MAINTENANCE MANUAL OF GW4D20/GW4D20B TURBOCHARGED DIESEL ENGINES
302
Great Wall Baoding Internal Combustion Engine
Manufacturing Company Limited
Fig. 5-11-10 Installing the engine
accessories
Fig. 5-11-11 Installing the generator belt
Fig. 5-11-12 Installing the earthing cable of
storage battery
Installing the engine accessories
①
(1) Install the flat idle wheel and the wedge idle wheel on
the water pump and the timing hood respectively, and
fasten them with bolts. See Fig. 5-11-10.
After the installation, the belt pulleys must be in the
same plane by visual check.
Tightening torques for the flat idle wheel and wedge
idle wheel
22N·
m~26N·
m
(2) After aligning the bolt hole and the limit boss of the
tension pulley with the mounting hole of the engine
bracket, tighten the tension pulley with fastening bolts.
Tightening torque for fastening bolt of tension pulley
53N·
m~57N·
m
(3) Install the generator belt. During the installation, make
sure the pulleys, except the flat idle wheel, are exactly
installed. Make sure the belt wedge-shaped teeth
perfectly match the pulley wedge slot.
(4) Use a tool to turn the tension pulley until the generator
belt is loose enough, and insert the flat idle wheel into the
belt. See Fig. 5-11-11.
After the installation, check the generator belt for any
excessive tension or any insufficient tension.
After the installation, please carry out the following
operations.
(1) Connect the earthing cable of storage battery. See
Fig. 5-11-12.
(2) Start the engine, check its working condition and
make sure the timing system is in normal operation.
Rotary
installation
position of
tension pulley
Generator
belt
