MAINTENANCE MANUAL OF GW4D20/GW4D20B TURBOCHARGED DIESEL ENGINES
336
Great Wall Baoding Internal Combustion Engine
Manufacturing Company Limited
Fig. 5-16-35 Installing the timing tension
pulley
Fig. 5-16-36 Installing the timing hood
component
Fig. 5-16-37 Installing the engine accessories
45N·
m±3N·
m
Tightening torque for the fastening bolt of timing
hood component I
9N·
m±3N·
m
Installing the engine accessories
②
Install the wedge idle wheel assembly and tighten it as
per the specified torque.
Tightening torque for the wedge idle wheel
22N·
m~26N·
m
Installing the engine assembly
①
(1) Connect the hook to the crane to lift the engine
carefully, and then place the engine steadily at the
mounting position of the frame.
(2) Tighten the fastening nuts connecting the brackets
on both sides of the engine to the frame stud.
Tightening torque for the fastening nuts of engine
bracket
95N·
m±10N·
m
(3) Install the power steering pump, the refrigeration
compressor and the generator belt.
After the installation, check the generator belt.
Make sure the belt wedge-shaped teeth perfectly match
the pulley wedge slot.
Caution:
Excessive or insufficient tension of the
pulley is not allowed.
(4) Install the catalytic converter.
Attention:
During the installation of engine, do not
damage the oil pipe, electric elements and sensors.
After the installation, please carry out the following
operations.
(1) Install the harness connectors and make sure they
are installed firmly to the right positions.
(2) Connect the earthing cable of storage battery.
(3) Fill coolant into the cooling system
(4) Fill lubricating oil into the lubrication system.
(5) Start the engine and check it for normal working, and
check the cooling system and the lubrication system for
leakage.
Use a hexagon
socket spanner to
adjust the
mounting hole.
Arm indicator
Notch
Rotary
installation
position of
tension
pulley
Generator
belt
