the auto tensioner setting wire moves freely.
NOTE
If the wire does not move freely, repeat step (10) above
until it moves freely.
(15)Remove the auto tensioner setting wire.
(16)Measure the distance “A” (between the tensioner arm
and auto tensioner body).
Standard value: 3.8 - 4.5 mm
Timing mark
"LA TIMING BELT INSTALLATION
(1) Place the exhaust side camshaft sprocket in a position
where its timing mark is one tooth offset from the timing
mark on the rocker cover in the counterclockwise direction.
NOTE
Even if the timing marks on the sprocket and the rocker
cover are brought into alignment, the exhaust camshaft
is forced back by the valve spring tension. It is stabilized
at a position one tooth before the timing mark.
Timing mark
(2) Align the timing mark on the intake side camshaft sprocket
with that on the rocker cover.
NOTE
Even if the timing marks on the sprocket and the cover
are brought into alignment, the intake camshaft is forced
to turn one tooth in the clockwise direction by the valve
spring tension and stabilized there.
(3) Place the timing mark on the crankshaft sprocket one
tooth this side from the mated timing mark as in the case
of the camshaft sprocket.
E Mitsubishi Motors Corporation
Aug. 1998
PWEE9616-A
Added
4G6 ENGINE (E - W) - Timing Belt
11A-4-11
(4) Align the timing mark on oil pump sprocket with its mating
mark.
Oil pump
sprocket
timing marks
6EN1327
Plug
Screwdriver
(5) Remove the plug on cylinder block and insert a Phillips
screwdriver (shank diameter 8 mm) through the hole
(Engine with counterbalance shafts).
If it can be inserted as deep as 60 mm or more, the
timing marks are correctly aligned. If the inserted depth
is only 20 - 25 mm, turn the oil pump sprocket one turn
and realign timing marks. Then check to ensure that the
screwdriver can be inserted 60 mm or more. Keep the
screwdriver inserted until installation of timing belt is
finished.
6EN1026
(6) Remove the Phillips screwdriver. Place the oil pump
sprocket in a position where its timing mark is one tooth
offset from the mated timing mark in the counterclockwise
direction.
Timing mark
6EN1327
(7) Fit the timing belt over the exhaust side camshaft sprocket,
and secure it at the illustrated position using a paper
clip.
(8) Turn the intake side camshaft sprocket as shown to a
position where its timing mark is one tooth offset from
the mated timing mark in the counterclockwise direction.
Then, fit the timing belt over the sprocket and secure
it with a paper clip.
NOTE
The intake camshaft will be turned a little clockwise by
the valve spring tension and stabilized in position even
if the belt is clipped at one tooth offset position.
E Mitsubishi Motors Corporation
Aug. 1998
PWEE9616-A
Added
11A-4-12
4G6 ENGINE (E - W) - Timing Belt
(9) Check to ensure that the timing marks on the intake
camshaft sprocket side are in alignment when the exhaust
camshaft sprocket is turned clockwise to align the timing
marks.
17 cogs
NOTE
The timing belt span between the intake and exhaust
sprockets will have 17 cogs.
Timing mark
(10)Fit the timing belt over the idler pulley, oil pump sprocket
and crankshaft sprocket in this order.
NOTE
Be careful that the belt does not become slack.
Crankshaft
sprocket
Oil pump
sprocket
(11)Fit the timing belt over the tensioner pulley.
NOTE
When fitting the timing belt over the tensioner pulley,
turn the intake side camshaft sprocket a little
counterclockwise, as this will facilitate the work.
Crankshaft
sprocket
MD998767
(12)Turn the crankshaft pulley a little in the illustrated direction
to pull up the timing belt at the idler pulley side.
(13)Check to ensure that the timing marks on the crankshaft
sprocket, oil pump sprocket and exhaust camshaft
sprocket are all offset one tooth from the corresponding
timing marks in the counterclockwise direction.
(14)Using the special tool, turn the tensioner pulley in the
illustrated direction to strain the timing belt. Then, secure
the tensioner temporarily by tightening the retaining bolt
lightly.
NOTE
There must be no slack in the timing belt between the
intake and exhaust camshafts.
(15)Turn the crankshaft to align the timing mark with the mark
for No. 1 cylinder top dead center in the compression
stroke.
E Mitsubishi Motors Corporation
Aug. 1998
PWEE9616-A
Added
4G6 ENGINE (E - W) - Timing Belt
11A-4-13
(16)Set the special tool as shown and screw it in up to the
position where the wire inserted in the auto-tensioner
when installing it can be moved lightly.
MD998738
(17)Loosen the retaining bolt of the tensioner pulley.
Caution
D Loosening the retaining bolt can cause the intake
and exhaust camshafts to turn, resulting in
slackened timing belt. Use care that the timing
belt does not come off the sprockets at this time.
(18)Pull up the slack of the timing belt by turning the tensioner
in illustrated direction using the special tool and a torque
wrench (0 - 5 Nm).
(19)From this position, turn back the tensioner until the torque
wrench reading becomes 3.5 Nm, then secure it by
tightening the retaining bolt.
(20)Remove the special tool attached in step (16).
(21)Rotate the crankshaft clockwise 2 turns. Then, leave it
intact 15 minutes.
(22)Check to see that the wire inserted when installing the
auto-tensioner can be pulled out lightly. If it can be pulled
out lightly, the timing belt is being tensioned properly.
If so, remove the wire. In addition, check that the rod
protrusion from the auto-tensioner meets the standard
value, which is also an indication of properly tensioned
timing belt.
MD998767
Standard value: 3.8 - 4.5 mm
(23)If the wire cannot be removed with a light force, repeat
steps (16) through (21) until the proper belt tensioner
is obtained.
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.
E Mitsubishi Motors Corporation
Aug. 1998
PWEE9616-A
Added
11A-4-14
4G6 ENGINE (E - W) - Timing Belt
(2)
(3)
(4)
(5)
Cracks
Cracks
Cracks
Cracks
on rubber back.
or peeling of canvas.
on rib root.
on belt sides.
(6) Abnormal wear of belt sides. The sides are normal if
they are sharp as if cut by a knife.
(7) Abnormal wear on teeth.
(8) Missing tooth.
12 mm
AUTO TENSIONER
(1) Check the auto tensioner for possible leaks and replace
as necessary.
(2) Check the rod end for wear or damage and replace as
necessary.
(3) Measure the rod protrusion. If it is out of specification,
replace the auto tensioner.
Standard value: 12 mm
6EN0161
98 to 196 N
Movement
(4) Press the rod with a force of 98 to 196 N and measure
its protrusion.
(5) If the measured value is 1 mm or more shorter than the
value obtained in step (3), replace the auto tensioner.
6EN1033
E Mitsubishi Motors Corporation
Aug. 1998
PWEE9616-A
Added
11A-4a-1
4G6 ENGINE (E - W) - Exhaust Manifold (GDI)
4a. EXHAUST MANIFOLD (GDI)
REMOVAL AND INSTALLATION
11 Nm
29 Nm
5
4
49 Nm
29 Nm
3
13 Nm
49 Nm
13 Nm
2
Removal steps
1. Exhaust manifold
2. Exhaust manifold
3. Exhaust manifold
4. Exhaust manifold
5. Engine hanger
E Mitsubishi Motors Corporation
Aug. 1998
1
cover (Vehicle for Europe)
(Vehicle for Europe)
(Vehicle for Hong Kong)
gasket
PWEE9616-A
Added
11A-5-1
4G6 ENGINE (E - W) - Fuel and Emission Control Parts
5. FUEL AND EMISSION CONTROL PARTS
REMOVAL AND INSTALLATION <CARBURETOR>
17 Nm
5
22 Nm
2
6
23 Nm
4
7
8
1
3
Removal steps
1. Fuel hose
2. Fuel hose
3. Fuel vapor separator
4. Water hose
5. Carburetor
6. Gasket
7. EGR valve (For GCC)
8. Gasket (For GCC)
E Mitsubishi Motors Corporation
Dec. 1996
PWEE9616
11A-5-2
4G6 ENGINE (E - W) - Fuel and Emission Control Parts
REMOVAL AND INSTALLATION <MULTIPOINT FUEL INJECTION - GALANT>
3
5
22 Nm
12 Nm
9
18 Nm
4
9 Nm
8
12
13
14
1
11
10
2
7
6
Removal steps
1. Throttle body
"CA 2. Throttle body gasket
3. EGR valve (With EGR valve)
4. Cover (Without EGR valve)
5. EGR valve gasket
6. Injectors and delivery pipe
7. Insulator
E Mitsubishi Motors Corporation
Aug. 1998
"BA 8.
9.
10.
"AA 11.
12.
13.
14.
PWEE9616-A
Fuel pressure regulator
O-ring
Insulator
Injectors
O-ring
Grommet
Delivery pipe
Revised
11A-5-3
4G6 ENGINE (E - W) - Fuel and Emission Control Parts
REMOVAL AND INSTALLATION
<MULTIPOINT FUEL INJECTION - SPACE WAGON>
22 Nm
6
12 Nm
4
5
15
13
14
10
9
18 Nm
3
1
12
11
2
9 Nm
8
7
Removal steps
1. Throttle body
"CA 2. Throttle body gasket
3. EGR valve
4. EGR valve gasket
5. Fuel hose
6. Fuel return pipe
7. Injectors and delivery pipe
8. Insulator
E Mitsubishi Motors Corporation
Aug. 1998
"BA 9.
10.
11.
"AA 12.
13.
14.
15.
PWEE9616-A
Fuel pressure regulator
O-ring
Insulator
Injectors
O-ring
Grommet
Delivery pipe
Revised
11A-5-4
4G6 ENGINE (E - W) - Fuel and Emission Control Parts
INSTALLATION SERVICE POINTS
"AA INJECTORS INSTALLATION
(1) Before installing an injector, the rubber O-ring must be
lubricated with a drop of clean engine oil to aid in
installation.
(2) Install injector top end. Be careful not to damage O-ring
during installation.
Grommet
O-ring
1EN0388
"BA FUEL PRESSURE REGULATOR INSTALLATION
(1) Apply a small amount of new engine oil to the O-ring.
Insert the fuel pressure regulator into the delivery pipe
being careful not to damage the O-ring.
Caution
D Be sure not to let engine oil get into the delivery
pipe.
(2) Check that the fuel pressure regulator turns smoothly.
If it does not turn smoothly, the O-ring may be trapped.
Remove the fuel pressure regulator and check the O-ring
for damage, and then re-insert it into the delivery pipe
and check once again.
GALANT
SPACE WAGON
Projection
Projection
E Mitsubishi Motors Corporation
Aug. 1998
"CA GASKET INSTALLATION
(1) Position the projection as shown in the illustration.
PWEE9616-A
Added
11A-5a-1
4G6 ENGINE (E - W) - Fuel Part (GDI)
5a. FUEL PART (GDI)
REMOVAL AND INSTALLATION (1999 MODEL SPACE WAGON)
26
8.8 Nm
15
6
18 Nm
8.8 Nm
11 Nm
8.8 Nm
2
14
17
8
3
11 Nm
18
11 Nm
7
1
16
11
10
9
8.8 Nm
4.9 Nm ®
17 Nm ± 2 Nm
19
22
21
20
12
18 Nm
11 Nm
4
13
5
23
30
37
34
35
36
22 Nm
24
32
27
33
28
23 Nm
31
29
25
11 Nm
38
E Mitsubishi Motors Corporation
Aug. 1999
PWEE9616-B
Revised
11A-5a-2
"FA
"FA
"EA
"EA
4G6 ENGINE (E - W) - Fuel Part (GDI)
Removal steps
1. Fuel hose
2. Fuel low pressure pipe
3. O-ring
4. Fuel pump return nipple
5. O-ring
6. Clamp A
7. Fuel pipe bracket
8. Fuel feed pipe
9. Backup ring
10. O-ring
11. Backup ring
12. Fuel pump
13. O-ring
14. Harness bracket
15. Fuel return pipe
16. Backup ring
17. O-ring
18. Backup ring
19. Fuel high pressure regulator
E Mitsubishi Motors Corporation
Aug. 1999
"DA 20.
21.
22.
"CA 23.
24.
25.
26.
27.
28.
"BA 29.
30.
31.
32.
"AA 33.
"AA 34.
"AA 35.
"AA 36.
37.
38.
PWEE9616-B
Fuel pressure sensor
Backup ring
O-ring
Pump camshaft case
O-ring
O-ring
Injector harness
Washer
Injector holder
Delivery pipe and injector assembly
Insulator
Injector washer
Injector
Corrugated washer
Backup ring
O-ring
Backup ring
Delivery pipe
Engine hanger
Revised
11A-5a-2a
4G6 ENGINE (E - W) - Fuel Part (GDI)
REMOVAL AND INSTALLATION (2000 MODEL SPACE WAGON and GALANT)
30
8.8 Nm
15
6
18 Nm
8.8 Nm
11 Nm
8.8 Nm
2
14
17
8
3
11 Nm
18
7
11 Nm
1
16
11
10
9
8.8 Nm
26
19
4.9 Nm ®
17 Nm ± 2 Nm
25
24
23
18 Nm
12
11 Nm
22
4
13
21
20
5
27
34
41
38
39
40
18 Nm
22 Nm
28
36
31
37
32
23 Nm
35
33
29
11 Nm
42
E Mitsubishi Motors Corporation
Aug. 1999
PWEE9616-B
Added
11A-5a-2b
"FA
"FA
"EA
"EA
"DA
4G6 ENGINE (E - W) - Fuel Part (GDI)
Removal steps
1. Fuel hose
2. Fuel low pressure pipe
3. O-ring
4. Fuel pump return nipple
5. O-ring
6. Clamp A
7. Fuel pipe bracket
8. Fuel feed pipe
9. Backup ring
10. O-ring
11. Backup ring
12. Fuel pump
13. O-ring
14. Harness bracket
15. Fuel return pipe
16. Backup ring
17. O-ring
18. Backup ring
19. Fuel high pressure regulator
20. Fuel pressure sensor
(GALANT and SPACE WAGON for
Hong Kong)
21. Backup ring (GALANT and SPACE
WAGON for Hong Kong)
22. O-ring (GALANT and SPACE
WAGON for Hong Kong)
E Mitsubishi Motors Corporation
Aug. 1999
PWEE9616-B
"DA
"CA
"BA
"AA
"AA
"AA
"AA
23. Flange
(SPACE WAGON for Europe)
24. Fuel pressure sensor
(SPACE WAGON for Europe)
25. Backup ring
(SPACE WAGON for Europe)
26. O-ring
(SPACE WAGON for Europe)
27. Pump camshaft case
28. O-ring
29. O-ring
30. Injector harness
31. Washer
32. Injector holder
33. Delivery pipe and injector assembly
34. Insulator
35. Injector washer
36. Injector
37. Corrugated washer
38. Backup ring
39. O-ring
40. Backup ring
41. Delivery pipe
42. Engine hanger
Added
4G6 ENGINE (E - W) - Fuel Part (GDI)
11A-5a-3
INSTALLATION SERVICE POINTS
"AA BACKUP RING / CORRUGATED WASHER
INSTALLATION
(1) Attach the backup ring and O-ring to the injector. The
thicker backup ring must be so installed that the inside
cut surface is directed as shown in the illustration.
Cut surface
Backup ring
(2) Coat the corrugated washer with white vaseline and install
it to the injector as shown.
Caution
D Always replace the corrugated washer with new
one. Reused corrugated washer can cause fuel
or gas leaks.
Corrugated washer
Mating marks
Injector
gasket
Insulator
"BA DELIVERY PIPE AND INJECTOR ASSEMBLY
INSTALLATION
(1) Lubricate O-ring in the injector with spindle oil gasoline.
(2) Insert the injector straight into the injector mounting hole
in the delivery pipe.
(3) Turn the injector clockwise and counterclockwise. If it
dose not rotate smoothly, remove it to check for damaged
O-ring. Damaged O-ring must be replaced with a new
one. Reinstall the injector and check for smooth rotation
again.
(4) Align the mating mark on the injector with that on the
delivery pipe.
(5) Install the injector gaskets and insulators on the cylinder
head. The insulator can drop off easily. Apply vaseline
to it before installation so that it may be held in position.
(6) Install the delivery pipe and injector assembly onto the
cylinder head, tighten the fasteners temporarily.
(7) Install the injector holders and the washers to the assembly
and tighten the fasteners to the specified torque.
Caution
D Strictly observe the specified torque.
(8) Tighten the fasteners of the delivery pipe and injector
assembly to the specified torque in the order given in
the illustration.
3
1
E Mitsubishi Motors Corporation
2
Aug. 1998
4
PWEE9616-A
Added
11A-5a-4
4G6 ENGINE (E - W) - Fuel Part (GDI)
Grooved
Coupling
Camshaft
O-ring
"CA PUMP CAMSHAFT CASE INSTALLATION
(1) Lubricate the O-ring (smaller one for oil passage) with
vaseline and install it in the pump camshaft case.
(2) Apply small amount of engine oil to the O-ring (larger
one) in the case.
(3) Install the pump camshaft case onto the cylinder head
while aligning its coupling with the groove in the camshaft
end.
NOTE
The key of the coupling and the groove in the camshaft
end are both arranged offset with respect to the camshaft
center.
(4) Tighten the pump camshaft case mounting bolts to the
specified torque.
Cut surface
"DA FUEL PRESSURE SENSOR INSTALLATION
(1) Install the backup ring to the fuel pressure sensor with
its inside cut surface in the illustrated direction.
(2) Install the fuel pressure sensor straight into the fuel
pressure regulator with labeled surface upward.
(3) Tighten the fuel pressure sensor mounting bolt to the
specified torque.
Backup ring
Backup ring
(Mountable in
eitherdirection)
O-ring
Cut surface
Backup ring
E Mitsubishi Motors Corporation
Aug. 1998
"EA FUEL HIGH PRESSURE REGULATOR / FUEL
RETURN PIPE INSTALLATION
(1) Install the fuel high pressure regulator on the pump
camshaft case and tighten the 3 bolts lightly (with
somewhat larger torque than finger tight). Tightening to
the specification is to be carried out in the step described
in "FA.
(2) Fit the backup rings and the O-ring on both ends of the
fuel return pipe. Note that the larger backup ring must
be installed with the inside cut surface in the direction
shown in the illustration.
(3) Lubricate the O-rings on both ends of the pipe with spindle
oil or gasoline.
(4) Insert the fuel return pipe ends straight in the respective
mounting holes of the pressure regulator and the delivery
pipe. Be sure to insert the pipe fully to the stop using
care not to twist it.
(5) Tighten the bolts at both ends of the pipe to the specified
torque.
PWEE9616-A
Added
4G6 ENGINE (E - W) - Fuel Part (GDI)
Backup ring
(Mountable in
either direction)
O-ring
Cut surface
Backup ring
3
1
4
11A-5a-5
"FA FUEL PUMP / FUEL FEED PIPE INSTALLATION
(1) Insert the fuel pump into the mounting hole in the pump
camshaft case, and secure it temporarily with 4 bolts
(tighten somewhat with a larger torque than finger tight).
(2) Fit the backup rings and the O-ring on both ends of the
feed pipe. Note that the larger backup ring must be
installed with the inside cut surface in the direction shown
in the illustration.
(3) Lubricate the O-rings on both ends of the pipe with spindle
oil or gasoline.
(4) Insert the fuel feed pipe ends straight in the respective
mounting holes of the fuel and the delivery pipe. Be sure
to insert the pipe fully to the stop using care not to twist
it.
(5) Tighten the bolts at ends of the pipe to the specified
torque.
(6) Tighten the mounting bolts of the fuel pressure regulator
to the specified torque.
(7) Using a torque wrench having the minimum scale of 0.5
Nm, tighten the fuel pump mounting bolts in the following
order.
1) Tighten the bolts to 4.9 Nm in the order given in
the illustration.
2) Tighten the bolts to 17 Nm in the order given in the
illustration. The torque variation among 4 bolts must
be within 2 Nm.
Caution
D Strictly observe the specified tightening torque.
Deviation from the specification can cause
problems such as leakage or the like.
2
(8) Clamp the fuel return pipe and feed pipe using the fuel
pipe bracket and clamp A, and tighten them lightly.
(9) Secure the fuel pipe bracket to the cam cap temporarily.
(10)Tighten the bolts which are securing the pipes temporarily
to the specified torque.
(11)Tighten the bolts on the beam cam shaft side which have
been temporarily tightened to the specified torque.
E Mitsubishi Motors Corporation
Aug. 1998
PWEE9616-A
Added
11A-6-1
4G6 ENGINE (E - W) - Water Pump and Intake Manifold
6. WATER PUMP AND INTAKE MANIFOLD
REMOVAL AND INSTALLATION <CARBURETOR>
13 Nm
24 Nm
1
6
15
11 Nm
3
4
5
13 Nm
14
20 Nm
8
2
7
16
8
31 Nm
11
17
12 Nm
14 Nm
10
12
9
13
14 Nm
"CA
"BA
"AA
"AA
Removal steps
1. Water hose
2. Water hose
3. Engine coolant temperature gauge
unit
4. Water inlet fitting
5. Thermostat
6. Thermostat housing
7. Water inlet pipe
8. O-ring
E Mitsubishi Motors Corporation
Dec. 1996
9.
10.
11.
12.
13.
14.
15.
16.
17.
PWEE9616
Water pump
Water pump gasket
Oil level gauge
Oil level gauge guide
O-ring
Intake manifold stay
Intake manifold
Intake manifold gasket
Engine hanger
11A-6-2
4G6 ENGINE (E - W) - Water Pump and Intake Manifold
REMOVAL AND INSTALLATION <MULTIPOINT FUEL INJECTION - GALANT>
13 Nm
24 Nm
16
7
1
11 Nm
4
5
17
6
19 Nm
13 Nm
2
9
15
29 Nm
8
3
9
31 Nm
19
23 Nm
12
18
11 Nm
14 Nm
11
13
10
14
14 Nm
"DA
"CA
"BA
"AA
"AA
Removal steps
1. Water hose
2. Water hose
3. Engine coolant temperature sensor
4. Engine coolant temperature gauge
unit
5. Water inlet fitting
6. Thermostat
7. Thermostat housing
8. Water inlet pipe
9. O-ring
E Mitsubishi Motors Corporation
Aug. 1998
PWEE9616-A
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
Water pump
Water pump gasket
Oil level gauge
Oil level gauge guide
O-ring
Intake manifold stay
Intake manifold
Intake manifold gasket
Engine hanger
Detonation sensor
Revised
11A-6-3
4G6 ENGINE (E - W) - Water Pump and Intake Manifold
REMOVAL AND INSTALLATION
<MULTIPOINT FUEL INJECTION - SPACE WAGON>
3
13 Nm
24 Nm
8
1
11 Nm
17
5
7
6
18
2
13 Nm
19 Nm
29 Nm
10
9
4
10
16
31 Nm
19
13
11 Nm
11
14 Nm
14
12
15
14 Nm
"DA
"CA
"BA
"AA
Removal steps
1. Water hose
2. Water hose
3. Water hose
4. Engine coolant temperature sensor
5. Engine coolant temperature gauge
unit
6. Water inlet fitting
7. Thermostat
8. Thermostat housing
9. Water inlet pipe
E Mitsubishi Motors Corporation
Aug. 1998
PWEE9616-A
"AA 10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
O-ring
Water pump
Water pump gasket
Oil level gauge
Oil level gauge guide
O-ring
Intake manifold stay
Intake manifold
Intake manifold gasket
Engine hanger
Revised
11A-6-4
4G6 ENGINE (E - W) - Water Pump and Intake Manifold
INSTALLATION SERVICE POINTS
Water pipe
"AA WATER PIPE / O-RING INSTALLATION
(1) Wet the O-ring (with water) to facilitate assembly.
Caution
D Keep the O-ring free of oil or grease.
O-ring
6EN0594
"BA SEALANT APPLICATION TO THERMOSTAT
HOUSING
Specified sealant:
Mitsubishi Genuine
equivalent
3 mm diameter
bead sealant
6EN1168
Part
No.
MD970389
or
NOTE
(1) Be sure to install the housing quickly while the sealant
is wet (within 15 minutes).
(2) After installation, keep the sealed area away from
the oil and coolant for approx. 1 hour.
"CA SEALANT APPLICATION TO ENGINE COOLANT
TEMPERATURE GAUGE UNIT
Specified sealant: 3M ATD Part No. 8660 or equivalent
9EN0092
"DA SEALANT APPLICATION TO ENGINE COOLANT
TEMPERATURE SENSOR
Specified sealant:
3M Nut Locking Part No. 4171 or equivalent
9EN0091
E Mitsubishi Motors Corporation
Aug. 1998
PWEE9616-A
Added
11A-6a-1
4G6 ENGINE (E - W) - Water Pump and Water Hose (GDI)
6a. WATER PUMP AND WATER HOSE (GDI)
REMOVAL AND INSTALLATION
12 Nm
11 Nm
7
2
29 Nm
4
23 Nm
3
1
9
6
12 Nm
8
5
13
10
12 Nm
22 Nm
9
11
12
13 Nm
Removal steps
1. Water hose
"EA 2. Water hose
3. Engine coolant temperature sensor
"DA 4. Engine coolant temperature gauge
unit
5. Water inlet fitting
6. Thermostat
E Mitsubishi Motors Corporation
Aug. 1998
PWEE9616-A
"CA
"BA
"AA
"AA
7.
8.
9.
10.
11.
12.
13.
Water outlet fitting
Thermostat housing
O-ring
Water inlet pipe
Water pump
Gasket
Knock sensor
Added
11A-6a-2
4G6 ENGINE (E - W) - Water Pump and Water Hose (GDI)
INSTALLATION SERVICE POINTS
"AA O-RING / WATER INLET PIPE INSTALLATION
(1) Replace the O-ring of the water inlet pipe, and then apply
water to the O-ring to make installation easy.
Caution
D Never apply any oil or grease to the O-ring.
D Secure the water pipe after the thermostat case
has been reinstalled.
"BA THERMOSTAT CASE INSTALLATION
(1) Apply 3 mm diameter of Form-In-Place Gasket (FIPG)
to the location shown in the illustration.
Specified sealant:
Mitsubishi Genuine
equivalent
Part
No.
MD970389
or
"CA WATER OUTLET FITTING INSTALLATION
(1) Apply 3 mm diameter of Form-In-Place Gasket (FIPG)
to the location shown in the illustration.
Specified sealant:
Mitsubishi Genuine
equivalent
Part
No.
MD970389
or
"DA ENGINE COOLANT TEMPERATURE GAUGE UNIT
INSTALLATION
(1) Apply the specified sealant to the threads.
Specified sealant:
3M ATD Part No. 8660 or equivalent
9EN0092
"EA ENGINE COOLANT TEMPERATURE SENSOR
INSTALLATION
(1) When reusing the sensor, apply the specified sealant
to the threads.
Specified sealant:
3M Nut Locking Part No. 4171 or equivalent
9EN0091
E Mitsubishi Motors Corporation
Aug. 1998
PWEE9616-A
Added
11A-7-1
4G6 ENGINE (E - W) - Exhaust Manifold
7. EXHAUST MANIFOLD
REMOVAL AND INSTALLATION (GALANT)
1
13 Nm
6
29 Nm
4
13 Nm
49 Nm
2
5
13 Nm
13 Nm
3
13 Nm
Removal steps
"AA 1. Water outlet fitting
2. Heat protector
(Multipoint fuel injection)
3. Exhaust manifold cover
(Carburetor)
4. Engine hanger
5. Exhaust manifold
6. Exhaust manifold gasket
E Mitsubishi Motors Corporation
Aug. 1998
PWEE9616-A
Revised
11A-7-2
4G6 ENGINE (E - W) - Exhaust Manifold
REMOVAL AND INSTALLATION (SPACE WAGON)
1
13 Nm
5
29 Nm
3
49 Nm
2
13 Nm
4
Removal steps
"AA 1. Water outlet fitting
2. Exhaust manifold cover
3. Engine hanger
4. Exhaust manifold
5. Exhaust manifold gasket
INSTALLATION SERVICE POINTS
"AA SEALANT APPLICATION TO WATER OUTLET
FITTING
3 mm diameter
bead sealant
Specified sealant:
Mitsubishi Genuine
equivalent
6EN1170
E Mitsubishi Motors Corporation
Aug. 1998
Part
No.
MD970389
or
NOTE
(1) Be sure to install the water outlet fitting quickly while
the sealant is wet (within 15 minutes).
(2) After installation, keep the sealed area away from
the oil and coolant for approx. 1 hour.
PWEE9616-A
Revised
4G6 ENGINE (E - W) - Rocker Arms and Camshaft
11A-8-1
8. ROCKER ARMS AND CAMSHAFT
REMOVAL AND INSTALLATION
Apply engine oil to all
moving parts before
installation.
1
2
3
3.4 Nm
4
5
6
31 Nm
13
8
12
12
12
11
11
10
11
16
10
12
11
10
15
10
15
14
15
17
18
15
9
7
Removal steps
1. Breather hose
2. P.C.V. hose
3. Oil filler cap
4. Rocker cover
5. Rocker cover gasket
6. Oil seal
"CA 7. Oil seal
AA" "BA 8. Rocker arms and rocker arm shaft
AA" "BA 9. Rocker arms and rocker arm shaft
E Mitsubishi Motors Corporation
Aug. 1998
PWEE9616-A
"BA 10.
11.
12.
13.
"AA 14.
15.
16.
"AA 17.
18.
Rocker shaft spring
Rocker arm A
Rocker arm B
Rocker arm shaft (Intake side)
Lash adjuster
Rocker arm C
Rocker arm shaft (Exhaust side)
Lash adjuster
Camshaft
Revised
11A-8-2
4G6 ENGINE (E - W) - Rocker Arms and Camshaft
REMOVAL SERVICE POINT
AA" ROCKER ARMS AND ROCKER ARM SHAFTS
REMOVAL
Caution
D If the lash adjuster is re-used, clean the lash
adjuster. (Refer to 11A-8-3.)
(1) Set special tool MD998443 to prevent the lash adjuster
from coming free and falling to the floor.
INSTALLATION SERVICE POINTS
"AA LASH ADJUSTER INSTALLATION
(1) Insert the lash adjuster to rocker arm, being careful not
to spill the diesel fuel. Then use the special tool to prevent
adjuster from falling while installing it.
Caution
D If the lash adjuster is re-used, clean the lash
adjuster. (Refer to 11A-8-3.)
"BA ROCKER SHAFT SPRING / ROCKER ARMS AND
ROCKER ARM SHAFT INSTALLATION
(1) Temporarily tighten the rocker shaft with the bolt so that
all rocker arms on the inlet valve side do not push the
valves.
(2) Fit the rocker shaft spring from the above and position
it so that it is right angles to the plug guide.
NOTE
Install the rocker shaft spring before installing the exhaust
side rocker arms and rocker arm shaft.
(3) Remove the special tool for securing the lash adjuster.
(4) Make sure that the notch in the rocker arm shaft is in
the direction as illustrated.
"CA CAMSHAFT OIL SEAL INSTALLATION
MD998713
E Mitsubishi Motors Corporation
Aug. 1998
PWEE9616-A
Revised
4G6 ENGINE (E - W) - Rocker Arms and Camshaft
11A-8-3
INSPECTION
CAMSHAFT
(1) Measure the cam height.
Item
GALANT
SPACE
WAGON
Standard value mm
Limit mm
Intake
37.39
36.89
Exhaust
37.14
36.64
Intake
37.39
36.89
Exhaust
36.83
36.33
ROCKER ARM
(1) Check the roller surface. If any dents, damage or seizure
is evident, replace the rocker arm.
(2) Check rotation of the roller. If it does not rotate smoothly
or if looseness is evident, replace the rocker arm.
(3) Check the inside diameter. If damage or seizure is evident,
replace the rocker arm.
Roller tip
LASH ADJUSTERS
Caution
D The lash adjusters are precision-engineered
mechanisms. Do not allow them to become
contaminated by dirt or other foreign substances.
D Do not attempt to disassemble the lash adjusters.
D Use only fresh diesel fuel to clean the lash
adjusters.
Outside
cleaning
A
Inside
cleaning
B
Filling with
diesel fuel
(1) Prepare three containers and approximately five liters
of diesel fuel. Into each container, pour enough diesel
fuel to completely cover a lash adjuster when it is standing
upright. Then, perform the following steps with each lash
adjuster.
C
(2) Place the lash adjuster in container A and clean its outside
surface.
NOTE
Use a nylon brush if deposits are hard to remove.
E Mitsubishi Motors Corporation
Aug. 1998
PWEE9616-A
Revised
11A-8-4
4G6 ENGINE (E - W) - Rocker Arms and Camshaft
(3) Fit special tool MD998441 onto the lash adjuster.
(4) While gently pushing down the internal steel ball using
special tool MD998442, move the plunger through 5 to
10 strokes until it slides smoothly. In addition to eliminating
stiffness in the plunger, this operation will remove dirty
oil.
MD998441
Diesel fuel
MD998442
Caution
D The steel ball spring is extremely weak, so the
lash adjuster’s functionality may be lost if the
air bleed wire is pushed in hard.
NOTE
If the plunger remains stiff or the mechanism appears
otherwise abnormal, replace the lash adjuster.
(5) Remove the lash adjuster from the container. Then, push
down the steel ball gently and push the plunger to eliminate
diesel fuel from the pressure chamber.
MD998442
Diesel fuel
(6) Fit special tool MD998441 onto the lash adjuster.
(7) Place the lash adjuster in container B. Then, gently push
down the internal steel ball using special tool MD998442
and move the plunger through 5 to 10 strokes until it
slides smoothly. This operation will clean the lash
adjuster’s pressure chamber.
MD998441
Diesel fuel
MD998442
Caution
D The steel ball spring is extremely weak, so the
lash adjuster’s functionality may be lost if the
air bleed wire is pushed in hard.
(8) Remove the lash adjuster from the container. Then, push
down the steel ball gently and push the plunger to eliminate
diesel fuel from the pressure chamber.
MD998442
Diesel fuel
E Mitsubishi Motors Corporation
Aug. 1998
PWEE9616-A
Revised
4G6 ENGINE (E - W) - Rocker Arms and Camshaft
11A-8-5
(9) Place the lash adjuster in container C. Then, gently push
down the internal steel ball using special tool MD998442.
MD998442
Diesel
fuel
MD998441
Caution
D Do not use container C for cleaning. If cleaning
is performed in container C, foreign matter could
enter the pressure chamber when the chamber
is filled with diesel fuel.
(10)Stand the lash adjuster with its plunger at the top, then
push the plunger downward firmly until it moves through
its greatest possible stroke. Return the plunger slowly,
then release the steel ball and allow the pressure chamber
to fill diesel fuel.
(11)Remove special tool MD998441.
MD998442
MD998441
Diesel fuel
(12)Remove the lash adjuster from the container, then stand
the lash adjuster with its plunger at the top. Push the
plunger firmly and check that it does not move. Also,
check that the lash adjuster’s height matches that of a
new lash adjuster.
NOTE
If lash adjuster contracts, perform the operations (9)
through (12) again to fill it with diesel fuel completely.
Replace the lash adjuster if it still contracts after performing
these steps.
MD998440
Division = 1 mm
Lash adjuster
(13)Set the lash adjuster on the special tool MD998440 (leak
down tester).
(14)After the plunger has moved downward slightly (0.2 to
0.5 mm), measure the time taken for it to move downward
by a further 1 mm.
Standard value:
3 - 20 seconds/1 mm [with diesel fuel at 15 20_C (59 - 68_F)]
NOTE
Replace the lash adjuster if the time measurement is
out of specification.
E Mitsubishi Motors Corporation
Aug. 1998
PWEE9616-A
Added
11A-8-6
4G6 ENGINE (E - W) - Rocker Arms and Camshaft
MD998442
MD998441
Diesel fuel
(15)Fit special tool MD998441 onto the lash adjuster.
(16)Place the lash adjuster in container C again, then gently
push down the internal steel ball using special tool
MD998442.
(17)Stand the lash adjuster with its plunger at the top, then
push the plunger downward firmly until it moves through
its greatest possible stroke. Return the plunger slowly,
then release the steel ball and allow the pressure chamber
to fill with diesel fuel.
(18)Remove special tool MD998441.
(19)Remove the lash adjuster from the container, then stand
the lash adjuster with its plunger at the top. Push the
plunger firmly and check that it does not move. Also,
check that the lash adjuster’s height matches that of a
new lash adjuster.
NOTE
If lash adjuster contracts, perform the operations (15)
through (19) again to fill it with diesel fuel completely.
Replace the lash adjuster if it still contracts after performing
these steps.
(20)Stand the lash adjuster upright to prevent diesel fuel
spilling out. Do not allow the lash adjuster to become
contaminated by dirt or other foreign matter. Fit the lash
adjuster onto the engine as soon as possible.
E Mitsubishi Motors Corporation
Aug. 1998
PWEE9616-A
Added
4G6 ENGINE (E - W) - Rocker Arms and Camshafts (GDI)
11A-8a-1
8a. ROCKER ARMS AND CAMSHAFTS (GDI)
REMOVAL AND INSTALLATION
20 Nm
7
Apply engine oil to all
moving parts before
installation.
8
9
10
9.8 Nm
2
3
5
6
11
21 Nm
12
4
1
8.8 Nm
13 Nm
Removal steps
1. Camshaft position sensor
2. Cover
3. Gasket
"DA 4. Camshaft position sensing cylinder
"CA 5. Camshaft position sensing cylinder
support
"BA 6. Oil seal
E Mitsubishi Motors Corporation
Aug. 1998
7.
8.
9.
10.
11.
AA" "AA 12.
PWEE9616-A
"BA
"BA
"BA
"BA
Beam camshaft cap
Beam camshaft cap gasket
Intake camshaft
Exhaust camshaft
Rocker arm
Lash adjuster
Added
11A-8a-2
4G6 ENGINE (E - W) - Rocker Arms and Camshafts (GDI)
REMOVAL SERVICE POINTS
AA" LASH ADJUSTER REMOVAL
Caution
D If the lash adjuster is re-used, clean the lash
adjuster. (Refer to 11A-8a-4.)
INSTALLATION SERVICE POINTS
"AA LASH ADJUSTER INSTALLATION
Caution
D If the lash adjuster is re-used, clean the lash
adjuster. (Refer to 11A-8a-4.)
(1) Fit the lash adjuster onto the rocker arm without allowing
diesel fuel to spill out.
"BA BEAM CAMSHAFT CAP GASKET / BEAM
CAMSHAFT CAP / CAMSHAFT / OIL SEAL
INSTALLATION
(1) Locate the camshaft dowel pins as illustrated.
Dowel pin
Approx.
11_
Timing belt
side
3 mm
(2) Apply a 3 mm thick continuous bead of sealant to the
bottom surface of the beam camshaft cap along the
groove.
Specified sealant:
Mitsubishi genuine
equivalent
Part
No.
MD970389
or
Beam camshaft cap
(3) Apply sealant to the illustrated position of the cylinder
head upper surface.
Timing belt side
Specified sealant:
Mitsubishi genuine
equivalent
Part
No.
MD970389
or
(4) Install the beam camshaft cap gasket.
E Mitsubishi Motors Corporation
Aug. 1998
PWEE9616-A
Added
4G6 ENGINE (E - W) - Rocker Arms and Camshafts (GDI)
11A-8a-3
(5) Install the beam camshaft cap before the sealant applied
becomes dry and hard.
(6) Tighten the bolts to the specified torque in the order shown
in the illustration.
Specified torque: 20 Nm
Timing belt side
MD998713
(7) Install the camshaft oil seal before the sealant applied
becomes dry and hard.
(8) Wipe off squeezed out excess sealant from the
circumference of the beam camshaft cap.
"CA CAMSHAFT POSITION SENSING CYLINDER
SUPPORT INSTALLATION
(1) Apply a 3 mm bead of form-in-place gasket (FIPG) to
the area shown.
Specified sealant:
Mitsubishi genuine
equivalent
Part
No.
MD970389
or
"DA CAMSHAFT POSITION SENSING CYLINDER
INSTALLATION
(1) Set the No. 1 cylinder to the compression top dead center
position (so that dowel pin of the exhaust camshaft is
at the top).
(2) Install the camshaft position sensing cylinder so that the
white paint mark is facing in the direction shown in the
illustration.
Paint mark
Camshaft
position
sensor
INSPECTION
CAMSHAFT
(1) Measure the cam height.
Standard value:
Intake
35.79 mm
Exhaust
37.14 mm
Limit:
Intake
Exhaust
E Mitsubishi Motors Corporation
Aug. 1998
PWEE9616-A
35.29 mm
36.64 mm
Added
11A-8a-4
4G6 ENGINE (E - W) - Rocker Arms and Camshafts (GDI)
LASH ADJUSTER
Caution
D The lash adjusters are precision-engineered
mechanisms. Do not allow them to become
contaminated by dirt or other foreign substances.
D Do not attempt to disassemble the lash adjusters.
D Use only fresh diesel fuel to clean the lash
adjusters.
Outside
cleaning
A
Inside
cleaning
B
Filling with
diesel fuel
(1) Prepare three containers and approximately five liters
of diesel fuel. Into each container, pour enough diesel
fuel to completely cover a lash adjuster when it is standing
upright. Then, perform the following steps with each lash
adjuster.
C
(2) Place the lash adjuster in container A and clean its outside
surface.
NOTE
Use a nylon brush if deposits are hard to remove.
Diesel
fuel
(3) While gently pushing down the internal steel ball using
special tool MD998442, move the plunger through 5 to
10 strokes until it slides smoothly. In addition to eliminating
stiffness in the plunger, this operation will remove dirty
oil.
MD998442
Diesel fuel
Caution
D The steel ball spring is extremely weak, so the
lash adjuster’s functionality may be lost if the
air bleed wire is pushed in hard.
NOTE
If the plunger remains stiff or the mechanism appears
otherwise abnormal, replace the lash adjuster.
E Mitsubishi Motors Corporation
Aug. 1998
PWEE9616-A
Added
4G6 ENGINE (E - W) - Rocker Arms and Camshafts (GDI)
11A-8a-5
(4) Removal the lash adjuster from the container. Then, push
down the steel ball gently and push the plunger to eliminate
diesel fuel from the pressure chamber.
MD998442
Caution
D Make sure the oil hole in the side of the body
is pointing toward container A. Do not point the
oil hole at yourself or other people.
Diesel fuel
(5) Place the lash adjuster in container B. Then, gently push
down the internal steel ball using special tool MD998442
and move the plunger through 5 to 10 strokes until it
slides smoothly. This operation will clean the lash
adjuster’s pressure chamber.
Diesel fuel
MD998442
Caution
D The steel ball spring is extremely weak, so the
lash adjuster’s functionality may be lost if the
air bleed wire is pushed in hard.
(6) Remove the lash adjuster from the container. Then, push
down the steel ball gently and push the plunger to eliminate
diesel fuel from the pressure chamber.
MD998442
Caution
D Make sure the oil hole in the side of the body
is pointing toward container A. Do not point the
oil hole at yourself or other people.
Diesel fuel
(7) Place the lash adjuster in container C. Then, gently push
down the internal steel ball using special tool MD998442.
Caution
D Do not use container C for cleaning. If cleaning
is performed in container C, foreign matter could
enter the pressure chamber when chamber is filled
with diesel fuel.
MD998442
Diesel fuel
(8) Stand the lash adjuster with its plunger at the top, then
push the plunger downward firmly until it moves through
its greatest possible stroke. Return the plunger slowly,
then release the steel ball and allow the pressure chamber
to fill with diesel fuel.
MD998442
Diesel fuel
E Mitsubishi Motors Corporation
Aug. 1998
PWEE9616-A
Added
11A-8a-6
4G6 ENGINE (E - W) - Rocker Arms and Camshafts (GDI)
(9) Remove the lash adjuster from the container, then stand
the lash adjuster with its plunger at the top. Push the
plunger firmly and check that it does not move. Also,
check that the lash adjuster’s height matches that of a
new lash adjuster.
NOTE
If lash adjuster contracts, perform the operations (7)
through (9) again to fill it with diesel fuel completely.
Replace the lash adjuster if it still contracts after performing
these steps.
MD998440
Division = 1 mm
(10)Set the lash adjuster on the special tool MD998440 (leak
down tester).
Lash adjuster
Lash
adjuster
MD998442
E Mitsubishi Motors Corporation
Nut
(11)Remove the bolt from the tester, then adjust the height
as illustrated.
(12)After the plunger has moved downward slightly measure
the time taken for it to move downward by a further 1
mm.
Standard value:
3 - 20 second/1 mm [with diesel fuel at 15 - 20_C
(59 - 68_F)]
Diesel fuel
Aug. 1998
NOTE
Replace the lash adjuster if the time measurement is
out of specification.
(13)Place the lash adjuster in container C again, then gently
push down the internal steel ball using special tool
MD998442.
(14)Stand the lash adjuster with its plunger at the top, then
push the plunger downward firmly until it moves through
its greatest possible stroke. Return the plunger slowly,
then release the steel ball and allow the pressure chamber
to fill with diesel fuel.
PWEE9616-A
Added
4G6 ENGINE (E - W) - Rocker Arms and Camshafts (GDI)
11A-8a-7
(15)Remove the lash adjuster from the container, then stand
the lash adjuster with its plunger at the top. Push the
plunger firmly and check that it does not move. Also,
check the lash adjuster’s height matches that of a new
lash adjuster.
MD998442
Diesel fuel
NOTE
If lash adjuster contracts, perform the operations (13)
through (15) again to fill it with diesel fuel completely.
Replace the lash adjuster if it still contracts after performing
these steps.
(16)Stand the lash adjuster upright to prevent diesel fuel from
spilling out. Do not allow the lash adjuster to become
contaminated by dirt or other foreign matter. Fit the lash
adjuster onto the engine as soon as possible.
E Mitsubishi Motors Corporation
Aug. 1998
PWEE9616-A
Added
11A-9-1
4G6 ENGINE (E - W) - Cylinder Head and Valves
9. CYLINDER HEAD AND VALVES
REMOVAL AND INSTALLATION (SOHC)
1
2
8
20
9
10
4
14
5
15
6
17
12
13
16
19
11
18
7
3
Apply engine oil to all
moving parts before
installation.
AA" "EA
"DA
AB" "CA
"BA
AB" "CA
"BA
Removal steps
1. Cylinder head bolt
2. Cylinder head assembly
3. Cylinder head gasket
4. Retainer lock
5. Valve spring retainer
6. Valve spring
7. Intake valve
8. Retainer lock
9. Valve spring retainer
10. Valve spring
E Mitsubishi Motors Corporation
Aug. 1998
11.
AC" "AA 12.
13.
AC" "AA 14.
15.
16.
17.
18.
19.
20.
PWEE9616-A
Exhaust valve
Valve stem seal
Valve spring seat
Valve stem seal
Valve spring seat
Intake valve guide
Exhaust valve guide
Intake valve seat
Exhaust valve seat
Cylinder head
Revised
11A-9-2
4G6 ENGINE (E - W) - Cylinder Head and Valves
REMOVAL AND INSTALLATION (GDI)
8
1
9
10
4
5
6
14
20
15
17
12
13
19
16
11
18
7
3
2
Apply engine oil to all
moving parts before
installation.
AA" "EA
AB" "CA
"BA
AB" "CA
"BA
Removal steps
1. Cylinder head bolt
2. Cylinder head assembly
3. Cylinder head gasket
4. Retainer lock
5. Valve spring retainer
6. Valve spring
7. Intake valve
8. Retainer lock
9. Valve spring retainer
10. Valve spring
E Mitsubishi Motors Corporation
Aug. 1998
11.
AC" "AA 12.
13.
AC" "AA 14.
15.
16.
17.
18.
19.
20.
PWEE9616-A
Exhaust valve
Valve stem seal
Valve spring seat
Valve stem seal
Valve spring seat
Intake valve guide
Exhaust valve guide
Intake valve seat
Exhaust valve seat
Cylinder head
Revised
4G6 ENGINE (E - W) - Cylinder Head and Valves
11A-9-3
REMOVAL SERVICE POINTS
PRECAUTION FOR REMOVED PARTS
Keep removed parts in order according to the cylinder number
and intake/exhaust.
MB991654
AA" CYLINDER HEAD BOLTS REMOVAL
(1) Using the special tool, loosen the cylinder head bolts.
Loosen evenly, little by little.
9EN0061
MB991654
MD998772
AB" RETAINER LOCK REMOVAL
(1) Store removed valves, springs and other parts, tagged
to indicate their cylinder No. and location for reassembly.
9EN0062
MD998772
E Mitsubishi Motors Corporation
Aug. 1998
PWEE9616-A
Revised
11A-9-4
4G6 ENGINE (E - W) - Cylinder Head and Valves
AC" VALVE STEM SEAL REMOVAL
(1) Do not reuse removed stem seal.
INSTALLATION SERVICE POINTS
"AA VALVE STEM SEAL INSTALLATION
(1) Install the valve spring seat.
(2) The special tool must be used to install the valve stem
seal. Improper installation could result in oil leaks past
the valve guide.
MD998774
Caution
D Do not reuse removed valve stem seals.
9EN0065
MD998737
"BA VALVE SPRING INSTALLATION
(1) Direct the valve spring end with identification color toward
the spring retainer.
E Mitsubishi Motors Corporation
Aug. 1998
PWEE9616-A
Revised
4G6 ENGINE (E - W) - Cylinder Head and Valves
MD998772
11A-9-5
"CA RETAINER LOCK INSTALLATION
(1) The valve spring, if excessively compressed, causes the
bottom end of the retainer to be in contact with, and
damage, the stem seal.
9EN0062
MD998772
"DA CYLINDER HEAD GASKET IDENTIFICATION
Identification mark: 4G63N
"EA CYLINDER HEAD BOLT INSTALLATION
(1) When installing the cylinder head bolts, check that the
shank length of each bolt meets the limit. If the limit is
exceeded, replace the bolt.
Limit: Max. 99.4 mm
(2) Apply engine oil to the bolt threads and to the washers.
Shank length
6EN0782
(3) Using the special tool (MB991654) and according to the
tightening sequence, tighten the bolts to the specified
torque.
Timing belt side
Tightening torque: 78 Nm
(4) Loosen all bolts fully.
(5) Retighten the loosened bolts to a torque of 20 Nm in
the specified tightening sequence.
E Mitsubishi Motors Corporation
Aug. 1998
PWEE9616-A
Revised
11A-9-6
4G6 ENGINE (E - W) - Cylinder Head and Valves
(6) Make paint marks on the cylinder head bolt heads and
cylinder head.
(7) Give a 90_ turn to the cylinder head bolts in the specified
tightening sequence.
(8) Give another 90_ turn to the cylinder head bolts and
make sure that the paint mark on the head of each cylinder
head bolt and that on the cylinder head are on the same
straight line.
90_
90_
Paint mark
6AE0297
Caution
D If the bolt is turned less than 90_, proper fastening
performance may not be expected. When
tightening the bolt, therefore, be careful to give
a sufficient turn to it.
D If the bolt is overtightened, loosen the bolt
completely and then retighten it by repeating the
tightening procedure from step (1).
INSPECTION
CYLINDER HEAD
(1) Check the cylinder head gasket surface for flatness by
using a straightedge and thickness gauge.
Standard value: 0.05 mm
Limit: 0.2 mm
(2) If the service limit is exceeded, correct to meet
specification.
9EN0064
Grinding limit: *0.2 mm
* Includes combined with cylinder block grinding.
Cylinder head height (Specification when new):
SOHC
119.9 - 120.1 mm
GDI
131.9 - 132.1 mm
E Mitsubishi Motors Corporation
Aug. 1998
PWEE9616-A
Revised
11A-9-7
4G6 ENGINE (E - W) - Cylinder Head and Valves
VALVE
(1) Check the valve face for correct contact. If incorrect, reface
using a valve refacer. Valve seat contact should be
maintained uniform at the center of valve face.
(2) If the margin exceeds the service limit, replace the valve.
Item
SOHC
GDI
Standard value mm
Limit mm
Intake
1.0
0.5
Exhaust
1.2
0.7
Intake
1.0
0.5
Exhaust
1.5
1.0
(3) Measure valve’s total length. If measurement is less than
specified, replace the valve.
Item
SOHC
GDI
Limit mm
Intake
112.30
111.80
Exhaust
114.11
113.61
Intake
105.5
105.0
Exhaust
105.7
105.2
VALVE SPRING
(1) Measure the free height of spring and, if it is smaller
than the limit, replace.
Out of
square
Free
height
1EN0264
E Mitsubishi Motors Corporation
Standard value mm
Aug. 1998
Item
Standard value mm
Limit mm
SOHC
51.0
50.0
GDI
48.3
47.3
(2) Measure the squareness of the spring and, if the limit
is exceeded, replace.
Item
Standard value mm
Limit mm
SOHC
2_
4_
GDI
1.5_
4_
PWEE9616-A
Added
11A-9-8
4G6 ENGINE (E - W) - Cylinder Head and Valves
VALVE GUIDE
(1) Measure the clearance between the valve guide and valve
stem. If the limit is exceeded, replace the valve guide
or valve, or both.
Valve
guide
Item
SOHC
GDI
Valve stem end
Valve stem
projection
Spring seating
surface
DEN0212
Standard value mm
Limit mm
Intake
0.02 - 0.05
0.10
Exhaust
0.03 - 0.07
0.15
Intake
0.02 - 0.05
0.10
Exhaust
0.05 - 0.09
0.15
VALVE SEAT
(1) Assemble the valve, then measure the valve stem
projection between the end of the valve stem and the
spring seating surface. If the measurement exceeds the
specified limit, replace the valve seat.
Item
SOHC
GDI
Standard value mm
Limit mm
Intake
49.30
49.80
Exhaust
49.30
49.80
Intake
49.20
49.70
Exhaust
48.40
48.90
VALVE SEAT RECONDITIONING PROCEDURE
0.9 - 1.3 mm
43.5_ - 44_
(1) Before correcting the valve seat, check for clearance
between the valve guide and valve and, if necessary,
replace the valve guide.
(2) Using the seat grinder, correct to obtain the specified
seat width and angle.
(3) After correcting the valve seat, lap the valve and valve
seat using lapping compound. Then, check the valve
stem projection (refer to VALVE SEAT in INSPECTION).
6EN0491
E Mitsubishi Motors Corporation
Aug. 1998
PWEE9616-A
Added
4G6 ENGINE (E - W) - Cylinder Head and Valves
11A-9-9
VALVE SEAT REPLACEMENT PROCEDURE
0.5 - 1 mm
(1) Cut the valve seat to be replaced from the inside to thin
the wall thickness. Then, remove the valve seat.
0.5 - 1 mm
(2) Rebore the valve seat hole in the cylinder head to a
selected oversize valve seat diameter.
Valve seat ring hole diameter
Height of
seat ring
Item
SOHC
Standard value mm
Intake
Exhaust
Oversize I.D.
1EN0275
GDI
Intake
Exhaust
0.30 O.S.
34.30 - 34.33
0.60 O.S.
34.60 - 34.63
0.30 O.S.
31.80 - 31.83
0.60 O.S.
32.60 - 32.63
0.30 O.S.
35.30 - 35.33
0.60 O.S.
35.60 - 35.63
0.30 O.S.
33.30 - 33.33
0.60 O.S.
33.60 - 33.63
(3) Before fitting the valve seat, either heat the cylinder head
up to approximately 250_C (482_F) or cool the valve
seat in liquid nitrogen, to prevent the cylinder head bore
from galling.
(4) Using a valve seat cutter, correct the valve seat to the
specified width and angle.
See “VALVE SEAT RECONDITIONING PROCEDURE”.
E Mitsubishi Motors Corporation
Aug. 1998
PWEE9616-A
Added
11A-9-10
4G6 ENGINE (E - W) - Cylinder Head and Valves
VALVE GUIDE REPLACEMENT PROCEDURE
(1) Force the valve guide out toward the cylinder block using
a press.
(2) Machine the valve guide hole in the cylinder head to
the size of the oversize valve guide to be installed.
Caution
D Do not use the valve guide of the same size as
the removed one.
Valve gauge hole diameters in cylinder head
Item
SOHC
GDI
Standard value 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
0.05 O.S.
12.05 - 12.07
0.25 O.S.
12.25 - 12.27
0.50 O.S.
12.50 - 12.52
(3) Press-fit the valve guide until it protrude specified value
(SOHC 14 mm, GDI 19.5 mm) as shown in the illustration.
Caution
D Press the valve guide from the cylinder head top
surface.
D Valve guide for intake valve and that for exhaust
valve are different in length. (45.5 mm for intake
valve; 50.5 mm for exhaust valve)
Protrusion
1EN0106
E Mitsubishi Motors Corporation
Aug. 1998
(4) After the valve guide has been installed, insert a new
valve to check for smooth sliding motion.
PWEE9616-A
Added
4G6 ENGINE (E - W) -
11A-10-1
Front Case, Counterbalance Shafts and Oil Pan
10. FRONT CASE, COUNTERBALANCE SHAFTS AND OIL PAN
REMOVAL AND INSTALLATION <GDI ENGINE - VEHICLE FOR EUROPE AND
SOHC ENGINE>
33
19 Nm
31
13
Apply engine oil to all
moving parts before
installation.
30
(4G63)
32
21
18 (SOHC)
20
23 Nm
9.8 Nm
23 Nm
23
18 (GDI)
19
9
22
28
21 Nm
24
8
27
7
16 Nm
18 Nm
25
17
16
(4G64)
13
26
10 11
15
39 Nm
23 Nm
3
2
36 Nm
23 Nm
6
18 Nm
12
14
29
5
4
8.8 Nm
1
9.8 Nm
6.9 Nm
44 Nm
21 Nm
"OA
"NA
AA" "LA
AD" "KA
AE" "JA
"IA
Removal steps
1. Oil filter
2. Drain plug
3. Drain plug gasket
4. Oil level sensor
(Vehicle for Europe)
5. Transmission stay (GDI engine)
6. Oil pan
7. Oil screen
8. Oil screen gasket
9. Stiffener (SOHC engine - vehicle
for Europe)
10. Plug
11. O-ring
12. Flange bolt
13. Oil pressure switch
14. Relief plug
15. Relief plug gasket
16. Relief spring
17. Relief plunger
E Mitsubishi Motors Corporation
Aug. 1999
"HA
"GA
"GA
"FA
"EA
"DA
AF" "CA
AG" "BA
AG" "AA
PWEE9616-B
18.
19.
20.
21.
22.
23.
24.
25.
26.
27.
28.
29.
30.
31.
32.
Oil filter bracket
Oil filter bracket gasket
Front case assembly
Front case gasket
Oil pump cover
Oil pump driven gear
Oil pump drive gear
Crankshaft front oil seal
Oil pump oil seal
Counterbalance shaft oil seal
Front case
Counterbalance shaft, left
Counterbalance shaft, right
Counterbalance shaft front bearing
Counterbalance shaft rear bearing,
left
33. Counterbalance shaft rear bearing,
right
Revised
11A-10-2
4G6 ENGINE (E - W) -
Front Case, Counterbalance Shafts and Oil Pan
REMOVAL AND INSTALLATION <GDI ENGINE - VEHICLE FOR HONG KONG>
34
32
31
Apply engine oil to all
moving parts before
installation.
33
22
21
23 Nm
9.8 Nm
23 Nm
18 Nm
30
23
29
6.9 Nm
24 25
20
10
9
28
19
7
6
16 Nm
26
18 Nm
27
13
18
17
14
11 12
16
15
23 Nm
3
36 Nm
23 Nm
5
12 Nm
39 Nm
1
9.8 Nm
6.9 Nm
2
4
6.9 Nm
8
44 Nm
21 Nm
"OA
"NA
AB" "MA
AC" "MA
AD" "KA
AE" "JA
"IA
Removal steps
1. Oil filter
2. Drain plug
3. Drain plug gasket
4. Transmission stay
5. Oil level gauge guide
6. Oil pan lower
7. Baffle plate
8. Oil pan upper
9. Oil screen
10. Gasket
11. Plug
12. O-ring
13. Flange bolt
14. Oil pressure switch
15. Relief plug
16. Gasket
17. Relief spring
18. Relief plunger
E Mitsubishi Motors Corporation
Aug. 1998
"HA
"GA
"GA
"FA
"EA
"DA
AF" "CA
AG" "BA
AG" "AA
PWEE9616-A
19.
20.
21.
22.
23.
24.
25.
26.
27.
28.
29.
30.
31.
32.
33.
Oil filter bracket
Oil filter bracket gasket
Front case assembly
Gasket
Oil pump cover
Oil pump driven gear
Oil pump drive gear
Crankshaft front oil seal
Oil pump oil seal
Counterbalance shaft oil seal
Front case
Counterbalance shaft, left
Counterbalance shaft, right
Counterbalance shaft front bearing
Counterbalance shaft rear bearing,
left
34. Counterbalance shaft rear bearing,
right
Revised
4G6 ENGINE (E - W) MD998727
11A-10-3
Front Case, Counterbalance Shafts and Oil Pan
REMOVAL SERVICE POINTS
AA" OIL PAN REMOVAL
(1) Remove all oil pan bolts.
(2) Drive in the special tool between the cylinder block and
oil pan.
NOTE
Never use a screwdriver or chisel, instead of the service
tool, as a deformed oil pan flange will result in oil leakage.
6EN0698
AB" OIL PAN LOWER REMOVAL
(1) Apply a wood block to the oil pan side and remove the
oil pan lower by tapping lightly on it with a plastic hammer.
Caution
D Do not use a scraper or special tool to remove
the oil pan.
AC" OIL PAN UPPER REMOVAL
(1) Remove all bolts.
(2) Screw a bolt into bolt hole A shown to remove the oil
pan.
A
Caution
D Do not use a scraper or special tool to remove
the oil pan.
A
MD998162
AD" PLUG REMOVAL
(1) If the plug is too tight, hit the plug head with a hammer
two to three times, and the plug will be easily loosened.
MD998783
AE" FLANGE BOLT REMOVAL
(1) Remove the plug on the side of cylinder block.
(2) Insert a Phillips screwdriver (shank diameter 8 mm) into
the plug hole to lock the counterbalance shaft.
Plug
Screwdriver
6EN1026
E Mitsubishi Motors Corporation
Aug. 1998
PWEE9616-A
Revised
11A-10-4
4G6 ENGINE (E - W) -
Front Case, Counterbalance Shafts and Oil Pan
(3) Loosen the flange bolt.
6EN0565
AF" COUNTERBALANCE SHAFT FRONT BEARING
REMOVAL
(1) Using the special tool, remove the counterbalance shaft
front bearing from the cylinder block.
NOTE
Be sure to remove the front bearing first.
If it has not been removed, the Rear Bearing Puller cannot
be used.
AG" COUNTERBALANCE SHAFT REAR BEARING
REMOVAL
(1) Using the special tool, remove the left counterbalance
shaft rear bearing from the cylinder block.
MB991603
NOTE
When removing the left counterbalance shaft rear bearing,
install the special tool (MB991603) in front of the cylinder
block.
INSTALLATION SERVICE POINTS
"AA RIGHT COUNTERBALANCE SHAFT REAR
BEARING INSTALLATION
(1) Apply engine oil to the outer surface of bearing.
(2) Using special tools, install right rear bearing. Make sure
that oil hole of bearing is aligned with oil hole of cylinder
block.
MD998705
6EN1034
E Mitsubishi Motors Corporation
Aug. 1998
PWEE9616-A
Revised
4G6 ENGINE (E - W) -
11A-10-5
Front Case, Counterbalance Shafts and Oil Pan
"BA LEFT COUNTERBALANCE SHAFT REAR
BEARING INSTALLATION
(1) Install the special tool (Guide Plate) to the cylinder block.
(2) Apply engine oil to the rear bearing outer circumference
and bearing hole in the cylinder block.
MB991603
(3) Using the special tool, install the rear bearing.
Rear bearing
MB991603
NOTE
The left rear bearing has no oil holes.
MD998705
6EN0557
"CA COUNTERBALANCE SHAFT FRONT BEARING
INSTALLATION
(1) Using special tools, install front bearing.
MD998705
MD998705
Bearing
Cylinder block
6EN1035
"DA COUNTERBALANCE SHAFT OIL SEAL
INSTALLATION
E Mitsubishi Motors Corporation
Aug. 1998
PWEE9616-A
Revised
11A-10-6
4G6 ENGINE (E - W) -
Front Case, Counterbalance Shafts and Oil Pan
"EA OIL PUMP OIL SEAL INSTALLATION
"FA CRANKSHAFT FRONT OIL SEAL INSTALLATION
(1) Using the special tool, install the crankshaft front oil seal
into the front case.
"GA OIL PUMP DRIVEN GEAR / OIL PUMP DRIVE
GEAR INSTALLATION
(1) Apply engine oil amply to the gears and line up the
alignment marks.
"HA FRONT CASE ASSEMBLY INSTALLATION
(1) Set the special tool on the front end of crankshaft and
apply a thin coat of engine oil to the outer circumference
of the special tool to install the front case.
(2) Install the front case assembly through a new front case
gasket and temporarily tighten the flange bolts (other
than those for tightening the filter bracket).
E Mitsubishi Motors Corporation
Aug. 1998
PWEE9616-A
Revised
4G6 ENGINE (E - W) -
11A-10-7
Front Case, Counterbalance Shafts and Oil Pan
"IA SEALANT APPLICATION TO OIL PRESSURE
SWITCH
(1) Coat the threads of switch with sealant and install the
switch using the special tool.
Specified sealant: 3M ATD Part No. 8660 or equivalent
Caution
D Keep the end of the thread portion clear or sealant.
D Avoid an overtightening.
"JA FLANGE BOLT INSTALLATION
(1) Insert a Phillips screwdriver into a hole in the left side
of the cylinder block to lock the silent shaft.
6EN0564
(2) Secure the oil pump driven gear onto the left
counterbalance shaft by tightening the flange bolt to
specified torque.
MD998162
"KA PLUG INSTALLATION
(1) Install a new O-ring to the groove of front case.
(2) Using the special tool, install the plug and tighten to
specified torque.
MD998783
"LA OIL PAN INSTALLATION
(1) Clean both mating surfaces of oil pan and cylinder block.
(2) Apply a 4 mm wide bead of sealant to the entire
circumference of the oil pan flange.
Specified sealant:
Mitsubishi Genuine
equivalent
Bolt hole
portion
E Mitsubishi Motors Corporation
Part
No.
MD970389
or
Groove
portion
6EN0213
Aug. 1998
PWEE9616-A
Revised
11A-10-8
4G6 ENGINE (E - W) -
Front Case, Counterbalance Shafts and Oil Pan
NOTE
(1) Be sure to install the oil pan quickly while the sealant
is wet (within 15 minutes).
(2) After installation, keep the sealed area away from
the oil and coolant for approx. one hour.
(3) Note the difference in bolt lengths at the location shown.
"MAOIL PAN UPPER / OIL PAN LOWER
INSTALLATION
(1) Clean both mating surfaces of oil pan and cylinder block.
(2) Apply a 4 mm wide bead of sealant to the entire
circumference of the oil pan upper flange.
Oil pan upper
Specified sealant:
Mitsubishi Genuine
equivalent
Groove
portion
Bolt hole portion
Part
No.
MD970389
or
NOTE
(1) Be sure to install the oil pan quickly while the sealant
is wet (within 15 minutes).
(2) After installation, keep the sealant area away from
the oil and coolant for approx. one hour.
(3) Note the difference in bolt lengths at the location shown.
Timing belt side
M6 ´ 16
mm
E Mitsubishi Motors Corporation
Aug. 1998
PWEE9616-A
Revised
4G6 ENGINE (E - W) -
11A-10-9
Front Case, Counterbalance Shafts and Oil Pan
(4) Clean both mating surfaces of oil pan lower and oil pan
upper.
(5) Apply a 4 mm wide bead of sealant to the entire
circumference of the oil pan lower flange.
Oil pan lower
Bolt hole
portion
Groove
portion
1
4
Part
No.
MD970389
or
NOTE
(1) Be sure to install the oil pan quickly while the sealant
is wet (within 15 minutes).
(2) After installation, keep the sealant area away from
the oil and coolant for approx. one hour.
(6) Tighten the oil pan lower mounting bolts in the sequence
shown in the illustration.
8
6
Specified sealant:
Mitsubishi Genuine
equivalent
3
5
2
9
7
Oil pan side
"NA DRAIN PLUG GASKET INSTALLATION
(1) Install the drain plug gasket in the shown direction.
Drain plug
gasket
7EN0307
Bracket side
"OA OIL FILTER INSTALLATION
(1) Clean the installation surface of the filter bracket.
(2) Apply engine oil to the O-ring of the oil filter.
(3) Screw the oil filter in until the O-ring contacts the bracket.
Then tighten 3/4 turn (tightening torque: 16 Nm).
NOTE
For the oil filter MD135737, tighten one turn (Tightening
torque: 14 Nm) after the O-ring contacts the bracket.
6EN0591
E Mitsubishi Motors Corporation
Aug. 1998
PWEE9616-A
Added
11A-10-10 4G6 ENGINE (E - W) -
Front Case, Counterbalance Shafts and Oil Pan
INSPECTION
FRONT CASE
(1) Check oil holes for clogging and clean if necessary.
(2) Check the left counterbalance shaft front bearing section
for wear, damage and seizure. If there is anything wrong
with the section, replace the front case.
(3) Check the front case for cracks and other damage.
Replace cracked or damaged front case.
OIL SEAL
(1) Check the oil seal lip for wear and damage. Replace
oil seal if necessary.
(2) Check the oil seal lip for deterioration. Replace oil seal
if necessary.
COUNTERBALANCE SHAFT
(1) Check oil holes for clogging.
(2) Check journals for seizure, damage and contact with
bearing. If there is anything wrong with the journal, replace
the counterbalance shaft, bearing or front case assembly.
OIL PUMP
(1) Assemble the oil pump gear to the front case and rotate
it to ensure smooth rotation with no looseness.
(2) Ensure that there is no ridge wear on the contact surface
between the front case and the gear surface of the oil
pump cover.
(3) Check the side clearance.
Standard value:
Drive gear
Driven gear
E Mitsubishi Motors Corporation
Aug. 1998
PWEE9616-A
0.08 - 0.14 mm
0.06 - 0.12 mm
Added
4G6 ENGINE (E - W) - Piston and Connecting Rod
11. PISTON AND CONNECTING ROD
REMOVAL AND INSTALLATION
Apply engine oil to all
moving parts before
installation.
6
7
8
4
10
12
9
11
5
3
2
1
"GA
AA" "FA
"EA
"DA
"EA
"CA
Removal steps
1. Nut
2. Connecting rod cap
3. Connecting rod bearing
4. Piston and connecting rod assembly
5. Connecting rod bearing
6. Piston ring No. 1
E Mitsubishi Motors Corporation
Dec. 1996
"CA 7. Piston ring No. 2
"BA 8. Oil ring
AB" "AA 9. Piston pin
10. Piston
11. Connecting rod
12. Bolt
PWEE9616
11A-11-1
11A-11-2
4G6 ENGINE (E - W) - Piston and Connecting Rod
REMOVAL SERVICE POINTS
AA" CONNECTING ROD CAP REMOVAL
(1) Mark the cylinder number on the side of the connecting
rod big end for correct reassembly.
(2) Keep the removed connecting rods, caps, and bearings
in order according to the cylinder number.
AB" PISTON PIN REMOVAL
(1) Insert the special tool, Push Rod, into the piston from
the side on which the front mark is stamped in the piston
head, and attach the guide C to the push rod end.
(2) Place the piston and connecting rod assembly on the
special tool, Piston Pin Setting Base, with the front mark
facing upward.
(3) Using a press, remove the piston pin.
NOTE
Keep the disassembled pistons, piston pins and
connecting rods in order according to the cylinder number.
E Mitsubishi Motors Corporation
Dec. 1996
PWEE9616
4G6 ENGINE (E - W) - Piston and Connecting Rod
11A-11-3
INSTALLATION SERVICE POINTS
"AA PISTON PIN INSTALLATION
(1) Measure the following dimensions of the piston, piston
pin and connecting rod.
A: Piston pin insertion hole length
B: Distance between piston bosses
C: Piston pin length
D: Connecting rod small end width
(2) Obtain dimension L (to be used later) from the above
measurements by using by following formula.
L =
(A - C) - (B - D)
2
(3) Insert the special tool, Push Rod, into the piston pin and
attach the guide A to the push rod end.
(4) Assemble the connecting rod in the piston with their front
marks facing the same direction.
(5) Apply engine oil to the entire periphery of the piston pin.
(6) Insert the piston pin, push rod and guide A assembly
having assembled in step (3) from the guide A side into
the piston pin hole on the front marked side.
(7) Screw the guide B into the guide A until the gap between
both guides amounts to the value L obtained in step
(2) plus 3 mm.
3 mm + L
(8) Place the piston and connecting rod assembly onto the
piston setting base with the front marks directed upward.
(9) Press-fit the piston pin using a press.
If the press-fitting force required is less than the standard
value, replace the piston and piston pin set or/and the
connecting rod.
Standard value: 7,350 - 17,200 N
E Mitsubishi Motors Corporation
Dec. 1996
PWEE9616
11A-11-4
4G6 ENGINE (E - W) - Piston and Connecting Rod
(10)Check that the piston moves smoothly
Upper
side rail
Spacer
Lower side rail
6EN1237
"BA OIL RING INSTALLATION
(1) Fit the oil ring spacer into the piston ring groove.
NOTE
1. The side rails and spacer may be installed in either
direction.
2. New spacers and side rails are colored for
identification of their sizes.
Size
Identification color
Standard
None
0.50 mm oversize
Red
1.00 mm oversize
Yellow
(2) Install the upper side rail.
To install the side rail, first fit one end of the rail into
the piston groove, then press the remaining portion into
position by finger. See illustration.
Use of ring expander to expand the side rail end gap
can break the side rail, unlike other piston rings.
Side rail gap
Caution
D Do not use piston ring expander when installing
side rail.
1EN0269
E Mitsubishi Motors Corporation
Dec. 1996
(3) Install the lower side rail in the same procedure as
described in step (2).
(4) Make sure that the side rails move smoothly in either
direction.
PWEE9616
11A-11-5
4G6 ENGINE (E - W) - Piston and Connecting Rod
"CA PISTON RING NO. 2 / PISTON RING NO. 1
INSTALLATION
(1) Using piston ring expander, fit No. 2 and then No. 1 piston
ring into position.
NOTE
1. The ring end is provided with identification mark.
Item
No. 1 ring
No. 2 ring
Identification mark
Identification mark
Side mark
No. 1
No. 2
9EN0524
Identification mark
4G63 SOHC
1R
4G64 GDI
T
4G63 SOHC
2R
4G64 GDI
2T
2. Install piston rings with identification mark facing up,
to the piston crown side.
3. Size marks on position rings are as follows.
Size
Size mark
Standard
None
0.50 mm oversize
50
1.00 mm oversize
100
"DA PISTON AND CONNECTING ROD ASSEMBLY
INSTALLATION
(1) Liberally coat engine oil on the circumference of the piston,
piston ring, and oil ring.
(2) Arrange the piston ring and oil ring gaps (side rail and
spacer) as shown in the figure.
(3) Rotate the crankshaft so that crank pin is on the center
of cylinder bore.
Timing belt side
(4) Use suitable thread protectors on the connecting rod bolts
before inserting piston and connecting rod assembly into
the cylinder block.
Care must be taken not to nick the crank pin.
(5) Using a suitable piston ring compressor tool, install the
piston and connecting rod assembly into the cylinder block.
"EA CONNECTING ROD BEARINGS INSTALLATION
When the bearing needs replacing, select and install a proper
bearing by the following procedure.
(1) Measure the crankshaft pin diameter and confirm its
classification from the following table. In the case of a
crankshaft supplied as a service part, identification colors
of its pins are painted at the positions shown in the
illustration.
E Mitsubishi Motors Corporation
Aug. 1998
PWEE9616-A
Revised
11A-11-6
4G6 ENGINE (E - W) - Piston and Connecting Rod
(2) The connecting rod bearing identification mark is stamped
at the position shown in the illustration.
Crankshaft pin
Classification
Identification mark
Connecting rod bearing
Identification mark
Identification
color
O. D. mm
Identification
mark
Thickness mm
Production part
Service
part
1
None
Yellow
44.995 - 45.000
1
1.478 - 1.491
2
3
None
None
44.985 - 44.995
2
1.491 - 1.495
None
White
44.980 - 44.985
3
1.495 - 1.499
Connecting rod I.D.: 48.000 - 48.015 mm
(3) Select a proper bearing from the above table on the basic
of the identification data confirmed under items (1) and
(2).
[Example]
If the measured value of a crankshaft pin outer diameter
is 44.996 mm, the pin is classified as “1” in the table.
In case the crankshaft is also replaced by a spare part,
check the identification colors of the pins painted on the
new crankshaft. If the color is yellow, for example, the
pin is classified as “1”. In the above cases, select the
connection rod bearing having identification mark “1”.
"FA CONNECTING ROD CAP NUT INSTALLATION
(1) Verifying the mark made during disassembly, install the
bearing cap to the connecting rod. If the connecting rod
is new with no index mark, make sure that the bearing
locking notches come on the same side as shown.
(2) Make sure that the connecting rod big end side clearance
meets the specification.
Standard value: 0.10 - 0.25 mm
Limit: 0.4 mm
E Mitsubishi Motors Corporation
Dec. 1996
PWEE9616
4G6 ENGINE (E - W) - Piston and Connecting Rod
11A-11-7
"GA CONNECTING ROD CAP NUT INSTALLATION
Caution
D If the cylinder head has been installed before installing
the connecting rod cap nut, be sure to remove the
spark plugs.
Paint
mark
Paint mark
90_ - 100_
Nut
Bolt
6AE0298
(1) Since the connecting rod cap bolts and nuts are torqued
using the plastic area tightening method, the bolts should
be examined BEFORE reuse. If the bolt threads are
“necked down”, the bolt should be replaced.
Necking can be checked by running a nut with fingers
to the full length of the bolt threads. If the nut does not
run down smoothly, the bolt should be replaced.
(2) Before installation of each nut, apply engine oil to the
thread portion and bearing surface of the nut.
(3) Install each nut to the bolt and tighten it with fingers.
Then tighten the nuts alternately to install the cap properly.
(4) Tighten the nuts to a torque of 20 Nm.
(5) Make a paint mark on the head of each nut.
(6) Make a paint mark on the bolt end at the position 90_
to 100_ from the paint mark made on the nut in the direction
of tightening the nut.
(7) Give a 90_ to 100_ turn to the nut and make sure that
the paint mark on the nut and that on the bolt are in
alignment.
Caution
D If the nut is turned less than 90_, proper fastening
performance may not be expected. When
tightening the nut, therefore, be careful to give
a sufficient turn to it.
D If the nut is overtightened (exceeding 100_), loosen
the nut completely and then retighten it by
repeating the tightening procedure from step (1).
INSPECTION
PISTON RING
(1) Check the piston ring for damage, excessive wear, and
breakage and replace if defects are evident. If the piston
has been replaced with a new one, the piston rings must
also be replaced with new ones.
(2) Check for the clearance between the piston ring and
ring groove. If the limit is exceeded, replace the ring or
piston, or both.
Standard value: 0.02 - 0.06 mm
Limit: 0.1 mm
E Mitsubishi Motors Corporation
Dec. 1996
PWEE9616
11A-11-8
4G6 ENGINE (E - W) - Piston and Connecting Rod
(3) Install the piston ring into the cylinder bore. Force it down
with a piston, its crown being in contact with the ring,
to correctly position it at right angles to the cylinder wall.
Then, measure the end gap with a feeler gauge. If the
ring gap is excessive, replace the piston ring.
Standard value:
No. 1 ring 0.25 - 0.35 mm
No. 2 ring 0.40 - 0.55 mm
Oil ring
0.10 - 0.40 mm
Limit:
No. 1, No. 2 ring 0.8 mm
Oil ring 1.0 mm
CRANKSHAFT PIN OIL CLEARANCE
(PLASTIC GAUGE METHOD)
(1) Remove oil from the crankshaft pin and connecting rod
bearing.
(2) Cut the Plastigage to the same length as the width of
the bearing and place it on the crankshaft pin in parallel
with its axis.
Plastigage
(3) Install the connecting rod cap carefully and tighten the
nuts to specified torque.
(4) Carefully remove the connecting rod cap.
(5) Measure the width of the Plastigage at its widest part
by using a scale printed on the Plastigage package.
Standard value: 0.02 - 0.05 mm
Limit: 0.1 mm
E Mitsubishi Motors Corporation
Dec. 1996
PWEE9616
11A-12-1
4G6 ENGINE (E - W) - Crankshaft, Flywheel and Drive Plate
12. CRANKSHAFT, FLYWHEEL AND DRIVE PLATE
REMOVAL AND INSTALLATION
3
2
Apply engine oil to all
moving parts before
installation.
11 Nm
1
10
132 Nm
13
4
12
21
A
5
<GALANT>
11
11 Nm
9 Nm
7
8
132 Nm
6
9
19
20
18
<SPACE WAGON>
17
8
132 Nm
7
6
9
16
15
14
"FA
"EA
"DA
"DA
"CA
Removal steps
1. Flywheel bolt <M/T>
2. Adapter plate <M/T>
3. Flexible flywheel <M/T>
4. Adapter plate <M/T>
5. Crankshaft bushing <M/T>
6. Drive plate bolt <A/T>
7. Adapter plate <A/T>
8. Drive plate <A/T>
9. Crankshaft bushing <A/T>
10. Rear plate
11. Bell housing cover
12. Oil seal case
13. Oil seal
14. Bearing cap bolt
15. Bearing cap
16. Crankshaft bearing, lower
E Mitsubishi Motors Corporation
Aug. 1998
17. Crankshaft
"CA 18. Crankshaft bearing, upper
"BA 19. Crankshaft thrust bearing <GDI engine>
AA" "AA 20. Oil jet <GDI engine>
21. Cylinder block
Caution
On the flexible wheel equipped engines, do not
remove any of the bolts “A” of the flywheel shown
in the illustration.
The balance of the flexible flywheel is adjusted in
an assembled condition. Removing the bolt,
therefore, can cause the flexible flywheel to be out
of balance, giving damage to the flywheel.
PWEE9616-A
Revised
11A-12-2
4G6 ENGINE (E - W) - Crankshaft, Flywheel and Drive Plate
REMOVAL SERVICE POINT
AA" OIL JET REMOVAL
(1) Knock out the oil jets using an appropriate metal rod.
Caution
D Be careful not to scratch the cylinder wall.
D Do not reuse the removed oil jets.
INSTALLATION SERVICE POINTS
"AA OIL JET INSTALLATION
(1) Using a 4.5 mm diameter pin punch, drive in the oil jet
to the crankshaft journal until it seats to the bottom.
"BA CRANKSHAFT THRUST BEARING INSTALLATION
(1) Install the two thrust bearing in the number 3 bearing
bore in the cylinder block. For easier installation, apply
engine oil to the bearings; this will help hold them in
position.
(2) The thrust bearings must be installed with their groove
side toward the crankshaft web.
Groove
Identification color of crankshaft journal
E Mitsubishi Motors Corporation
Aug. 1998
"CA CRANKSHAFT BEARING INSTALLATION
(1) From the following table, select a bearing whose size
is appropriate for the crankshaft journal outside diameter.
PWEE9616-A
Revised
4G6 ENGINE (E - W) - Crankshaft, Flywheel and Drive Plate
11A-12-3
Bearing bore size
identification mark
No. 1
No. 2 No. 3
No. 4
No. 5
Bearing bore
identification
mark
Cylinder inner
diameter size
mark
Rear face of
cylinder block
Bottom of
cylinder block
Crankshaft journal outside diameter
Cylinder block
bearing bore
Crankshaft bearing
Crankshaft
for No. 3
Identification color
Size mm
Identification mark
Identification mark or
color
Identification mark or
color
Yellow
56.994 - 57.000
0
1 or Green
0 or Black
1
2 or Yellow
1 or Green
2
1 or Green
2 or Yellow
0
2 or Yellow
1 or Green
1
3 or None
2 or Yellow
2
2 or Yellow
3 or None
0
3 or None
2 or Yellow
1
4 or Blue
3 or None
2
5 or Red
4 or Blue
None
White
56.988 - 56.994
56.982 - 56.988
Crankshaft bearing size
identification mark or color
Identification
mark or color
E Mitsubishi Motors Corporation
Aug. 1998
bearing
For example, if the crankshaft journal outside diameter
ID color is “yellow” and cylinder block bearing bore ID
mark is “1”, select a bearing whose ID mark is “2” or
ID color is “yellow” for number 1, 2, 4 and 5, and a bearing
whose ID mark is “1” or ID color is “green” for number
3.
If there is no ID color paint on the crankshaft, measure
the journal outside diameter and select a bearing
appropriate for the measured value.
PWEE9616-A
Revised
11A-12-4
4G6 ENGINE (E - W) - Crankshaft, Flywheel and Drive Plate
(2) Install the bearings having an oil groove to the cylinder
block.
(3) Install the bearings having no oil groove to the bearing
cap.
Groove
Upper
Lower
"DA BEARING CAP / BEARING CAP BOLT
INSTALLATION
(1) Install the bearing caps so the arrow points to the timing
belt side.
(2) Before installing the bearing cap bolts, check that the
shank length of each bolt meets the limit. If the limit is
exceeded, replace the bolt.
Shank length
Limit: Max. 71.1 mm
9EN0477
(3) Apply engine oil to the threaded portion and bearing
surface of the bolt.
(4) Tighten the bolts to 25 Nm in the specified tightening
sequence.
Arrow mark
Paint mark
Paint mark
90_ - 100_
6AE0299
E Mitsubishi Motors Corporation
Aug. 1998
(5) Make a paint mark on the head of each bolt.
(6) Make a paint mark on the bearing cap at the position
90_ to 100_ from the paint mark made on the bolt in
the direction of tightening the bolt.
(7) According to the specified tightening sequence, give a
90_ to 100_ turn to each bolt and make sure that the
paint mark on the bolt and that on the cap are in alignment.
Caution
D If the bolt is turned less than 90_, proper fastening
performance may not be expected. When
tightening the bolt, therefore, be careful to give
a sufficient turn to it.
D If the bolt is overtightened (exceeding 100_),
loosen the bolt completely and then retighten it
by repeating the tightening procedure from step
(1).
PWEE9616-A
Revised
4G6 ENGINE (E - W) - Crankshaft, Flywheel and Drive Plate
11A-12-5
(8) After installing the bearing caps, make sure that the
crankshaft turns smoothly and the end play is correct.
If the end play exceeds the limit, replace No. 3 crankshaft
bearings.
Standard value: 0.05 - 0.18 mm
Limit: 0.25 mm
"EA OIL SEAL INSTALLATION
"FA SEALANT APPLICATION TO OIL SEAL CASE
Specified sealant:
Mitsubishi Genuine
equivalent
Part
No.
MD970389
or
NOTE
(1) Be sure to install the case quickly while the sealant
is wet (within 15 minutes).
(2) After installation, keep the sealed area away from
the oil and coolant for approx. one hour.
INSPECTION
Plastigage
CRANKSHAFT OIL CLEARANCE (PLASTIGAGE
METHOD)
(1) Remove oil from the crankshaft journal and the crankshaft
bearing.
(2) Install the crankshaft.
(3) Cut the Plastigage to the same length as the width of
the bearing and place it on the journal in parallel with
its axis.
(4) Install the crankshaft bearing cap carefully and tighten
the bolts to the specified torque.
(5) Carefully remove the crankshaft bearing cap.
(6) Measure the width of the Plastigage at its widest part
by using a scale printed on the Plastigage package.
Standard value: 0.02 - 0.04 mm
Limit: 0.1 mm
Plastigage
E Mitsubishi Motors Corporation
Aug. 1998
PWEE9616-A
Revised
11A-12-6
4G6 ENGINE (E - W) - Crankshaft, Flywheel and Drive Plate
CYLINDER BLOCK
(1) Visually check for scratches, rust, and corrosion.
Use also a flaw detecting agent for the check. If defects
are evident, correct, or replace.
(2) Using a straightedge and feeler gauge, check the block
top surface for warpage. Make sure that the surface is
free from gasket chips and other foreign matter.
Standard value: 0.05 mm
Limit: 0.1 mm
(3) If the distortion is excessive, correct within the allowable
limit or replace.
Grinding limit: 0.2 mm
Includes/combined with cylinder head grinding
Cylinder block height (when new):
4G63 284 mm
4G64 290 mm
(4) Check cylinder walls for scratches and seizure. If defects
are evident, correct (bored to oversize) or replace.
(5) Using cylinder gauge, measure the cylinder bore and
cylindricity. If worn badly, correct cylinder to an oversize
and replace piston and piston rings. Measure at the points
shown in illustration.
Standard value:
Cylinder I.D.
4G63 85.00 - 85.03 mm
4G64 86.50 - 86.53 mm
Cylindricity 0.01 mm or less
BORING CYLINDER
(1) Oversize pistons to be used should be determined on
the basis of the largest bore cylinder.
Piston size identification
Size
Identification mark
0.50 O.S.
0.50
1.00 O.S.
1.00
NOTE
Size mark is stamped on the piston top.
(2) Measure outside diameter of piston to be used. Measure
it in thrust direction as shown.
(3) Based on the measured piston O.D. calculate boring finish
dimension.
Boring finish dimension = Piston O.D. + (clearance
between piston O.D. and cylinder) - 0.02 mm
(honing margin)
E Mitsubishi Motors Corporation
Aug. 1998
PWEE9616-A
Revised
4G6 ENGINE (E - W) - Crankshaft, Flywheel and Drive Plate
11A-12-7
(4) Bore all cylinders to the calculated boring finish dimension.
Caution
D To prevent distortion that may result from
temperature rise during honing, bore cylinders,
working from No. 2, No. 4, No. 1 to No. 3.
(5) Hone to final finish dimension (piston O.D. + clearance
between piston O.D. and cylinder).
(6) Check clearance between piston and cylinder.
Clearance between piston and cylinder:
0.02 - 0.04 mm
NOTE
When boring cylinders, finish all of four cylinders to same
oversize. Do not bore only one cylinder to an oversize.
E Mitsubishi Motors Corporation
Aug. 1998
PWEE9616-A
Added
NOTES