Chapter V GW4D20 / GW4D20B Turbocharged Diesel Engine
Great Wall Baoding Internal Combustion Engine
Manufacturing Company Limited
269
Fig. 5-8-17 Installing the heater water return
pipe component
cover. See Fig. 5-8-17.
(2) Tighten a hexagon flange face bolt (M8×16)
connecting the heater water pipe as per the specified
torque to the cylinder head. See Fig. 5-8-17.
Tightening torque for fastening bolt of heater water
return pipe component
M6×16
9N·
m±3N·
m
M8×16
23N·
m±3N·
m
Fig. 5-8-18 Installing the water outlet pipe
connecting pipe component
Fig. 5-8-19 Installing the components of fuel
return hose
Installing the water outlet pipe connecting pipe
component
⑤
(1) Install the water outlet pipe connecting pipe
component; tighten the two hexagon flange face bolts
(M8×16) fastening two single ear clips to cylinder cover
as per specified torque. See Fig. 5-8-18.
Tightening torque for the fastening bolt of water
outlet pipe connecting pipe
23N·
m±3N·
m
(2) Connect the vacuum connecting pipe.
Installing the fuel return hose component
④
(1) Use the DELPHI fuel injector. Insert respectively the
fuel return rubber hoses into 4 injector heads and
position them in place. See Fig. 5-8-19.
(2) Use the BOSCH or XINFENG fuel injector. Remove
the dust cap from the upper end of the fuel injector.
Install 4 short connectors of the fuel return hose in 4
holes at the upper end of the fuel injector, and fix them
tight with the spring clips. Install the other long
connector to the fuel return tee on the high pressure
pump, and fix it tight with a single-ear stepless clip.
(3) Installing the fuel return hose support and clamps.
After the installation, make sure the components of
fuel return hose is sealed so strictly that no fuel will leak
from the fuel return hose.
Water outlet pipe
connecting
pipe
component
Cylinder cover
Fuel return hose
component
