Maintenance Manual for J2 Sedan
Mechanical Part of Engine
81
⑮
Flywheel
Check whether the flywheel and the signal disk are distorted or cracked.
Attention:
■
Do not disassemble the flywheel.
○
Crankshaft signal wheel
Check whether the crank signal wheel has
distortions, cracks and other anomalies.
Check whether the bolts are loose
3) Assembly
①
Blow away any oil and coolant from the cylinder body, the cylinder bore and the crankcase.
Remove any foreign bodies.
Attention:
■
Use goggles to protect your eyes.
②
Install the upper and lower main bearings shells.
Attention:
■
Select the bearing shells by using the identification marks of crankshaft (See the table below).
If the crankshaft can not be identified, measure the diameter of crankshaft, and then select
the corresponding bearing shell to match the crankshaft.
Crankshaft group marking
Main bearing
Hole group marking
1
2
3
4
5
0
(up / down)
Black
／
Black Black
／
Yellow Black
／
Red
Black
／
White
Black
／
Purple
1
(up / down)
Yellow
／
Black
Yellow
／
Yellow
Yellow
／
Red
Yellow
／
White
Yellow
／
Purple
2
(up / down)
Red
／
Black
Red
／
Yellow
Red
／
Red
Red
／
White
Red
／
Purple
a.
Remove any dust, dirt and oil from the matching surfaces of cylinder body and main bearing cap.
b. Install intermediate and upper bearing shells on the cylinder body
c. Be aware of direction of bearing shell during the installation.
■
Bearings shells with oil holes and slots should be installed at block side; other shells should be
installed at the main bearing cap side.
■
For installation of bearings, clean before installation. Please apply engine oil to the bearing surface.
Do not use oil on the back, but to thoroughly clean it.
■
During installation, align the extrusion on bearing shell with the cut of cylinder body and main
bearing cap.
Fig.1.1.070
