Chpter IV Mechanical System
Great Wall Baoding Internal Combustion Engine
Manufacturing Company Limited
167
Fig. 4-4-25 Installing the thrust plate
Fig. 4-4-26 Orderly screwing down the main
bearing cap bolts of the crankshaft in
separated times
Fig. 4-4-27 Installing the rear oil seal
assembly of crankshaft
torque. See the Fig. 4-4-26.
LOCTITE510 anaerobic plane sealant.
Attention:
Before applying the sealant to the top
surface of lower cylinder body, make sure the joint
surface between the upper and lower cylinder bodies are
clean.
Tightening torque for the fastening bolt of the main
bearing cap
Main bearing cap bolt
(screw it down tightly by
three steps)
40 N·
m±3 N·
m
；
Turn for 90°: then turn for
another 90°
Hexagon flange face bolt
23 N·
m±3 N·
m
Prompt:
Apply a small amount of lubricating oil to the
thread while installing the main bearing cap bolts.
Mobil API CI-4 lubricating oil
After installation, rotate the crankshaft manually, and
the crankshaft should be able to rotate freely without any
seizure.
Reinstalling the rear oil seal assembly of the
crankshaft
⑨
The rear oil seal of the crankshaft ready for
installation should be clean and without any foreign
matters.
(1) Apply an appropriate amount lubricating oil to the lip
oil groove and excircle position of the oil seal assembly.
Mobil API CI-4 lubricating oil
(2) Install the rear oil seal of the crankshaft to the cylinder
body with special tools. See Fig. 4-4-27.
Rear oil seal installer: 5-8840-2539-0.
Caution:
Make sure the oil seal end face does not tilt
and it is properly installed.
Reinstalling the connecting rod assembly and piston
Lubricate it with oil.
Front end
Cylinder body
Rear oil seal
