Mitsubishi 380. Manual — part 457

CRANKSHAFT AND CYLINDER BLOCK

ENGINE OVERHAUL <3.8L ENGINE>

11B-54

INSTALLATION SERVICE POINTS

.

>>B<< KNOCK SENSOR BRACKET
INSTALLATION

Check that the bracket is in proper contact with the cylinder
block boss and tighten to the specified torque in the order
shown.

Tightening torque: 28

± 2 N⋅m (21 ± 1 ft-lb)

.

>>C<< CRANKSHAFT BEARING INSTALLATION

1. Measure the crankshaft journal diameter and confirm its

classification from the following table. In the case of a
crankshaft supplied as a service part, identification
colors/marks of its journals are painted/stamped at the
positions shown in the illustration.

2. The cylinder block bearing bore diameter identification

marks are stamped at the position shown in the illustration
from left to right, beginning at No.1.

AKX00649

TIMING BELT SIDE

AB

1

2

3

4

AKX01391

No.4 JOURNAL

No.1 JOURNAL

No.2 JOURNAL No.3 JOURNAL

LOCATION OF IDENTIFCATION COLOR

AB

AKX00648

BEARING BORE

DIAMETER

IDENTIFICATION

MARK

CYLINDER INSIDE

DIAMETER SIZE MARK

TIMING BELT SIDE

AB

No.4

No.2

No.3

No.1

CRANKSHAFT JOURNAL OUTSIDE
DIAMETER

CYLINDER BLOCK
BEARING BORE

CRANKSHAFT
BEARING No.1, 4

CRANKSHAFT
BEARING No.2, 3

IDENTIFICATION
COLOR

SIZE mm (in)

IDENTIFICATION
MARK

IDENTIFICATION
COLOR

IDENTIFICATION
COLOR

Yellow

63.994

− 64.000

(2.5194

− 2.5197)

I

Pink

Blue

II

Red

Pink

III

Green

Red

None

63.988

− 63.994

(2.5192

− 2.5194)

I

Red

Pink

II

Green

Red

III

Black

Green

CRANKSHAFT AND CYLINDER BLOCK

ENGINE OVERHAUL <3.8L ENGINE>

11B-55

3. From the above table, select a bearing whose size is

appropriate for the crankshaft journal outside diameter. If the
crankshaft journal outside diameter ID color is "yellow" and
the cylinder block bearing bore ID mark is "III," for example,
select a bearing whose ID color is "green" <No.1, 4> or "red"
<No.2, 3>.
If there is no ID color paint on the crankshaft, measure the
journal outside diameter and select a bearing appropriate for
the measured valve.

4. Install bearings with the groove toward the cylinder block.

5. Install the bearings having no groove to the bearing cap.

.

>>D<< CRANKSHAFT THRUST BEARING
INSTALLATION

1. Install the thrust bearing in the No.3 bearing bore in the

cylinder block and in the bearing cap. 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

toward the crankshaft web.

.

White

63.982

− 63.988

(2.5190

− 2.5192)

I

Green

Red

II

Black

Green

III

Brown

Black

CRANKSHAFT JOURNAL OUTSIDE
DIAMETER

CYLINDER BLOCK
BEARING BORE

CRANKSHAFT
BEARING No.1, 4

CRANKSHAFT
BEARING No.2, 3

IDENTIFICATION
COLOR

SIZE mm (in)

IDENTIFICATION
MARK

IDENTIFICATION
COLOR

IDENTIFICATION
COLOR

AK203987

IDENTIFICATION COLOR

AB

AKX00623

GROOVE

FOR UPPER

FOR LOWER

AB

AKX01393AB

GROOVE

THRUST

BEARING

CRANKSHAFT AND CYLINDER BLOCK

ENGINE OVERHAUL <3.8L ENGINE>

11B-56

>>E<< BEARING CAP/BEARING BOLT
INSTALLATION

1. Attach the bearing cap on the cylinder block as shown in the

illustration.

2. Tighten the bearing cap bolts to specified torque in the

sequence shown in the illustration.

Tightening torque: 74

± 4 N⋅m (54 ± 3 ft-lb)

3. Check that the crankshaft rotates smoothly.
4. Check the end play. If it exceeds the limit value, replace the

thrust bearing.

Standard value: 0.05

− 0.25 mm (0.002 − 0.009 inch)

Limit: 0.3 mm (0.01 inch)

.

AKX01395AB

FRONT MARK

BEARING CAP BOLT

NUMBERS ARE

TIGHTENING SEQUENCE

BEARING CAP

CRANKSHAFT

CYLINDER BLOCK

AK201528

CRANKSHAFT AND CYLINDER BLOCK

ENGINE OVERHAUL <3.8L ENGINE>

11B-57

>>F<< CRANKSHAFT REAR OIL SEAL
INSTALLATION

Using special tool MD998718, press-fit a new crankshaft rear
oil seal into the oil seal case.

.

>>G<< OIL SEAL CASE INSTALLATION

1. Apply the sealant Mitsubishi Genuine Part number

MD970389 or equivalent to the oil seal case.

2. Apply a small amount of engine oil to the entire

circumference of the oil seal lip section, and place the oil
seal case on the cylinder block.

NOTE: Install the oil seal case within 15 minutes after apply-
ing liquid gasket.Then wait at least one hour. Do not start the
engine or let engine oil or coolant touch the sealant during
that time.

INSPECTION

M1113008800322

.

CRANKSHAFT JOURNAL OIL CLEARANCE
<PLASTIC GAUGING MATERIAL METHOD>

1. Remove oil from the crankshaft journal and crankshaft

bearing inner surface.

2. Install the crankshaft.
3. Cut plastic gauging material to the same length as the width

of the bearing and place it on the journal in parallel with its
axis.

AKX00693

MD998718

OIL SEAL

CASE

AB

AK201083

AK101043AB

PLASTIC
GAUGING
MATERIAL