Mitsubishi 6A1 User Manual

4.3 (3)

11A-0-1

ENGINE

6A1 SERIES

CONTENTS

GENERAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

11A-0-3

1. SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

11A-1-1

SERVICE SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

11A-1-1

REWORK DIMENSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

11A-1-3

TORQUE SPECIFICATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

11A-1-4

NEW TIGHTENING METHOD - BY USE OF BOLTS TO BE

 

TIGHTENED IN PLASTIC AREA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

11A-1-7

SEALANTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

11A-1-7

FORM-IN-PLACE GASKET (FIPG) . . . . . . . . . . . . . . . . . . . . . . . . . . . .

11A-1-8

2. SPECIAL TOOLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

11A-2-1

3. DRIVE BELT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

11A-3-1

4. TIMING BELT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

11A-4-1

5. FUEL AND EMISSION CONTROL PARTS . . . . . . . . . . . . . . . . . . . . . .

11A-5-1

6. IGNITION SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

11A-6-1

7. WATER PUMP AND WATER PIPE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

11A-7-1

8. INTAKE MANIFOLD AND EXHAUST MANIFOLD . . . . . . . . . . . . . .

11A-8-1

9. ROCKER ARM AND CAMSHAFT <SOHC> . . . . . . . . . . . . . . . . . . . .

11A-9-1

10. ROCKER COVER AND CAMSHAFT <MIVEC> . . . . . . . . . . . . . . . . .

11A-10-1

11. ROCKER ARM AND ROCKER SHAFT CAP <MIVEC> . . . . . . . .

11A-11-1

12. CYLINDER HEAD AND VALVES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

11A-12-1

13. OIL PUMP CASE AND OIL PAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

11A-13-1

14. PISTON AND CONNECTING ROD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

11A-14-1

15. CRANKSHAFT, CYLINDER BLOCK, FLYWHEEL

 

AND DRIVE PLATE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

11A-15-1

 

 

 

 

K Mitsubishi Motors Corporation

Feb. 1997

PWEE9622

11A-0-2

NOTES

K Mitsubishi Motors Corporation

Feb. 1997

PWEE9622

6A1 ENGINE (E-W) - General Information

11A-0-3

GENERAL INFORMATION

GENERAL SPECIFICATIONS

Descriptions

 

6A12

6A13

 

 

 

 

 

Type

 

60è V, OHV, DOHC (for each bank)

60è V, OHV, SOHC (for each bank)

 

 

 

 

 

Number of cylinders

 

6

6

 

 

 

 

 

Combustion chamber

 

Pentroof type

Pentroof type

 

 

 

 

 

Total displacement dm3

 

1,998

2,498

Cylinder bore mm

 

78.4

81.0

 

 

 

 

 

Piston stroke mm

 

69.0

80.8

 

 

 

 

 

Compression ratio

 

10.0

9.5*1 or 9.0*2

Valve timing

Intake

Opens

15è (Low-speed cam)

15è

 

valve

(BTDC)

37.5è (High-speed cam)

 

 

 

 

 

 

 

 

Closes

41è (Low-speed cam)

53è

 

 

(ABDC)

82.5è (High-speed cam)

 

 

 

 

 

 

 

Exhaust

Opens

41è (Low-speed cam)

53è

 

valve

(BBDC)

75è (High-speed cam)

 

 

 

 

 

 

 

 

Closes

15è (Low-speed cam)

15è

 

 

(ATDC)

30è (High-speed cam)

 

 

 

 

 

 

Lubrication system

 

Pressure feed, full-flow filtration

Pressure feed, full-flow filtration

 

 

 

 

Oil pump type

 

Trochoid type

Trochoid type

 

 

 

 

Cooling system

 

Water-cooled forced circulation

Water-cooled forced circulation

 

 

 

 

Water pump type

 

Centrifugal impeller type

Centrifugal impeller type

 

 

 

 

 

NOTE

*1: Europe and Hong Kong

*2: GCC and Export

K Mitsubishi Motors Corporation

Feb. 1997

PWEE9622

 

6A1 ENGINE (E-W) - Specifications

11A-1-1

1. SPECIFICATIONS

 

 

SERVICE SPECIFICATIONS

 

 

 

 

 

 

Items

 

Standard value

Limit

 

 

 

 

Timing belt

 

 

 

 

 

 

 

Auto tensioner rod projection mm

12.0

-

 

 

 

 

Auto tensioner rod pushed-in amount (when pushed with a force

1.0 or less

-

of 98 - 196 N) mm

 

 

 

 

 

 

 

Rocker arm and camshaft <SOHC>

 

 

 

 

 

 

Camshaft cam height mm

Intake

35.20

34.70

 

 

 

 

 

Exhaust

34.70

34.20

 

 

 

 

Camshaft journal diameter mm

 

45

-

 

 

 

 

Rocker cover and camshaft <MIVEC>

Camshaft cam height mm

Intake

(Low-speed cam)

 

 

 

 

 

(High-speed cam)

 

 

 

 

Exhaust

(Low-speed cam)

 

 

 

 

 

(High-speed cam)

 

 

 

Camshaft journal diameter mm

 

 

 

 

 

Valve clearance mm

Intake

 

 

 

 

 

Exhaust

 

 

 

 

34.34

36.46

34.40

35.86

26

0.10

0.13

33.84

35.96

33.90

35.36

-

-

-

Cylinder head and valve

 

 

 

 

 

 

 

Flatness of cylinder head gasket surface mm

-

-

 

 

 

 

Cylinder head gasket surface grinding limit (including grinding of

Less than 0.03

-

cylinder block gasket surface) mm

 

 

 

 

 

 

Cylinder head overall height

SOHC

119.9 - 120.1

-

mm

 

 

 

MIVEC

119.6 - 119.8

-

 

 

 

 

 

Cylinder head bolt nominal length mm

-

96.4

 

 

 

 

Valve margin mm

Intake

1.0

0.5

 

 

 

 

 

Exhaust

1.3

0.8

 

 

 

 

Valve stem diameter mm

 

6.0

-

 

 

 

 

Valve stem-to-guide clearance

Intake

0.02 - 0.05

0.10

mm

 

 

 

Exhaust

0.04 - 0.07

0.15

 

 

 

 

 

Valve face angle

 

45è - 45.5è

-

 

 

 

 

Valve stem projection mm

SOHC

48.45

48.95

 

 

 

 

 

MIVEC

48.40

48.90

 

 

 

 

K Mitsubishi Motors Corporation

Feb. 1997

PWEE9622

11A-1-2

6A1 ENGINE (E-W) - Specifications

 

 

Items

 

 

Standard value

 

Limit

 

 

 

 

 

 

 

 

 

Overall valve length mm

Intake

SOHC

113.02

 

112.52

 

 

 

 

 

 

 

 

MIVEC

112.37

 

111.87

 

 

 

 

 

 

 

Exhaust

SOHC

115.32

 

114.82

 

 

 

 

 

 

 

 

MIVEC

110.74

 

110.74

 

 

 

 

 

 

 

Valve spring free height mm

SOHC

 

49.9

 

 

48.9

 

 

 

 

 

 

 

 

MIVEC

 

51.5

 

 

50.5

 

 

 

 

 

 

Valve spring load/installed

SOHC

 

265/43.4

 

-

height N/mm

 

 

 

 

 

 

MIVEC

 

255/44.5

 

-

 

 

 

 

 

 

 

 

 

 

Valve spring squareness

 

 

 

 

 

 

 

 

 

 

Valve seat contact width mm

 

 

0.9 - 1.3

 

-

 

 

 

 

 

 

Valve guide internal diameter mm

 

6.6

 

 

-

 

 

 

 

 

 

 

Valve guide projection mm

SOHC

 

14.0

 

 

-

 

 

 

 

 

 

 

 

MIVEC

 

19.0

 

 

-

 

 

 

 

 

 

 

Oil pump case and oil pan

 

 

 

 

 

 

 

 

 

 

 

Oil pump tip clearance mm

 

 

0.06 - 0.18

 

-

 

 

 

 

 

 

Oil pump side clearance mm

 

 

0.04 - 0.10

 

-

 

 

 

 

 

 

Oil pump body clearance mm

 

 

0.10 - 0.18

 

0.35

 

 

 

 

 

 

 

Piston and connecting rod

 

 

 

 

 

 

 

 

 

 

 

 

Piston outside diameter mm

6A12

 

78.4

 

 

-

 

 

 

 

 

 

 

 

6A13

 

81.0

 

 

-

 

 

 

 

 

 

 

Piston ring side clearance mm

No.1 ring

 

0.02

- 0.06

 

-

 

 

 

 

 

 

 

 

No.2 ring

 

0.02

- 0.06

 

-

 

 

 

 

 

 

Piston ring end gap mm

No.1 ring

 

0.20 - 0.35

 

0.8

 

 

 

 

 

 

 

 

No.2 ring

 

0.35

- 0.50

 

0.8

 

 

 

 

 

 

 

 

Oil ring

 

0.20

- 0.50

 

1.0

 

 

 

 

 

 

 

Piston pin outside diameter mm

 

 

19.0

 

 

-

 

 

 

 

Piston pin press-in load (at room temperature) N

4,900 - 14,700

 

-

 

 

 

 

 

 

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, cylinder block, flywheel and drive plate

 

 

 

 

 

 

 

 

 

Crankshaft end play mm

 

 

0.05 - 0.25

 

0.4

 

 

 

 

 

 

 

K Mitsubishi Motors Corporation

Feb. 1997

PWEE9622

 

 

 

 

 

6A1 ENGINE (E-W) - Specifications

 

11A-1-3

Items

 

 

 

 

 

 

Standard value

 

Limit

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Crankshaft journal

diameter

6A12

 

53.0

 

-

mm

 

 

 

 

 

 

 

 

 

 

 

 

 

6A13

 

56.0

 

-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Crankshaft pin diameter mm

 

6A12

 

43.0

 

-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

6A13

 

51.0

 

-

 

 

 

 

 

 

 

Crankshaft journal oil clearance mm

 

0.02 - 0.04

 

0.1

 

 

 

 

 

 

Cylinder block gasket surface flatness mm

 

0.05

 

-

 

 

 

 

 

 

Cylinder block gasket surface grinding limit (including grinding of

-

 

0.2

cylinder head gasket surface) mm

 

 

 

 

 

 

 

 

 

 

 

 

Cylinder

block overall height

6A12

 

190.0

 

-

mm

 

 

 

 

 

 

 

 

 

 

 

 

 

6A13

 

209.0

 

-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Cylinder block cylindricity mm

 

 

0.01 or less

 

-

 

 

 

 

 

 

 

Cylinder block internal diame-

6A12

 

78.4

 

-

ter mm

 

 

 

 

 

 

 

 

 

 

 

 

 

6A13

 

81.0

 

-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Bearing cap bolt nominal length mm

 

-

 

71.1

 

 

 

 

 

 

Piston-to-cylinder clearance mm

 

0.02 - 0.04

 

-

REWORK DIMENSIONS

 

 

 

 

 

 

 

 

 

 

Item

 

 

 

 

 

 

 

Standard

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Cylinder head and valves

 

 

 

 

 

 

 

 

 

 

Cylinder head oversize valve guide hole diameter mm

0.05 O.S.

11.05 - 11.07

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0.25 O.S.

11.25 - 11.27

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0.50 O.S.

11.50 - 11.52

 

 

 

 

 

Oversize intake valve seat

 

SOHC

0.3 O.S.

29.80 - 29.82

ring hole diameter mm

 

 

 

 

 

 

 

 

 

 

0.6 O.S.

30.10 - 30.12

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MIVEC

0.3 O.S.

32.30 - 32.32

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0.6 O.S.

32.60 - 32.62

 

 

 

 

 

 

 

Oversize

exhaust

valve

 

SOHC

0.3 O.S.

27.80 - 27.82

seat ring diameter mm

 

 

 

 

 

 

 

 

 

 

0.6 O.S.

28.10 - 28.12

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MIVEC

0.3 O.S.

29.80 - 29.82

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0.6 O.S.

30.10 - 30.12

 

 

 

 

 

 

 

 

 

 

K Mitsubishi Motors Corporation

Feb. 1997

PWEE9622

11A-1-4

6A1 ENGINE (E-W) - Specifications

TORQUE SPECIFICATION

Items

 

Nm

 

 

 

 

Alternator and drive belt

 

 

 

 

 

Alternator pivot nut

 

44

 

 

 

Alternator bolt

 

21

 

 

 

Oil level gauge guide

 

23

 

 

 

Tensioner pulley

 

15

 

 

 

Engine hanger

 

23

 

 

 

Tensioner pulley bracket A

 

45

 

 

 

Crankshaft bolt

 

182

 

 

 

Engine cover

 

3

 

 

 

Timing belt

 

 

 

 

Timing belt front cover

 

11

 

 

 

Engine support bracket

 

49

 

 

 

Angle sensor

 

9

 

 

 

Angle sensor connector bracket

 

11

 

 

 

Tensioner pulley

 

48

 

 

 

Tensioner arm

 

24

 

 

 

Auto tensioner

 

21

 

 

 

Camshaft sprocket bolt

 

88

 

 

 

Idler pulley

 

35

 

 

 

Timing belt rear cover

 

11

 

 

 

Angle sensor connector bracket

 

11

 

 

Fuel and emission control parts

 

 

Air intake plenum stay

 

18

 

 

 

Connector bracket

 

11

 

 

 

EGR valve

 

22

 

 

 

Throttle body

 

12

 

 

 

Air intake plenum

 

18

 

 

 

Delivery pipe

 

12

 

 

 

Fuel pipe

 

9

 

 

 

Fuel pressure regulator

 

9

 

 

 

Alternator bracket

 

23

 

 

 

K Mitsubishi Motors Corporation

Feb. 1997

PWEE9622

6A1 ENGINE (E-W) - Specifications

11A-1-5

Items

 

Nm

 

 

 

 

 

 

 

Ignition system

 

 

 

 

 

 

Spark plug

 

25

 

 

 

 

 

Water cover (SOHC)

 

11

 

 

 

 

 

Distributor (SOHC)

 

13

 

 

 

 

 

Ignition failure sensor (MIVEC)

 

10

 

 

 

 

 

Condenser bracket assembly (MIVEC)

 

5

 

 

 

 

 

Ignition coil (MIVEC)

 

10

 

 

 

 

 

Water pump and water pipe

 

 

 

 

 

 

Engine hanger (MIVEC)

 

11

 

 

 

 

 

Engine coolant temperature gauge unit

 

11

 

 

 

 

 

Engine coolant temperature sensor

 

29

 

 

 

 

 

Heater pipe (SOHC)

 

23

 

 

 

 

 

Water inlet fitting

 

18

 

 

 

 

 

Water outlet fitting

 

18

 

 

 

 

 

Thermostat housing

 

23

 

 

 

 

 

Water pipe

 

13

 

 

 

 

 

Water pump

 

23

 

 

 

 

 

Intake manifold and exhaust manifold

 

 

 

 

 

 

Intake manifold

 

17

 

 

 

 

 

Heat protector

 

13

 

 

 

 

 

Exhaust manifold stay

 

44

 

 

 

 

 

Exhaust manifold

 

49

 

 

 

 

 

Rocker arm and camshaft <SOHC>

 

 

 

 

 

 

Rocker cover

 

4

 

 

 

 

 

Rocker arm and rocker shaft

 

31

 

 

 

 

 

Thrust case

 

24

 

 

 

 

 

Rocker arm and camshaft <MIVEC>

 

 

 

 

 

 

Rocker cover

 

4

 

 

 

 

 

Oil control valve holder

 

9

 

 

 

 

 

Cam cap

 

24

 

 

 

 

 

Bearing cap M6

 

11

 

 

 

 

 

Bearing cap M8

 

24

 

 

 

 

 

K Mitsubishi Motors Corporation

Feb. 1997

PWEE9622

11A-1-6

6A1 ENGINE (E-W) - Specifications

Items

 

Nm

 

 

 

 

 

Arm spring holder

 

11

 

 

 

 

Rocker arm and rocker shaft cap <MIVEC>

 

 

 

 

Rocker shaft cap

 

11

 

 

 

 

 

Cylinder head and valves

 

 

 

 

 

 

Cylinder head bolt

 

20

+ 120è + 120è

 

 

 

 

Oil pan and oil pump

 

 

 

 

 

 

Oil pressure switch

 

10

 

 

 

 

 

Oil filter cover

 

21

 

 

 

 

 

Water hose

 

30

 

 

 

 

 

Bolt

 

68

 

 

 

 

 

Drain plug

 

39

 

 

 

 

 

Oil level sensor

 

9

 

 

 

 

 

Oil pan

 

7

 

 

 

 

 

Oil screen

 

19

 

 

 

 

 

Baffle plate

 

9

 

 

 

 

 

Relief plug

 

44

 

 

 

 

 

Oil pump case

 

14

 

 

 

 

 

Oil pump case cover

 

12

 

 

 

 

 

Piston and connecting rod

 

 

 

 

 

 

Connecting rod

 

18

+ 90è - 100è

 

 

 

Crankshaft, cylinder block, flywheel and drive plate

 

 

 

 

Detonation sensor

 

23

 

 

 

 

 

Idler pulley bracket

 

35

 

 

 

 

 

Flywheel bolt

 

98

 

 

 

 

 

Drive plate bolt

 

98

 

 

 

 

 

Rear plate

 

11

 

 

 

 

 

Bell housing cover

 

9

 

 

 

 

 

Oil seal case

 

11

 

 

 

 

 

Bearing cap bolt

 

25

+ 90è - 100è

 

 

 

 

K Mitsubishi Motors Corporation

Feb. 1997

PWEE9622

6A1 ENGINE (E-W) - Specifications

11A-1-7

NEW TIGHTENING METHOD - BY USE OF BOLTS TO BE TIGHTENED IN PLASTIC AREA

A new type of bolts, to be tightened in plastic area, is currently used in some parts of the engine. The tightening method for the bolts is different from the conventional one. Be sure to observe the method described in the text when tightening the bolts.

Service limits are provided for the bolts. Make sure that the service limits described in the text are strictly observed.

JAreas where the bolts are in use:

(1)Cylinder head bolts

(2)Main bearing cap bolts

(3)Connecting rod cap bolts

JTightening Method

After tightening the bolts to the specified torque, tighten them another 90è to 100è, or 240è (twice 120è). The tightening method varies on different areas. Observe the tightening method described in the text.

SEALANTS

Item

Specified sealant

Quantity

 

 

 

Water pump*

Mitsubishi Genuine Part No. MD970389 or equivalent

As required

 

 

 

Water outlet fitting*

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

 

 

 

 

Camshaft bearing

3M

ATD Part No. 8660 or equivalent

As required

 

 

 

 

Cam cap

3M

ATD Part No. 8660 or equivalent

As required

 

 

 

 

Oil control valve

3M

ATD Part No. 8660 or equivalent

As required

 

 

 

Camshaft holder*

Mitsubishi Genuine Part No. MD970389 or equivalent

As required

 

 

 

 

Rocker cover

3M

ATD Part No. 8660 or equivalent

As required

 

 

 

Oil pump case*

Mitsubishi Genuine Part No. MD970389 or equivalent

As required

 

 

 

Oil pan*

Mitsubishi Genuine Part No. MD970389 or equivalent

As required

 

 

 

 

Oil pressure switch

3M

ATD Part No. 8660 or equivalent

As required

 

 

 

Oil seal case*

Mitsubishi Genuine Part No. MD970389 or equivalent

As required

 

 

 

 

Drive plate bolt

3M

Nut Locking Part No. 4171 or equivalent

As required

 

 

 

 

Flywheel bolt

3M

Nut Locking Part No. 4171 or equivalent

As required

 

 

 

 

*: parts sealed by foam-in-place gasket (FIPG)

K Mitsubishi Motors Corporation

Feb. 1997

PWEE9622

11A-1-8

6A1 ENGINE (E-W) - Specifications

FORM-IN-PLACE GASKET (FIPG)

The engine has several areas where the form-in-place gasket (FIPG) is in use. To ensure that the gasket fully serves its purpose, it is necessary to observe some precautions when applying the gasket. Bead size, continuity and location are of paramount importance. Too thin a bead could cause leaks. Too thick a bead, on the other hand, could be squeezed out of location, causing blocking or narrowing of the fluid feed line. To eliminate the possibility of leaks from a joint, therefore, it is absolutely necessary to apply the gasket evenly without a break, while observing the correct bead size.

The FIPG used in the engine is a room temperature vulcanisation (RTV) type and is supplied in a 100-gram tube (Part No. MD970389 or MD997110). Since the RTV hardens as it reacts with the moisture in the atmospheric air, it is normally used in the metallic flange areas. The FIPG, Part No. MD970389, can be used for sealing both engine oil and coolant, while Part No. MD997110 can only be used for engine oil sealing.

Disassembly

The parts assembled with the FIPG can be easily disassembled without use of a special method. In some cases, however, the sealant between the joined surfaces may have to be broken by lightly striking with a mallet or similar tool. A flat 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.

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.

K Mitsubishi Motors Corporation

Feb. 1997

PWEE9622

 

 

6A1 ENGINE (E-W) - Special Tools

11A-2-1

2. SPECIAL TOOLS

 

 

 

 

 

Tool

 

Number

 

Name

 

Use

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MB990685

 

Torque wrench

 

Adjustment of timing belt tension

 

 

 

 

 

 

 

 

 

MB990938

Handle

Use with MD998776

MB990767

Crankshaft pulley

Holding camshaft sprocket when loosening

 

holder

and tightening of bolt.

 

 

Use with MD998719

 

 

 

MB991477

Valve adjusting

Adjustment of valve clearance (MIVEC)

 

wrench

 

 

 

 

MB991478

Valve adjusting

Adjustment of valve clearance (MIVEC)

 

wrench feeler

 

 

gauge set

 

 

 

 

MB991479

Rocker arm

Adjustment of valve clearance (MIVEC)

 

piston checker

 

 

 

 

MB991614

Angle gauge

Tightening cylinder head bolt

 

 

 

MB991653

Cylinder head bolt

Tightening and loosening of cylinder head bolt

 

wrench

 

 

 

 

MB991659

Guide D

Removal of piston pin (Use with MD998780)

 

 

 

K Mitsubishi Motors Corporation

Feb. 1997

PWEE9622

11A-2-2

 

6A1 ENGINE (E-W) - Special Tools

Tool

 

Number

 

Name

 

Use

 

 

 

 

 

 

 

 

 

 

 

 

MD998440

 

Leak-down tester

 

Leak-down test of lash adjuster

 

 

 

 

 

 

 

MD998441

Lash adjuster

Air bleeding of lash adjuster

 

retainer

 

MD998442

Air bleed wire

Air bleeding of lash adjuster

 

 

 

MD998443

Lash adjuster

Retainer for holding lash adjuster in rocker arm

 

holder

at time of removal and installation of rocker arm

 

 

and rocker shaft assembly

 

 

 

MD998713

Camshaft oil seal

Installation of camshaft oil seal

 

installer

 

 

 

 

MD998716

Crankshaft wrench

Rotation of crankshaft when installing piston

 

 

and timing belt.

 

 

 

MD998717

Crankshaft front oil

Installation of crankshaft front oil seal

 

seal installer

 

 

 

 

MD998719

Pulley holder pin

Use with MB990767

 

(2)

 

 

 

 

MD998727

Oil pan remover

Removal of oil pan

 

 

 

K Mitsubishi Motors Corporation

Feb. 1997

PWEE9622

 

 

6A1 ENGINE (E-W) - Special Tools

11A-2-3

Tool

 

Number

 

Name

 

Use

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MD998735

 

Valve spring

 

Compression of valve spring

 

 

 

 

 

compressor

 

 

 

 

 

 

 

 

 

 

 

MD998754

Pin

Use with MB990767

MD998767

Tensioner pulley

Adjustment of timing belt tension

 

socket wrench

 

 

 

 

MD998772

Valve spring

Removal and installation of valve and related

 

compressor

parts

 

 

 

MD998774

Valve stem seal

Installation of valve stem seal

 

installer

 

 

 

 

MD998775

Valve stem seal

Installation of valve stem seal

 

installer

 

 

 

 

MD998776

Crankshaft rear oil

Installation of crankshaft rear oil seal

 

seal installer

Use with MB990938

 

 

 

MD998777

Camshaft oil seal

Installation of camshaft oil seal

 

installer adapter

 

 

 

 

K Mitsubishi Motors Corporation

Feb. 1997

PWEE9622

11A-2-4

 

6A1 ENGINE (E-W) - Special Tools

Tool

 

Number

 

Name

 

Use

 

 

 

 

 

 

 

 

 

 

 

 

MD998780

 

SETTING TOOL

 

Removal and installation of piston pin

 

 

 

 

Piston pin

 

 

 

 

 

 

 

 

 

MD998781

Flywheel stopper

Holding flywheel and drive plate

MD998784

Valve spring

Compression of valve spring (MIVEC)

 

compressor

(Use with MD998772)

 

adapter

 

 

 

 

K Mitsubishi Motors Corporation

Feb. 1997

PWEE9622

6A1 ENGINE (E-W) - Drive Belt

11A-3-1

3. DRIVE BELT

REMOVAL AND INSTALLATION <SOHC>

3 Nm

16

44 Nm

21 Nm

2

 

44 Nm

 

 

 

11

 

 

9

1

 

 

3

23 Nm

 

 

 

23 Nm

 

 

6

 

7

 

 

 

10

44 Nm

 

8

 

4

15 Nm

5

 

Removal steps

1.Drive belt

2.Alternator

3.Oil level gauge (dipstick)

4.Oil level gauge guide

5.O-ring

6.Tensioner pulley

7.Engine hanger

8.Tensioner pulley bracket A

15

12

13 14

182 Nm

9.Tensioner pulley bracket B

10.Adjusting stud

11.Adjusting bolt

GA+ +AG 12. Crankshaft bolt

13.Special washer

14.Crankshaft pulley

15.Flange

16.Engine cover

K Mitsubishi Motors Corporation

Feb. 1997

PWEE9622

11A-3-2

6A1 ENGINE (E-W) - Drive Belt

REMOVAL AND INSTALLATION <MIVEC>

3 Nm

16

21 Nm

44 Nm

2

1

44 Nm

9

3

23 Nm

23 Nm

7

6

10

44 Nm

8

4

15 Nm

5

Removal steps

1.Drive belt

2.Alternator

3.Oil level gauge (dipstick)

4.Oil level gauge guide

5.O-ring

6.Tensioner pulley

7.Engine hanger

8.Tensioner pulley bracket A

11

13

12

15

14

 

182 Nm

 

9.Tensioner pulley bracket B

10.Adjusting stud

11.Adjusting bolt

GA+ +AG 12. Crankshaft bolt

13.Special washer

14.Crankshaft pulley

15.Flange

16.Engine cover

K Mitsubishi Motors Corporation

Feb. 1997

PWEE9622

6A1 ENGINE (E-W) - Drive Belt

11A-3-3

REMOVAL SERVICE POINTS

GA+CRANKSHAFT PULLEY BOLT REMOVAL

(1)Hold the flywheel or drive plate in position with the special tool before removing the crankshaft pulley bolts.

INSTALLATION SERVICE POINTS

+AGCRANKSHAFT PULLEY BOLT INSTALLATION

(1)

Hold the flywheel or drive plate in position with the special

MD998781

tool before installing the crankshaft pulley bolts.

6AE0039

 

K Mitsubishi Motors Corporation

Feb. 1997

PWEE9622

Mitsubishi 6A1 User Manual

6A1 ENGINE (E-W) - Timing Belt

11A-4-1

4. TIMING BELT

REMOVAL AND INSTALLATION <SOHC>

24

 

 

11 Nm

 

 

Removal steps

 

 

1.

Timing belt

front cover, upper right

+BG 10.

Auto tensioner

2.

Timing belt

front cover, upper left

11.

Crankshaft sprocket

3.

Timing belt

front cover, lower

12.

Sensing plate

4.

Engine support bracket

13.

Crankshaft spacer

5.

Angle sensor

GB+ +AG 14.

Camshaft sprocket bolt

GA+ +CG 6. Timing belt

 

15.

Camshaft sprocket

7.

Tensioner pulley

16.

Idler pulley

8.

Tensioner arm

17.

Timing belt rear cover, center

9.

Tensioner spacer

18.

Connector bracket

K Mitsubishi Motors Corporation

Feb. 1997

PWEE9622

11A-4-2

6A1 ENGINE (E-W) - Timing Belt

REMOVAL AND INSTALLATION <MIVEC>

11 Nm

88 Nm 17

16

48 Nm

9

10

19

11 35 Nm

44 Nm

15

14

12 13

22 Nm

11 Nm

49 Nm

12 Nm

23

21

11 Nm

22

18

5

8

6

 

17

20

11 Nm

1

2

9 Nm

7

 

 

9 Nm

 

9 Nm

4

3

11 Nm

Removal steps

 

 

1.

Timing belt front cover, upper right

13.

Crankshaft sprocket

2.

Timing belt front cover, upper left

14.

Sensing plate

3.

Timing belt front cover, lower

15.

Washer

4.

Engine support bracket

GB+ +AG 16.

Camshaft sprocket bolt

5.

Angle sensor

17.

Camshaft sprocket

6.

Angle sensor

18.

Camshaft sprocket with sensing

7.

Spacer

 

plate

GA+ +DG 8.

Timing belt

19.

Idler pulley

9.

Tensioner pulley

20.

Timing belt rear cover, left

10.

Tensioner arm

21.

Timing belt rear cover, right

11.

Tensioner spacer

22.

Timing belt rear cover, center

+BG 12.

Auto tensioner

23.

Connector bracket

K Mitsubishi Motors Corporation

Feb. 1997

PWEE9622

6A1 ENGINE (E-W) - Timing Belt

11A-4-3

MB990767

MD998719

REMOVAL SERVICE POINTS

GA+ TIMING BELT REMOVAL

(1)Mark the belt running direction for reference in reinstallation.

(2)Loosen the bolt that secures the tensioner pulley to remove the timing belt.

6AE0135

6AE0044

GB+ CAMSHAFT SPROCKET BOLT REMOVAL

6AE0137

MB990767

MD998754 6AE0045

MD998719

INSTALLATION SERVICE POINTS

 

+AG CAMSHAFT SPROCKET BOLT INSTALLATION

MB990767

6AE0138

K Mitsubishi Motors Corporation

Feb. 1997

PWEE9622

11A-4-4

6A1 ENGINE (E-W) - Timing Belt

MD998754

MB990767

6AE0048

(B) (A)

6AE0049

6AE0050

6AE0329

Timing mark

6AE0358

K Mitsubishi Motors Corporation

Feb. 1997

+BG AUTO TENSIONER SETTING

(1)Set the auto tensioner in a vice, while making sure it is not tilted.

(2)Slowly close the vice to force the rod in until the set hole (A) of the rod is lined up with the set hole (B) of the cylinder.

(3)Insert a 1.4 mm wire in the set hole.

(4)Remove the auto tensioner from the vice.

+CG TIMING BELT INSTALLATION

(1)Turn the crankshaft sprocket so that its timing mark will be away from the mating timing mark by approx. three teeth.

Caution

J If the timing marks are aligned, the piston is brought to the TDC. When the camshaft is turned under this condition, the valves may interfere with the piston.

(2)Bring the timing marks of the camshaft sprockets as shown in the illustration.

PWEE9622

6A1 ENGINE (E-W) - Timing Belt

11A-4-5

6AE0331

6AE0143

6AE0057

MD998767

MB990685

6AE0058

K Mitsubishi Motors Corporation

Feb. 1997

(3)Align the timing mark on the crankshaft sprocket with that on the cylinder block side.

(4)Fit the timing belt on the sprockets in the following order:

1)Fit the timing belt on the crankshaft sprocket and then, while giving tension to the belt, fit it on the water pump sprocket.

2)Fit the belt on the left bank camshaft sprocket.

3)Fit the belt on the idler pulley while keeping it tight.

4)Align the timing mark on the right bank camshaft sprocket with the mark on the cylinder block, and then fit the belt on the camshaft sprocket.

Caution

JThe camshaft sprockets are prone to rotate. Avoid giving excessive tension to the timing belt when it is fitted.

5)Make sure that the left bank portion of the belt is not slack when the belt is fitted on the tensioner pulley. If it is slack, remove the belt and fit it again beginning with the first step.

(5)Move the tensioner pulley in the direction of the arrow and hold it in raised position by tightening the tensioner pulley bolt.

(6)Check that all timing marks are aligned correctly.

(7)Turn the crankshaft counterclockwise a quarter turn.

(8)Turn back the crankshaft clockwise until the timing marks align again.

(9)Install the special tool and a torque wrench of 0 - 5 Nm to the tensioner pulley.

(10)Torque the tensioner pulley to 3 Nm with the torque wrench.

(11)While holding the tensioner pulley, tighten the center bolt to specification.

(12)Turn the crankshaft clockwise 2 turns and let it stand for about 5 minutes.

PWEE9622

11A-4-6

6A1 ENGINE (E-W) - Timing Belt

MD998716

6AE0051

6AE0311

6AE0053

Paper clip

6AE0054

6AE0055

K Mitsubishi Motors Corporation

Feb. 1997

+DG TIMING BELT INSTALLATION

(1)Turn the crankshaft sprocket so that its timing mark will be away from the mating timing mark by approx. three teeth.

Caution

J If the timing marks are aligned, the piston is brought to the TDC. When the camshaft is turned under this condition, the valves may interfere with the piston.

(2)Bring the timing marks of the camshaft sprockets as shown in the illustration.

Caution

J If one of the camshaft sprockets on the right bank is turned with the timing mark on the other sprocket aligned, there may be danger for the intake and exhaust valves to interfere with each other.

(3)Align the timing mark on the crankshaft sprocket with the mating timing mark, and then turn the crankshaft counterclockwise by one tooth.

(4)Place the timing belt over the sprockets in the following method.

Caution

J The camshaft sprockets on the right bank can turn very easily because of the valve spring tension. Use care not to allow your fingers to get caught between the sprockets.

1) Align the timing mark of the right bank exhaust camshaft sprocket with the mating timing mark and hold the timing belt on the sprocket with a paper

clip.

2) Align the timing mark of the intake camshaft sprocket and place the timing belt around that sprocket. Then, clip the belt at the location shown.

Caution

JThe camshaft sprockets can turn easily and do not give excessive tension to the timing belt.

3)Place the timing belt around the idler pulley.

PWEE9622

6A1 ENGINE (E-W) - Timing Belt

11A-4-7

6AE0056

6AE0057

MD998767

MB990685

6AE0058

6AE0059

8EN0066

K Mitsubishi Motors Corporation

Feb. 1997

4)On the left bank, make sure that the timing marks of the camshaft sprockets are aligned and then hold the timing belt on these sprockets with paper clips.

5)Place the timing belt around the water pump pulley.

6)Place the timing belt around the crankshaft sprocket.

7)Place the timing belt around the tensioner pulley.

(5)Move the tensioner pulley in the direction of the arrow and hold it in raised position by tightening the tensioner pulley bolt.

(6)Check that all timing marks are aligned correctly.

(7)Turn the crankshaft counterclockwise a quarter turn.

(8)Turn back the crankshaft clockwise until the timing marks align again.

(9)Install the special tool and a torque wrench of 0 - 5 Nm to the tensioner pulley.

(10)Torque the tensioner pulley to 3 Nm with the torque wrench.

(11)While holding the tensioner pulley, tighten the center bolt to specification.

(12)Turn the crankshaft clockwise 2 turns and let it stand for about 5 minutes.

(13)Make sure that the wire, which has been inserted when installing the auto tensioner, can be removed easily. Belt tension should be acceptable if the wire can be easily removed. Remove the wrench. The belt tension can also be verified by checking the protrusion amount of the auto tensioner rod which should conform to the following.

Standard value: 3.8 - 4.5 mm

(14)If the wire cannot be removed easily or the rod protrusion is not up to specification, repeat steps (9) through (12) to obtain the correct tension.

INSPECTION

TIMING BELT

Replace belt if any of the following conditions exist.

(1)Hardening of back rubber.

Back side is glossy without resilience and leaves no indent when pressed with fingernail.

PWEE9622

Loading...
+ 58 hidden pages