Mitsubishi F8QT User Manual

5 (1)

11A-0-1

ENGINE

F8QT SERIES

CONTENTS

GENERAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11A-0-3 1. SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11A-1-1 SERVICE SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . 11A-1-1 TORQUE SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . 11A-1-5 FORM-IN-PLACE GASKET . . . . . . . . . . . . . . . . . . . . . . . . . 11A-1-8 2. SPECIAL TOOLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11A-2-1

3. CRANKSHAFT PULLEY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11A-3-1 4. TIMING BELT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11A-4-1 5. WATER PUMP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11A-5-1 6. THERMOSTAT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11A-6-1 7. WATER HOSES AND PIPES . . . . . . . . . . . . . . . . . . . . . . . . . . 11A-7-1 8. ENGINE COOLANT TEMPERATURE SENSOR . . . . . . . . . 11A-8-1 9. GLOW PLUGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11A-9-1 10. TURBOCHARGER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11A-10-1 11. INTAKE AND EXHAUST MANIFOLDS . . . . . . . . . . . . . . . . . 11A-11-1 12. ROCKER COVER AND CYLINDER HEAD . . . . . . . . . . . . . . 11A-12-1 13. CAMSHAFT, INTAKE AND EXHAUST VALVES . . . . . . . . . 11A-13-1 14. VACUUM PUMP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11A-14-1 15. OIL COOLER AND OIL FILTER . . . . . . . . . . . . . . . . . . . . . . . 11A-15-1 16. OIL PAN, OIL PUMP AND OIL JETS . . . . . . . . . . . . . . . . . . . 11A-16-1

17. INTERMEDIATE SHAFT AND INTERMEDIATE

SHAFT BEARINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11A-17-1 18. FUEL INJECTION NOZZLE . . . . . . . . . . . . . . . . . . . . . . . . . . . 11A-18-1 19. FUEL INJECTION PUMP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11A-19-1 20. PISTONS AND CONNECTING RODS . . . . . . . . . . . . . . . . . . 11A-20-1 21. PISTONS AND PISTON PINS . . . . . . . . . . . . . . . . . . . . . . . . . 11A-21-1 22. FLYWHEEL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11A-22-1 23. CRANKSHAFT AND CYLINDER BLOCK . . . . . . . . . . . . . . . 11A-23-1

 

 

 

E Mitsubishi Motors Corporation

July 1996

PWEE9602

11A-0-2

NOTES

E Mitsubishi Motors Corporation

July 1996

PWEE9602

F8QT ENGINE - General Information

11A-0-3

GENERAL INFORMATION

SECTIONAL VIEW OF ENGINE

REN0137

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July 1996

PWEE9602

Mitsubishi F8QT User Manual

11A-0-4

F8QT ENGINE - General Information

SECTIONAL VIEW OF ENGINE

REN0138

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July 1996

PWEE9602

F8QT ENGINE - General Information

11A-0-5

SECTIONAL VIEW OF ENGINE

REN0139

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July 1996

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11A-0-6

F8QT ENGINE - General Information

 

 

 

Description

 

Specifications

 

 

 

Type

 

F8QT diesel engine

 

 

 

Number and arrangement of cylinders

4 in-line

 

 

 

Combustion chamber

 

Swirl chamber

 

 

 

Total displacement

 

1870 cm3

Cylinder bore ´ stroke

 

80 ´ 93 mm

 

 

 

Compression ratio

 

21

 

 

 

Valve mechanism

 

Single overhead camshaft

 

 

 

Number of valves

Intake

4

 

 

 

 

Exhaust

4

 

 

 

Valve timing

Intake opening

0_ BTDC

 

 

 

 

Intake closing

18_ ABDC

 

 

 

 

Exhaust opening

41_ BBDC

 

 

 

 

Exhaust closing

0_ ATDC

 

 

 

Turbocharger

 

Exhaust gas turbocharger

 

 

 

Intercooler (charge cooling)

 

Air-cooled

 

 

 

Fuel injection pump

 

Electric with immobilizer

 

 

 

E Mitsubishi Motors Corporation

July 1996

PWEE9602

 

 

 

F8QT ENGINE - Specifications

11A-1-1

1. SPECIFICATIONS

 

 

 

 

 

SERVICE SPECIFICATIONS

 

 

 

 

 

 

 

 

 

 

 

 

Item

 

 

 

 

Standard

Limit

 

 

 

 

 

 

 

 

Cylinder head

 

 

 

 

 

 

 

 

 

 

 

 

Flatness of cylinder head surface mm

 

 

0.05

-

 

 

 

 

 

 

 

 

Cylinder head gasket

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Gasket thickness

 

Projecting

height

of

Number of holes; 2

1.4

-

mm

 

piston - 0.073

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Projecting

height

of

Number of holes; 1

1.5

-

 

 

piston 0.073 - 0.206

 

 

 

 

 

 

 

 

 

 

 

 

 

Projecting

height

of

Number of holes; 3

1.6

-

 

 

piston 0.206 -

 

 

 

 

 

 

 

 

 

 

 

 

Cylinder block

 

 

 

 

 

 

 

 

 

 

 

 

 

Cylinder diameter mm

 

 

 

Class A

80.006 - 80.024

-

 

 

 

 

 

 

 

 

 

 

 

 

 

Class B

80.256 - 80.274

-

 

 

 

 

 

 

 

Pistons

 

 

 

 

 

 

 

 

 

 

 

 

Piston-to-cylinder clearance mm

 

 

 

0.021 - 0.055

-

 

 

 

 

 

 

 

Standard, class A

 

 

 

 

79.971 - 79.985

-

 

 

 

 

 

 

 

Standard, class B

 

 

 

 

80.221 - 80.235

-

 

 

 

 

 

 

 

Piston rings

 

 

 

 

 

 

 

 

 

 

 

 

 

Height mm

 

 

 

Top

2.5

-

 

 

 

 

 

 

 

 

 

 

 

 

 

Bottom

2

-

 

 

 

 

 

 

 

 

 

 

 

 

 

Oil

3

-

 

 

 

 

 

Axial clearance in piston groove mm

 

Top

0.030 - 0.065

-

 

 

 

 

 

 

 

 

 

 

 

 

 

Bottom

0.030 - 0.065

-

 

 

 

 

 

 

 

 

 

 

 

 

 

Oil

0.030 - 0.065

-

 

 

 

 

 

 

Fitted gap (in cylinder) mm

 

 

Top

0.30 - 0.40

-

 

 

 

 

 

 

 

 

 

 

 

 

 

Bottom

0.25 - 0.40

-

 

 

 

 

 

 

 

 

 

 

 

 

 

Oil

0.25 - 0.50

-

 

 

 

 

 

 

 

Piston pin

 

 

 

 

 

 

 

 

 

 

 

 

 

Diameter mm

 

 

 

 

26

-

 

 

 

 

 

 

 

 

E Mitsubishi Motors Corporation

July 1996

PWEE9602

11A-1-2

 

F8QT ENGINE - Specifications

 

 

 

 

 

 

 

 

Item

 

 

 

Standard

Limit

 

 

 

 

 

 

 

Camshaft

 

 

 

 

 

 

 

 

 

 

 

 

Cam height

 

 

Intake

8.5

-

 

 

 

 

 

 

 

 

 

 

 

Exhaust

10.34

-

 

 

 

 

 

 

 

Camshaft end play mm

 

 

 

0.048 - 0.133

-

 

 

 

 

 

 

 

Radial clearance mm

 

 

 

0.050 - 0.150

-

 

 

 

 

 

 

 

Valves

 

 

 

 

 

 

 

 

 

 

 

 

Valves clearance

 

Checking

 

Intake

0.15 - 0.25

-

mm

 

 

 

 

 

 

 

 

 

Exhaust

0.35 - 0.45

-

 

 

 

 

 

 

 

 

 

 

 

 

 

Adjusting

 

Intake

0.2

-

 

 

 

 

 

 

 

 

 

 

 

Exhaust

0.4

-

 

 

 

 

 

 

 

Valve diameter mm

 

 

Intake

36.22

-

 

 

 

 

 

 

 

 

 

 

 

Exhaust

31.62

-

 

 

 

 

 

 

Valve seat angle

 

 

Intake

60_

-

 

 

 

 

 

 

 

 

 

 

 

Exhaust

45_

-

 

 

 

 

 

 

Valve seat width mm

 

 

Intake

1.8 ± 0.2

-

 

 

 

 

 

 

 

 

 

 

 

Exhaust

1.8

-

 

 

 

 

 

 

Valve springs

 

 

 

 

 

 

 

 

 

 

 

Length mm

 

 

Loading 0 N

43.9

-

 

 

 

 

 

 

 

 

 

 

 

Loading 250 N

36.8

-

 

 

 

 

 

 

 

 

 

 

 

Loading 612 N

26.4

-

 

 

 

 

 

 

Tappets

 

 

 

 

 

 

 

 

 

 

Diameter (tolerance) mm

 

 

35

-

 

 

 

 

 

 

Height mm

 

 

 

26.3

-

 

 

 

 

 

Clearance in cylinder block mm

 

 

0.025 - 0.075

-

 

 

 

 

 

 

Valve guides

 

 

 

 

 

 

 

 

 

 

 

Inside diameter mm

 

 

 

8

-

 

 

 

 

 

 

Outside diameter mm

 

 

Standard

13

-

 

 

 

 

(no grooves)

 

 

 

 

 

 

 

 

 

 

 

 

 

Oversize 1

13.3

-

 

 

 

 

(two grooves)

 

 

 

 

 

 

 

 

Tappet pads

 

 

 

 

 

 

 

 

Thickness (increasing by increments of 0.05) mm

2.50 - 3.70

-

 

 

 

 

 

 

 

E Mitsubishi Motors Corporation

July 1996

PWEE9602

F8QT ENGINE - Specifications

11A-1-3

 

 

 

 

Item

 

Standard

Limit

 

 

 

 

Intermediate shaft

 

 

 

 

 

 

 

Inner bearing mm

 

39.5

-

 

 

 

 

Outer bearing mm

 

40.5

-

 

 

 

 

End play mm

 

0.07 - 0.15

-

 

 

 

 

Crankshaft

 

 

 

 

 

 

 

End play mm

 

0.07 - 0.23

-

 

 

 

 

Thrust washer thickness mm

 

2.30 - 2.50

-

 

 

 

 

Radial clearance (main bearings) mm

 

0.04 - 0.07

-

 

 

 

 

Main bearing journals

 

 

 

 

 

 

 

Ovality mm

 

-

0.0025

 

 

 

 

Taper mm

 

-

0.005

 

 

 

 

Diameter mm

Standard (blue)

54.785 - 54.805

-

 

 

 

 

 

Standard (red)

54.795 - 54.805

-

 

 

 

 

 

Undersize 1

54.550 - 54.560

-

 

 

 

 

Big-end bearing journals

 

 

 

 

 

 

 

Ovality mm

 

-

0.0025

 

 

 

 

Taper mm

 

-

0.005

 

 

 

 

Diameter mm

Standard

48.00 - 48.02

-

 

 

 

 

 

Undersize 1

47.75 - 47.77

-

 

 

 

 

Bearing recess width mm

 

20.25 - 20.95

-

 

 

 

 

Relative difference mm

 

-

0.02

 

 

 

 

Connecting rod (big-end) bearings

 

 

 

 

 

 

 

Axial clearance mm

 

0.22 - 0.40

-

 

 

 

 

Radial clearance mm

 

0.031 - 0.075

-

 

 

 

 

Connecting rods

 

 

 

 

 

 

 

Length mm

 

144 ± 0.02

-

 

 

 

 

Small end inside diameter mm

 

26.013 - 26.025

-

 

 

 

 

Squareness, top/bottom mm

 

-

0.04

 

 

 

 

Straightness mm

 

-

0.1

 

 

 

 

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July 1996

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11A-1-4

F8QT ENGINE - Specifications

 

 

 

 

 

 

 

Item

 

 

 

Standard

Limit

 

 

 

 

 

 

Flywheel

 

 

 

 

 

 

 

 

 

Axial throw measured at a radius of 80 mm mm

-

0.07

 

 

 

 

 

 

Oil pump

 

 

 

 

 

 

 

 

 

 

 

End play mm

 

 

 

0.02 - 0.08

-

 

 

 

 

 

Clearance, gears to pump body (backlash) mm

 

0.10 - 0.24

-

 

 

 

 

 

 

Bearing clearance, drive shaft mm

 

 

 

0.024 - 0.49

-

 

 

 

 

 

Number of teeth on oil pump sprocket

 

8

-

 

 

 

 

 

 

Oil pressure regulator spring

 

 

 

 

 

 

 

 

 

 

 

Length mm

 

 

Loading 0 N

74.6

-

 

 

 

 

 

 

 

 

 

Loading 10.2 N

48.2

-

 

 

 

 

 

 

 

 

 

Loading 70 N

41.2

-

 

 

 

 

 

 

Lubrication system

 

 

 

 

 

 

 

 

 

 

 

Oil capacity, exclusive of oil filter L

 

 

 

4.8

-

 

 

 

 

 

 

Oil capacity, inclusive of oil filter L

 

 

 

5.3

-

 

 

 

Difference between MAX-MIN marks on dipsitck L

1.7

-

 

 

 

 

Oil pressure with new filter and hot engine

 

-13 r/s (1,000 rpm)

-

200

(min.) kPa

 

 

 

 

 

 

 

-50 r/s (3,000 rpm)

-

350

 

 

 

 

 

 

 

 

 

E Mitsubishi Motors Corporation

July 1996

PWEE9602

F8QT ENGINE - Specifications

11A-1-5

TORQUE SPECIFICATIONS

 

 

 

 

 

Items

Nm

 

 

 

 

Crankshaft pulley

 

 

 

 

 

Crankshaft pulley bolt

120

 

 

 

 

Timing belt

 

 

 

 

 

Camshaft sprocket bolt

50

 

 

 

 

Water pump

 

 

 

 

 

Water pump pulley bolt

20

 

 

 

 

Water pump bolt

12.5

 

 

 

 

Thermostat

 

 

 

 

 

Thermostat cover bolt

10

 

 

 

 

Thermostat housing bolt

10

 

 

 

 

Bleedscrew

0.6

 

 

 

 

Glow plugs

 

 

 

 

 

Glow plug

22.5

 

 

 

 

Glow plug nut

5

 

 

 

 

Turbocharger

 

 

 

 

 

Turbocharger nut

45

 

 

 

 

Exhaust downpipe connector nut

45

 

 

 

 

Oil supply pipe union nut

35

 

 

 

 

Oil return pipe union nut

25

 

 

 

 

Coolant supply pipe banjo bolt

25

 

 

 

 

Coolant supply pipe retaining nut

28.7

 

 

 

 

Coolant discharge pipe union nut

25

 

 

 

 

Coolant discharge pipe retaining nut

8

 

 

 

 

Intake and exhaust manifolds

 

 

 

 

 

EGR valve

19.5

 

 

 

 

EGR pipe

19.5

 

 

 

 

Oil pipe union nut

30

 

 

 

 

Oil pipe retaining nut

8

 

 

 

 

Manifold nut

25

 

 

 

 

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11A-1-6

F8QT ENGINE - Specifications

 

 

 

Items

 

Nm

 

 

 

Rocker cover and cylinder head

 

 

 

 

Rocker cover nut

 

5

 

 

 

Cylinder head bolt

 

30 + 50_ ± 4_ + fully slacken + 25 + 213_ ± 2_

 

 

+ (warm up) 120_ ± 7_

 

 

Camshaft, intake and exhaust valves

 

 

Camshaft bearing cap bolt (M6)

 

10

 

 

 

Camshaft bearing cap bolt (M8)

 

20

 

 

 

Glow plug

 

22.5

 

 

 

Fuel injection nozzle

 

70

 

 

 

Vacuum pump

 

 

 

 

Vacuum pump bolt

 

22

 

 

 

Vacuum hose union nut

 

22

 

 

 

Oil cooler and oil filter

 

 

 

 

Thermostat housing nut

 

60

 

 

 

Plug

 

35

 

 

 

Oil cooler nut

 

60

 

 

 

Oil pan, oil pump and oil jets

 

 

 

 

Oil drain plug

 

15

 

 

 

Oil pan bolt

 

13

 

 

 

Oil pump cover bolt

 

12

 

 

 

Oil pump body bolt

 

22

 

 

 

Oil jet

 

20

 

 

Intermediate shaft and intermediate shaft bearings

 

 

Intermediate shaft sprocket bolt

 

50

 

 

 

Intermediate shaft cover bolt

 

15

 

 

 

Intermediate shaft lockplate bolt

 

15

 

 

 

Cover bolt

 

15

 

 

 

Fuel injection nozzle

 

 

 

 

Injection pipe union nut

 

22.5

 

 

 

Nozzle body

 

70

 

 

 

Retaining nut

 

70

 

 

 

E Mitsubishi Motors Corporation

July 1996

PWEE9602

 

F8QT ENGINE - Specifications

11A-1-7

 

 

 

 

Items

 

Nm

 

 

 

 

 

Fuel injection pump

 

 

 

 

 

 

Injection pipe union nut

 

22.5

 

 

 

 

 

Screwed sleeve/nut assembly

 

90

 

 

 

 

 

Nut

 

70

 

 

 

 

 

Injection pump bolt

 

22.5

 

 

 

 

 

Bolt

 

20

 

 

 

 

 

Pistons and connecting rods

 

 

 

 

 

 

Connecting rod cap bolt

 

45

 

 

 

 

 

Flywheel

 

 

 

 

 

 

Flywheel bolt

 

53

 

 

 

 

 

Crankshaft and cylinder block

 

 

 

 

 

 

Main bearing cap bolt

 

65

 

 

 

 

 

Front plate bolt

 

12.5

 

 

 

 

 

E Mitsubishi Motors Corporation

July 1996

PWEE9602

11A-1-8

F8QT ENGINE - 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 possibly 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 vulcanization (RTV) type. Since the RTV hardens as it reacts with the moisture in the atmospheric air, it is normally used in the metallic flange areas.

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” 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 applications procedure may vary on different areas. Observe the procedure described in the text when applying the FIPG.

E Mitsubishi Motors Corporation

July 1996

PWEE9602

 

F8QT ENGINE - Special Tools

11A-2-1

2. SPECIAL TOOLS

 

 

 

 

 

 

 

 

Tool

Number

Name

Use

 

 

 

 

 

 

 

MB990767

Camshaft sprocket

Removal of camshaft sprocket

 

 

 

holder

 

 

 

 

 

 

 

MB991614

Angle gauge

Tightening cylinder head bolts

 

 

 

MB996014

Valve spring

Removal of valve spring split cones

 

compressor

 

 

 

 

MB996015

Flywheel stopper

Locking the flywheel

 

 

 

MB996016

Reamer

Reaming valve guides

 

 

 

MB996018

Slip gauge

Measuring the crankshaft end play

 

 

 

MB996020

Valve guide

Pressing in valve guides

 

remover

 

 

 

 

MB996021

Valve stem seal

Removal of valve guide seal

 

remover

 

 

 

 

 

MB996022

Valve seat installer

Pressing in intake valve seat

 

 

 

 

E Mitsubishi Motors Corporation

July 1996

PWEE9602

11A-2-2

F8QT ENGINE - Special Tools

 

 

 

 

Tool

Number

Name

Use

 

 

 

 

 

MB996023

Valve seat installer

Pressing in intake valve seat

 

 

 

 

 

MB996024

Reamer

Reaming valve guides

 

 

 

 

 

MB996025

Bearing puller

Removal of intermediate shaft outer bearing

 

 

 

 

 

MB996026

Bearing puller

Removal of intermediate shaft inner bearing

 

 

 

 

 

MB996027

Bearing installer

Installation of intermediate shaft inner bearing

 

 

 

 

 

MB996028

Bearing installer

Installation of intermediate shaft outer bearing

 

 

 

 

 

MB996029

Valve guide

Pressing in valve guides

 

 

installer

 

 

 

 

 

 

MB996030

Measuring device

Adjustment of fuel injection pump

 

 

adapter

 

 

 

 

 

 

MB996031

Valve stem seal

Installation of valve guide seal

 

 

installer

 

 

 

 

 

E Mitsubishi Motors Corporation

July 1996

PWEE9602

 

F8QT ENGINE - Special Tools

11A-2-3

 

 

 

 

 

Tool

Number

Name

Use

 

 

 

 

 

 

 

MB996032

Tension gauge

Measuring timing belt deflection

 

 

 

 

 

 

 

MB996033

Tension gauge

Measuring timing belt deflection

 

 

 

 

 

 

MB996034

Sprocket stopper

Removal of intermediate shaft sprocket

 

 

 

 

 

MB996036

Hexagon socket

Removal of injection pump sprocket screwed

 

 

 

sleeve/nut assembly

 

 

 

 

 

 

 

MB996037

Sprocket adapter

Adjustment of fuel injection pump

 

 

 

 

 

 

MB996038

Oil seal installer

Installation of crankshaft oil seal (flywheel end)

 

 

 

 

 

MB996039

Oil seal installer

Installation of intermediate shaft oil seal

 

 

 

 

 

MB996040

Oil seal installer

Installation of crankshaft oil seal (timing gear

 

 

 

end)

 

 

 

 

 

 

 

MB996041

Special socket

Removal of fuel injectors

 

 

 

 

 

 

E Mitsubishi Motors Corporation

July 1996

PWEE9602

11A-2-4

F8QT ENGINE - Special Tools

 

 

 

 

Tool

Number

Name

Use

 

 

 

 

 

MB996042

Oil seal installer

Installation of camshaft oil seal

 

 

 

 

 

MB996043

Sprocket stopper

Locking the injection pump sprocket

 

 

 

 

 

MD998715

Pulley holder pin

Retaining the camshaft sprocket (use together

 

 

 

with MB990767)

 

 

 

 

E Mitsubishi Motors Corporation

July 1996

PWEE9602

F8QT ENGINE - Crankshaft Pulley

11A-3-1

3. CRANKSHAFT PULLEY

2

120 Nm

1

REN0143

Removal steps

AA" "AA 1. Crankshaft pulley bolt 2. Crankshaft pulley

REMOVAL SERVICE POINT

AA"CRANKSHAFT PULLEY BOLT REMOVAL

Use special tool MB996015 to hold the flywheel during removal.

MB996015

REN0144

E Mitsubishi Motors Corporation

July 1996

PWEE9602

11A-3-2

F8QT ENGINE - Crankshaft Pulley

INSTALLATION SERVICE POINT

"AACRANKSHAFT PULLEY INSTALLATION

(1)Use special tool MB996015 to hold the flywheel during installation.

MB996015

REN0144

(2)Apply a locking agent to the screw thread of the bolt. Tighten the bolt to the specified torque.

REN0145

E Mitsubishi Motors Corporation

July 1996

PWEE9602

F8QT ENGINE - Timing Belt

11A-4-1

4. TIMING BELT

REMOVAL AND INSTALLATION

50 Nm 10

11

9

12

8

13

REN0001

Removal steps

 

 

1.

Bolt

AA" "BA 8.

Timing belt

2.

Bolt

AB" "AA 9.

Camshaft sprocket bolt

3.

Nut

10.

Camshaft sprocket

4.

Engine support bracket

11.

Camshaft sprocket key

5.

Timing gear case cover

12.

Timing belt tensioner

6.

Timing gear case cover

13.

Timing belt idler

7.

Timing gear case cover

 

 

E Mitsubishi Motors Corporation

July 1996

PWEE9602

11A-4-2

REN0002

F8QT ENGINE - Timing Belt

REMOVAL SERVICE POINTS

AA" TIMING BELT REMOVAL

(1)Turn the crankshaft clockwise so that the piston of No. 1 cylinder (flywheel end) is at TDC, with the following marks in line with each other:

D flywheel/clutch housing;

D rear guard plate/camshaft sprocket.

Scribe a mark on the injection pump mounting bracket.

(2)Insert an 8 mm diameter locking pin in the threaded hole of torx bolt 2 so that it engages the recess in the crankshaft web.

(3)Slacken the lock nut of the timing belt tensioner. Remove the timing belt.

AB" CAMSHAFT SPROCKET BOLT REMOVAL

(1)Use special tool MB990767, camshaft sprocket holder with pin MD998715 and remove the retaining bolt.

MB990767

REN0003

MB990767

50 Nm

REN0004

REN0005

E Mitsubishi Motors Corporation

July 1996

INSTALLATION SERVICE POINTS

"AA CAMSHAFT SPROCKET BOLT INSTALLATION

(1)Smear the retaining bolt with a locking agent.

Use special tool MB990767, camshaft sprocket holder with pin MD998715 to stop the sprocket turning and then tighten the camshaft sprocket retaining bolt to 50 Nm.

"BA TIMING BELT INSTALLATION

(1)Turn the camshaft clockwise with special tool MB990767 until the mark on the camshaft sprocket is opposite the mark on the guard plate.

(2)Turn the crankshaft 1/4 revolution counter-clockwise from the TDC position of No. 1 cylinder and insert the 8 mm diameter locking pin in the recess in the crankshaft web.

(3)Align the mark on the injection pump sprocket with the mark on the mounting bracket (turn clockwise).

PWEE9602

F8QT ENGINE - Timing Belt

11A-4-3

REN0006

MB996032

MB996033

REN0007

8EN0066

3

2

4

5

8EN0044

8EN0067

E Mitsubishi Motors Corporation

July 1996

(4)Fit the timing belt so that the lines on the belt are aligned with the marks on the crankshaft and camshaft sprockets and the injection pump sprocket.

NOTE

D the direction of rotation of the belt (see the arrows

on the belt);

Dthe sequence in which the belt is fitted around the sprockets.

(5)Fit the special tool on the timing belt and the timing belt tensioner.

(6)Tension the timing belt with the aid of an M6 bolt.

Standard value: 7.5 mm

(7)Tighten the lock nut to the specified torque.

INSPECTION

TIMING BELT

Should either of the following defects be evident, replace the belt with a new one:

(1)Hardened back surface rubber.

Glossy, non-elastic and so hard that no mark is produced when scratched with a fingernail.

(2)Cracked back surface rubber.

(3)Cracked or separated canvas.

(4)Cracked tooth bottom.

(5)Cracks in back surface of belt.

(6)Abnormal wear on the sides of the belt. A normal belt should have clear-cut sides as if cut by a sharp knife.

PWEE9602

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