Mitsubishi Eclipse. Manual — part 869

PISTON AND CONNECTING ROD

TSB Revision

ENGINE OVERHAUL <2.4L>

11B-53

4. Use suitable thread protectors on the connecting rod bolts

before inserting the piston and connecting rod assembly into
the cylinder block.
Care must be taken not to nick the crank pin.

5. Insert the piston and connecting rod assembly into the

cylinder with front mark on the piston crown pointing to the
timing belt side.

6. Using a suitable piston ring compressor tool, install the

piston and connecting rod assembly into the cylinder block.

.

>>F<< CONNECTING ROD CAP INSTALLATION
1. Verifying the mark made during disassembly, install the

bearing cap to the connecting rod. If the connecting rod is
new with no index mark, make sure that the bearing locking
notches are on the same side as shown.

2. Make sure that the connecting rod big end side clearance

meets the specification.

Standard value: 0.10

− 0.25 mm (0.004 − 0.009 inch)

Limit: 0.4 mm (0.015 inch)

.

>>G<< CONNECTING ROD CAP NUT TIGHTENING
1. The connecting rod bolts should be examined before reuse.

If the bolt threads are damaged, the bolt should be replaced.
Hand-thread the nut to the full length of the bolt threads. If
the nut does not run down smoothly, the bolt should be
replaced.

2. Before installation of each nut, apply engine oil to the

threaded portion and bearing surface of the nut.

3. Loosely tighten each nut to the bolt.
4. Then tighten the nuts alternately to a torque of 20

± 2 N⋅m

(14

± 1 ft-lb) to install the cap properly.

AK102993

TIMING BELT SIDE

AB

FRONT MARK

AKX00535

CYLINDER NO.

NOTCHES

AB

AKX00578

PISTON AND CONNECTING ROD

TSB Revision

ENGINE OVERHAUL <2.4L>

11B-54

5. Make a paint mark on the head of each nut.
6. Make a paint mark on the bolt end at the position 90 degree

angle to 94 degree angle from the paint mark made on the
nut in the direction of tightening the nut.

CAUTION

• If the nut is turned less than 90 degree angle, proper

fastening performance may not be achieved. Be careful
to tighten the nut exactly 90 degree angle.

• If the nut is overtightened (exceeding 94 degree angle),

loosen the nut completely and then retighten it by
repeating the tightening procedure from step 3.

7. Turn the nut further 90 degree angle to 94 degree angle and

make sure that the paint marks on the nut and bolt are
aligned.

INSPECTION

M1113008500138

.

PISTON
Replace the piston if scratches or seizure is evident on its sur-
faces (especially the thrust surface). Replace the piston if it is
cracked.

.

PISTON PIN
1. Insert the piston pin into the piston pin hole with your thumb.

You should feel a slight resistance. Replace the piston pin if
it can be easily inserted or there is an excessive play.

2. The piston and piston pin must be replaced as an assembly.

.

PISTON RING
1. Check the piston ring for damage, excessive wear, and

breakage. Replace if defects are evident. If the piston has
been replaced, the piston rings must also be replaced.

2. Check for clearance between the piston ring and ring

groove. If it exceeds the limit, replace the ring or piston, or
both.

Standard value: 0.02

− 0.06 mm (0.0008 − 0.0023 inch

Limit: 0.1 mm (0.003 inch)

AKX00450

PAINT MARK

PAINT
MARK

90˚ to 94˚

NUT

BOLT

AB

AKX00612

PISTON AND CONNECTING ROD

TSB Revision

ENGINE OVERHAUL <2.4L>

11B-55

3. Insert the piston ring into the cylinder bore. Force the ring

down with a piston, the piston crown being in contact with
the ring, to correctly position it at right angles to the cylinder
wall. Then, measure the end gap with a feeler gauge.
If the ring gap is excessive, replace the piston ring.

Standard value:

Number 1: 0.30

− 0.45 mm (0.012 − 0.017 inch)

Number 2: 0.45

− 0.60 mm (0.018 − 0.023 inch)

Oil: 0.20

− 0.60 mm (0.008 − 0.023 inch)

Limit:

Number 1, Number 2: 0.8 mm (0.03 inch)
Oil: 1.0 mm (0.03 inch)

.

CRANKSHAFT PIN OIL CLEARANCE
<PLASTIC GAUGING MATERIAL METHOD>
1. Remove oil from the crankshaft pin and the connecting rod

bearing.

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

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

3. Install the connecting rod cap carefully and tighten the nuts

to the specified torque.

4. Carefully remove the connecting rod cap.
5. 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

− 0.05 mm (0.0008 − 0.0019 inch)

Limit: 0.1 mm (0.003 inch)

AKX00719

PUSH IN BY
PISTON

PISTON
RING GAP

PISTON RING

AB

AK100208AB

PLASTIC GAUGING
MATERIAL

AKX00609

CRANKSHAFT AND CYLINDER BLOCK

TSB Revision

ENGINE OVERHAUL <2.4L>

11B-56

CRANKSHAFT AND CYLINDER BLOCK

REMOVAL AND INSTALLATION

M1113008700284

CAUTION

On the flexible flywheel equipped engines, do not remove any of the bolts "A" of the flywheel shown
in the illustration. The balance of the flexible flywheel is adjusted in an assembled condition. Remov-
ing the bolt, therefore, can cause the flexible flywheel to be out of balance giving and resulting in
damage.

AKX00512

APPLY ENGINE OIL
TO ALL MOVING
PARTS BEFORE
INSTALLATION.

11 ± 1 N·m
95 ± 9 in-lb

132 ± 5 N·m
98 ± 4 ft-lb

23 ± 2 N·m
17 ± 1 ft-lb

8.8 ± 1 N·m
78 ± 9 in-lb

11 ± 1 N·m
95 ± 9 in-lb

132 ± 5 N·m
98 ± 4 ft-lb

25 ± 2 N·m
18 ± 1 ft-lb

+ 90˚

10

1

12

2

13

5

A

14

21

4

3

22

11

7

8

6

9

20

19

18

17

16

15

N

AB

REMOVAL STEPS

1. FLYWHEEL BOLT <M/T>
2. ADAPTER PLATE <M/T>
3. FLYWHEEL <M/T>
4. ADAPTER PLATE <M/T>
5. CRANKSHAFT BUSHING <M/T>
6. DRIVE PLATE BOLT <A/T>
7. ADAPTER PLATE <A/T>
8. DRIVE PLATE <A/T>
9. CRANKSHAFT BUSHING <A/T>
10.REAR PLATE
11.BELL HOUSING COVER

>>E<<

12.OIL SEAL CASE ASSEMBLY

>>D<<

13.OIL SEAL
14.OIL SEAL CASE

>>C<<

15.BEARING CAP BOLT

>>C<<

16.BEARING CAP

>>B<<

17.CRANKSHAFT BEARING (LOWER)
18.CRANKSHAFT

>>B<<

19.CRANKSHAFT BEARING (UPPER)

>>A<<

20.CRANKSHAFT THRUST BEARING
21.KNOCK SENSOR
22.CYLINDER BLOCK

REMOVAL STEPS (Continued)