Mitsubishi Lancer Evolution VI. Manual — part 23
ENGINE –
Crankshaft and Flywheel
11-67
CRANKSHAFT AND FLYWHEEL
REMOVAL AND INSTALLATION
Apply engine oil to all
moving parts before
installation.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
25 Nm + 90
_
11 Nm
132 Nm
9 Nm
11 Nm
32 Nm
11 Nm
Removal steps
1. Flywheel bolt
2. Flywheel
3. Rear plate
4. Bell housing cover
"
E
A
5. Oil seal case
"
D
A
6. Oil seal
"
C
A
7. Beam bearing cap bolt
"
C
A
8. Beam bearing cap
"
B
A
9. Crankshaft bearing lower
10. Crankshaft
"
B
A
11. Crankshaft bearing upper
"
A
A
12. Crankshaft thrust bearing
13. Check valve
14. Oil jet
15. Cylinder block
ENGINE –
Crankshaft and Flywheel
11-68
INSTALLATION SERVICE POINTS
"
A
A
CRANKSHAFT THRUST BEARING INSTALLATION
(1) Install the two thrust bearing in the number 3 bearing
bore in the cylinder block. 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
side toward the crankshaft web.
"
B
A
CRANKSHAFT BEARING INSTALLATION
(1) From the following table, select a bearing whose size
is appropriate for the crankshaft journal outside diameter.
Groove
Identification color of crankshaft journal
Bearing bore size
identification mark
Bearing bore
identification
mark
Cylinder inner
diameter size
mark
Rear face of
cylinder block
Bottom of
cylinder block
No. 1
No. 2
No. 3
No. 4
No. 5
ENGINE –
Crankshaft and Flywheel
11-69
Crankshaft journal outside diameter
Cylinder block bearing bore
Crankshaft bearing
Identification color
Size mm
Identification mark
Identification mark or color
Yellow
56.994 – 57.000
0
0 or Black
1
1 or Green
2
2 or Yellow
None
56.988 – 56.994
0
1 or Green
1
2 or Yellow
2
3 or None
White
56.982 – 56.988
0
2 or Yellow
1
3 or None
2
4 or Blue
For example, if the crankshaft journal outside diameter
ID color is “yellow” and cylinder block bearing bore ID
mark is “1”, select a bearing whose ID mark is “1”.
If there is no ID color paint on the crankshaft, measure
the journal outside diameter and select a bearing
appropriate for the measured value.
(2) Install the bearings having an oil groove to the cylinder
block.
(3) Install the bearings having no oil groove to the bearing
cap.
"
C
A
BEARING CAP / BEARING CAP BOLT
INSTALLATION
(1) Install the bearing caps so the arrow points to the timing
belt side.
(2) Before installing the bearing cap bolts, check that the
shank length of each bolt meets the limit. If the limit is
exceeded, replace the bolt.
Limit: Max. 71.1 mm
(3) Apply engine oil to the threaded portion and bearing
surface of the bolt.
Crankshaft bearing size
identification mark or color
Identification
mark or color
Upper
Groove
Lower
9EN0477
Shank length
ENGINE –
Crankshaft and Flywheel
11-70
(4) Tighten the bolts to 25 Nm in the specified tightening
sequence.
(5) Make a paint mark on the head of each bolt.
(6) Make a paint mark on the bearing cap at the position
90
°
from the paint mark made on the bolt in the direction
of tightening the bolt.
(7) According to the specified tightening sequence, give a
90
°
turn to each bolt and make sure that the paint mark
on the bolt and that on the cap are in alignment.
Caution
If the bolt is turned less than 90
°
, proper fastening
performance may not be expected. When tightening
the bolt, therefore, be careful to give a sufficient turn
to it.
(8) After installing the bearing caps, make sure that the
crankshaft turns smoothly and the end play is correct.
If the end play exceeds the limit, replace No. 3 crankshaft
bearings.
Standard value: 0.05 – 0.25 mm
Limit: 0.4 mm
"
D
A
OIL SEAL INSTALLATION
Using the special tool, knock the oil seal into the oil seal
case.
Arrow mark
6AE0299
Paint mark
Paint mark
90
°
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