Chapter V GW4D20 / GW4D20B Turbocharged Diesel Engine
Great Wall Baoding Internal Combustion Engine
Manufacturing Company Limited
259
Fig. 5-7-17 Installing the fuel inlet pipe and
return hose of fuel injector
M8×16
23N·
m±3N·
m
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) to the cylinder cover as per specified torque.
See Fig. 5-7-16.
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. 5-7-17.
Fig. 5-7-18 Installing the camshaft timing
pulley
Fig. 5-7-19 Installing the timing system
(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 installation, make sure the fuel return hose is
sealed so strictly that no fuel will leak from it.
Installing the fuel inlet pipe of fuel injector
③
(1) Remove the plug covers at both ends of the fuel
injector.
(2) Install the fuel inlet pipe of fuel injector; tighten
evenly the pipe connectors at both ends of the 4 fuel
injector fuel inlet pipes as shown in Fig. 5-7-17.
Tightening torque for fuel inlet pipe connector of
fuel injector
32N·
m±3N·
m
Make sure the fuel inlet pipe of fuel injector is
sealed properly without leakage after installation.
Attention:
When tightening the fuel inlet pipe of the
fuel injector, tighten the pipe connectors at both ends of
the fuel pipe simultaneously and evenly to prevent the
Fuel return hose
component
Fuel inlet pipe
of injector
Timing mark
Bone-line
Camshaft
timing pulley
Timing mark of damping pulley
Damping pulley
Timing mark of timing
hood component II
