Chapter V GW4D20 / GW4D20B Turbocharged Diesel Engine
Great Wall Baoding Internal Combustion Engine
Manufacturing Company Limited
261
Fig. 5-7-22 Installing the timing tension pulley
Fig. 5-7-23 Installing the timing hood
component
Fig. 5-7-24 Installing the engine accessories
Attention:
If the pulley mark is not aligned, it is
required to turn the vehicle or not to turn the vehicle
anticlockwise when inspecting. See Fig. 5-7-21.
Tightening torque for timing tension pulley bolt
22N·
m~26N·
m
(7) Install the timing hood and timing hood component I,
screw down 10 hexagon flange face bolts (M6×16,
M10×35 and M10×50) to the front end of cylinder head
and cylinder body as per the specified torque. See Fig.
5-7-23.
Tightening torque for fastening bolt of timing hood
45N·
m±3N·
m
Tightening torque for fastening bolt of timing hood
component I
9N·
m±3N·
m
Reinstalling the engine accessories
①
(1) Reinstall the wedge idle wheel and tighten it
according to the required torque.
Visually checked, the pulleys should be on the
same plane.
Tightening torque for wedge idle wheel
22N·
m~26N·
m
(2) Reinstall the generator belt, use a tool to turn the
tension pulley, and install it after the belt is loose
enough. See Fig. 5-7-24.
After the installation, check the generator belt.
Make sure the belt wedge-shaped teeth perfectly
matches the pulley wedge slots.
Caution:
The excessive or insufficient tightening of
pulley is not allowed.
After the installation, please carry out the following
operations:
(1) Install the harness connector and make sure it is
installed firmly to the right position.
(2) Connect the earthing cable of storage battery. See
Use a hexagon
socket spanner to
adjust the
mounting hole.
Arm indicator
Notch
Rotary
installation
position of
tension pulley
Generator
belt
