Chpter IV Mechanical System
Great Wall Baoding Internal Combustion Engine
Manufacturing Company Limited
207
Fig. 4-7-17 Measurement for cylinder bore
(2) Clean the surface of cylinder body.
Measuring the cylinder bore
Use an inside dial indicator to measure the cylinder
bore at the measurement point
①
along the trust
direction
②
-
②
and the crankshaft axial direction
③
-
③
.
See Fig. 4-7-17.
Height of measurement
point
①
20mm
Attention:
If the measured value exceeds the
limitation, go to the Great Wall Authorized Service
Station for overhaul.
Cylinder bore
Standard
83.09~83.12mm
Fig. 4-7-18 Installing the cooling nozzle
assembly
Fig. 4-7-19 Installing the crankshaft position
sensor signal panel
Reassembly
Reinstalling the cooling nozzle assembly
○
16
Install the cooling nozzle and screw down the hexagon
socket head cap head screws (M6x12) fastening the
cooling nozzle onto the upper cylinder body as per the
specified torque. See Fig. 4-7-18.
Tightening torque for fastening bolt of cooling
nozzle
9 N·
m ± 3 N·
m
Reinstalling the crankshaft and crankshaft position
signal panel
○
15
(1) Install the upper bearing shell with oil groove and oil
hole on the upper cylinder body and the lower bearing
shell without oil groove and oil hole on the lower
cylinder body. Do not install them reversely. After the
installation, apply an appropriate amount of lubricating
oil.
(2) Install the crankshaft position sensor signal panel on
the 8
th
crank arm, and screw down the 3 hexagon
lobular socket countersunk head screws (M6x12) as per
the specified torque. After the installation, there should
be no deflection or misplacement. See Fig. 4-7-19.
Tightening torque for hexagon lobular socket
countersunk head screw
9 N·
m ± 3 N·
m
Cylinder body
Cooling nozzle
Crankshaft
position signal
panel
Crankshaft
Flywheel gear ring
assembly
