Mitsubishi Outlander GS45X. Manual - part 491

 

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Mitsubishi Outlander GS45X. Manual - part 491

 

 

11C-1

GROUP 11C

ENGINE 

MECHANICAL 

<3.0L ENGINE>

CONTENTS

GENERAL INFORMATION . . . . . . . .

11C-2

ENGINE DIAGNOSIS. . . . . . . . . . . . .

11C-3

SERVICE SPECIFICATIONS. . . . . . .

11C-4

SEALANTS AND ADHESIVE  . . . . . .

11C-4

SPECIAL TOOLS. . . . . . . . . . . . . . . .

11C-5

ON-VEHICLE SERVICE. . . . . . . . . . .

11C-8

GENERATOR DRIVE BELT TENSION 

 

CHECK . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

11C-8

AUTO-TENSIONER CHECK  . . . . . . . . . . . 

11C-9

POWER STEERING OIL PUMP 

 

DRIVE BELT TENSION CHECK. . . . . . . . . 

11C-9

POWER STEERING OIL PUMP 

 

DRIVE BELT INSPECTION  . . . . . . . . . . . . 

11C-11

VALVE CLEARANCE CHECK AND 

 

ADJUSTMENT  . . . . . . . . . . . . . . . . . . . . . . 

11C-11

ROCKER ARM PISTON OPERATION 

 

CHECK . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

11C-12

IGNITION TIMING CHECK . . . . . . . . . . . . . 

11C-13

CURB IDLE SPEED CHECK  . . . . . . . . . . . 

11C-15

IDLE MIXTURE CHECK . . . . . . . . . . . . . . . 

11C-16

COMPRESSION PRESSURE CHECK. . . . 

11C-18

MANIFOLD VACUUM CHECK . . . . . . . . . . 

11C-19

LASH ADJUSTER CHECK . . . . . . . . . . . . . 

11C-20

CRANKSHAFT PULLEY  . . . . . . . . . .

11C-23

REMOVAL AND INSTALLATION  . . . . . . . . 

11C-23

CAMSHAFT OIL SEAL. . . . . . . . . . . .

11C-29

REMOVAL AND INSTALLATION  . . . . . . . . 

11C-29

CAMSHAFT AND VALVE 

 

STEM SEAL  . . . . . . . . . . . . . . . . . . . .

11C-32

REMOVAL AND INSTALLATION  . . . . . . . . 

11C-32

OIL PAN AND OIL STRAINER. . . . . .

11C-43

REMOVAL AND INSTALLATION  . . . . . . . . 

11C-43

INSPECTION. . . . . . . . . . . . . . . . . . . . . . . . 

11C-47

CRANKSHAFT FRONT OIL SEAL. . .

11C-47

REMOVAL AND INSTALLATION  . . . . . . . . 

11C-47

CRANKSHAFT REAR OIL SEAL. . . .

11C-49

REMOVAL AND INSTALLATION  . . . . . . . . 

11C-49

CYLINDER HEAD GASKET . . . . . . . .

11C-51

REMOVAL AND INSTALLATION  . . . . . . . . 

11C-51

TIMING BELT . . . . . . . . . . . . . . . . . . .

11C-55

REMOVAL AND INSTALLATION  . . . . . . . . 

11C-55

INSPECTION. . . . . . . . . . . . . . . . . . . . . . . . 

11C-59

ENGINE ASSEMBLY . . . . . . . . . . . . .

11C-61

REMOVAL AND INSTALLATION  . . . . . . . . 

11C-61

GENERAL INFORMATION

TSB Revision

ENGINE MECHANICAL <3.0L ENGINE>

11C-2

GENERAL INFORMATION

M1111000101746

The 6B31 (3.0 L) engine is a six-cylinder engine. The 
cylinder numbers are assigned as 1-3-5 for the right 
bank and 2-4-6 for the left bank from the front of the 
engine (timing belt side). This engine is fired in the 
order of 1-2-3-4-5-6 cylinders.

ITEMS

SPECIFICATIONS

Type

V type, overhead camshaft

Number of cylinders

6

Bore mm (in)

87.6 (3.45)

Stroke mm (in)

82.9 (3.26)

Total displacement cm

3

 (cu. in)

2,998 (182.9)

Compression ratio

10.5

Firing order

1-2-3-4-5-6

Valve timing

Intake valve

Opens (BTDC)

-1

° <Low speed cam>

18

° <High speed cam>

Closes (ABDC)

37

° <Low speed cam>

86

° <High speed cam>

Exhaust valve

Opens (BBDC)

55

°

Closes (ATDC)

20

°

Lubrication system

Pressure feed, full-flow filtration

Oil pump type

Trochoid type

ENGINE DIAGNOSIS

TSB Revision

ENGINE MECHANICAL <3.0L ENGINE>

11C-3

ENGINE DIAGNOSIS

M1111000700381

SYMPTOMS

PROBABLE CAUSE

REMEDY

Compression is too 
low

Blown cylinder head gasket

Replace the gasket.

Worn or damaged piston rings

Replace the rings.

Worn piston or cylinder

Repair or replace the piston and/or the 
cylinder block.

Worn or damaged valve seat

Repair or replace the valve and/or the 
seat ring

Drop in engine oil 
pressure

Engine oil level is too low

Check the engine oil level.

Malfunction of engine oil pressure switch

Replace the engine oil pressure switch.

Clogged oil filter

Install a new filter.

Worn oil pump gears or cover

Replace the gears and/or the cover.

Thin or diluted engine oil

Change the engine oil to the correct 
viscosity.

Stuck (opened) oil relief valve

Repair the relief valve.

Excessive bearing clearance

Replace the bearings.

Engine oil pressure 
too high

Stuck (closed) oil relief valve

Repair the relief valve.

Noisy valves

Incorrect valve clearance <Intake side>

Adjust valve clearance

Malfunction of lash adjuster (including 
entry of air into high pressure chamber) 
<Exhaust side>

Check the lash adjuster.

Thin or diluted engine oil (low engine oil 
pressure)

Change the engine oil.

Worn or damaged valve stem or valve 
guide

Replace the valve and/or the guide.

Connecting rod 
noise/main bearing 
noise

Insufficient oil supply

Check the engine oil level.

Thin or diluted engine oil

Change the engine oil.

Excessive bearing clearance

Replace the bearings.

SERVICE SPECIFICATIONS

TSB Revision

ENGINE MECHANICAL <3.0L ENGINE>

11C-4

SERVICE SPECIFICATIONS

M1112000302100

SEALANTS AND ADHESIVE

M1111000500923

Item

Standard value

Limit

Power steering oil pump drive belt tension Vibration frequency Hz

119 

− 225

Deflection (Reference) mm 
(in)

8.5 

− 18.3 (0.33 − 

0.72)

Basic ignition timing at idle

5

°BTDC ± 3°

Actual ignition timing at curb idle

Approximately 10

° 

BTDC

CO contents %

0.5 or less

HC contents   ppm

100 or less

Curb idle speed   r/min

600 

± 100

Compression pressure (200 r/min)   kPa (psi)

1,650 (239)

Minimum 
1,150 (167)

Compression pressure difference of all cylinder   kPa (psi)

98 (14)

Intake manifold vacuum at curb idle   kPa (in Hg)

Minimum 60 
(18)

Cylinder head bolt outside diameter mm (in)

0.1 (0.0039)

Auto-tensioner rod protrusion amount mm (in)

9.1 

− 13.4 (0.36 − 

0.52)

Item

Specified sealant and adhesive

Remark

Engine oil pressure switch

ThreeBond 1141J, ThreeBond 1215, 
ThreeBond 1212D or equivalent

Semi-drying 
sealant

Engine upper oil pan

ThreeBond 1227D, ThreeBond 1217G 
(Mitsubishi Genuine Part No.1000A923), 
LOCTITE 5970, LOCTITE 5900 or equivalent

Semi-drying 
sealant

Engine lower oil pan

ThreeBond 1227D, ThreeBond 1217G 
(Mitsubishi Genuine Part No.1000A923), 
ThreeBond 1207F (Mitsubishi Genuine Part 
No.1000A992), LOCTITE 5970, LOCTITE 
5900 or equivalent

Semi-drying 
sealant

Drive plate bolt

ThreeBond 1324 or equivalent

Anaerobic 
adhesive

 

 

 

 

 

 

 

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