b. Grade number of each crankshaft main journal is punched on
crankshaft. These numbers are punched in either Arabic or
Roman numerals.
c. Select main bearing with suitable thickness according to the
following example or table.
For example:
Main journal grade number: 1
Crankshaft journal grade number: 2
Main bearing grade number=1+2
= 3 (Yellow)
Main bearing grade number and identification color:
Main journal grade number
012
Crankshaft
journal grade
number0 0 (Black) 1 (Brown) 2 (Green)
1 or I 1 (Brown) 2 (Green) 3 (Yellow)
2 or II 2 (Green) 3 (Yellow) 4 (Blue)
Connecting rod bearing (Big end)
1. Install connecting rod bearing to connecting rod and cap.
2. Install connecting rod cap to connecting rod.
lTighten bolts to the specified torque.
3. Measure inner diameter ªCº of each bearing.
4. Measure outer diameter ªDpº of each crankshaft pin journal.
5. Calculate connecting rod bearing clearance.
Connecting rod bearing clearance=CþDp:
Standard
0.010 - 0.035 mm (0.0004 - 0.0014 in)
Limit
0.09 mm (0.0035 in)
6. If it exceeds the limit, replace bearing.
7. If clearance cannot be adjusted within the standard of any
bearing, grind crankshaft journal and use undersized bear-
ing. Refer to step 5 of ªBEARING CLEARANCEº, EM-2042.
8. If crankshaft is replaced, select connecting rod bearing
according to the following table.
Connecting rod bearing grade number:
These numbers are punched in either Arabic or Roman numer-
als.
Crank pin grade numberConnecting rod bearing
grade number
00
1orI 1
2orII 2
SEM272C
AEM027
AEM028
SEM567B
CYLINDER BLOCKKA24DE
Inspection (Cont'd)
EM-2044
AVAILABLE MAIN BEARING
Standard
Grade
numberThickness
mm (in)Identification
color
01.821 - 1.825
(0.0717 - 0.0719)Black
11.825 - 1.829
(0.0719 - 0.0720)Brown
21.829 - 1.833
(0.0720 - 0.0722)Green
31.833 - 1.837
(0.0722 - 0.0723)Yellow
41.837 - 1.841
(0.0723 - 0.0725)Blue
Undersize (service)Unit: mm (in)
ThicknessMain journal
diameter ªDmº
0.25
(0.0098)1.952 - 1.960
(0.0769 - 0.0772)Grind so that bearing
clearance is the
specified value.
AVAILABLE CONNECTING ROD BEARING
Standard
Grade
numberThickness
mm (in)Identification
color
01.505 - 1.508
(0.0593 - 0.0594)Ð
11.508 - 1.511
(0.0594 - 0.0595)Brown
21.511 - 1.514
(0.0595 - 0.0596)Green
Undersize (service)Unit: mm (in)
ThicknessCrank pin journal
diameter ªDpº
0.08 (0.0031)1.540 - 1.548
(0.0606 - 0.0609)
Grind so that bearing
clearance is the
specified value. 0.12 (0.0047)1.560 - 1.568
(0.0614 - 0.0617)
0.25 (0.0098)1.625 - 1.633
(0.0640 - 0.0643)
MISCELLANEOUS COMPONENTSUnit: mm (in)
Camshaft sprocket runout
[TIR]*Less than 0.15 (0.0059)
Flywheel runout [TIR]* Less than 0.15 (0.006)
Drive plate runout [TIR]* Less than 0.15 (0.006)
* Total indicator reading
SERVICE DATA AND SPECIFICATIONS (SDS)KA24DE
Inspection and Adjustment (Cont'd)
EM-2056
