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4D68 ENGINE (E- W) -
Crankshaft, Cylinder Block and Flywheel
11A-12-2
INSTALLATION SERVICE POINTS
"
A
A
CRANKSHAFT BEARING INSTALLATION
When the bearing needs replacing, select and install a proper
bearing by the following procedure.
(1) Measure the crankshaft journal diameter a nd confirm its
classification from the following table. In the case of a
crankshaft supplied as a service part, identification colors
of its journals are painted 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 front to rear beginning at No. 1.
Crankshaft journal
Cylinder
block
Bearing
identifica-
Classifi-
cation
Identification color O.D.
mm
block
bearing
bore
identifica-
tion mark
(for ser-
cation
Produc-
tion part
Service
part
mm
diameter
identifica-
tion mark
vice part)
1 None Yellow 56.994 - 0 1
57.000
1 2
2 3
2 None None 56.988 - 0 2
56.994
1 3
2 4
3 None White 56.982 - 0 3
56.988
1 4
2 5
(3) Select a proper bearing from the above table on the basis
of the identification data confirmed under items (1) and
(2).
[Example]
1. If themeasured valueof acrankshaft journalouter diameter
is 57.000 mm, the journal is classified as “1” in the table.
In case the crankshaft is also replaced by a spare part,
check the identification colors of the journals painted on
the new crankshaft. If the color is yellow, for example,
the journal is classified as “1”.
2. Next, check the cylinder block bearing hole identification
mark stamped on the cylinder block. If it is “0”, read the
“Bearing identification mark” column to find the
identification mark of the bearing to be used. In this case,
it is “1”.
(3) Install the bearings having an oil groove to the cylinder
block. Install the grooveless bearing with thrust flanges
in the center bearing bore in the cylinder block.
(4) Install the bearings having no oil groove to the bearing
caps.
PWEE9609
E
Dec. 1996Mitsubishi Motors Corporation
6EN0705
No.1
No.4
No.2
No.3
No.5
Location of
identification colors
6EN1184
Timing belt side
Cylinder bore size
mark (reference)
Cylinder block bearing
bore identification mark
No.1
No.2
No.3
No.4
No.5
1EN0272
Grooveless
Grooveless
Grooved
Lower bearing
(for No.1,2,4,5)
Upper bearing
(for No.1,2,4,5)
Upper a n d lower bearings
(for center)