Mitsubishi Eclipse. Manual — part 886

CRANKSHAFT AND CYLINDER BLOCK

TSB Revision

ENGINE OVERHAUL <3.0L>

11D-53

3. For example, if the crankshaft journal outside diameter

identification color is "Yellow " and the cylinder block bearing
bore identification mark is "III," select a bearing whose
identification color is "Green".
If there is no identification color paint on the crankshaft,
measure the journal outside diameter and select a bearing
appropriate for the measured value.

4. Install the bearings having a groove to the cylinder block.
5. Install the bearings having no groove to the bearing cap.

.

>>C<< CRANKSHAFT THRUST BEARING INSTALLATION
1. Install the thrust bearings in the number 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. The two thrust bearings are
different from each other. One has a tab while the other has
no tab. Be careful not to confuse them.

.

AKX00621

IDENTIFICATION COLOR

AB

AKX00623

GROOVE

FOR UPPER

FOR LOWER

AB

AKX00679

TAB

GROOVE

THRUST BEARING
"B"

GROOVE

THRUST BEARING "A"

AB

CRANKSHAFT AND CYLINDER BLOCK

TSB Revision

ENGINE OVERHAUL <3.0L>

11D-54

>>D<< BEARING CAP/BEARING CAP BOLT INSTALLATION

1. Install the bearing cap on the cylinder block, so that the

arrow points to the timing belt side.

2. Tighten the bearing cap bolts to 93

± 5 N⋅m (69 ± 4 ft-lb) in

the specified tightening sequence.

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)

.

>>E<< CRANKSHAFT REAR OIL SEAL INSTALLATION
Using special tool MD998718, press-fit a new crankshaft rear
oil seal into the oil seal case.

.

AKX00636

BEARING CAP

ARROW

BEARING CAP BOLT NO.
TIGHTENING SEQUENCE

CRANKSHAFT

CYLINDER BLOCK

AB

AKX00722

AKX00693

MD998718

OIL SEAL
CASE

AB

CRANKSHAFT AND CYLINDER BLOCK

TSB Revision

ENGINE OVERHAUL <3.0L>

11D-55

>>F<< OIL SEAL CASE ASSEMBLY INSTALLATION
1. Apply sealant Mitsubishi Genuine Part number MD970389

or equivalent to the gasket surface of oil seal case.
NOTE: Be sure to install the case quickly while the sealant is
wet (within 15 minutes).

2. Apply engine oil to the lip of the oil seal, and then install the

oil seal case onto the cylinder block.
NOTE: After installation, keep the sealed area away from
the oil for approximately one hour.

INSPECTION

M1113008800043

.

CRANKSHAFT JOURNAL OIL CLEARANCE
<PLASTIC GAUGING MATERIAL METHOD>
1. Remove oil from the crankshaft journal and crankshaft

bearing.

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.

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 plastic gauging material at its

widest part by using a scale printed on the plastic gauging
material package.

Standard value: 0.02

− 0.04 mm (0.0008 − 0.0015 inch)

Limit: 0.1 mm (0.003 inch)

.

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 (0.002 inch)
Limit: 0.1 mm (0.003 inch)

AKX00741

AKX00737AB

PLASTIC GAUGING
MATERIAL

AKX00724

AKX00738

CRANKSHAFT AND CYLINDER BLOCK

TSB Revision

ENGINE OVERHAUL <3.0L>

11D-56

3. If the distortion is excessive, correct within the allowable

limit or replace.

Grinding limit: 0.2 mm (0.008 inch)

*Includes/combined with cylinder head grinding.

Cylinder block height (when new):

210.5 mm (8.29 inches)

4. Check the cylinder walls for scratches and seizure. If defects

are evident, replace or bore to oversize and replace pistons
and piston rings.

5. Using a cylinder gauge, measure the cylinder bore and

cylindricity. If worn badly, correct by boring the cylinders to
an oversize and replace pistons and piston rings. Measure
at the points shown in the illustration.

Standard value:

Cylinder Inside Diameter: 91.1 mm (3.59 inches)
Cylindricity: 0.01 mm (0.0003 inch)

.

BORING CYLINDER
1. Oversize pistons to be used should be determined on the

basis of the largest bore cylinder.

Piston size identification

NOTE: Size mark is stamped on the piston top.

2. Measure the outside diameter of the piston to be used.

Measure it in the thrust direction as shown.

3. Based on the measured piston Outside Diameter (OD),

calculate the boring finish dimension.

Boring finish dimension = Piston OD +
(clearance between piston OD and cylinder)

−

0.02 mm (0.0008 inch) (honing margin)

CAUTION

To prevent distortion that may result from temperature rise
during honing, bore cylinders in the order of number 2,
number 4, number 6, number 1, number 3 and number 5.
4. Bore all cylinders to the calculated boring finish dimension.
5. Hone to the final finish dimension (piston OD + clearance

between piston OD and cylinder).

6. Check the clearance between the piston and cylinder.

Clearance between piston and cylinder:

0.02

− 0.04 mm (0.0008 − 0015 inch)

NOTE: When boring cylinders, finish all of six cylinders to
the same oversize. Do not bore only one cylinder to an over-
size.

AKX00739AB

12 mm (0.47 in)

BOTTOM

CENTER

SIZE

IDENTIFICATION
MARK

0.50 mm (0.020 in) Oversize diameter

0.50

1.00 mm (0.040 in) Oversize diameter

1.00

AKX00740

PISTON OUTSIDE
DIAMETER

THRUST
DIRECTION

AB