MAINTENANCE MANUAL OF GW4D20/GW4D20B TURBOCHARGED DIESEL ENGINES
272
Great Wall Baoding Internal Combustion Engine
Manufacturing Company Limited
Fig. 5-8-26 Installing the timing hood
component
Fig. 5-8-27 Installing the engine accessories
Fig. 5-8-28 Installing the earthing cable of
storage battery
(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 upon the required torque. See Fig.
5-8-26.
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.
After the installation, check the generator belt.
Make sure the belt wedge-shaped teeth perfectly match
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
Fig. 5-8-28.
(3) Fill the engine cooling system with coolant.
(4) Start the engine and check the working condition of
the engine. The valve timing mechanism should be in
perfect operation.
Generator
belt
Rotary
installation
position of
tension pulley
